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clang-p2996/llvm/test/Transforms/LoopVectorize/X86/float-induction-x86.ll
Florian Hahn 23c2f2e6b2 [LV] Mark increment of main vector loop induction variable as NUW. 
This patch marks the induction increment of the main induction variable
of the vector loop as NUW when not folding the tail.

If the tail is not folded, we know that End - Start >= Step (either
statically or through the minimum iteration checks). We also know that both
Start % Step == 0 and End % Step == 0. We exit the vector loop if %IV +
%Step == %End. Hence we must exit the loop before %IV + %Step unsigned
overflows and we can mark the induction increment as NUW.

This should make SCEV return more precise bounds for the created vector
loops, used by later optimizations, like late unrolling.

At the moment quite a few tests still need to be updated, but before
doing so I'd like to get initial feedback to make sure I am not missing
anything.

Note that this could probably be further improved by using information
from the original IV.

Attempt of modeling of the assumption in Alive2:
https://alive2.llvm.org/ce/z/H_DL_g

Part of a set of fixes required for PR50412.

Reviewed By: mkazantsev

Differential Revision: https://reviews.llvm.org/D103255
2021-06-07 10:47:52 +01:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -O3 -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -keep-loops=false -mcpu=core-avx2 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefix AUTO_VEC %s
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
; This test checks auto-vectorization with FP induction variable.
; FMF is required on the IR instructions.
;void fp_iv_loop1(float * __restrict__ A, int N) {
; float x = 1.0;
; for (int i=0; i < N; ++i) {
; A[i] = x;
; x += 0.5;
; }
;}
define void @fp_iv_loop1(float* noalias nocapture %A, i32 %N) #0 {
; AUTO_VEC-LABEL: @fp_iv_loop1(
; AUTO_VEC-NEXT: entry:
; AUTO_VEC-NEXT: [[CMP4:%.*]] = icmp sgt i32 [[N:%.*]], 0
; AUTO_VEC-NEXT: br i1 [[CMP4]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
; AUTO_VEC: for.body.preheader:
; AUTO_VEC-NEXT: [[ZEXT:%.*]] = zext i32 [[N]] to i64
; AUTO_VEC-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N]], 32
; AUTO_VEC-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[FOR_BODY:%.*]], label [[VECTOR_PH:%.*]]
; AUTO_VEC: vector.ph:
; AUTO_VEC-NEXT: [[N_VEC:%.*]] = and i64 [[ZEXT]], 4294967264
; AUTO_VEC-NEXT: [[CAST_CRD:%.*]] = sitofp i64 [[N_VEC]] to float
; AUTO_VEC-NEXT: [[TMP0:%.*]] = fmul fast float [[CAST_CRD]], 5.000000e-01
; AUTO_VEC-NEXT: [[IND_END:%.*]] = fadd fast float [[TMP0]], 1.000000e+00
; AUTO_VEC-NEXT: [[TMP1:%.*]] = add nsw i64 [[N_VEC]], -32
; AUTO_VEC-NEXT: [[TMP2:%.*]] = lshr exact i64 [[TMP1]], 5
; AUTO_VEC-NEXT: [[TMP3:%.*]] = add nuw nsw i64 [[TMP2]], 1
; AUTO_VEC-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP3]], 3
; AUTO_VEC-NEXT: [[TMP4:%.*]] = icmp ult i64 [[TMP1]], 96
; AUTO_VEC-NEXT: br i1 [[TMP4]], label [[MIDDLE_BLOCK_UNR_LCSSA:%.*]], label [[VECTOR_PH_NEW:%.*]]
; AUTO_VEC: vector.ph.new:
; AUTO_VEC-NEXT: [[UNROLL_ITER:%.*]] = and i64 [[TMP3]], 1152921504606846972
; AUTO_VEC-NEXT: br label [[VECTOR_BODY:%.*]]
; AUTO_VEC: vector.body:
; AUTO_VEC-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH_NEW]] ], [ [[INDEX_NEXT_3:%.*]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[VEC_IND:%.*]] = phi <8 x float> [ <float 1.000000e+00, float 1.500000e+00, float 2.000000e+00, float 2.500000e+00, float 3.000000e+00, float 3.500000e+00, float 4.000000e+00, float 4.500000e+00>, [[VECTOR_PH_NEW]] ], [ [[VEC_IND_NEXT_3:%.*]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[NITER:%.*]] = phi i64 [ [[UNROLL_ITER]], [[VECTOR_PH_NEW]] ], [ [[NITER_NSUB_3:%.*]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[STEP_ADD:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00>
; AUTO_VEC-NEXT: [[STEP_ADD2:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00>
; AUTO_VEC-NEXT: [[STEP_ADD3:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01>
; AUTO_VEC-NEXT: [[TMP5:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDEX]]
; AUTO_VEC-NEXT: [[TMP6:%.*]] = bitcast float* [[TMP5]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[VEC_IND]], <8 x float>* [[TMP6]], align 4
; AUTO_VEC-NEXT: [[TMP7:%.*]] = getelementptr inbounds float, float* [[TMP5]], i64 8
; AUTO_VEC-NEXT: [[TMP8:%.*]] = bitcast float* [[TMP7]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD]], <8 x float>* [[TMP8]], align 4
; AUTO_VEC-NEXT: [[TMP9:%.*]] = getelementptr inbounds float, float* [[TMP5]], i64 16
; AUTO_VEC-NEXT: [[TMP10:%.*]] = bitcast float* [[TMP9]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD2]], <8 x float>* [[TMP10]], align 4
; AUTO_VEC-NEXT: [[TMP11:%.*]] = getelementptr inbounds float, float* [[TMP5]], i64 24
; AUTO_VEC-NEXT: [[TMP12:%.*]] = bitcast float* [[TMP11]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD3]], <8 x float>* [[TMP12]], align 4
; AUTO_VEC-NEXT: [[INDEX_NEXT:%.*]] = or i64 [[INDEX]], 32
; AUTO_VEC-NEXT: [[VEC_IND_NEXT:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD_1:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 2.000000e+01, float 2.000000e+01, float 2.000000e+01, float 2.000000e+01, float 2.000000e+01, float 2.000000e+01, float 2.000000e+01, float 2.000000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD2_1:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 2.400000e+01, float 2.400000e+01, float 2.400000e+01, float 2.400000e+01, float 2.400000e+01, float 2.400000e+01, float 2.400000e+01, float 2.400000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD3_1:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 2.800000e+01, float 2.800000e+01, float 2.800000e+01, float 2.800000e+01, float 2.800000e+01, float 2.800000e+01, float 2.800000e+01, float 2.800000e+01>
; AUTO_VEC-NEXT: [[TMP13:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDEX_NEXT]]
; AUTO_VEC-NEXT: [[TMP14:%.*]] = bitcast float* [[TMP13]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[VEC_IND_NEXT]], <8 x float>* [[TMP14]], align 4
; AUTO_VEC-NEXT: [[TMP15:%.*]] = getelementptr inbounds float, float* [[TMP13]], i64 8
; AUTO_VEC-NEXT: [[TMP16:%.*]] = bitcast float* [[TMP15]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD_1]], <8 x float>* [[TMP16]], align 4
; AUTO_VEC-NEXT: [[TMP17:%.*]] = getelementptr inbounds float, float* [[TMP13]], i64 16
; AUTO_VEC-NEXT: [[TMP18:%.*]] = bitcast float* [[TMP17]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD2_1]], <8 x float>* [[TMP18]], align 4
; AUTO_VEC-NEXT: [[TMP19:%.*]] = getelementptr inbounds float, float* [[TMP13]], i64 24
; AUTO_VEC-NEXT: [[TMP20:%.*]] = bitcast float* [[TMP19]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD3_1]], <8 x float>* [[TMP20]], align 4
; AUTO_VEC-NEXT: [[INDEX_NEXT_1:%.*]] = or i64 [[INDEX]], 64
; AUTO_VEC-NEXT: [[VEC_IND_NEXT_1:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 3.200000e+01, float 3.200000e+01, float 3.200000e+01, float 3.200000e+01, float 3.200000e+01, float 3.200000e+01, float 3.200000e+01, float 3.200000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD_2:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 3.600000e+01, float 3.600000e+01, float 3.600000e+01, float 3.600000e+01, float 3.600000e+01, float 3.600000e+01, float 3.600000e+01, float 3.600000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD2_2:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 4.000000e+01, float 4.000000e+01, float 4.000000e+01, float 4.000000e+01, float 4.000000e+01, float 4.000000e+01, float 4.000000e+01, float 4.000000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD3_2:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 4.400000e+01, float 4.400000e+01, float 4.400000e+01, float 4.400000e+01, float 4.400000e+01, float 4.400000e+01, float 4.400000e+01, float 4.400000e+01>
; AUTO_VEC-NEXT: [[TMP21:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDEX_NEXT_1]]
; AUTO_VEC-NEXT: [[TMP22:%.*]] = bitcast float* [[TMP21]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[VEC_IND_NEXT_1]], <8 x float>* [[TMP22]], align 4
; AUTO_VEC-NEXT: [[TMP23:%.*]] = getelementptr inbounds float, float* [[TMP21]], i64 8
; AUTO_VEC-NEXT: [[TMP24:%.*]] = bitcast float* [[TMP23]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD_2]], <8 x float>* [[TMP24]], align 4
; AUTO_VEC-NEXT: [[TMP25:%.*]] = getelementptr inbounds float, float* [[TMP21]], i64 16
; AUTO_VEC-NEXT: [[TMP26:%.*]] = bitcast float* [[TMP25]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD2_2]], <8 x float>* [[TMP26]], align 4
; AUTO_VEC-NEXT: [[TMP27:%.*]] = getelementptr inbounds float, float* [[TMP21]], i64 24
; AUTO_VEC-NEXT: [[TMP28:%.*]] = bitcast float* [[TMP27]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD3_2]], <8 x float>* [[TMP28]], align 4
; AUTO_VEC-NEXT: [[INDEX_NEXT_2:%.*]] = or i64 [[INDEX]], 96
; AUTO_VEC-NEXT: [[VEC_IND_NEXT_2:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 4.800000e+01, float 4.800000e+01, float 4.800000e+01, float 4.800000e+01, float 4.800000e+01, float 4.800000e+01, float 4.800000e+01, float 4.800000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD_3:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 5.200000e+01, float 5.200000e+01, float 5.200000e+01, float 5.200000e+01, float 5.200000e+01, float 5.200000e+01, float 5.200000e+01, float 5.200000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD2_3:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 5.600000e+01, float 5.600000e+01, float 5.600000e+01, float 5.600000e+01, float 5.600000e+01, float 5.600000e+01, float 5.600000e+01, float 5.600000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD3_3:%.*]] = fadd fast <8 x float> [[VEC_IND]], <float 6.000000e+01, float 6.000000e+01, float 6.000000e+01, float 6.000000e+01, float 6.000000e+01, float 6.000000e+01, float 6.000000e+01, float 6.000000e+01>
; AUTO_VEC-NEXT: [[TMP29:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDEX_NEXT_2]]
; AUTO_VEC-NEXT: [[TMP30:%.*]] = bitcast float* [[TMP29]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[VEC_IND_NEXT_2]], <8 x float>* [[TMP30]], align 4
; AUTO_VEC-NEXT: [[TMP31:%.*]] = getelementptr inbounds float, float* [[TMP29]], i64 8
; AUTO_VEC-NEXT: [[TMP32:%.*]] = bitcast float* [[TMP31]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD_3]], <8 x float>* [[TMP32]], align 4
; AUTO_VEC-NEXT: [[TMP33:%.*]] = getelementptr inbounds float, float* [[TMP29]], i64 16
; AUTO_VEC-NEXT: [[TMP34:%.*]] = bitcast float* [[TMP33]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD2_3]], <8 x float>* [[TMP34]], align 4
; AUTO_VEC-NEXT: [[TMP35:%.*]] = getelementptr inbounds float, float* [[TMP29]], i64 24
; AUTO_VEC-NEXT: [[TMP36:%.*]] = bitcast float* [[TMP35]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD3_3]], <8 x float>* [[TMP36]], align 4
; AUTO_VEC-NEXT: [[INDEX_NEXT_3]] = add nuw i64 [[INDEX]], 128
; AUTO_VEC-NEXT: [[VEC_IND_NEXT_3]] = fadd fast <8 x float> [[VEC_IND]], <float 6.400000e+01, float 6.400000e+01, float 6.400000e+01, float 6.400000e+01, float 6.400000e+01, float 6.400000e+01, float 6.400000e+01, float 6.400000e+01>
; AUTO_VEC-NEXT: [[NITER_NSUB_3]] = add i64 [[NITER]], -4
; AUTO_VEC-NEXT: [[NITER_NCMP_3:%.*]] = icmp eq i64 [[NITER_NSUB_3]], 0
; AUTO_VEC-NEXT: br i1 [[NITER_NCMP_3]], label [[MIDDLE_BLOCK_UNR_LCSSA]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; AUTO_VEC: middle.block.unr-lcssa:
; AUTO_VEC-NEXT: [[INDEX_UNR:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT_3]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[VEC_IND_UNR:%.*]] = phi <8 x float> [ <float 1.000000e+00, float 1.500000e+00, float 2.000000e+00, float 2.500000e+00, float 3.000000e+00, float 3.500000e+00, float 4.000000e+00, float 4.500000e+00>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT_3]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[LCMP_MOD_NOT:%.*]] = icmp eq i64 [[XTRAITER]], 0
; AUTO_VEC-NEXT: br i1 [[LCMP_MOD_NOT]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY_EPIL:%.*]]
; AUTO_VEC: vector.body.epil:
; AUTO_VEC-NEXT: [[INDEX_EPIL:%.*]] = phi i64 [ [[INDEX_NEXT_EPIL:%.*]], [[VECTOR_BODY_EPIL]] ], [ [[INDEX_UNR]], [[MIDDLE_BLOCK_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[VEC_IND_EPIL:%.*]] = phi <8 x float> [ [[VEC_IND_NEXT_EPIL:%.*]], [[VECTOR_BODY_EPIL]] ], [ [[VEC_IND_UNR]], [[MIDDLE_BLOCK_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ [[EPIL_ITER_SUB:%.*]], [[VECTOR_BODY_EPIL]] ], [ [[XTRAITER]], [[MIDDLE_BLOCK_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[STEP_ADD_EPIL:%.*]] = fadd fast <8 x float> [[VEC_IND_EPIL]], <float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00>
; AUTO_VEC-NEXT: [[STEP_ADD2_EPIL:%.*]] = fadd fast <8 x float> [[VEC_IND_EPIL]], <float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00, float 8.000000e+00>
; AUTO_VEC-NEXT: [[STEP_ADD3_EPIL:%.*]] = fadd fast <8 x float> [[VEC_IND_EPIL]], <float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01, float 1.200000e+01>
; AUTO_VEC-NEXT: [[TMP37:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDEX_EPIL]]
; AUTO_VEC-NEXT: [[TMP38:%.*]] = bitcast float* [[TMP37]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[VEC_IND_EPIL]], <8 x float>* [[TMP38]], align 4
; AUTO_VEC-NEXT: [[TMP39:%.*]] = getelementptr inbounds float, float* [[TMP37]], i64 8
; AUTO_VEC-NEXT: [[TMP40:%.*]] = bitcast float* [[TMP39]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD_EPIL]], <8 x float>* [[TMP40]], align 4
; AUTO_VEC-NEXT: [[TMP41:%.*]] = getelementptr inbounds float, float* [[TMP37]], i64 16
; AUTO_VEC-NEXT: [[TMP42:%.*]] = bitcast float* [[TMP41]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD2_EPIL]], <8 x float>* [[TMP42]], align 4
; AUTO_VEC-NEXT: [[TMP43:%.*]] = getelementptr inbounds float, float* [[TMP37]], i64 24
; AUTO_VEC-NEXT: [[TMP44:%.*]] = bitcast float* [[TMP43]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[STEP_ADD3_EPIL]], <8 x float>* [[TMP44]], align 4
; AUTO_VEC-NEXT: [[INDEX_NEXT_EPIL]] = add nuw i64 [[INDEX_EPIL]], 32
; AUTO_VEC-NEXT: [[VEC_IND_NEXT_EPIL]] = fadd fast <8 x float> [[VEC_IND_EPIL]], <float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01, float 1.600000e+01>
; AUTO_VEC-NEXT: [[EPIL_ITER_SUB]] = add i64 [[EPIL_ITER]], -1
; AUTO_VEC-NEXT: [[EPIL_ITER_CMP_NOT:%.*]] = icmp eq i64 [[EPIL_ITER_SUB]], 0
; AUTO_VEC-NEXT: br i1 [[EPIL_ITER_CMP_NOT]], label [[MIDDLE_BLOCK]], label [[VECTOR_BODY_EPIL]], !llvm.loop [[LOOP2:![0-9]+]]
; AUTO_VEC: middle.block:
; AUTO_VEC-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[ZEXT]]
; AUTO_VEC-NEXT: br i1 [[CMP_N]], label [[FOR_END]], label [[FOR_BODY]]
; AUTO_VEC: for.body:
; AUTO_VEC-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ], [ [[N_VEC]], [[MIDDLE_BLOCK]] ]
; AUTO_VEC-NEXT: [[X_06:%.*]] = phi float [ [[CONV1:%.*]], [[FOR_BODY]] ], [ 1.000000e+00, [[FOR_BODY_PREHEADER]] ], [ [[IND_END]], [[MIDDLE_BLOCK]] ]
; AUTO_VEC-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]]
; AUTO_VEC-NEXT: store float [[X_06]], float* [[ARRAYIDX]], align 4
; AUTO_VEC-NEXT: [[CONV1]] = fadd fast float [[X_06]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; AUTO_VEC-NEXT: [[TMP45:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], [[ZEXT]]
; AUTO_VEC-NEXT: br i1 [[TMP45]], label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; AUTO_VEC: for.end:
; AUTO_VEC-NEXT: ret void
;
entry:
%cmp4 = icmp sgt i32 %N, 0
br i1 %cmp4, label %for.body.preheader, label %for.end
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
%x.06 = phi float [ %conv1, %for.body ], [ 1.000000e+00, %for.body.preheader ]
%arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv
store float %x.06, float* %arrayidx, align 4
%conv1 = fadd fast float %x.06, 5.000000e-01
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %N
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
; The same as the previous, but FP operation has no FMF.
; Vectorization should be rejected.
;void fp_iv_loop2(float * __restrict__ A, int N) {
; float x = 1.0;
; for (int i=0; i < N; ++i) {
; A[i] = x;
; x += 0.5;
; }
;}
define void @fp_iv_loop2(float* noalias nocapture %A, i32 %N) {
; AUTO_VEC-LABEL: @fp_iv_loop2(
; AUTO_VEC-NEXT: entry:
; AUTO_VEC-NEXT: [[CMP4:%.*]] = icmp sgt i32 [[N:%.*]], 0
; AUTO_VEC-NEXT: br i1 [[CMP4]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
; AUTO_VEC: for.body.preheader:
; AUTO_VEC-NEXT: [[ZEXT:%.*]] = zext i32 [[N]] to i64
; AUTO_VEC-NEXT: [[TMP0:%.*]] = add nsw i64 [[ZEXT]], -1
; AUTO_VEC-NEXT: [[XTRAITER:%.*]] = and i64 [[ZEXT]], 7
; AUTO_VEC-NEXT: [[TMP1:%.*]] = icmp ult i64 [[TMP0]], 7
; AUTO_VEC-NEXT: br i1 [[TMP1]], label [[FOR_END_LOOPEXIT_UNR_LCSSA:%.*]], label [[FOR_BODY_PREHEADER_NEW:%.*]]
; AUTO_VEC: for.body.preheader.new:
; AUTO_VEC-NEXT: [[UNROLL_ITER:%.*]] = and i64 [[ZEXT]], 4294967288
; AUTO_VEC-NEXT: br label [[FOR_BODY:%.*]]
; AUTO_VEC: for.body:
; AUTO_VEC-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER_NEW]] ], [ [[INDVARS_IV_NEXT_7:%.*]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[X_06:%.*]] = phi float [ 1.000000e+00, [[FOR_BODY_PREHEADER_NEW]] ], [ [[CONV1_7:%.*]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[NITER:%.*]] = phi i64 [ [[UNROLL_ITER]], [[FOR_BODY_PREHEADER_NEW]] ], [ [[NITER_NSUB_7:%.*]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDVARS_IV]]
; AUTO_VEC-NEXT: store float [[X_06]], float* [[ARRAYIDX]], align 4
; AUTO_VEC-NEXT: [[CONV1:%.*]] = fadd float [[X_06]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT:%.*]] = or i64 [[INDVARS_IV]], 1
; AUTO_VEC-NEXT: [[ARRAYIDX_1:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV_NEXT]]
; AUTO_VEC-NEXT: store float [[CONV1]], float* [[ARRAYIDX_1]], align 4
; AUTO_VEC-NEXT: [[CONV1_1:%.*]] = fadd float [[CONV1]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT_1:%.*]] = or i64 [[INDVARS_IV]], 2
; AUTO_VEC-NEXT: [[ARRAYIDX_2:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV_NEXT_1]]
; AUTO_VEC-NEXT: store float [[CONV1_1]], float* [[ARRAYIDX_2]], align 4
; AUTO_VEC-NEXT: [[CONV1_2:%.*]] = fadd float [[CONV1_1]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT_2:%.*]] = or i64 [[INDVARS_IV]], 3
; AUTO_VEC-NEXT: [[ARRAYIDX_3:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV_NEXT_2]]
; AUTO_VEC-NEXT: store float [[CONV1_2]], float* [[ARRAYIDX_3]], align 4
; AUTO_VEC-NEXT: [[CONV1_3:%.*]] = fadd float [[CONV1_2]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT_3:%.*]] = or i64 [[INDVARS_IV]], 4
; AUTO_VEC-NEXT: [[ARRAYIDX_4:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV_NEXT_3]]
; AUTO_VEC-NEXT: store float [[CONV1_3]], float* [[ARRAYIDX_4]], align 4
; AUTO_VEC-NEXT: [[CONV1_4:%.*]] = fadd float [[CONV1_3]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT_4:%.*]] = or i64 [[INDVARS_IV]], 5
; AUTO_VEC-NEXT: [[ARRAYIDX_5:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV_NEXT_4]]
; AUTO_VEC-NEXT: store float [[CONV1_4]], float* [[ARRAYIDX_5]], align 4
; AUTO_VEC-NEXT: [[CONV1_5:%.*]] = fadd float [[CONV1_4]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT_5:%.*]] = or i64 [[INDVARS_IV]], 6
; AUTO_VEC-NEXT: [[ARRAYIDX_6:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV_NEXT_5]]
; AUTO_VEC-NEXT: store float [[CONV1_5]], float* [[ARRAYIDX_6]], align 4
; AUTO_VEC-NEXT: [[CONV1_6:%.*]] = fadd float [[CONV1_5]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT_6:%.*]] = or i64 [[INDVARS_IV]], 7
; AUTO_VEC-NEXT: [[ARRAYIDX_7:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV_NEXT_6]]
; AUTO_VEC-NEXT: store float [[CONV1_6]], float* [[ARRAYIDX_7]], align 4
; AUTO_VEC-NEXT: [[CONV1_7]] = fadd float [[CONV1_6]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT_7]] = add nuw nsw i64 [[INDVARS_IV]], 8
; AUTO_VEC-NEXT: [[NITER_NSUB_7]] = add i64 [[NITER]], -8
; AUTO_VEC-NEXT: [[NITER_NCMP_7:%.*]] = icmp eq i64 [[NITER_NSUB_7]], 0
; AUTO_VEC-NEXT: br i1 [[NITER_NCMP_7]], label [[FOR_END_LOOPEXIT_UNR_LCSSA]], label [[FOR_BODY]]
; AUTO_VEC: for.end.loopexit.unr-lcssa:
; AUTO_VEC-NEXT: [[INDVARS_IV_UNR:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT_7]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[X_06_UNR:%.*]] = phi float [ 1.000000e+00, [[FOR_BODY_PREHEADER]] ], [ [[CONV1_7]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[LCMP_MOD_NOT:%.*]] = icmp eq i64 [[XTRAITER]], 0
; AUTO_VEC-NEXT: br i1 [[LCMP_MOD_NOT]], label [[FOR_END]], label [[FOR_BODY_EPIL:%.*]]
; AUTO_VEC: for.body.epil:
; AUTO_VEC-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[FOR_BODY_EPIL]] ], [ [[INDVARS_IV_UNR]], [[FOR_END_LOOPEXIT_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[X_06_EPIL:%.*]] = phi float [ [[CONV1_EPIL:%.*]], [[FOR_BODY_EPIL]] ], [ [[X_06_UNR]], [[FOR_END_LOOPEXIT_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ [[EPIL_ITER_SUB:%.*]], [[FOR_BODY_EPIL]] ], [ [[XTRAITER]], [[FOR_END_LOOPEXIT_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[ARRAYIDX_EPIL:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV_EPIL]]
; AUTO_VEC-NEXT: store float [[X_06_EPIL]], float* [[ARRAYIDX_EPIL]], align 4
; AUTO_VEC-NEXT: [[CONV1_EPIL]] = fadd float [[X_06_EPIL]], 5.000000e-01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT_EPIL]] = add nuw nsw i64 [[INDVARS_IV_EPIL]], 1
; AUTO_VEC-NEXT: [[EPIL_ITER_SUB]] = add i64 [[EPIL_ITER]], -1
; AUTO_VEC-NEXT: [[EPIL_ITER_CMP_NOT:%.*]] = icmp eq i64 [[EPIL_ITER_SUB]], 0
; AUTO_VEC-NEXT: br i1 [[EPIL_ITER_CMP_NOT]], label [[FOR_END]], label [[FOR_BODY_EPIL]], !llvm.loop [[LOOP6:![0-9]+]]
; AUTO_VEC: for.end:
; AUTO_VEC-NEXT: ret void
;
entry:
%cmp4 = icmp sgt i32 %N, 0
br i1 %cmp4, label %for.body.preheader, label %for.end
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
%x.06 = phi float [ %conv1, %for.body ], [ 1.000000e+00, %for.body.preheader ]
%arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv
store float %x.06, float* %arrayidx, align 4
%conv1 = fadd float %x.06, 5.000000e-01
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %N
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
define double @external_use_with_fast_math(double* %a, i64 %n) {
; AUTO_VEC-LABEL: @external_use_with_fast_math(
; AUTO_VEC-NEXT: entry:
; AUTO_VEC-NEXT: [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 1)
; AUTO_VEC-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[SMAX]], 16
; AUTO_VEC-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[FOR_BODY:%.*]], label [[VECTOR_PH:%.*]]
; AUTO_VEC: vector.ph:
; AUTO_VEC-NEXT: [[N_VEC:%.*]] = and i64 [[SMAX]], 9223372036854775792
; AUTO_VEC-NEXT: [[CAST_CRD:%.*]] = sitofp i64 [[N_VEC]] to double
; AUTO_VEC-NEXT: [[TMP0:%.*]] = fmul fast double [[CAST_CRD]], 3.000000e+00
; AUTO_VEC-NEXT: [[TMP1:%.*]] = add nsw i64 [[N_VEC]], -16
; AUTO_VEC-NEXT: [[TMP2:%.*]] = lshr exact i64 [[TMP1]], 4
; AUTO_VEC-NEXT: [[TMP3:%.*]] = add nuw nsw i64 [[TMP2]], 1
; AUTO_VEC-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP3]], 3
; AUTO_VEC-NEXT: [[TMP4:%.*]] = icmp ult i64 [[TMP1]], 48
; AUTO_VEC-NEXT: br i1 [[TMP4]], label [[MIDDLE_BLOCK_UNR_LCSSA:%.*]], label [[VECTOR_PH_NEW:%.*]]
; AUTO_VEC: vector.ph.new:
; AUTO_VEC-NEXT: [[UNROLL_ITER:%.*]] = and i64 [[TMP3]], 2305843009213693948
; AUTO_VEC-NEXT: br label [[VECTOR_BODY:%.*]]
; AUTO_VEC: vector.body:
; AUTO_VEC-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH_NEW]] ], [ [[INDEX_NEXT_3:%.*]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[VEC_IND:%.*]] = phi <4 x double> [ <double 0.000000e+00, double 3.000000e+00, double 6.000000e+00, double 9.000000e+00>, [[VECTOR_PH_NEW]] ], [ [[VEC_IND_NEXT_3:%.*]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[NITER:%.*]] = phi i64 [ [[UNROLL_ITER]], [[VECTOR_PH_NEW]] ], [ [[NITER_NSUB_3:%.*]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[STEP_ADD:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 1.200000e+01, double 1.200000e+01, double 1.200000e+01, double 1.200000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD2:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 2.400000e+01, double 2.400000e+01, double 2.400000e+01, double 2.400000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD3:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 3.600000e+01, double 3.600000e+01, double 3.600000e+01, double 3.600000e+01>
; AUTO_VEC-NEXT: [[TMP5:%.*]] = getelementptr double, double* [[A:%.*]], i64 [[INDEX]]
; AUTO_VEC-NEXT: [[TMP6:%.*]] = bitcast double* [[TMP5]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[VEC_IND]], <4 x double>* [[TMP6]], align 8
; AUTO_VEC-NEXT: [[TMP7:%.*]] = getelementptr double, double* [[TMP5]], i64 4
; AUTO_VEC-NEXT: [[TMP8:%.*]] = bitcast double* [[TMP7]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD]], <4 x double>* [[TMP8]], align 8
; AUTO_VEC-NEXT: [[TMP9:%.*]] = getelementptr double, double* [[TMP5]], i64 8
; AUTO_VEC-NEXT: [[TMP10:%.*]] = bitcast double* [[TMP9]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD2]], <4 x double>* [[TMP10]], align 8
; AUTO_VEC-NEXT: [[TMP11:%.*]] = getelementptr double, double* [[TMP5]], i64 12
; AUTO_VEC-NEXT: [[TMP12:%.*]] = bitcast double* [[TMP11]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD3]], <4 x double>* [[TMP12]], align 8
; AUTO_VEC-NEXT: [[INDEX_NEXT:%.*]] = or i64 [[INDEX]], 16
; AUTO_VEC-NEXT: [[VEC_IND_NEXT:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 4.800000e+01, double 4.800000e+01, double 4.800000e+01, double 4.800000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD_1:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 6.000000e+01, double 6.000000e+01, double 6.000000e+01, double 6.000000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD2_1:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 7.200000e+01, double 7.200000e+01, double 7.200000e+01, double 7.200000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD3_1:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 8.400000e+01, double 8.400000e+01, double 8.400000e+01, double 8.400000e+01>
; AUTO_VEC-NEXT: [[TMP13:%.*]] = getelementptr double, double* [[A]], i64 [[INDEX_NEXT]]
; AUTO_VEC-NEXT: [[TMP14:%.*]] = bitcast double* [[TMP13]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[VEC_IND_NEXT]], <4 x double>* [[TMP14]], align 8
; AUTO_VEC-NEXT: [[TMP15:%.*]] = getelementptr double, double* [[TMP13]], i64 4
; AUTO_VEC-NEXT: [[TMP16:%.*]] = bitcast double* [[TMP15]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD_1]], <4 x double>* [[TMP16]], align 8
; AUTO_VEC-NEXT: [[TMP17:%.*]] = getelementptr double, double* [[TMP13]], i64 8
; AUTO_VEC-NEXT: [[TMP18:%.*]] = bitcast double* [[TMP17]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD2_1]], <4 x double>* [[TMP18]], align 8
; AUTO_VEC-NEXT: [[TMP19:%.*]] = getelementptr double, double* [[TMP13]], i64 12
; AUTO_VEC-NEXT: [[TMP20:%.*]] = bitcast double* [[TMP19]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD3_1]], <4 x double>* [[TMP20]], align 8
; AUTO_VEC-NEXT: [[INDEX_NEXT_1:%.*]] = or i64 [[INDEX]], 32
; AUTO_VEC-NEXT: [[VEC_IND_NEXT_1:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 9.600000e+01, double 9.600000e+01, double 9.600000e+01, double 9.600000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD_2:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 1.080000e+02, double 1.080000e+02, double 1.080000e+02, double 1.080000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD2_2:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 1.200000e+02, double 1.200000e+02, double 1.200000e+02, double 1.200000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD3_2:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 1.320000e+02, double 1.320000e+02, double 1.320000e+02, double 1.320000e+02>
; AUTO_VEC-NEXT: [[TMP21:%.*]] = getelementptr double, double* [[A]], i64 [[INDEX_NEXT_1]]
; AUTO_VEC-NEXT: [[TMP22:%.*]] = bitcast double* [[TMP21]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[VEC_IND_NEXT_1]], <4 x double>* [[TMP22]], align 8
; AUTO_VEC-NEXT: [[TMP23:%.*]] = getelementptr double, double* [[TMP21]], i64 4
; AUTO_VEC-NEXT: [[TMP24:%.*]] = bitcast double* [[TMP23]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD_2]], <4 x double>* [[TMP24]], align 8
; AUTO_VEC-NEXT: [[TMP25:%.*]] = getelementptr double, double* [[TMP21]], i64 8
; AUTO_VEC-NEXT: [[TMP26:%.*]] = bitcast double* [[TMP25]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD2_2]], <4 x double>* [[TMP26]], align 8
; AUTO_VEC-NEXT: [[TMP27:%.*]] = getelementptr double, double* [[TMP21]], i64 12
; AUTO_VEC-NEXT: [[TMP28:%.*]] = bitcast double* [[TMP27]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD3_2]], <4 x double>* [[TMP28]], align 8
; AUTO_VEC-NEXT: [[INDEX_NEXT_2:%.*]] = or i64 [[INDEX]], 48
; AUTO_VEC-NEXT: [[VEC_IND_NEXT_2:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 1.440000e+02, double 1.440000e+02, double 1.440000e+02, double 1.440000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD_3:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 1.560000e+02, double 1.560000e+02, double 1.560000e+02, double 1.560000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD2_3:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 1.680000e+02, double 1.680000e+02, double 1.680000e+02, double 1.680000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD3_3:%.*]] = fadd fast <4 x double> [[VEC_IND]], <double 1.800000e+02, double 1.800000e+02, double 1.800000e+02, double 1.800000e+02>
; AUTO_VEC-NEXT: [[TMP29:%.*]] = getelementptr double, double* [[A]], i64 [[INDEX_NEXT_2]]
; AUTO_VEC-NEXT: [[TMP30:%.*]] = bitcast double* [[TMP29]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[VEC_IND_NEXT_2]], <4 x double>* [[TMP30]], align 8
; AUTO_VEC-NEXT: [[TMP31:%.*]] = getelementptr double, double* [[TMP29]], i64 4
; AUTO_VEC-NEXT: [[TMP32:%.*]] = bitcast double* [[TMP31]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD_3]], <4 x double>* [[TMP32]], align 8
; AUTO_VEC-NEXT: [[TMP33:%.*]] = getelementptr double, double* [[TMP29]], i64 8
; AUTO_VEC-NEXT: [[TMP34:%.*]] = bitcast double* [[TMP33]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD2_3]], <4 x double>* [[TMP34]], align 8
; AUTO_VEC-NEXT: [[TMP35:%.*]] = getelementptr double, double* [[TMP29]], i64 12
; AUTO_VEC-NEXT: [[TMP36:%.*]] = bitcast double* [[TMP35]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD3_3]], <4 x double>* [[TMP36]], align 8
; AUTO_VEC-NEXT: [[INDEX_NEXT_3]] = add nuw i64 [[INDEX]], 64
; AUTO_VEC-NEXT: [[VEC_IND_NEXT_3]] = fadd fast <4 x double> [[VEC_IND]], <double 1.920000e+02, double 1.920000e+02, double 1.920000e+02, double 1.920000e+02>
; AUTO_VEC-NEXT: [[NITER_NSUB_3]] = add i64 [[NITER]], -4
; AUTO_VEC-NEXT: [[NITER_NCMP_3:%.*]] = icmp eq i64 [[NITER_NSUB_3]], 0
; AUTO_VEC-NEXT: br i1 [[NITER_NCMP_3]], label [[MIDDLE_BLOCK_UNR_LCSSA]], label [[VECTOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; AUTO_VEC: middle.block.unr-lcssa:
; AUTO_VEC-NEXT: [[INDEX_UNR:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT_3]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[VEC_IND_UNR:%.*]] = phi <4 x double> [ <double 0.000000e+00, double 3.000000e+00, double 6.000000e+00, double 9.000000e+00>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT_3]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[LCMP_MOD_NOT:%.*]] = icmp eq i64 [[XTRAITER]], 0
; AUTO_VEC-NEXT: br i1 [[LCMP_MOD_NOT]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY_EPIL:%.*]]
; AUTO_VEC: vector.body.epil:
; AUTO_VEC-NEXT: [[INDEX_EPIL:%.*]] = phi i64 [ [[INDEX_NEXT_EPIL:%.*]], [[VECTOR_BODY_EPIL]] ], [ [[INDEX_UNR]], [[MIDDLE_BLOCK_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[VEC_IND_EPIL:%.*]] = phi <4 x double> [ [[VEC_IND_NEXT_EPIL:%.*]], [[VECTOR_BODY_EPIL]] ], [ [[VEC_IND_UNR]], [[MIDDLE_BLOCK_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ [[EPIL_ITER_SUB:%.*]], [[VECTOR_BODY_EPIL]] ], [ [[XTRAITER]], [[MIDDLE_BLOCK_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[STEP_ADD_EPIL:%.*]] = fadd fast <4 x double> [[VEC_IND_EPIL]], <double 1.200000e+01, double 1.200000e+01, double 1.200000e+01, double 1.200000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD2_EPIL:%.*]] = fadd fast <4 x double> [[VEC_IND_EPIL]], <double 2.400000e+01, double 2.400000e+01, double 2.400000e+01, double 2.400000e+01>
; AUTO_VEC-NEXT: [[STEP_ADD3_EPIL:%.*]] = fadd fast <4 x double> [[VEC_IND_EPIL]], <double 3.600000e+01, double 3.600000e+01, double 3.600000e+01, double 3.600000e+01>
; AUTO_VEC-NEXT: [[TMP37:%.*]] = getelementptr double, double* [[A]], i64 [[INDEX_EPIL]]
; AUTO_VEC-NEXT: [[TMP38:%.*]] = bitcast double* [[TMP37]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[VEC_IND_EPIL]], <4 x double>* [[TMP38]], align 8
; AUTO_VEC-NEXT: [[TMP39:%.*]] = getelementptr double, double* [[TMP37]], i64 4
; AUTO_VEC-NEXT: [[TMP40:%.*]] = bitcast double* [[TMP39]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD_EPIL]], <4 x double>* [[TMP40]], align 8
; AUTO_VEC-NEXT: [[TMP41:%.*]] = getelementptr double, double* [[TMP37]], i64 8
; AUTO_VEC-NEXT: [[TMP42:%.*]] = bitcast double* [[TMP41]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD2_EPIL]], <4 x double>* [[TMP42]], align 8
; AUTO_VEC-NEXT: [[TMP43:%.*]] = getelementptr double, double* [[TMP37]], i64 12
; AUTO_VEC-NEXT: [[TMP44:%.*]] = bitcast double* [[TMP43]] to <4 x double>*
; AUTO_VEC-NEXT: store <4 x double> [[STEP_ADD3_EPIL]], <4 x double>* [[TMP44]], align 8
; AUTO_VEC-NEXT: [[INDEX_NEXT_EPIL]] = add nuw i64 [[INDEX_EPIL]], 16
; AUTO_VEC-NEXT: [[VEC_IND_NEXT_EPIL]] = fadd fast <4 x double> [[VEC_IND_EPIL]], <double 4.800000e+01, double 4.800000e+01, double 4.800000e+01, double 4.800000e+01>
; AUTO_VEC-NEXT: [[EPIL_ITER_SUB]] = add i64 [[EPIL_ITER]], -1
; AUTO_VEC-NEXT: [[EPIL_ITER_CMP_NOT:%.*]] = icmp eq i64 [[EPIL_ITER_SUB]], 0
; AUTO_VEC-NEXT: br i1 [[EPIL_ITER_CMP_NOT]], label [[MIDDLE_BLOCK]], label [[VECTOR_BODY_EPIL]], !llvm.loop [[LOOP8:![0-9]+]]
; AUTO_VEC: middle.block:
; AUTO_VEC-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[SMAX]], [[N_VEC]]
; AUTO_VEC-NEXT: [[TMP45:%.*]] = add nsw i64 [[N_VEC]], -1
; AUTO_VEC-NEXT: [[CAST_CMO:%.*]] = sitofp i64 [[TMP45]] to double
; AUTO_VEC-NEXT: [[TMP46:%.*]] = fmul fast double [[CAST_CMO]], 3.000000e+00
; AUTO_VEC-NEXT: br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[FOR_BODY]]
; AUTO_VEC: for.body:
; AUTO_VEC-NEXT: [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ], [ [[N_VEC]], [[MIDDLE_BLOCK]] ]
; AUTO_VEC-NEXT: [[J:%.*]] = phi double [ [[J_NEXT:%.*]], [[FOR_BODY]] ], [ 0.000000e+00, [[ENTRY]] ], [ [[TMP0]], [[MIDDLE_BLOCK]] ]
; AUTO_VEC-NEXT: [[T0:%.*]] = getelementptr double, double* [[A]], i64 [[I]]
; AUTO_VEC-NEXT: store double [[J]], double* [[T0]], align 8
; AUTO_VEC-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; AUTO_VEC-NEXT: [[J_NEXT]] = fadd fast double [[J]], 3.000000e+00
; AUTO_VEC-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[I_NEXT]], [[SMAX]]
; AUTO_VEC-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; AUTO_VEC: for.end:
; AUTO_VEC-NEXT: [[J_LCSSA:%.*]] = phi double [ [[TMP46]], [[MIDDLE_BLOCK]] ], [ [[J]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: ret double [[J_LCSSA]]
;
entry:
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [%i.next, %for.body]
%j = phi double [ 0.0, %entry ], [ %j.next, %for.body ]
%t0 = getelementptr double, double* %a, i64 %i
store double %j, double* %t0
%i.next = add i64 %i, 1
%j.next = fadd fast double %j, 3.0
%cond = icmp slt i64 %i.next, %n
br i1 %cond, label %for.body, label %for.end
for.end:
%t1 = phi double [ %j, %for.body ]
ret double %t1
}
define double @external_use_without_fast_math(double* %a, i64 %n) {
; AUTO_VEC-LABEL: @external_use_without_fast_math(
; AUTO_VEC-NEXT: entry:
; AUTO_VEC-NEXT: [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 1)
; AUTO_VEC-NEXT: [[TMP0:%.*]] = add nsw i64 [[SMAX]], -1
; AUTO_VEC-NEXT: [[XTRAITER:%.*]] = and i64 [[SMAX]], 7
; AUTO_VEC-NEXT: [[TMP1:%.*]] = icmp ult i64 [[TMP0]], 7
; AUTO_VEC-NEXT: br i1 [[TMP1]], label [[FOR_END_UNR_LCSSA:%.*]], label [[ENTRY_NEW:%.*]]
; AUTO_VEC: entry.new:
; AUTO_VEC-NEXT: [[UNROLL_ITER:%.*]] = and i64 [[SMAX]], 9223372036854775800
; AUTO_VEC-NEXT: br label [[FOR_BODY:%.*]]
; AUTO_VEC: for.body:
; AUTO_VEC-NEXT: [[I:%.*]] = phi i64 [ 0, [[ENTRY_NEW]] ], [ [[I_NEXT_7:%.*]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[J:%.*]] = phi double [ 0.000000e+00, [[ENTRY_NEW]] ], [ [[J_NEXT_7:%.*]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[NITER:%.*]] = phi i64 [ [[UNROLL_ITER]], [[ENTRY_NEW]] ], [ [[NITER_NSUB_7:%.*]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[T0:%.*]] = getelementptr double, double* [[A:%.*]], i64 [[I]]
; AUTO_VEC-NEXT: store double [[J]], double* [[T0]], align 8
; AUTO_VEC-NEXT: [[I_NEXT:%.*]] = or i64 [[I]], 1
; AUTO_VEC-NEXT: [[J_NEXT:%.*]] = fadd double [[J]], 3.000000e+00
; AUTO_VEC-NEXT: [[T0_1:%.*]] = getelementptr double, double* [[A]], i64 [[I_NEXT]]
; AUTO_VEC-NEXT: store double [[J_NEXT]], double* [[T0_1]], align 8
; AUTO_VEC-NEXT: [[I_NEXT_1:%.*]] = or i64 [[I]], 2
; AUTO_VEC-NEXT: [[J_NEXT_1:%.*]] = fadd double [[J_NEXT]], 3.000000e+00
; AUTO_VEC-NEXT: [[T0_2:%.*]] = getelementptr double, double* [[A]], i64 [[I_NEXT_1]]
; AUTO_VEC-NEXT: store double [[J_NEXT_1]], double* [[T0_2]], align 8
; AUTO_VEC-NEXT: [[I_NEXT_2:%.*]] = or i64 [[I]], 3
; AUTO_VEC-NEXT: [[J_NEXT_2:%.*]] = fadd double [[J_NEXT_1]], 3.000000e+00
; AUTO_VEC-NEXT: [[T0_3:%.*]] = getelementptr double, double* [[A]], i64 [[I_NEXT_2]]
; AUTO_VEC-NEXT: store double [[J_NEXT_2]], double* [[T0_3]], align 8
; AUTO_VEC-NEXT: [[I_NEXT_3:%.*]] = or i64 [[I]], 4
; AUTO_VEC-NEXT: [[J_NEXT_3:%.*]] = fadd double [[J_NEXT_2]], 3.000000e+00
; AUTO_VEC-NEXT: [[T0_4:%.*]] = getelementptr double, double* [[A]], i64 [[I_NEXT_3]]
; AUTO_VEC-NEXT: store double [[J_NEXT_3]], double* [[T0_4]], align 8
; AUTO_VEC-NEXT: [[I_NEXT_4:%.*]] = or i64 [[I]], 5
; AUTO_VEC-NEXT: [[J_NEXT_4:%.*]] = fadd double [[J_NEXT_3]], 3.000000e+00
; AUTO_VEC-NEXT: [[T0_5:%.*]] = getelementptr double, double* [[A]], i64 [[I_NEXT_4]]
; AUTO_VEC-NEXT: store double [[J_NEXT_4]], double* [[T0_5]], align 8
; AUTO_VEC-NEXT: [[I_NEXT_5:%.*]] = or i64 [[I]], 6
; AUTO_VEC-NEXT: [[J_NEXT_5:%.*]] = fadd double [[J_NEXT_4]], 3.000000e+00
; AUTO_VEC-NEXT: [[T0_6:%.*]] = getelementptr double, double* [[A]], i64 [[I_NEXT_5]]
; AUTO_VEC-NEXT: store double [[J_NEXT_5]], double* [[T0_6]], align 8
; AUTO_VEC-NEXT: [[I_NEXT_6:%.*]] = or i64 [[I]], 7
; AUTO_VEC-NEXT: [[J_NEXT_6:%.*]] = fadd double [[J_NEXT_5]], 3.000000e+00
; AUTO_VEC-NEXT: [[T0_7:%.*]] = getelementptr double, double* [[A]], i64 [[I_NEXT_6]]
; AUTO_VEC-NEXT: store double [[J_NEXT_6]], double* [[T0_7]], align 8
; AUTO_VEC-NEXT: [[I_NEXT_7]] = add nuw nsw i64 [[I]], 8
; AUTO_VEC-NEXT: [[J_NEXT_7]] = fadd double [[J_NEXT_6]], 3.000000e+00
; AUTO_VEC-NEXT: [[NITER_NSUB_7]] = add i64 [[NITER]], -8
; AUTO_VEC-NEXT: [[NITER_NCMP_7:%.*]] = icmp eq i64 [[NITER_NSUB_7]], 0
; AUTO_VEC-NEXT: br i1 [[NITER_NCMP_7]], label [[FOR_END_UNR_LCSSA]], label [[FOR_BODY]]
; AUTO_VEC: for.end.unr-lcssa:
; AUTO_VEC-NEXT: [[J_LCSSA_PH:%.*]] = phi double [ undef, [[ENTRY:%.*]] ], [ [[J_NEXT_6]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[I_UNR:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[I_NEXT_7]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[J_UNR:%.*]] = phi double [ 0.000000e+00, [[ENTRY]] ], [ [[J_NEXT_7]], [[FOR_BODY]] ]
; AUTO_VEC-NEXT: [[LCMP_MOD_NOT:%.*]] = icmp eq i64 [[XTRAITER]], 0
; AUTO_VEC-NEXT: br i1 [[LCMP_MOD_NOT]], label [[FOR_END:%.*]], label [[FOR_BODY_EPIL:%.*]]
; AUTO_VEC: for.body.epil:
; AUTO_VEC-NEXT: [[I_EPIL:%.*]] = phi i64 [ [[I_NEXT_EPIL:%.*]], [[FOR_BODY_EPIL]] ], [ [[I_UNR]], [[FOR_END_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[J_EPIL:%.*]] = phi double [ [[J_NEXT_EPIL:%.*]], [[FOR_BODY_EPIL]] ], [ [[J_UNR]], [[FOR_END_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ [[EPIL_ITER_SUB:%.*]], [[FOR_BODY_EPIL]] ], [ [[XTRAITER]], [[FOR_END_UNR_LCSSA]] ]
; AUTO_VEC-NEXT: [[T0_EPIL:%.*]] = getelementptr double, double* [[A]], i64 [[I_EPIL]]
; AUTO_VEC-NEXT: store double [[J_EPIL]], double* [[T0_EPIL]], align 8
; AUTO_VEC-NEXT: [[I_NEXT_EPIL]] = add nuw nsw i64 [[I_EPIL]], 1
; AUTO_VEC-NEXT: [[J_NEXT_EPIL]] = fadd double [[J_EPIL]], 3.000000e+00
; AUTO_VEC-NEXT: [[EPIL_ITER_SUB]] = add i64 [[EPIL_ITER]], -1
; AUTO_VEC-NEXT: [[EPIL_ITER_CMP_NOT:%.*]] = icmp eq i64 [[EPIL_ITER_SUB]], 0
; AUTO_VEC-NEXT: br i1 [[EPIL_ITER_CMP_NOT]], label [[FOR_END]], label [[FOR_BODY_EPIL]], !llvm.loop [[LOOP10:![0-9]+]]
; AUTO_VEC: for.end:
; AUTO_VEC-NEXT: [[J_LCSSA:%.*]] = phi double [ [[J_LCSSA_PH]], [[FOR_END_UNR_LCSSA]] ], [ [[J_EPIL]], [[FOR_BODY_EPIL]] ]
; AUTO_VEC-NEXT: ret double [[J_LCSSA]]
;
entry:
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [%i.next, %for.body]
%j = phi double [ 0.0, %entry ], [ %j.next, %for.body ]
%t0 = getelementptr double, double* %a, i64 %i
store double %j, double* %t0
%i.next = add i64 %i, 1
%j.next = fadd double %j, 3.0
%cond = icmp slt i64 %i.next, %n
br i1 %cond, label %for.body, label %for.end
for.end:
%t1 = phi double [ %j, %for.body ]
ret double %t1
}
;; void fadd_induction(float *p, unsigned N) {
;; float x = 1.0f;
;; for (unsigned i=0; i!=N; ++i) {
;; p[i] = p[i] + x;
;; x += 42.0f;
;; }
;; }
define void @fadd_reassoc_FMF(float* nocapture %p, i32 %N) {
; AUTO_VEC-LABEL: @fadd_reassoc_FMF(
; AUTO_VEC-NEXT: entry:
; AUTO_VEC-NEXT: [[CMP_NOT11:%.*]] = icmp eq i32 [[N:%.*]], 0
; AUTO_VEC-NEXT: br i1 [[CMP_NOT11]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY_PREHEADER:%.*]]
; AUTO_VEC: for.body.preheader:
; AUTO_VEC-NEXT: [[TMP0:%.*]] = zext i32 [[N]] to i64
; AUTO_VEC-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N]], 32
; AUTO_VEC-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[FOR_BODY:%.*]], label [[VECTOR_PH:%.*]]
; AUTO_VEC: vector.ph:
; AUTO_VEC-NEXT: [[N_VEC:%.*]] = and i64 [[TMP0]], 4294967264
; AUTO_VEC-NEXT: [[CAST_CRD:%.*]] = sitofp i64 [[N_VEC]] to float
; AUTO_VEC-NEXT: [[TMP1:%.*]] = fmul reassoc float [[CAST_CRD]], 4.200000e+01
; AUTO_VEC-NEXT: [[IND_END:%.*]] = fadd reassoc float [[TMP1]], 1.000000e+00
; AUTO_VEC-NEXT: [[TMP2:%.*]] = add nsw i64 [[N_VEC]], -32
; AUTO_VEC-NEXT: [[TMP3:%.*]] = lshr exact i64 [[TMP2]], 5
; AUTO_VEC-NEXT: [[TMP4:%.*]] = add nuw nsw i64 [[TMP3]], 1
; AUTO_VEC-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP4]], 1
; AUTO_VEC-NEXT: [[TMP5:%.*]] = icmp eq i64 [[TMP2]], 0
; AUTO_VEC-NEXT: br i1 [[TMP5]], label [[MIDDLE_BLOCK_UNR_LCSSA:%.*]], label [[VECTOR_PH_NEW:%.*]]
; AUTO_VEC: vector.ph.new:
; AUTO_VEC-NEXT: [[UNROLL_ITER:%.*]] = and i64 [[TMP4]], 1152921504606846974
; AUTO_VEC-NEXT: br label [[VECTOR_BODY:%.*]]
; AUTO_VEC: vector.body:
; AUTO_VEC-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH_NEW]] ], [ [[INDEX_NEXT_1:%.*]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[VEC_IND:%.*]] = phi <8 x float> [ <float 1.000000e+00, float 4.300000e+01, float 8.500000e+01, float 1.270000e+02, float 1.690000e+02, float 2.110000e+02, float 2.530000e+02, float 2.950000e+02>, [[VECTOR_PH_NEW]] ], [ [[VEC_IND_NEXT_1:%.*]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[NITER:%.*]] = phi i64 [ [[UNROLL_ITER]], [[VECTOR_PH_NEW]] ], [ [[NITER_NSUB_1:%.*]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[STEP_ADD:%.*]] = fadd reassoc <8 x float> [[VEC_IND]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD2:%.*]] = fadd reassoc <8 x float> [[STEP_ADD]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD3:%.*]] = fadd reassoc <8 x float> [[STEP_ADD2]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[TMP6:%.*]] = getelementptr inbounds float, float* [[P:%.*]], i64 [[INDEX]]
; AUTO_VEC-NEXT: [[TMP7:%.*]] = bitcast float* [[TMP6]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD:%.*]] = load <8 x float>, <8 x float>* [[TMP7]], align 4
; AUTO_VEC-NEXT: [[TMP8:%.*]] = getelementptr inbounds float, float* [[TMP6]], i64 8
; AUTO_VEC-NEXT: [[TMP9:%.*]] = bitcast float* [[TMP8]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD5:%.*]] = load <8 x float>, <8 x float>* [[TMP9]], align 4
; AUTO_VEC-NEXT: [[TMP10:%.*]] = getelementptr inbounds float, float* [[TMP6]], i64 16
; AUTO_VEC-NEXT: [[TMP11:%.*]] = bitcast float* [[TMP10]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD6:%.*]] = load <8 x float>, <8 x float>* [[TMP11]], align 4
; AUTO_VEC-NEXT: [[TMP12:%.*]] = getelementptr inbounds float, float* [[TMP6]], i64 24
; AUTO_VEC-NEXT: [[TMP13:%.*]] = bitcast float* [[TMP12]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD7:%.*]] = load <8 x float>, <8 x float>* [[TMP13]], align 4
; AUTO_VEC-NEXT: [[TMP14:%.*]] = fadd reassoc <8 x float> [[VEC_IND]], [[WIDE_LOAD]]
; AUTO_VEC-NEXT: [[TMP15:%.*]] = fadd reassoc <8 x float> [[STEP_ADD]], [[WIDE_LOAD5]]
; AUTO_VEC-NEXT: [[TMP16:%.*]] = fadd reassoc <8 x float> [[STEP_ADD2]], [[WIDE_LOAD6]]
; AUTO_VEC-NEXT: [[TMP17:%.*]] = fadd reassoc <8 x float> [[STEP_ADD3]], [[WIDE_LOAD7]]
; AUTO_VEC-NEXT: [[TMP18:%.*]] = bitcast float* [[TMP6]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP14]], <8 x float>* [[TMP18]], align 4
; AUTO_VEC-NEXT: [[TMP19:%.*]] = bitcast float* [[TMP8]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP15]], <8 x float>* [[TMP19]], align 4
; AUTO_VEC-NEXT: [[TMP20:%.*]] = bitcast float* [[TMP10]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP16]], <8 x float>* [[TMP20]], align 4
; AUTO_VEC-NEXT: [[TMP21:%.*]] = bitcast float* [[TMP12]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP17]], <8 x float>* [[TMP21]], align 4
; AUTO_VEC-NEXT: [[INDEX_NEXT:%.*]] = or i64 [[INDEX]], 32
; AUTO_VEC-NEXT: [[VEC_IND_NEXT:%.*]] = fadd reassoc <8 x float> [[STEP_ADD3]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD_1:%.*]] = fadd reassoc <8 x float> [[VEC_IND_NEXT]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD2_1:%.*]] = fadd reassoc <8 x float> [[STEP_ADD_1]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD3_1:%.*]] = fadd reassoc <8 x float> [[STEP_ADD2_1]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[TMP22:%.*]] = getelementptr inbounds float, float* [[P]], i64 [[INDEX_NEXT]]
; AUTO_VEC-NEXT: [[TMP23:%.*]] = bitcast float* [[TMP22]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD_1:%.*]] = load <8 x float>, <8 x float>* [[TMP23]], align 4
; AUTO_VEC-NEXT: [[TMP24:%.*]] = getelementptr inbounds float, float* [[TMP22]], i64 8
; AUTO_VEC-NEXT: [[TMP25:%.*]] = bitcast float* [[TMP24]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD5_1:%.*]] = load <8 x float>, <8 x float>* [[TMP25]], align 4
; AUTO_VEC-NEXT: [[TMP26:%.*]] = getelementptr inbounds float, float* [[TMP22]], i64 16
; AUTO_VEC-NEXT: [[TMP27:%.*]] = bitcast float* [[TMP26]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD6_1:%.*]] = load <8 x float>, <8 x float>* [[TMP27]], align 4
; AUTO_VEC-NEXT: [[TMP28:%.*]] = getelementptr inbounds float, float* [[TMP22]], i64 24
; AUTO_VEC-NEXT: [[TMP29:%.*]] = bitcast float* [[TMP28]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD7_1:%.*]] = load <8 x float>, <8 x float>* [[TMP29]], align 4
; AUTO_VEC-NEXT: [[TMP30:%.*]] = fadd reassoc <8 x float> [[VEC_IND_NEXT]], [[WIDE_LOAD_1]]
; AUTO_VEC-NEXT: [[TMP31:%.*]] = fadd reassoc <8 x float> [[STEP_ADD_1]], [[WIDE_LOAD5_1]]
; AUTO_VEC-NEXT: [[TMP32:%.*]] = fadd reassoc <8 x float> [[STEP_ADD2_1]], [[WIDE_LOAD6_1]]
; AUTO_VEC-NEXT: [[TMP33:%.*]] = fadd reassoc <8 x float> [[STEP_ADD3_1]], [[WIDE_LOAD7_1]]
; AUTO_VEC-NEXT: [[TMP34:%.*]] = bitcast float* [[TMP22]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP30]], <8 x float>* [[TMP34]], align 4
; AUTO_VEC-NEXT: [[TMP35:%.*]] = bitcast float* [[TMP24]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP31]], <8 x float>* [[TMP35]], align 4
; AUTO_VEC-NEXT: [[TMP36:%.*]] = bitcast float* [[TMP26]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP32]], <8 x float>* [[TMP36]], align 4
; AUTO_VEC-NEXT: [[TMP37:%.*]] = bitcast float* [[TMP28]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP33]], <8 x float>* [[TMP37]], align 4
; AUTO_VEC-NEXT: [[INDEX_NEXT_1]] = add nuw i64 [[INDEX]], 64
; AUTO_VEC-NEXT: [[VEC_IND_NEXT_1]] = fadd reassoc <8 x float> [[STEP_ADD3_1]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[NITER_NSUB_1]] = add i64 [[NITER]], -2
; AUTO_VEC-NEXT: [[NITER_NCMP_1:%.*]] = icmp eq i64 [[NITER_NSUB_1]], 0
; AUTO_VEC-NEXT: br i1 [[NITER_NCMP_1]], label [[MIDDLE_BLOCK_UNR_LCSSA]], label [[VECTOR_BODY]], !llvm.loop [[LOOP11:![0-9]+]]
; AUTO_VEC: middle.block.unr-lcssa:
; AUTO_VEC-NEXT: [[INDEX_UNR:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT_1]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[VEC_IND_UNR:%.*]] = phi <8 x float> [ <float 1.000000e+00, float 4.300000e+01, float 8.500000e+01, float 1.270000e+02, float 1.690000e+02, float 2.110000e+02, float 2.530000e+02, float 2.950000e+02>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT_1]], [[VECTOR_BODY]] ]
; AUTO_VEC-NEXT: [[LCMP_MOD_NOT:%.*]] = icmp eq i64 [[XTRAITER]], 0
; AUTO_VEC-NEXT: br i1 [[LCMP_MOD_NOT]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY_EPIL:%.*]]
; AUTO_VEC: vector.body.epil:
; AUTO_VEC-NEXT: [[STEP_ADD_EPIL:%.*]] = fadd reassoc <8 x float> [[VEC_IND_UNR]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD2_EPIL:%.*]] = fadd reassoc <8 x float> [[STEP_ADD_EPIL]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[STEP_ADD3_EPIL:%.*]] = fadd reassoc <8 x float> [[STEP_ADD2_EPIL]], <float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02, float 3.360000e+02>
; AUTO_VEC-NEXT: [[TMP38:%.*]] = getelementptr inbounds float, float* [[P]], i64 [[INDEX_UNR]]
; AUTO_VEC-NEXT: [[TMP39:%.*]] = bitcast float* [[TMP38]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD_EPIL:%.*]] = load <8 x float>, <8 x float>* [[TMP39]], align 4
; AUTO_VEC-NEXT: [[TMP40:%.*]] = getelementptr inbounds float, float* [[TMP38]], i64 8
; AUTO_VEC-NEXT: [[TMP41:%.*]] = bitcast float* [[TMP40]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD5_EPIL:%.*]] = load <8 x float>, <8 x float>* [[TMP41]], align 4
; AUTO_VEC-NEXT: [[TMP42:%.*]] = getelementptr inbounds float, float* [[TMP38]], i64 16
; AUTO_VEC-NEXT: [[TMP43:%.*]] = bitcast float* [[TMP42]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD6_EPIL:%.*]] = load <8 x float>, <8 x float>* [[TMP43]], align 4
; AUTO_VEC-NEXT: [[TMP44:%.*]] = getelementptr inbounds float, float* [[TMP38]], i64 24
; AUTO_VEC-NEXT: [[TMP45:%.*]] = bitcast float* [[TMP44]] to <8 x float>*
; AUTO_VEC-NEXT: [[WIDE_LOAD7_EPIL:%.*]] = load <8 x float>, <8 x float>* [[TMP45]], align 4
; AUTO_VEC-NEXT: [[TMP46:%.*]] = fadd reassoc <8 x float> [[VEC_IND_UNR]], [[WIDE_LOAD_EPIL]]
; AUTO_VEC-NEXT: [[TMP47:%.*]] = fadd reassoc <8 x float> [[STEP_ADD_EPIL]], [[WIDE_LOAD5_EPIL]]
; AUTO_VEC-NEXT: [[TMP48:%.*]] = fadd reassoc <8 x float> [[STEP_ADD2_EPIL]], [[WIDE_LOAD6_EPIL]]
; AUTO_VEC-NEXT: [[TMP49:%.*]] = fadd reassoc <8 x float> [[STEP_ADD3_EPIL]], [[WIDE_LOAD7_EPIL]]
; AUTO_VEC-NEXT: [[TMP50:%.*]] = bitcast float* [[TMP38]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP46]], <8 x float>* [[TMP50]], align 4
; AUTO_VEC-NEXT: [[TMP51:%.*]] = bitcast float* [[TMP40]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP47]], <8 x float>* [[TMP51]], align 4
; AUTO_VEC-NEXT: [[TMP52:%.*]] = bitcast float* [[TMP42]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP48]], <8 x float>* [[TMP52]], align 4
; AUTO_VEC-NEXT: [[TMP53:%.*]] = bitcast float* [[TMP44]] to <8 x float>*
; AUTO_VEC-NEXT: store <8 x float> [[TMP49]], <8 x float>* [[TMP53]], align 4
; AUTO_VEC-NEXT: br label [[MIDDLE_BLOCK]]
; AUTO_VEC: middle.block:
; AUTO_VEC-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[TMP0]]
; AUTO_VEC-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]]
; AUTO_VEC: for.cond.cleanup:
; AUTO_VEC-NEXT: ret void
; AUTO_VEC: for.body:
; AUTO_VEC-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ], [ [[N_VEC]], [[MIDDLE_BLOCK]] ]
; AUTO_VEC-NEXT: [[X_012:%.*]] = phi float [ [[ADD3:%.*]], [[FOR_BODY]] ], [ 1.000000e+00, [[FOR_BODY_PREHEADER]] ], [ [[IND_END]], [[MIDDLE_BLOCK]] ]
; AUTO_VEC-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[P]], i64 [[INDVARS_IV]]
; AUTO_VEC-NEXT: [[TMP54:%.*]] = load float, float* [[ARRAYIDX]], align 4
; AUTO_VEC-NEXT: [[ADD:%.*]] = fadd reassoc float [[X_012]], [[TMP54]]
; AUTO_VEC-NEXT: store float [[ADD]], float* [[ARRAYIDX]], align 4
; AUTO_VEC-NEXT: [[ADD3]] = fadd reassoc float [[X_012]], 4.200000e+01
; AUTO_VEC-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; AUTO_VEC-NEXT: [[CMP_NOT:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], [[TMP0]]
; AUTO_VEC-NEXT: br i1 [[CMP_NOT]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
;
entry:
%cmp.not11 = icmp eq i32 %N, 0
br i1 %cmp.not11, label %for.cond.cleanup, label %for.body.preheader
for.body.preheader:
%0 = zext i32 %N to i64
br label %for.body
for.cond.cleanup:
ret void
for.body:
%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
%x.012 = phi float [ 1.000000e+00, %for.body.preheader ], [ %add3, %for.body ]
%arrayidx = getelementptr inbounds float, float* %p, i64 %indvars.iv
%1 = load float, float* %arrayidx, align 4
%add = fadd reassoc float %x.012, %1
store float %add, float* %arrayidx, align 4
%add3 = fadd reassoc float %x.012, 4.200000e+01
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%cmp.not = icmp eq i64 %indvars.iv.next, %0
br i1 %cmp.not, label %for.cond.cleanup, label %for.body
}
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