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clang-p2996/llvm/test/Transforms/LoopVectorize/optimal-epilog-vectorization.ll
Florian Hahn cd61d4bd2f [LV] Do not LoopSimplify/LCSSA after generating main vector loop. 
At the moment LV runs LoopSimplify and reconstructs LCSSA form after
generating the main vector loop and before generating the epilogue
vector loop.

In practice, this adds a new exit block for the scalar loop because the
middle block now also branches to the original exit block of the scalar
loop. It also requires adding a new LCSSA phi in the newly created exit
block.

This complicates things when modeling exit values in VPlan, because we
would need to update the VPlan for the epilogue loop to update the newly
created LCSSA phi node.

But none of that should be necessary, as all analysis requiring
loop-simplify form is already done at this point and LCSSA form of the
original loop is not broken.

Reviewed By: bmahjour

Differential Revision: https://reviews.llvm.org/D125810
2022-05-20 09:58:40 +01:00

616 lines
42 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; To test epilogue-vectorization we need to make sure that the vectorizer actually vectorizes the loop.
; Without a target triple this becomes difficult, unless we force vectorization through user hints.
; Currently user provided vectorization hints prevent epilogue vectorization unless the forced
; VF is the same as the epilogue vectorization VF. To make these tests target independent we'll use a
; trick where both VFs are forced to be the same value. Mismatching VFs are tested in target specific tests.
; RUN: opt -passes='loop-vectorize' -force-vector-width=4 -enable-epilogue-vectorization -epilogue-vectorization-force-VF=4 -S %s | FileCheck %s
; Some simpler cases are found profitable even without triple or user hints.
; RUN: opt -passes='loop-vectorize' -enable-epilogue-vectorization -epilogue-vectorization-force-VF=2 -S %s | FileCheck --check-prefix=CHECK-PROFITABLE-BY-DEFAULT %s
target datalayout = "e-m:e-i64:64-n32:64-v128:128:128"
define dso_local void @f1(float* noalias %aa, float* noalias %bb, float* noalias %cc, i32 signext %N) {
; CHECK-LABEL: @f1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[CMP1]], label [[ITER_CHECK:%.*]], label [[FOR_END:%.*]]
; CHECK: iter.check:
; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK: vector.main.loop.iter.check:
; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds float, float* [[BB:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, float* [[TMP1]], i32 0
; CHECK-NEXT: [[TMP3:%.*]] = bitcast float* [[TMP2]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP3]], align 4
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds float, float* [[CC:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds float, float* [[TMP4]], i32 0
; CHECK-NEXT: [[TMP6:%.*]] = bitcast float* [[TMP5]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <4 x float>, <4 x float>* [[TMP6]], align 4
; CHECK-NEXT: [[TMP7:%.*]] = fadd fast <4 x float> [[WIDE_LOAD]], [[WIDE_LOAD2]]
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds float, float* [[AA:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds float, float* [[TMP8]], i32 0
; CHECK-NEXT: [[TMP10:%.*]] = bitcast float* [[TMP9]] to <4 x float>*
; CHECK-NEXT: store <4 x float> [[TMP7]], <4 x float>* [[TMP10]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK: vec.epilog.iter.check:
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK: vec.epilog.ph:
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-NEXT: [[N_MOD_VF3:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-NEXT: [[N_VEC4:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF3]]
; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK: vec.epilog.vector.body:
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT9:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP12:%.*]] = add i64 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds float, float* [[BB]], i64 [[TMP12]]
; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds float, float* [[TMP13]], i32 0
; CHECK-NEXT: [[TMP15:%.*]] = bitcast float* [[TMP14]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD7:%.*]] = load <4 x float>, <4 x float>* [[TMP15]], align 4
; CHECK-NEXT: [[TMP16:%.*]] = getelementptr inbounds float, float* [[CC]], i64 [[TMP12]]
; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds float, float* [[TMP16]], i32 0
; CHECK-NEXT: [[TMP18:%.*]] = bitcast float* [[TMP17]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD8:%.*]] = load <4 x float>, <4 x float>* [[TMP18]], align 4
; CHECK-NEXT: [[TMP19:%.*]] = fadd fast <4 x float> [[WIDE_LOAD7]], [[WIDE_LOAD8]]
; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds float, float* [[AA]], i64 [[TMP12]]
; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds float, float* [[TMP20]], i32 0
; CHECK-NEXT: [[TMP22:%.*]] = bitcast float* [[TMP21]] to <4 x float>*
; CHECK-NEXT: store <4 x float> [[TMP19]], <4 x float>* [[TMP22]], align 4
; CHECK-NEXT: [[INDEX_NEXT9]] = add nuw i64 [[OFFSET_IDX]], 4
; CHECK-NEXT: [[TMP23:%.*]] = icmp eq i64 [[INDEX_NEXT9]], [[N_VEC4]]
; CHECK-NEXT: br i1 [[TMP23]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]]
; CHECK: vec.epilog.middle.block:
; CHECK-NEXT: [[CMP_N5:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC4]]
; CHECK-NEXT: br i1 [[CMP_N5]], label [[FOR_END_LOOPEXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK: vec.epilog.scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC4]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[BB]], i64 [[INDVARS_IV]]
; CHECK-NEXT: [[TMP24:%.*]] = load float, float* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[CC]], i64 [[INDVARS_IV]]
; CHECK-NEXT: [[TMP25:%.*]] = load float, float* [[ARRAYIDX2]], align 4
; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[TMP24]], [[TMP25]]
; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds float, float* [[AA]], i64 [[INDVARS_IV]]
; CHECK-NEXT: store float [[ADD]], float* [[ARRAYIDX4]], align 4
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: for.end.loopexit:
; CHECK-NEXT: br label [[FOR_END]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @f1(
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: entry:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 0
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: for.body.preheader:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_BODY:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: for.body:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[BB:%.*]], i64 [[INDVARS_IV]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = load float, float* [[ARRAYIDX]], align 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[CC:%.*]], i64 [[INDVARS_IV]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = load float, float* [[ARRAYIDX2]], align 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ADD:%.*]] = fadd fast float [[TMP0]], [[TMP1]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds float, float* [[AA:%.*]], i64 [[INDVARS_IV]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store float [[ADD]], float* [[ARRAYIDX4]], align 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END]]
; CHECK-PROFITABLE-BY-DEFAULT: for.end:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: ret void
;
entry:
%cmp1 = icmp sgt i32 %N, 0
br i1 %cmp1, label %for.body.preheader, label %for.end
for.body.preheader: ; preds = %entry
%wide.trip.count = zext i32 %N to i64
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds float, float* %bb, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float, float* %cc, i64 %indvars.iv
%1 = load float, float* %arrayidx2, align 4
%add = fadd fast float %0, %1
%arrayidx4 = getelementptr inbounds float, float* %aa, i64 %indvars.iv
store float %add, float* %arrayidx4, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
define dso_local signext i32 @f2(float* noalias %A, float* noalias %B, i32 signext %n) {
; CHECK-LABEL: @f2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 1
; CHECK-NEXT: br i1 [[CMP1]], label [[ITER_CHECK:%.*]], label [[FOR_END:%.*]]
; CHECK: iter.check:
; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1
; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[TMP0]] to i64
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]]
; CHECK: vector.scevcheck:
; CHECK-NEXT: [[TMP1:%.*]] = add nsw i64 [[WIDE_TRIP_COUNT]], -1
; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[TMP1]] to i32
; CHECK-NEXT: [[MUL:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 1, i32 [[TMP2]])
; CHECK-NEXT: [[MUL_RESULT:%.*]] = extractvalue { i32, i1 } [[MUL]], 0
; CHECK-NEXT: [[MUL_OVERFLOW:%.*]] = extractvalue { i32, i1 } [[MUL]], 1
; CHECK-NEXT: [[TMP3:%.*]] = sub i32 [[TMP0]], [[MUL_RESULT]]
; CHECK-NEXT: [[TMP4:%.*]] = icmp sgt i32 [[TMP3]], [[TMP0]]
; CHECK-NEXT: [[TMP5:%.*]] = or i1 [[TMP4]], [[MUL_OVERFLOW]]
; CHECK-NEXT: [[TMP6:%.*]] = icmp ugt i64 [[TMP1]], 4294967295
; CHECK-NEXT: [[TMP7:%.*]] = or i1 [[TMP5]], [[TMP6]]
; CHECK-NEXT: br i1 [[TMP7]], label [[VEC_EPILOG_SCALAR_PH]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK: vector.main.loop.iter.check:
; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = trunc i64 [[INDEX]] to i32
; CHECK-NEXT: [[TMP8:%.*]] = add i32 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP9:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP10:%.*]] = xor i32 [[TMP8]], -1
; CHECK-NEXT: [[TMP11:%.*]] = add i32 [[TMP10]], [[N]]
; CHECK-NEXT: [[TMP12:%.*]] = sext i32 [[TMP11]] to i64
; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds float, float* [[B:%.*]], i64 [[TMP12]]
; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds float, float* [[TMP13]], i32 0
; CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds float, float* [[TMP14]], i32 -3
; CHECK-NEXT: [[TMP16:%.*]] = bitcast float* [[TMP15]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP16]], align 4
; CHECK-NEXT: [[REVERSE:%.*]] = shufflevector <4 x float> [[WIDE_LOAD]], <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
; CHECK-NEXT: [[TMP17:%.*]] = fadd fast <4 x float> [[REVERSE]], <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00>
; CHECK-NEXT: [[TMP18:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[TMP9]]
; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds float, float* [[TMP18]], i32 0
; CHECK-NEXT: [[TMP20:%.*]] = bitcast float* [[TMP19]] to <4 x float>*
; CHECK-NEXT: store <4 x float> [[TMP17]], <4 x float>* [[TMP20]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP21:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP21]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK: vec.epilog.iter.check:
; CHECK-NEXT: [[IND_END5:%.*]] = trunc i64 [[N_VEC]] to i32
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK: vec.epilog.ph:
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-NEXT: [[N_VEC3:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF2]]
; CHECK-NEXT: [[IND_END:%.*]] = trunc i64 [[N_VEC3]] to i32
; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK: vec.epilog.vector.body:
; CHECK-NEXT: [[OFFSET_IDX9:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT12:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[OFFSET_IDX8:%.*]] = trunc i64 [[OFFSET_IDX9]] to i32
; CHECK-NEXT: [[TMP22:%.*]] = add i32 [[OFFSET_IDX8]], 0
; CHECK-NEXT: [[TMP23:%.*]] = add i64 [[OFFSET_IDX9]], 0
; CHECK-NEXT: [[TMP24:%.*]] = xor i32 [[TMP22]], -1
; CHECK-NEXT: [[TMP25:%.*]] = add i32 [[TMP24]], [[N]]
; CHECK-NEXT: [[TMP26:%.*]] = sext i32 [[TMP25]] to i64
; CHECK-NEXT: [[TMP27:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[TMP26]]
; CHECK-NEXT: [[TMP28:%.*]] = getelementptr inbounds float, float* [[TMP27]], i32 0
; CHECK-NEXT: [[TMP29:%.*]] = getelementptr inbounds float, float* [[TMP28]], i32 -3
; CHECK-NEXT: [[TMP30:%.*]] = bitcast float* [[TMP29]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD10:%.*]] = load <4 x float>, <4 x float>* [[TMP30]], align 4
; CHECK-NEXT: [[REVERSE11:%.*]] = shufflevector <4 x float> [[WIDE_LOAD10]], <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
; CHECK-NEXT: [[TMP31:%.*]] = fadd fast <4 x float> [[REVERSE11]], <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00>
; CHECK-NEXT: [[TMP32:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[TMP23]]
; CHECK-NEXT: [[TMP33:%.*]] = getelementptr inbounds float, float* [[TMP32]], i32 0
; CHECK-NEXT: [[TMP34:%.*]] = bitcast float* [[TMP33]] to <4 x float>*
; CHECK-NEXT: store <4 x float> [[TMP31]], <4 x float>* [[TMP34]], align 4
; CHECK-NEXT: [[INDEX_NEXT12]] = add nuw i64 [[OFFSET_IDX9]], 4
; CHECK-NEXT: [[TMP35:%.*]] = icmp eq i64 [[INDEX_NEXT12]], [[N_VEC3]]
; CHECK-NEXT: br i1 [[TMP35]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: vec.epilog.middle.block:
; CHECK-NEXT: [[CMP_N6:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC3]]
; CHECK-NEXT: br i1 [[CMP_N6]], label [[FOR_END_LOOPEXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK: vec.epilog.scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ITER_CHECK]] ]
; CHECK-NEXT: [[BC_RESUME_VAL4:%.*]] = phi i32 [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END5]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ITER_CHECK]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[I_014:%.*]] = phi i32 [ [[BC_RESUME_VAL4]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[TMP36:%.*]] = xor i32 [[I_014]], -1
; CHECK-NEXT: [[SUB2:%.*]] = add i32 [[TMP36]], [[N]]
; CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[SUB2]] to i64
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[IDXPROM]]
; CHECK-NEXT: [[TMP37:%.*]] = load float, float* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[CONV3:%.*]] = fadd fast float [[TMP37]], 1.000000e+00
; CHECK-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]]
; CHECK-NEXT: store float [[CONV3]], float* [[ARRAYIDX5]], align 4
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_014]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: for.end.loopexit:
; CHECK-NEXT: br label [[FOR_END]]
; CHECK: for.end:
; CHECK-NEXT: ret i32 0
;
; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @f2(
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: entry:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: for.body.preheader:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[TMP0]] to i64
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_BODY:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: for.body:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[I_014:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = xor i32 [[I_014]], -1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[SUB2:%.*]] = add i32 [[TMP1]], [[N]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IDXPROM:%.*]] = sext i32 [[SUB2]] to i64
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B:%.*]], i64 [[IDXPROM]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP2:%.*]] = load float, float* [[ARRAYIDX]], align 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CONV3:%.*]] = fadd fast float [[TMP2]], 1.000000e+00
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDVARS_IV]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store float [[CONV3]], float* [[ARRAYIDX5]], align 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INC]] = add nuw nsw i32 [[I_014]], 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END]]
; CHECK-PROFITABLE-BY-DEFAULT: for.end:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: ret i32 0
;
entry:
%cmp1 = icmp sgt i32 %n, 1
br i1 %cmp1, label %for.body.preheader, label %for.end
for.body.preheader: ; preds = %entry
%0 = add i32 %n, -1
%wide.trip.count = zext i32 %0 to i64
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
%i.014 = phi i32 [ 0, %for.body.preheader ], [ %inc, %for.body ]
%1 = xor i32 %i.014, -1
%sub2 = add i32 %1, %n
%idxprom = sext i32 %sub2 to i64
%arrayidx = getelementptr inbounds float, float* %B, i64 %idxprom
%2 = load float, float* %arrayidx, align 4
%conv3 = fadd fast float %2, 1.000000e+00
%arrayidx5 = getelementptr inbounds float, float* %A, i64 %indvars.iv
store float %conv3, float* %arrayidx5, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%inc = add nuw nsw i32 %i.014, 1
%exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret i32 0
}
define void @f3(i8* noalias %A, i64 %n) {
; CHECK-LABEL: @f3(
; CHECK-NEXT: iter.check:
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK: vector.main.loop.iter.check:
; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[N]], 4
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 4
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[A:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, i8* [[TMP1]], i32 0
; CHECK-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP2]] to <4 x i8>*
; CHECK-NEXT: store <4 x i8> <i8 1, i8 1, i8 1, i8 1>, <4 x i8>* [[TMP3]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK: vec.epilog.iter.check:
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[N]], [[N_VEC]]
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK: vec.epilog.ph:
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[N]], 4
; CHECK-NEXT: [[N_VEC3:%.*]] = sub i64 [[N]], [[N_MOD_VF2]]
; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK: vec.epilog.vector.body:
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT6:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP5:%.*]] = add i64 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[TMP5]]
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, i8* [[TMP6]], i32 0
; CHECK-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to <4 x i8>*
; CHECK-NEXT: store <4 x i8> <i8 1, i8 1, i8 1, i8 1>, <4 x i8>* [[TMP8]], align 1
; CHECK-NEXT: [[INDEX_NEXT6]] = add nuw i64 [[OFFSET_IDX]], 4
; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT6]], [[N_VEC3]]
; CHECK-NEXT: br i1 [[TMP9]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK: vec.epilog.middle.block:
; CHECK-NEXT: [[CMP_N4:%.*]] = icmp eq i64 [[N]], [[N_VEC3]]
; CHECK-NEXT: br i1 [[CMP_N4]], label [[FOR_END_LOOPEXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK: vec.epilog.scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[IV]]
; CHECK-NEXT: store i8 1, i8* [[ARRAYIDX]], align 1
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK: for.end.loopexit:
; CHECK-NEXT: br label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @f3(
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: iter.check:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 2
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: vector.main.loop.iter.check:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[N]], 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: vector.ph:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: vector.body:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[A:%.*]], i64 [[TMP0]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, i8* [[TMP1]], i32 0
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP2]] to <4 x i8>*
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store <4 x i8> <i8 1, i8 1, i8 1, i8 1>, <4 x i8>* [[TMP3]], align 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-PROFITABLE-BY-DEFAULT: middle.block:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.iter.check:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[N]], [[N_VEC]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 2
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.ph:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[N]], 2
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_VEC3:%.*]] = sub i64 [[N]], [[N_MOD_VF2]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.vector.body:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[OFFSET_IDX:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT6:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP5:%.*]] = add i64 [[OFFSET_IDX]], 0
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[TMP5]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, i8* [[TMP6]], i32 0
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to <2 x i8>*
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store <2 x i8> <i8 1, i8 1>, <2 x i8>* [[TMP8]], align 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX_NEXT6]] = add nuw i64 [[OFFSET_IDX]], 2
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT6]], [[N_VEC3]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[TMP9]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]]
; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.middle.block:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP_N4:%.*]] = icmp eq i64 [[N]], [[N_VEC3]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP_N4]], label [[FOR_END_LOOPEXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.scalar.ph:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_BODY:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: for.body:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[IV]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store i8 1, i8* [[ARRAYIDX]], align 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], [[N]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: for.end:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%arrayidx = getelementptr inbounds i8, i8* %A, i64 %iv
store i8 1, i8* %arrayidx, align 1
%iv.next = add nuw nsw i64 %iv, 1
%exitcond = icmp ne i64 %iv.next, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
; Test case for PR54745.
define void @induction_resume_value_requires_non_trivial_scev_expansion(i8* %dst) {
; CHECK-LABEL: @induction_resume_value_requires_non_trivial_scev_expansion(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
; CHECK: outer.header:
; CHECK-NEXT: [[INDUCTION_IV:%.*]] = phi i8 [ [[INDUCTION_IV_NEXT:%.*]], [[OUTER_LATCH:%.*]] ], [ -56, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[INDVAR:%.*]] = phi i8 [ [[INDVAR_NEXT:%.*]], [[OUTER_LATCH]] ], [ 0, [[ENTRY]] ]
; CHECK-NEXT: [[OUTER_IV:%.*]] = phi i64 [ 2, [[ENTRY]] ], [ [[OUTER_IV_NEXT:%.*]], [[OUTER_LATCH]] ]
; CHECK-NEXT: [[P2:%.*]] = phi i32 [ -202, [[ENTRY]] ], [ [[ADD:%.*]], [[OUTER_LATCH]] ]
; CHECK-NEXT: [[TMP0:%.*]] = mul i8 [[INDVAR]], -1
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[TMP0]], -3
; CHECK-NEXT: [[TRUNC_IV:%.*]] = trunc i64 [[OUTER_IV]] to i32
; CHECK-NEXT: [[ADD]] = add i32 [[P2]], [[TRUNC_IV]]
; CHECK-NEXT: [[TRUNC_ADD:%.*]] = trunc i32 [[ADD]] to i8
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[IND_END:%.*]] = mul i8 84, [[INDUCTION_IV]]
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <4 x i8> poison, i8 [[INDUCTION_IV]], i32 0
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <4 x i8> [[DOTSPLATINSERT]], <4 x i8> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[TMP2:%.*]] = mul <4 x i8> <i8 0, i8 1, i8 2, i8 3>, [[DOTSPLAT]]
; CHECK-NEXT: [[INDUCTION:%.*]] = add <4 x i8> zeroinitializer, [[TMP2]]
; CHECK-NEXT: [[TMP3:%.*]] = mul i8 [[INDUCTION_IV]], 4
; CHECK-NEXT: [[DOTSPLATINSERT2:%.*]] = insertelement <4 x i8> poison, i8 [[TMP3]], i32 0
; CHECK-NEXT: [[DOTSPLAT3:%.*]] = shufflevector <4 x i8> [[DOTSPLATINSERT2]], <4 x i8> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i8> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 1, [[INDEX]]
; CHECK-NEXT: [[TMP4:%.*]] = add i64 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i8, i8* [[DST:%.*]], i64 [[TMP4]]
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, i8* [[TMP5]], i32 0
; CHECK-NEXT: [[TMP7:%.*]] = bitcast i8* [[TMP6]] to <4 x i8>*
; CHECK-NEXT: store <4 x i8> [[VEC_IND]], <4 x i8>* [[TMP7]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i8> [[VEC_IND]], [[DOTSPLAT3]]
; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], 84
; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP11:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 84, 84
; CHECK-NEXT: br i1 [[CMP_N]], label [[OUTER_LATCH]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 85, [[MIDDLE_BLOCK]] ], [ 1, [[OUTER_HEADER]] ]
; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i8 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 0, [[OUTER_HEADER]] ]
; CHECK-NEXT: br label [[INNER:%.*]]
; CHECK: inner:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[INNER]] ]
; CHECK-NEXT: [[IV_2:%.*]] = phi i8 [ [[BC_RESUME_VAL1]], [[SCALAR_PH]] ], [ [[IV_2_NEXT:%.*]], [[INNER]] ]
; CHECK-NEXT: [[IV_2_NEXT]] = sub i8 [[IV_2]], [[TRUNC_ADD]]
; CHECK-NEXT: [[GEP_DST:%.*]] = getelementptr inbounds i8, i8* [[DST]], i64 [[IV]]
; CHECK-NEXT: store i8 [[IV_2]], i8* [[GEP_DST]], align 1
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EC:%.*]] = icmp ugt i64 [[IV]], 83
; CHECK-NEXT: br i1 [[EC]], label [[OUTER_LATCH]], label [[INNER]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK: outer.latch:
; CHECK-NEXT: [[OUTER_IV_NEXT]] = add nuw nsw i64 [[OUTER_IV]], 1
; CHECK-NEXT: [[INDVAR_NEXT]] = add i8 [[INDVAR]], 1
; CHECK-NEXT: [[INDUCTION_IV_NEXT]] = add i8 [[INDUCTION_IV]], [[TMP1]]
; CHECK-NEXT: br label [[OUTER_HEADER]]
;
; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @induction_resume_value_requires_non_trivial_scev_expansion(
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: entry:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[OUTER_HEADER:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: outer.header:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDUCTION_IV:%.*]] = phi i8 [ [[INDUCTION_IV_NEXT:%.*]], [[OUTER_LATCH:%.*]] ], [ -56, [[ENTRY:%.*]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVAR:%.*]] = phi i8 [ [[INDVAR_NEXT:%.*]], [[OUTER_LATCH]] ], [ 0, [[ENTRY]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[OUTER_IV:%.*]] = phi i64 [ 2, [[ENTRY]] ], [ [[OUTER_IV_NEXT:%.*]], [[OUTER_LATCH]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[P2:%.*]] = phi i32 [ -202, [[ENTRY]] ], [ [[ADD:%.*]], [[OUTER_LATCH]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = mul i8 [[INDVAR]], -1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = add i8 [[TMP0]], -3
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TRUNC_IV:%.*]] = trunc i64 [[OUTER_IV]] to i32
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ADD]] = add i32 [[P2]], [[TRUNC_IV]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TRUNC_ADD:%.*]] = trunc i32 [[ADD]] to i8
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: vector.ph:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IND_END:%.*]] = mul i8 84, [[INDUCTION_IV]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <4 x i8> poison, i8 [[INDUCTION_IV]], i32 0
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[DOTSPLAT:%.*]] = shufflevector <4 x i8> [[DOTSPLATINSERT]], <4 x i8> poison, <4 x i32> zeroinitializer
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP2:%.*]] = mul <4 x i8> <i8 0, i8 1, i8 2, i8 3>, [[DOTSPLAT]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDUCTION:%.*]] = add <4 x i8> zeroinitializer, [[TMP2]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP3:%.*]] = mul i8 [[INDUCTION_IV]], 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[DOTSPLATINSERT2:%.*]] = insertelement <4 x i8> poison, i8 [[TMP3]], i32 0
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[DOTSPLAT3:%.*]] = shufflevector <4 x i8> [[DOTSPLATINSERT2]], <4 x i8> poison, <4 x i32> zeroinitializer
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: vector.body:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[VEC_IND:%.*]] = phi <4 x i8> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[OFFSET_IDX:%.*]] = add i64 1, [[INDEX]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP4:%.*]] = add i64 [[OFFSET_IDX]], 0
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP5:%.*]] = getelementptr inbounds i8, i8* [[DST:%.*]], i64 [[TMP4]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, i8* [[TMP5]], i32 0
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP7:%.*]] = bitcast i8* [[TMP6]] to <4 x i8>*
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store <4 x i8> [[VEC_IND]], <4 x i8>* [[TMP7]], align 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[VEC_IND_NEXT]] = add <4 x i8> [[VEC_IND]], [[DOTSPLAT3]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], 84
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK-PROFITABLE-BY-DEFAULT: middle.block:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP_N:%.*]] = icmp eq i64 84, 84
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP_N]], label [[OUTER_LATCH]], label [[SCALAR_PH]]
; CHECK-PROFITABLE-BY-DEFAULT: scalar.ph:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 85, [[MIDDLE_BLOCK]] ], [ 1, [[OUTER_HEADER]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[BC_RESUME_VAL1:%.*]] = phi i8 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 0, [[OUTER_HEADER]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[INNER:%.*]]
; CHECK-PROFITABLE-BY-DEFAULT: inner:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[INNER]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV_2:%.*]] = phi i8 [ [[BC_RESUME_VAL1]], [[SCALAR_PH]] ], [ [[IV_2_NEXT:%.*]], [[INNER]] ]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV_2_NEXT]] = sub i8 [[IV_2]], [[TRUNC_ADD]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[GEP_DST:%.*]] = getelementptr inbounds i8, i8* [[DST]], i64 [[IV]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store i8 [[IV_2]], i8* [[GEP_DST]], align 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EC:%.*]] = icmp ugt i64 [[IV]], 83
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EC]], label [[OUTER_LATCH]], label [[INNER]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK-PROFITABLE-BY-DEFAULT: outer.latch:
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[OUTER_IV_NEXT]] = add nuw nsw i64 [[OUTER_IV]], 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVAR_NEXT]] = add i8 [[INDVAR]], 1
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDUCTION_IV_NEXT]] = add i8 [[INDUCTION_IV]], [[TMP1]]
; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[OUTER_HEADER]]
;
entry:
br label %outer.header
outer.header:
%outer.iv = phi i64 [ 2, %entry ], [ %outer.iv.next, %outer.latch ]
%p2 = phi i32 [ -202, %entry ], [ %add, %outer.latch ]
%trunc.iv = trunc i64 %outer.iv to i32
%add = add i32 %p2, %trunc.iv
%trunc.add = trunc i32 %add to i8
br label %inner
inner:
%iv = phi i64 [ 1, %outer.header ], [ %iv.next, %inner ]
%iv.2 = phi i8 [ 0, %outer.header ], [ %iv.2.next, %inner ]
%iv.2.next = sub i8 %iv.2, %trunc.add
%gep.dst = getelementptr inbounds i8, i8* %dst, i64 %iv
store i8 %iv.2, i8* %gep.dst
%iv.next = add nuw nsw i64 %iv, 1
%ec = icmp ugt i64 %iv, 83
br i1 %ec, label %outer.latch, label %inner
outer.latch:
%outer.iv.next = add nuw nsw i64 %outer.iv, 1
br label %outer.header
}
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