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clang-p2996/llvm/test/Transforms/SLPVectorizer/X86/resched.ll
Juneyoung Lee 4a8e6ed2f7 [SLP,LV] Use poison constant vector for shufflevector/initial insertelement 
This patch makes SLP and LV emit operations with initial vectors set to poison constant instead of undef.
This is a part of efforts for using poison vector instead of undef to represent "doesn't care" vector.
The goal is to make nice shufflevector optimizations valid that is currently incorrect due to the tricky interaction between undef and poison (see https://bugs.llvm.org/show_bug.cgi?id=44185 ).

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D94061
2021-01-06 11:22:50 +09:00

173 lines
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -slp-vectorizer -S -mtriple=x86_64-unknown-linux-gnu -mcpu=bdver2 < %s | FileCheck %s
%"struct.std::array" = type { [32 x i8] }
; Function Attrs: nounwind uwtable
define fastcc void @_ZN12_GLOBAL__N_127PolynomialMultiplyRecognize9recognizeEv() unnamed_addr #0 align 2 {
; CHECK-LABEL: @_ZN12_GLOBAL__N_127PolynomialMultiplyRecognize9recognizeEv(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 undef, label [[IF_END50_I:%.*]], label [[IF_THEN22_I:%.*]]
; CHECK: if.then22.i:
; CHECK-NEXT: [[SUB_I:%.*]] = add nsw i32 undef, -1
; CHECK-NEXT: [[CONV31_I:%.*]] = and i32 undef, [[SUB_I]]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 0
; CHECK-NEXT: [[ARRAYIDX_I_I7_1_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 1
; CHECK-NEXT: [[ARRAYIDX_I_I7_2_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 2
; CHECK-NEXT: [[ARRAYIDX_I_I7_3_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 3
; CHECK-NEXT: [[ARRAYIDX_I_I7_4_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 4
; CHECK-NEXT: [[ARRAYIDX_I_I7_5_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 5
; CHECK-NEXT: [[ARRAYIDX_I_I7_6_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 6
; CHECK-NEXT: [[ARRAYIDX_I_I7_7_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 7
; CHECK-NEXT: [[TMP1:%.*]] = insertelement <8 x i32> poison, i32 [[CONV31_I]], i32 0
; CHECK-NEXT: [[TMP2:%.*]] = insertelement <8 x i32> [[TMP1]], i32 [[CONV31_I]], i32 1
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <8 x i32> [[TMP2]], i32 [[CONV31_I]], i32 2
; CHECK-NEXT: [[TMP4:%.*]] = insertelement <8 x i32> [[TMP3]], i32 [[CONV31_I]], i32 3
; CHECK-NEXT: [[TMP5:%.*]] = insertelement <8 x i32> [[TMP4]], i32 [[CONV31_I]], i32 4
; CHECK-NEXT: [[TMP6:%.*]] = insertelement <8 x i32> [[TMP5]], i32 [[CONV31_I]], i32 5
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <8 x i32> [[TMP6]], i32 [[CONV31_I]], i32 6
; CHECK-NEXT: [[TMP8:%.*]] = insertelement <8 x i32> [[TMP7]], i32 [[CONV31_I]], i32 7
; CHECK-NEXT: [[TMP9:%.*]] = lshr <8 x i32> [[TMP8]], <i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8>
; CHECK-NEXT: [[ARRAYIDX_I_I7_8_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 8
; CHECK-NEXT: [[ARRAYIDX_I_I7_9_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 9
; CHECK-NEXT: [[ARRAYIDX_I_I7_10_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 10
; CHECK-NEXT: [[ARRAYIDX_I_I7_11_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 11
; CHECK-NEXT: [[TMP10:%.*]] = insertelement <4 x i32> poison, i32 [[CONV31_I]], i32 0
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x i32> [[TMP10]], i32 [[CONV31_I]], i32 1
; CHECK-NEXT: [[TMP12:%.*]] = insertelement <4 x i32> [[TMP11]], i32 [[CONV31_I]], i32 2
; CHECK-NEXT: [[TMP13:%.*]] = insertelement <4 x i32> [[TMP12]], i32 [[CONV31_I]], i32 3
; CHECK-NEXT: [[TMP14:%.*]] = lshr <4 x i32> [[TMP13]], <i32 9, i32 10, i32 11, i32 12>
; CHECK-NEXT: [[ARRAYIDX_I_I7_12_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 12
; CHECK-NEXT: [[SHR_12_I_I:%.*]] = lshr i32 [[CONV31_I]], 13
; CHECK-NEXT: [[ARRAYIDX_I_I7_13_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 13
; CHECK-NEXT: [[SHR_13_I_I:%.*]] = lshr i32 [[CONV31_I]], 14
; CHECK-NEXT: [[ARRAYIDX_I_I7_14_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 14
; CHECK-NEXT: [[SHR_14_I_I:%.*]] = lshr i32 [[CONV31_I]], 15
; CHECK-NEXT: [[TMP15:%.*]] = insertelement <16 x i32> poison, i32 [[SUB_I]], i32 0
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <8 x i32> [[TMP9]], i32 0
; CHECK-NEXT: [[TMP17:%.*]] = insertelement <16 x i32> [[TMP15]], i32 [[TMP16]], i32 1
; CHECK-NEXT: [[TMP18:%.*]] = extractelement <8 x i32> [[TMP9]], i32 1
; CHECK-NEXT: [[TMP19:%.*]] = insertelement <16 x i32> [[TMP17]], i32 [[TMP18]], i32 2
; CHECK-NEXT: [[TMP20:%.*]] = extractelement <8 x i32> [[TMP9]], i32 2
; CHECK-NEXT: [[TMP21:%.*]] = insertelement <16 x i32> [[TMP19]], i32 [[TMP20]], i32 3
; CHECK-NEXT: [[TMP22:%.*]] = extractelement <8 x i32> [[TMP9]], i32 3
; CHECK-NEXT: [[TMP23:%.*]] = insertelement <16 x i32> [[TMP21]], i32 [[TMP22]], i32 4
; CHECK-NEXT: [[TMP24:%.*]] = extractelement <8 x i32> [[TMP9]], i32 4
; CHECK-NEXT: [[TMP25:%.*]] = insertelement <16 x i32> [[TMP23]], i32 [[TMP24]], i32 5
; CHECK-NEXT: [[TMP26:%.*]] = extractelement <8 x i32> [[TMP9]], i32 5
; CHECK-NEXT: [[TMP27:%.*]] = insertelement <16 x i32> [[TMP25]], i32 [[TMP26]], i32 6
; CHECK-NEXT: [[TMP28:%.*]] = extractelement <8 x i32> [[TMP9]], i32 6
; CHECK-NEXT: [[TMP29:%.*]] = insertelement <16 x i32> [[TMP27]], i32 [[TMP28]], i32 7
; CHECK-NEXT: [[TMP30:%.*]] = extractelement <8 x i32> [[TMP9]], i32 7
; CHECK-NEXT: [[TMP31:%.*]] = insertelement <16 x i32> [[TMP29]], i32 [[TMP30]], i32 8
; CHECK-NEXT: [[TMP32:%.*]] = extractelement <4 x i32> [[TMP14]], i32 0
; CHECK-NEXT: [[TMP33:%.*]] = insertelement <16 x i32> [[TMP31]], i32 [[TMP32]], i32 9
; CHECK-NEXT: [[TMP34:%.*]] = extractelement <4 x i32> [[TMP14]], i32 1
; CHECK-NEXT: [[TMP35:%.*]] = insertelement <16 x i32> [[TMP33]], i32 [[TMP34]], i32 10
; CHECK-NEXT: [[TMP36:%.*]] = extractelement <4 x i32> [[TMP14]], i32 2
; CHECK-NEXT: [[TMP37:%.*]] = insertelement <16 x i32> [[TMP35]], i32 [[TMP36]], i32 11
; CHECK-NEXT: [[TMP38:%.*]] = extractelement <4 x i32> [[TMP14]], i32 3
; CHECK-NEXT: [[TMP39:%.*]] = insertelement <16 x i32> [[TMP37]], i32 [[TMP38]], i32 12
; CHECK-NEXT: [[TMP40:%.*]] = insertelement <16 x i32> [[TMP39]], i32 [[SHR_12_I_I]], i32 13
; CHECK-NEXT: [[TMP41:%.*]] = insertelement <16 x i32> [[TMP40]], i32 [[SHR_13_I_I]], i32 14
; CHECK-NEXT: [[TMP42:%.*]] = insertelement <16 x i32> [[TMP41]], i32 [[SHR_14_I_I]], i32 15
; CHECK-NEXT: [[TMP43:%.*]] = trunc <16 x i32> [[TMP42]] to <16 x i8>
; CHECK-NEXT: [[TMP44:%.*]] = and <16 x i8> [[TMP43]], <i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1>
; CHECK-NEXT: [[ARRAYIDX_I_I7_15_I_I:%.*]] = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 15
; CHECK-NEXT: [[TMP45:%.*]] = bitcast i8* [[TMP0]] to <16 x i8>*
; CHECK-NEXT: store <16 x i8> [[TMP44]], <16 x i8>* [[TMP45]], align 1
; CHECK-NEXT: unreachable
; CHECK: if.end50.i:
; CHECK-NEXT: ret void
;
entry:
br i1 undef, label %if.end50.i, label %if.then22.i
if.then22.i: ; preds = %entry
%sub.i = add nsw i32 undef, -1
%conv31.i = and i32 undef, %sub.i
%0 = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 0
%1 = trunc i32 %sub.i to i8
%conv.i.i1199 = and i8 %1, 1
store i8 %conv.i.i1199, i8* %0, align 1
%shr.i.i = lshr i32 %conv31.i, 1
%2 = trunc i32 %shr.i.i to i8
%conv.1.i.i = and i8 %2, 1
%arrayidx.i.i7.1.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 1
store i8 %conv.1.i.i, i8* %arrayidx.i.i7.1.i.i, align 1
%shr.1.i.i = lshr i32 %conv31.i, 2
%3 = trunc i32 %shr.1.i.i to i8
%conv.2.i.i = and i8 %3, 1
%arrayidx.i.i7.2.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 2
store i8 %conv.2.i.i, i8* %arrayidx.i.i7.2.i.i, align 1
%shr.2.i.i = lshr i32 %conv31.i, 3
%4 = trunc i32 %shr.2.i.i to i8
%conv.3.i.i = and i8 %4, 1
%arrayidx.i.i7.3.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 3
store i8 %conv.3.i.i, i8* %arrayidx.i.i7.3.i.i, align 1
%shr.3.i.i = lshr i32 %conv31.i, 4
%5 = trunc i32 %shr.3.i.i to i8
%conv.4.i.i = and i8 %5, 1
%arrayidx.i.i7.4.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 4
store i8 %conv.4.i.i, i8* %arrayidx.i.i7.4.i.i, align 1
%shr.4.i.i = lshr i32 %conv31.i, 5
%6 = trunc i32 %shr.4.i.i to i8
%conv.5.i.i = and i8 %6, 1
%arrayidx.i.i7.5.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 5
store i8 %conv.5.i.i, i8* %arrayidx.i.i7.5.i.i, align 1
%shr.5.i.i = lshr i32 %conv31.i, 6
%7 = trunc i32 %shr.5.i.i to i8
%conv.6.i.i = and i8 %7, 1
%arrayidx.i.i7.6.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 6
store i8 %conv.6.i.i, i8* %arrayidx.i.i7.6.i.i, align 1
%shr.6.i.i = lshr i32 %conv31.i, 7
%8 = trunc i32 %shr.6.i.i to i8
%conv.7.i.i = and i8 %8, 1
%arrayidx.i.i7.7.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 7
store i8 %conv.7.i.i, i8* %arrayidx.i.i7.7.i.i, align 1
%shr.7.i.i = lshr i32 %conv31.i, 8
%9 = trunc i32 %shr.7.i.i to i8
%conv.8.i.i = and i8 %9, 1
%arrayidx.i.i7.8.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 8
store i8 %conv.8.i.i, i8* %arrayidx.i.i7.8.i.i, align 1
%shr.8.i.i = lshr i32 %conv31.i, 9
%10 = trunc i32 %shr.8.i.i to i8
%conv.9.i.i = and i8 %10, 1
%arrayidx.i.i7.9.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 9
store i8 %conv.9.i.i, i8* %arrayidx.i.i7.9.i.i, align 1
%shr.9.i.i = lshr i32 %conv31.i, 10
%11 = trunc i32 %shr.9.i.i to i8
%conv.10.i.i = and i8 %11, 1
%arrayidx.i.i7.10.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 10
store i8 %conv.10.i.i, i8* %arrayidx.i.i7.10.i.i, align 1
%shr.10.i.i = lshr i32 %conv31.i, 11
%12 = trunc i32 %shr.10.i.i to i8
%conv.11.i.i = and i8 %12, 1
%arrayidx.i.i7.11.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 11
store i8 %conv.11.i.i, i8* %arrayidx.i.i7.11.i.i, align 1
%shr.11.i.i = lshr i32 %conv31.i, 12
%13 = trunc i32 %shr.11.i.i to i8
%conv.12.i.i = and i8 %13, 1
%arrayidx.i.i7.12.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 12
store i8 %conv.12.i.i, i8* %arrayidx.i.i7.12.i.i, align 1
%shr.12.i.i = lshr i32 %conv31.i, 13
%14 = trunc i32 %shr.12.i.i to i8
%conv.13.i.i = and i8 %14, 1
%arrayidx.i.i7.13.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 13
store i8 %conv.13.i.i, i8* %arrayidx.i.i7.13.i.i, align 1
%shr.13.i.i = lshr i32 %conv31.i, 14
%15 = trunc i32 %shr.13.i.i to i8
%conv.14.i.i = and i8 %15, 1
%arrayidx.i.i7.14.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 14
store i8 %conv.14.i.i, i8* %arrayidx.i.i7.14.i.i, align 1
%shr.14.i.i = lshr i32 %conv31.i, 15
%16 = trunc i32 %shr.14.i.i to i8
%conv.15.i.i = and i8 %16, 1
%arrayidx.i.i7.15.i.i = getelementptr inbounds %"struct.std::array", %"struct.std::array"* undef, i64 0, i32 0, i64 15
store i8 %conv.15.i.i, i8* %arrayidx.i.i7.15.i.i, align 1
unreachable
if.end50.i: ; preds = %entry
ret void
}
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