4a8e6ed2f7
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
80 lines
3.6 KiB
LLVM
80 lines
3.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -basic-aa -slp-vectorizer -dce -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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define void @fextr(double* %ptr) {
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; CHECK-LABEL: @fextr(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[LD:%.*]] = load <2 x double>, <2 x double>* undef, align 16
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; CHECK-NEXT: [[P0:%.*]] = getelementptr inbounds double, double* [[PTR:%.*]], i64 0
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; CHECK-NEXT: [[TMP0:%.*]] = fadd <2 x double> [[LD]], <double 0.000000e+00, double 1.100000e+00>
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast double* [[P0]] to <2 x double>*
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; CHECK-NEXT: store <2 x double> [[TMP0]], <2 x double>* [[TMP1]], align 4
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; CHECK-NEXT: ret void
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;
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entry:
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%LD = load <2 x double>, <2 x double>* undef
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%V0 = extractelement <2 x double> %LD, i32 0
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%V1 = extractelement <2 x double> %LD, i32 1
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%P0 = getelementptr inbounds double, double* %ptr, i64 0
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%P1 = getelementptr inbounds double, double* %ptr, i64 1
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%A0 = fadd double %V0, 0.0
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%A1 = fadd double %V1, 1.1
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store double %A0, double* %P0, align 4
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store double %A1, double* %P1, align 4
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ret void
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}
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define void @fextr1(double* %ptr) {
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; CHECK-LABEL: @fextr1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[LD:%.*]] = load <2 x double>, <2 x double>* undef, align 16
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; CHECK-NEXT: [[SHUFFLE:%.*]] = shufflevector <2 x double> [[LD]], <2 x double> poison, <2 x i32> <i32 1, i32 0>
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; CHECK-NEXT: [[P1:%.*]] = getelementptr inbounds double, double* [[PTR:%.*]], i64 0
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; CHECK-NEXT: [[TMP0:%.*]] = fadd <2 x double> [[SHUFFLE]], <double 3.400000e+00, double 1.200000e+00>
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast double* [[P1]] to <2 x double>*
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; CHECK-NEXT: store <2 x double> [[TMP0]], <2 x double>* [[TMP1]], align 4
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; CHECK-NEXT: ret void
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;
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entry:
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%LD = load <2 x double>, <2 x double>* undef
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%V0 = extractelement <2 x double> %LD, i32 0
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%V1 = extractelement <2 x double> %LD, i32 1
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%P0 = getelementptr inbounds double, double* %ptr, i64 1 ; <--- incorrect order
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%P1 = getelementptr inbounds double, double* %ptr, i64 0
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%A0 = fadd double %V0, 1.2
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%A1 = fadd double %V1, 3.4
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store double %A0, double* %P0, align 4
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store double %A1, double* %P1, align 4
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ret void
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}
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define void @fextr2(double* %ptr) {
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; CHECK-LABEL: @fextr2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[LD:%.*]] = load <4 x double>, <4 x double>* undef, align 32
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; CHECK-NEXT: [[V0:%.*]] = extractelement <4 x double> [[LD]], i32 0
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; CHECK-NEXT: [[V1:%.*]] = extractelement <4 x double> [[LD]], i32 1
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; CHECK-NEXT: [[P0:%.*]] = getelementptr inbounds double, double* [[PTR:%.*]], i64 0
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; CHECK-NEXT: [[TMP0:%.*]] = insertelement <2 x double> poison, double [[V0]], i32 0
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; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x double> [[TMP0]], double [[V1]], i32 1
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; CHECK-NEXT: [[TMP2:%.*]] = fadd <2 x double> [[TMP1]], <double 5.500000e+00, double 6.600000e+00>
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast double* [[P0]] to <2 x double>*
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; CHECK-NEXT: store <2 x double> [[TMP2]], <2 x double>* [[TMP3]], align 4
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; CHECK-NEXT: ret void
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;
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entry:
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%LD = load <4 x double>, <4 x double>* undef
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%V0 = extractelement <4 x double> %LD, i32 0 ; <--- invalid size.
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%V1 = extractelement <4 x double> %LD, i32 1
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%P0 = getelementptr inbounds double, double* %ptr, i64 0
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%P1 = getelementptr inbounds double, double* %ptr, i64 1
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%A0 = fadd double %V0, 5.5
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%A1 = fadd double %V1, 6.6
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store double %A0, double* %P0, align 4
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store double %A1, double* %P1, align 4
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ret void
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}
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