e6ad9ef4e7
The basic idea to this is that a) having a single canonical type makes CSE easier, and b) many of our transforms are inconsistent about which types we end up with based on visit order. I'm restricting this to constants as for non-constants, we'd have to decide whether the simplicity was worth extra instructions. For constants, there are no extra instructions. We chose the canonical type as i64 arbitrarily. We might consider changing this to something else in the future if we have cause. Differential Revision: https://reviews.llvm.org/D115387
30 lines
1.5 KiB
LLVM
30 lines
1.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -slp-vectorizer -instcombine -S < %s | FileCheck %s
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; These conversions should be vectorized by reviews.llvm.org/D57059
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define dso_local <4 x float> @foo(<4 x i32> %0) {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: [[TMP2:%.*]] = extractelement <4 x i32> [[TMP0:%.*]], i64 1
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; CHECK-NEXT: [[TMP3:%.*]] = sitofp i32 [[TMP2]] to float
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; CHECK-NEXT: [[TMP4:%.*]] = insertelement <4 x float> undef, float [[TMP3]], i64 0
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; CHECK-NEXT: [[TMP5:%.*]] = shufflevector <4 x float> [[TMP4]], <4 x float> poison, <4 x i32> <i32 0, i32 0, i32 undef, i32 undef>
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; CHECK-NEXT: [[TMP6:%.*]] = shufflevector <4 x i32> [[TMP0]], <4 x i32> undef, <2 x i32> <i32 2, i32 3>
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; CHECK-NEXT: [[TMP7:%.*]] = sitofp <2 x i32> [[TMP6]] to <2 x float>
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; CHECK-NEXT: [[TMP8:%.*]] = shufflevector <2 x float> [[TMP7]], <2 x float> poison, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
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; CHECK-NEXT: [[TMP9:%.*]] = shufflevector <4 x float> [[TMP5]], <4 x float> [[TMP8]], <4 x i32> <i32 0, i32 1, i32 4, i32 5>
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; CHECK-NEXT: ret <4 x float> [[TMP9]]
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;
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%2 = extractelement <4 x i32> %0, i32 1
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%3 = sitofp i32 %2 to float
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%4 = insertelement <4 x float> undef, float %3, i32 0
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%5 = insertelement <4 x float> %4, float %3, i32 1
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%6 = extractelement <4 x i32> %0, i32 2
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%7 = sitofp i32 %6 to float
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%8 = insertelement <4 x float> %5, float %7, i32 2
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%9 = extractelement <4 x i32> %0, i32 3
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%10 = sitofp i32 %9 to float
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%11 = insertelement <4 x float> %8, float %10, i32 3
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ret <4 x float> %11
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}
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