a7874a52c9
We need to clean up the DAG floating-point undef logic. This process is similar to how we handled integer undef logic in D43141. And as we did there, I'm trying to reduce the patch by changing tests that would probably become meaningless once we make those fixes. llvm-svn: 332499
23 lines
890 B
LLVM
23 lines
890 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx512f | FileCheck %s
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define void @foo(<16 x float> %x) {
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; CHECK-LABEL: foo:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vaddps %zmm0, %zmm0, %zmm0
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; CHECK-NEXT: vinsertf128 $1, %xmm0, %ymm0, %ymm0
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; CHECK-NEXT: vinsertf64x4 $1, %ymm0, %zmm0, %zmm0
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; CHECK-NEXT: vmovups %zmm0, (%rax)
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; CHECK-NEXT: vzeroupper
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; CHECK-NEXT: retq
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%1 = fadd <16 x float> %x, %x
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%bc256 = bitcast <16 x float> %1 to <4 x i128>
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%2 = extractelement <4 x i128> %bc256, i32 0
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%3 = bitcast i128 %2 to <4 x float>
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%4 = shufflevector <4 x float> %3, <4 x float> undef, <16 x i32> <i32 0, i32
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1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3, i32 0,
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i32 1, i32 2, i32 3>
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store <16 x float> %4, <16 x float>* undef, align 4
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ret void
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}
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