5767497943
There are some cases where its useful for float types, not quite as hot as in the integer case, but still better than alternatives. Differential Revision: https://reviews.llvm.org/D143785
34 lines
1.3 KiB
LLVM
34 lines
1.3 KiB
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=avx | FileCheck %s
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@v2_0 = dso_local global <2 x i32> zeroinitializer, align 8
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define dso_local void @test() {
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; CHECK-LABEL: test:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset %rbp, -16
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; CHECK-NEXT: movq %rsp, %rbp
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; CHECK-NEXT: .cfi_def_cfa_register %rbp
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; CHECK-NEXT: andq $-32, %rsp
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; CHECK-NEXT: subq $64, %rsp
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; CHECK-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
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; CHECK-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
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; CHECK-NEXT: vshufps {{.*#+}} xmm2 = xmm1[1,0],xmm0[1,0]
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; CHECK-NEXT: vshufps {{.*#+}} xmm0 = xmm2[2,0],xmm0[0,0]
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; CHECK-NEXT: vinsertf128 $1, %xmm1, %ymm0, %ymm0
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; CHECK-NEXT: vmovaps %ymm0, (%rsp)
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; CHECK-NEXT: movq %rbp, %rsp
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .cfi_def_cfa %rsp, 8
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; CHECK-NEXT: vzeroupper
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; CHECK-NEXT: retq
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entry:
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%v8_0 = alloca <8 x i32>, align 32
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%0 = load <2 x i32>, ptr @v2_0, align 8
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%shuffle = shufflevector <2 x i32> %0, <2 x i32> <i32 -1, i32 -1>, <8 x i32> <i32 1, i32 3, i32 0, i32 0, i32 3, i32 3, i32 2, i32 2>
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store volatile <8 x i32> %shuffle, ptr %v8_0, align 32
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ret void
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}
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