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TheRock/compiler/amd-llvm/llvm/test/CodeGen/X86/fold-load-vec.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

50 lines
1.9 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=corei7 -mattr=+sse4.1 | FileCheck %s
; rdar://12721174
; We should not fold movss into pshufd since pshufd expects m128 while movss
; loads from m32.
define void @sample_test(ptr %source, ptr %dest) nounwind {
; CHECK-LABEL: sample_test:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: subq $24, %rsp
; CHECK-NEXT: movq %rdi, {{[0-9]+}}(%rsp)
; CHECK-NEXT: movq %rsi, {{[0-9]+}}(%rsp)
; CHECK-NEXT: movq $0, (%rsp)
; CHECK-NEXT: xorps %xmm0, %xmm0
; CHECK-NEXT: unpcklps {{.*#+}} xmm0 = xmm0[0],mem[0],xmm0[1],mem[1]
; CHECK-NEXT: movlps %xmm0, (%rsp)
; CHECK-NEXT: movlps %xmm0, (%rsi)
; CHECK-NEXT: movq {{[0-9]+}}(%rsp), %rax
; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; CHECK-NEXT: movshdup {{.*#+}} xmm1 = xmm0[1,1,3,3]
; CHECK-NEXT: callq ext@PLT
; CHECK-NEXT: addq $24, %rsp
; CHECK-NEXT: retq
entry:
%source.addr = alloca ptr, align 8
%dest.addr = alloca ptr, align 8
%tmp = alloca <2 x float>, align 8
store ptr %source, ptr %source.addr, align 8
store ptr %dest, ptr %dest.addr, align 8
store <2 x float> zeroinitializer, ptr %tmp, align 8
%0 = load ptr, ptr %source.addr, align 8
%1 = load <4 x float>, ptr %0, align 16
%2 = extractelement <4 x float> %1, i32 0
%3 = load <2 x float>, ptr %tmp, align 8
%4 = insertelement <2 x float> %3, float %2, i32 1
store <2 x float> %4, ptr %tmp, align 8
%5 = load <2 x float>, ptr %tmp, align 8
%6 = load ptr, ptr %dest.addr, align 8
store <2 x float> %5, ptr %6, align 8
%7 = load ptr, ptr %dest.addr, align 8
%8 = load <2 x float>, ptr %7, align 8
%vecext = extractelement <2 x float> %8, i32 0
%9 = load ptr, ptr %dest.addr, align 8
%10 = load <2 x float>, ptr %9, align 8
%vecext4 = extractelement <2 x float> %10, i32 1
call void @ext(float %vecext, float %vecext4)
ret void
}
declare void @ext(float, float)