31 lines
1022 B
LLVM
31 lines
1022 B
LLVM
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; RUN: llc -fp-contract=fast -mattr=+fma -disable-cgp < %s -o - | FileCheck %s
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; Check that the 2nd and 3rd arguments of fmaXXX231 reg1, reg2, mem3 are not commuted.
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; <rdar://problem/16800495>
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx"
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; CHECK-LABEL: test1:
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; %arg lives in xmm0 and it shouldn't be redefined until it is used in the FMA.
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; CHECK-NOT: {{.*}}, %xmm0
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; %addr lives in rdi.
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; %addr2 lives in rsi.
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; CHECK: vmovss (%rdi), [[ADDR:%xmm[0-9]+]]
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; The assembly syntax is in the reverse order.
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; CHECK: vfmadd231ss (%rsi), [[ADDR]], %xmm0
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define void @test1(float* %addr, float* %addr2, float %arg) {
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entry:
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br label %loop
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loop:
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%sum0 = phi float [ %fma, %loop ], [ %arg, %entry ]
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%addrVal = load float, float* %addr, align 4
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%addr2Val = load float, float* %addr2, align 4
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%fmul = fmul float %addrVal, %addr2Val
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%fma = fadd float %sum0, %fmul
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br i1 true, label %exit, label %loop
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exit:
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store float %fma, float* %addr, align 4
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ret void
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}
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