31 lines
1.0 KiB
LLVM
31 lines
1.0 KiB
LLVM
; RUN: llc -fp-contract=fast -mattr=+fma -disable-cgp < %s -o - | FileCheck %s
|
|
; Check that the 2nd and 3rd arguments of fmaXXX231 reg1, reg2, mem3 are not commuted.
|
|
; <rdar://problem/16800495>
|
|
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-apple-macosx"
|
|
|
|
; CHECK-LABEL: test1:
|
|
; %arg lives in xmm0 and it shouldn't be redefined until it is used in the FMA.
|
|
; CHECK-NOT: {{.*}}, %xmm0
|
|
; %addr lives in rdi.
|
|
; %addr2 lives in rsi.
|
|
; CHECK: vmovss (%rsi), [[ADDR2:%xmm[0-9]+]]
|
|
; The assembly syntax is in the reverse order.
|
|
; CHECK: vfmadd231ss (%rdi), [[ADDR2]], %xmm0
|
|
define void @test1(float* %addr, float* %addr2, float %arg) {
|
|
entry:
|
|
br label %loop
|
|
|
|
loop:
|
|
%sum0 = phi float [ %fma, %loop ], [ %arg, %entry ]
|
|
%addrVal = load float, float* %addr, align 4
|
|
%addr2Val = load float, float* %addr2, align 4
|
|
%fmul = fmul float %addrVal, %addr2Val
|
|
%fma = fadd float %sum0, %fmul
|
|
br i1 true, label %exit, label %loop
|
|
|
|
exit:
|
|
store float %fma, float* %addr, align 4
|
|
ret void
|
|
}
|