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https://github.com/c64scene-ar/llvm-6502.git
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eb1641d54a
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164899 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
705 B
LLVM
29 lines
705 B
LLVM
; RUN: llc < %s -march=arm -mattr=+v6t2 | FileCheck %s
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; RUN: llc < %s -march=arm -mattr=+v6t2 -arm-use-mulops=false | FileCheck %s -check-prefix=NO_MULOPS
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define i32 @f1(i32 %a, i32 %b, i32 %c) {
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%tmp1 = mul i32 %a, %b
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%tmp2 = sub i32 %c, %tmp1
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ret i32 %tmp2
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}
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; sub doesn't commute, so no mls for this one
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define i32 @f2(i32 %a, i32 %b, i32 %c) {
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%tmp1 = mul i32 %a, %b
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%tmp2 = sub i32 %tmp1, %c
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ret i32 %tmp2
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}
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; CHECK: f1:
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; CHECK: mls r0, r0, r1, r2
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; NO_MULOPS: f1:
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; NO_MULOPS: mul r0, r0, r1
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; NO_MULOPS-NEXT: sub r0, r2, r0
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; CHECK: f2:
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; CHECK: mul r0, r0, r1
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; CHECK-NEXT: sub r0, r0, r2
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; NO_MULOPS: f2:
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; NO_MULOPS: mul r0, r0, r1
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; NO_MULOPS-NEXT: sub r0, r0, r2
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