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30 lines
759 B
30 lines
759 B
4 months ago
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; RUN: llc -mtriple=arm-eabi -mattr=+v6t2 %s -o - | FileCheck %s
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; RUN: llc -mtriple=arm-eabi -mattr=+v6t2 -arm-use-mulops=false %s -o - \
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; RUN: | 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-LABEL: f1:
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; CHECK: mls r0, r0, r1, r2
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; NO_MULOPS-LABEL: 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-LABEL: 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-LABEL: 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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