File: mls.ll

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llvm-toolchain-16 1%3A16.0.6-15~deb12u1
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; RUN: llc -mtriple=arm-eabi -mattr=+v6t2 %s -o - | FileCheck %s
; RUN: llc -mtriple=arm-eabi -mattr=+v6t2 -arm-use-mulops=false %s -o - \
; RUN:  | FileCheck %s -check-prefix=NO_MULOPS

define i32 @f1(i32 %a, i32 %b, i32 %c) {
    %tmp1 = mul i32 %a, %b
    %tmp2 = sub i32 %c, %tmp1
    ret i32 %tmp2
}

; sub doesn't commute, so no mls for this one
define i32 @f2(i32 %a, i32 %b, i32 %c) {
    %tmp1 = mul i32 %a, %b
    %tmp2 = sub i32 %tmp1, %c
    ret i32 %tmp2
}

; CHECK-LABEL: f1:
; CHECK: mls	r0, r0, r1, r2
; NO_MULOPS-LABEL: f1:
; NO_MULOPS: mul r0, r0, r1
; NO_MULOPS-NEXT: sub r0, r2, r0

; CHECK-LABEL: f2:
; CHECK: mul r0, r0, r1
; CHECK-NEXT: sub r0, r0, r2
; NO_MULOPS-LABEL: f2:
; NO_MULOPS: mul r0, r0, r1
; NO_MULOPS-NEXT: sub r0, r0, r2