llvm-6502/test/CodeGen/ARM/mls.ll
Bob Wilson eb1641d54a Add LLVM support for Swift.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164899 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-29 21:43:49 +00:00

29 lines
705 B
LLVM

; RUN: llc < %s -march=arm -mattr=+v6t2 | FileCheck %s
; RUN: llc < %s -march=arm -mattr=+v6t2 -arm-use-mulops=false | 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: f1:
; CHECK: mls r0, r0, r1, r2
; NO_MULOPS: f1:
; NO_MULOPS: mul r0, r0, r1
; NO_MULOPS-NEXT: sub r0, r2, r0
; CHECK: f2:
; CHECK: mul r0, r0, r1
; CHECK-NEXT: sub r0, r0, r2
; NO_MULOPS: f2:
; NO_MULOPS: mul r0, r0, r1
; NO_MULOPS-NEXT: sub r0, r0, r2