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llvm-mirror/test/CodeGen/Thumb2/thumb2-mls.ll
Jim Grosbach 4ff2fb2fbc Thumb2 size reduction fix for tied operands of tMUL.
The tied source operand of tMUL is the second source operand, not the
first like every other two-address thumb instruction. Special case it
in the size reduction pass to make sure we create the tMUL instruction
properly.

llvm-svn: 151315
2012-02-24 00:33:36 +00:00

20 lines
425 B
LLVM

; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
define i32 @f1(i32 %a, i32 %b, i32 %c) {
%tmp1 = mul i32 %a, %b
%tmp2 = sub i32 %c, %tmp1
ret i32 %tmp2
}
; CHECK: f1:
; CHECK: mls r0, r0, r1, r2
; 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: f2:
; CHECK: muls r0, r1, r0