mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
36a0947820
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
21 lines
611 B
LLVM
21 lines
611 B
LLVM
; RUN: llc < %s -march=x86 | grep mul | count 1
|
|
; RUN: llc < %s -march=x86 | grep add | count 3
|
|
|
|
define i32 @t1(i32 %a, i32 %b) nounwind readnone {
|
|
entry:
|
|
%tmp0 = add i32 %b, %a
|
|
%tmp1 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %tmp0, i32 2)
|
|
%tmp2 = extractvalue { i32, i1 } %tmp1, 0
|
|
ret i32 %tmp2
|
|
}
|
|
|
|
define i32 @t2(i32 %a, i32 %b) nounwind readnone {
|
|
entry:
|
|
%tmp0 = add i32 %b, %a
|
|
%tmp1 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %tmp0, i32 4)
|
|
%tmp2 = extractvalue { i32, i1 } %tmp1, 0
|
|
ret i32 %tmp2
|
|
}
|
|
|
|
declare { i32, i1 } @llvm.smul.with.overflow.i32(i32, i32) nounwind
|