mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
7c856c09cd
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54832 91177308-0d34-0410-b5e6-96231b3b80d8
24 lines
765 B
LLVM
24 lines
765 B
LLVM
; RUN: llvm-as < %s | opt -reassociate -gvn -instcombine | llvm-dis | not grep add
|
|
|
|
@a = weak global i32 0 ; <i32*> [#uses=1]
|
|
@b = weak global i32 0 ; <i32*> [#uses=1]
|
|
@c = weak global i32 0 ; <i32*> [#uses=1]
|
|
@d = weak global i32 0 ; <i32*> [#uses=0]
|
|
|
|
define i32 @foo() {
|
|
%tmp.0 = load i32* @a ; <i32> [#uses=2]
|
|
%tmp.1 = load i32* @b ; <i32> [#uses=2]
|
|
; (a+b)
|
|
%tmp.2 = add i32 %tmp.0, %tmp.1 ; <i32> [#uses=1]
|
|
%tmp.4 = load i32* @c ; <i32> [#uses=2]
|
|
; (a+b)+c
|
|
%tmp.5 = add i32 %tmp.2, %tmp.4 ; <i32> [#uses=1]
|
|
; (a+c)
|
|
%tmp.8 = add i32 %tmp.0, %tmp.4 ; <i32> [#uses=1]
|
|
; (a+c)+b
|
|
%tmp.11 = add i32 %tmp.8, %tmp.1 ; <i32> [#uses=1]
|
|
; X ^ X = 0
|
|
%RV = xor i32 %tmp.5, %tmp.11 ; <i32> [#uses=1]
|
|
ret i32 %RV
|
|
}
|