mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
21 lines
514 B
LLVM
21 lines
514 B
LLVM
|
; RUN: llvm-as < %s | opt -reassociate -gcse -instcombine | llvm-dis | not grep add
|
||
|
|
|
||
|
|
%a = weak global int 0
|
||
|
|
%b = weak global int 0
|
||
|
|
%c = weak global int 0
|
||
|
|
%d = weak global int 0
|
||
|
|
|
||
|
|
implementation
|
||
|
|
|
||
|
|
int %foo() {
|
||
|
|
%tmp.0 = load int* %a
|
||
|
|
%tmp.1 = load int* %b
|
||
|
|
%tmp.2 = add int %tmp.0, %tmp.1 ; (a+b)
|
||
|
|
%tmp.4 = load int* %c
|
||
|
|
%tmp.5 = add int %tmp.2, %tmp.4 ; (a+b)+c
|
||
|
|
%tmp.8 = add int %tmp.0, %tmp.4 ; (a+c)
|
||
|
|
%tmp.11 = add int %tmp.8, %tmp.1 ; (a+c)+b
|
||
|
|
%RV = xor int %tmp.5, %tmp.11 ; X ^ X = 0
|
||
|
|
ret int %RV
|
||
|
|
}
|