mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-23 15:29:51 +00:00
14 lines
381 B
LLVM
14 lines
381 B
LLVM
|
; With sub reassociation, constant folding can eliminate the uses of %a.
|
||
|
|
;
|
||
|
|
; RUN: llvm-as < %s | opt -reassociate -instcombine | llvm-dis | grep %a | count 1
|
||
|
|
; PR2047
|
||
|
|
|
||
|
|
define i32 @test(i32 %a, i32 %b, i32 %c) nounwind {
|
||
|
|
entry:
|
||
|
|
%tmp3 = sub i32 %a, %b ; <i32> [#uses=1]
|
||
|
|
%tmp5 = sub i32 %tmp3, %c ; <i32> [#uses=1]
|
||
|
|
%tmp7 = sub i32 %tmp5, %a ; <i32> [#uses=1]
|
||
|
|
ret i32 %tmp7
|
||
|
|
}
|
||
|
|
|