mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-03 15:29:28 +00:00
f75ef668a7
GVN to be more aggressive. Patch by Hans Wennborg! (with a comment added by me) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86582 91177308-0d34-0410-b5e6-96231b3b80d8
21 lines
433 B
LLVM
21 lines
433 B
LLVM
; RUN: opt %s -gvn -S | FileCheck %s
|
|
|
|
%t = type { i32 }
|
|
declare void @test1f(i8*)
|
|
|
|
define void @test1(%t* noalias %stuff ) {
|
|
%p = getelementptr inbounds %t* %stuff, i32 0, i32 0
|
|
%before = load i32* %p
|
|
|
|
call void @test1f(i8* null)
|
|
|
|
%after = load i32* %p ; <--- This should be a dead load
|
|
%sum = add i32 %before, %after;
|
|
|
|
store i32 %sum, i32* %p
|
|
ret void
|
|
; CHECK: load
|
|
; CHECK-NOT: load
|
|
; CHECK: ret void
|
|
}
|