6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-24 22:24:54 +00:00
Code Issues Projects Releases Wiki Activity

Make the MemCpyOptimizer a bit more aggressive. I can't think of a scenerio

Browse Source 
where this would be bad as the backend shouldn't have a problem inlining small
memcpys.
rdar://10510150

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145865 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier
2011-12-05 22:37:00 +00:00
parent 713c70238c
commit d8bd26ee24
2 changed files with 18 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
test/Transforms/MemCpyOpt/form-memset.ll
View File

@@ -57,8 +57,8 @@ entry:
declare i32 @bar(...)
%struct.MV = type { i16, i16 }
%struct.MV = type { i16, i16 }
define void @test2() nounwind {
entry:
@@ -220,3 +220,19 @@ entry:
; CHECK: call void @llvm.memset.p0i8.i64(i8* %2, i8 0, i64 24, i32 1, i1 false)
}
; More aggressive heuristic
; rdar://9892684
define void @test7(i32* nocapture %c) nounwind optsize {
store i32 -1, i32* %c, align 4
%1 = getelementptr inbounds i32* %c, i32 1
store i32 -1, i32* %1, align 4
%2 = getelementptr inbounds i32* %c, i32 2
store i32 -1, i32* %2, align 4
%3 = getelementptr inbounds i32* %c, i32 3
store i32 -1, i32* %3, align 4
%4 = getelementptr inbounds i32* %c, i32 4
store i32 -1, i32* %4, align 4
; CHECK: @test7
; CHECK: call void @llvm.memset.p0i8.i64(i8* %5, i8 -1, i64 20, i32 4, i1 false)
ret void
}