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simplifylibcalls doesn't optimize llvm.memmove, instcombine does. 

llvm-svn: 50517
This commit is contained in:
Chris Lattner 2008-05-01 06:14:24 +00:00
parent adf28cb71c
commit 4add60753b
1 changed files with 0 additions and 22 deletions
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22
llvm/test/Transforms/SimplifyLibCalls/MemMove.ll
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@ -1,22 +0,0 @@
; Test that the StrCatOptimizer works correctly
; RUN: llvm-as < %s | opt -constprop -simplify-libcalls | \
; RUN: llvm-dis | not grep {call.*llvm.memmove.i32}
@h = constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=1]
@hel = constant [4 x i8] c"hel\00" ; <[4 x i8]*> [#uses=1]
@hello_u = constant [8 x i8] c"hello_u\00" ; <[8 x i8]*> [#uses=1]
declare void @llvm.memmove.i32(i8*, i8*, i32, i32)
define i32 @main() {
%h_p = getelementptr [2 x i8]* @h, i32 0, i32 0 ; <i8*> [#uses=1]
%hel_p = getelementptr [4 x i8]* @hel, i32 0, i32 0 ; <i8*> [#uses=1]
%hello_u_p = getelementptr [8 x i8]* @hello_u, i32 0, i32 0 ; <i8*> [#uses=1]
%target = alloca [1024 x i8] ; <[1024 x i8]*> [#uses=1]
%target_p = getelementptr [1024 x i8]* %target, i32 0, i32 0 ; <i8*> [#uses=3]
call void @llvm.memmove.i32( i8* %target_p, i8* %h_p, i32 2, i32 2 )
call void @llvm.memmove.i32( i8* %target_p, i8* %hel_p, i32 4, i32 4 )
call void @llvm.memmove.i32( i8* %target_p, i8* %hello_u_p, i32 8, i32 8 )
ret i32 0
}