Heuristic: If the number of operands in the alias are more than the number of
[llvm/stm8.git] / test / Transforms / SimplifyLibCalls / MemCpy.ll
blob39662b1589af2633a6464a72a6bd5c6504189d66
1 ; RUN: opt < %s -constprop -instcombine -S | not grep {call.*llvm.memcpy.i32}
3 @h = constant [2 x i8] c"h\00"          ; <[2 x i8]*> [#uses=1]
4 @hel = constant [4 x i8] c"hel\00"              ; <[4 x i8]*> [#uses=1]
5 @hello_u = constant [8 x i8] c"hello_u\00"              ; <[8 x i8]*> [#uses=1]
7 declare void @llvm.memcpy.i32(i8*, i8*, i32, i32)
9 define i32 @main() {
10         %h_p = getelementptr [2 x i8]* @h, i32 0, i32 0         ; <i8*> [#uses=1]
11         %hel_p = getelementptr [4 x i8]* @hel, i32 0, i32 0             ; <i8*> [#uses=1]
12         %hello_u_p = getelementptr [8 x i8]* @hello_u, i32 0, i32 0             ; <i8*> [#uses=1]
13         %target = alloca [1024 x i8]            ; <[1024 x i8]*> [#uses=1]
14         %target_p = getelementptr [1024 x i8]* %target, i32 0, i32 0            ; <i8*> [#uses=3]
15         call void @llvm.memcpy.i32( i8* %target_p, i8* %h_p, i32 2, i32 2 )
16         call void @llvm.memcpy.i32( i8* %target_p, i8* %hel_p, i32 4, i32 4 )
17         call void @llvm.memcpy.i32( i8* %target_p, i8* %hello_u_p, i32 8, i32 8 )
18         ret i32 0