xref: /llvm-project/llvm/test/Transforms/InstCombine/2007-10-10-EliminateMemCpy.ll (revision 4ab40eca080965c65802710e39adbb78c4ce7bde) 
1; RUN: opt < %s -passes=instcombine -S | not grep " call"
2; RUN: opt < %s -O3 -S | not grep xyz
3target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
4
5@.str = internal constant [4 x i8] c"xyz\00"		; <ptr> [#uses=1]
6
7define void @foo(ptr %P) {
8entry:
9  %P_addr = alloca ptr
10  store ptr %P, ptr %P_addr
11  %tmp = load ptr, ptr %P_addr, align 4
12  call void @llvm.memcpy.p0.p0.i32(ptr %tmp, ptr @.str, i32 4, i1 false)
13  br label %return
14
15return:                                           ; preds = %entry
16  ret void
17}
18
19declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind
20