1; Test that the strncpy library call simplifier works correctly.
2;
3; RUN: opt < %s -instcombine -S | FileCheck %s
4
5target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
6
7@hello = constant [6 x i8] c"hello\00"
8@a = common global [32 x i8] zeroinitializer, align 1
9
10declare i16* @strncpy(i8*, i8*, i32)
11
12; Check that 'strncpy' functions with the wrong prototype aren't simplified.
13
14define void @test_no_simplify1() {
15; CHECK-LABEL: @test_no_simplify1(
16  %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0
17  %src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0
18
19  call i16* @strncpy(i8* %dst, i8* %src, i32 6)
20; CHECK: call i16* @strncpy
21  ret void
22}
23