1 ; Test that the strncpy library call simplifier works correctly.
3 ; RUN: opt < %s -instcombine -S | FileCheck %s
5 target 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"
7 @hello = constant [6 x i8] c"hello\00"
8 @a = common global [32 x i8] zeroinitializer, align 1
10 declare i16* @strncpy(i8*, i8*, i32)
12 ; Check that 'strncpy' functions with the wrong prototype aren't simplified.
14 define 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
19 call i16* @strncpy(i8* %dst, i8* %src, i32 6)
20 ; CHECK: call i16* @strncpy