1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; Test that the strncat libcall simplifier works correctly.
4 ; RUN: opt < %s -instcombine -S | FileCheck %s
6 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"
8 @hello = constant [6 x i8] c"hello\00"
9 @empty = constant [1 x i8] c"\00"
10 @a = common global [32 x i8] zeroinitializer, align 1
12 declare i16* @strncat(i8*, i8*, i32)
14 define void @test_nosimplify1() {
15 ; CHECK-LABEL: @test_nosimplify1(
16 ; CHECK-NEXT: [[TMP1:%.*]] = call i16* @strncat(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i32 13)
17 ; CHECK-NEXT: ret void
20 %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0
21 %src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0
22 call i16* @strncat(i8* %dst, i8* %src, i32 13)