1 ; Test that the strcat libcall simplifier works correctly. 2 ; 3 ; RUN: opt < %s -instcombine -S | FileCheck %s 4 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" 6 7 @hello = constant [6 x i8] c"hello\00" 8 @empty = constant [1 x i8] c"\00" 9 @a = common global [32 x i8] zeroinitializer, align 1 10 11 declare i16* @strcat(i8*, i8*) 12 13 define void @test_nosimplify1() { 14 ; CHECK-LABEL: @test_nosimplify1( 15 ; CHECK: call i16* @strcat 16 ; CHECK: ret void 17 18 %dst = getelementptr [32 x i8], [32 x i8]* @a, i32 0, i32 0 19 %src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0 20 call i16* @strcat(i8* %dst, i8* %src) 21 ret void 22 } 23
