1; Test that the strcat libcall simplifier works correctly. 2; 3; RUN: opt < %s -passes=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@empty = constant [1 x i8] c"\00" 9@a = common global [32 x i8] zeroinitializer, align 1 10 11declare ptr @strcat(ptr, ptr) 12 13define void @test_simplify1() { 14; CHECK-LABEL: @test_simplify1( 15; CHECK-NOT: call ptr @strcat 16; CHECK: ret void 17 18 call ptr @strcat(ptr @a, ptr @hello) 19 ret void 20} 21 22define void @test_simplify2() { 23; CHECK-LABEL: @test_simplify2( 24; CHECK-NEXT: ret void 25 26 call ptr @strcat(ptr @a, ptr @empty) 27 ret void 28} 29