1 ; Test that the strcat libcall simplifier works correctly per the
4 ; RUN: opt < %s -passes=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 @null = constant [1 x i8] zeroinitializer
10 @null_hello = constant [7 x i8] c"\00hello\00"
12 declare ptr @strcat(ptr, ptr)
13 declare i32 @puts(ptr)
17 ; CHECK-NOT: call ptr @strcat
18 ; CHECK: call i32 @puts
20 %target = alloca [1024 x i8]
21 store i8 0, ptr %target
23 ; rslt1 = strcat(target, "hello\00")
24 %rslt1 = call ptr @strcat(ptr %target, ptr @hello)
26 ; rslt2 = strcat(rslt1, "\00")
27 %rslt2 = call ptr @strcat(ptr %rslt1, ptr @null)
29 ; rslt3 = strcat(rslt2, "\00hello\00")
30 %rslt3 = call ptr @strcat(ptr %rslt2, ptr @null_hello)
32 call i32 @puts( ptr %rslt3 )