| ; Test that the strstr library call simplifier works correctly. |
| ; |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" |
| |
| @null = private constant [1 x i8] zeroinitializer |
| |
| declare i8 @strstr(i8*, i8*) |
| |
| define i8 @test_no_simplify1(i8* %str) { |
| ; CHECK: @test_no_simplify1 |
| %pat = getelementptr inbounds [1 x i8]* @null, i32 0, i32 0 |
| %ret = call i8 @strstr(i8* %str, i8* %pat) |
| ; CHECK-NEXT: call i8 @strstr |
| ret i8 %ret |
| ; CHECK-NEXT: ret i8 %ret |
| } |
