| ; Test that the strncmp library call simplifier works correctly. |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| 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" |
| |
| @hello = constant [6 x i8] c"hello\00" |
| @hell = constant [5 x i8] c"hell\00" |
| |
| declare i16 @strncmp(i8*, i8*, i32) |
| |
| define i16 @test_nosimplify() { |
| ; CHECK: @test_nosimplify |
| ; CHECK: call i16 @strncmp |
| ; CHECK: ret i16 %temp1 |
| |
| %str1 = getelementptr inbounds [5 x i8]* @hell, i32 0, i32 0 |
| %str2 = getelementptr inbounds [6 x i8]* @hello, i32 0, i32 0 |
| %temp1 = call i16 @strncmp(i8* %str1, i8* %str2, i32 10) |
| ret i16 %temp1 |
| } |
