1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
; 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-LABEL: @test_nosimplify(
; CHECK: call i16 @strncmp
; CHECK: ret i16 %temp1
%str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
%str2 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
%temp1 = call i16 @strncmp(i8* %str1, i8* %str2, i32 10)
ret i16 %temp1
}
|
