File: strcmp-2.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (20 lines) | stat: -rw-r--r-- 702 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
; Test that the strcmp library call simplifier works correctly.
; RUN: opt < %s -passes=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 @strcmp(i8*, i8*)

define i16 @test_nosimplify() {
; CHECK-LABEL: @test_nosimplify(
; CHECK: call i16 @strcmp
; 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 @strcmp(i8* %str1, i8* %str2)
  ret i16 %temp1
}