File: 2008-02-14-BitMiscompile.ll

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8~deb9u3
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (17 lines) | stat: -rw-r--r-- 457 bytes parent folder | download | duplicates (38) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i386-unknown-unknown | FileCheck %s

define i32 @test(i1 %A) {
; CHECK-LABEL: test:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT:    andl $1, %eax
; CHECK-NEXT:    negl %eax
; CHECK-NEXT:    movzbl %al, %eax
; CHECK-NEXT:    retl
  %B = zext i1 %A to i32
  %C = sub i32 0, %B
  %D = and i32 %C, 255
  ret i32 %D
}