File: 2008-02-14-BitMiscompile.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 (17 lines) | stat: -rw-r--r-- 457 bytes parent folder | download | duplicates (27) 
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
}