File: and-xor-or.ll

package info (click to toggle)
llvm-toolchain-4.0 1%3A4.0.1-10~deb9u2
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 493,332 kB
  • sloc: cpp: 2,698,100; ansic: 552,773; asm: 128,821; python: 121,589; objc: 105,054; sh: 21,174; lisp: 6,758; ml: 5,532; perl: 5,311; pascal: 5,245; makefile: 2,083; cs: 1,868; xml: 686; php: 212; csh: 117
file content (24 lines) | stat: -rw-r--r-- 524 bytes parent folder | download | duplicates (11)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
; RUN: opt < %s -instcombine -S | FileCheck %s

; rdar://10770603
; (x & y) | (x ^ y) -> x | y 
define i64 @or(i64 %x, i64 %y) nounwind uwtable readnone ssp {
  %1 = and i64 %y, %x
  %2 = xor i64 %y, %x
  %3 = add i64 %1, %2
  ret i64 %3
; CHECK-LABEL: @or(
; CHECK: or i64
; CHECK-NEXT: ret
}

; (x & y) + (x ^ y) -> x | y 
define i64 @or2(i64 %x, i64 %y) nounwind uwtable readnone ssp {
  %1 = and i64 %y, %x
  %2 = xor i64 %y, %x
  %3 = or i64 %1, %2
  ret i64 %3
; CHECK-LABEL: @or2(
; CHECK: or i64
; CHECK-NEXT: ret
}