File: 2002-05-03-NotOperator.ll

package info (click to toggle)
llvm-2.7 2.7-6
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 59,992 kB
  • ctags: 49,499
  • sloc: cpp: 373,792; ansic: 16,885; sh: 12,614; asm: 6,809; ada: 3,083; ml: 2,942; python: 2,671; perl: 2,404; makefile: 1,691; pascal: 1,235; exp: 399; objc: 291; lisp: 184; csh: 117; xml: 38; f90: 36
file content (19 lines) | stat: -rw-r--r-- 523 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
; This bug has to do with the fact that constant propogation was implemented in
; terms of _logical_ not (! in C) instead of _bitwise_ not (~ in C).  This was
; due to a spec change.

; Fix #2: The unary not instruction now no longer exists. Change to xor.

; RUN: opt < %s -constprop -S | \
; RUN:   not grep {i32 0}

define i32 @test1() {
        %R = xor i32 123, -1            ; <i32> [#uses=1]
        ret i32 %R
}

define i32 @test2() {
        %R = xor i32 -123, -1           ; <i32> [#uses=1]
        ret i32 %R
}