File: xor-and.ll

package info (click to toggle)
llvm 2.6-9.1
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 57,604 kB
  • ctags: 44,336
  • sloc: cpp: 344,766; sh: 12,407; ansic: 10,617; ada: 3,070; ml: 2,505; perl: 2,496; makefile: 1,426; pascal: 1,163; exp: 389; asm: 307; python: 298; objc: 260; lisp: 182; csh: 117; xml: 38; f90: 36; tcl: 20
file content (12 lines) | stat: -rw-r--r-- 388 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
 
; RUN: llvm-as < %s | opt -scalar-evolution -disable-output -analyze \
; RUN:   | grep {\\-->  (zext i4 (-8 + (trunc i64 (8 \\* %x) to i4)) to i64)}

; ScalarEvolution shouldn't try to analyze %z into something like
;   -->  (zext i4 (-1 + (-1 * (trunc i64 (8 * %x) to i4))) to i64)

define i64 @foo(i64 %x) {
  %a = shl i64 %x, 3
  %t = and i64 %a, 8
  %z = xor i64 %t, 8
  ret i64 %z
}