File: and-or-fold.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 (14 lines) | stat: -rw-r--r-- 532 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
; RUN: llvm-as < %s | llc -march=x86 | grep and | count 1

; The dag combiner should fold together (x&127)|(y&16711680) -> (x|y)&c1
; in this case.

define i32 @test6(i32 %x, i16 %y) {
        %tmp1 = zext i16 %y to i32              ; <i32> [#uses=1]
        %tmp2 = and i32 %tmp1, 127              ; <i32> [#uses=1]
        %tmp4 = shl i32 %x, 16          ; <i32> [#uses=1]
        %tmp5 = and i32 %tmp4, 16711680         ; <i32> [#uses=1]
        %tmp6 = or i32 %tmp2, %tmp5             ; <i32> [#uses=1]
        ret i32 %tmp6
}