File: dom-cond.ll

package info (click to toggle)
llvm-toolchain-3.7 1%3A3.7.1-5
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 345,556 kB
  • ctags: 362,199
  • sloc: cpp: 2,156,381; ansic: 458,339; objc: 91,547; python: 89,988; asm: 86,305; sh: 21,479; makefile: 6,853; perl: 5,601; ml: 5,458; pascal: 3,933; lisp: 2,429; xml: 686; cs: 239; php: 202; csh: 117
file content (18 lines) | stat: -rw-r--r-- 380 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
; RUN: opt < %s -instcombine -value-tracking-dom-conditions -S | FileCheck %s

define i32 @dom_cond(i32 %a, i32 %b) {
; CHECK-LABEL: @dom_cond(
entry:
  %v = add i32 %a, %b
  %cond = icmp ule i32 %v, 7
  br i1 %cond, label %then, label %exit

then:
  %v2 = add i32 %v, 8
; CHECK: or i32 %v, 8
  br label %exit

exit:
  %v3 = phi i32 [ %v, %entry ], [ %v2, %then ]
  ret i32 %v3
}