File: phi.ll

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.6-3
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 2,245,028 kB
  • sloc: cpp: 7,619,726; ansic: 1,434,018; asm: 1,058,748; python: 252,740; f90: 94,671; objc: 70,685; lisp: 42,813; pascal: 18,401; sh: 8,601; ml: 5,111; perl: 4,720; makefile: 3,675; awk: 3,523; javascript: 2,409; xml: 892; fortran: 770
file content (17 lines) | stat: -rw-r--r-- 430 bytes parent folder | download | duplicates (17) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
; This is a basic correctness check for constant propagation.  The add
; instruction should be eliminated.

; RUN: opt < %s -passes=instsimplify,dce -S | not grep phi

define i32 @test(i1 %B) {
BB0:
        br i1 %B, label %BB1, label %BB3

BB1:            ; preds = %BB0
        br label %BB3

BB3:            ; preds = %BB1, %BB0
        %Ret = phi i32 [ 1, %BB0 ], [ 1, %BB1 ]         ; <i32> [#uses=1]
        ret i32 %Ret
}