File: 2002-08-22-DominanceProblem.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (18 lines) | stat: -rw-r--r-- 486 bytes parent folder | download | duplicates (36) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
; RUN: llvm-as %s -o /dev/null
; RUN: verify-uselistorder %s

; Dominance relationships is not calculated correctly for unreachable blocks,
; which causes the verifier to barf on this input.

define i32 @test(i1 %b) {
BB0:
        ret i32 7 ; Loop is unreachable

Loop:           ; preds = %L2, %Loop
        %B = phi i32 [ %B, %L2 ], [ %B, %Loop ]         ;PHI has same value always. 
        br i1 %b, label %L2, label %Loop

L2:             ; preds = %Loop
        br label %Loop
}