aboutsummaryrefslogtreecommitdiffstats
path: root/test/Transforms/LCSSA/unreachable-use.ll
blob: c9e456c17474ae3e5e1b1557b37ba9e12452f7ac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
; RUN: opt < %s -lcssa -S -verify-loop-info | FileCheck %s
; PR6546

; LCSSA doesn't need to transform uses in blocks not reachable
; from the entry block.

; CHECK: %tmp33 = load i1*, i1** %tmp

define fastcc void @dfs() nounwind {
bb:
  br label %bb44

bb44:
  br i1 undef, label %bb7, label %bb45

bb7:
  %tmp = bitcast i1** undef to i1**
  br label %bb15

bb15:
  br label %bb44

bb32:
  %tmp33 = load i1*, i1** %tmp, align 8
  br label %bb45

bb45:
  unreachable
}