File: indirectbr-backedge.ll

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (35 lines) | stat: -rw-r--r-- 1,039 bytes parent folder | download | duplicates (28)
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
30
31
32
33
34
35
; RUN: opt -loop-simplify -S < %s | FileCheck %s

; LoopSimplify shouldn't split loop backedges that use indirectbr.

; CHECK: bb1:                                              ; preds = %bb5, %bb
; CHECK-NEXT: indirectbr

; CHECK: bb5:                                              ; preds = %bb1
; CHECK-NEXT: br label %bb1{{$}}

define void @foo(i8* %p) nounwind {
bb:
  br label %bb1

bb1:                                              ; preds = %bb5, %bb1, %bb
  indirectbr i8* %p, [label %bb6, label %bb7, label %bb1, label %bb2, label %bb3, label %bb5, label %bb4]

bb2:                                              ; preds = %bb1
  ret void

bb3:                                              ; preds = %bb1
  ret void

bb4:                                              ; preds = %bb1
  ret void

bb5:                                              ; preds = %bb1
  br label %bb1

bb6:                                              ; preds = %bb1
  ret void

bb7:                                              ; preds = %bb1
  ret void
}