File: 2011-09-28-CMovCombineBug.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (30 lines) | stat: -rw-r--r-- 727 bytes parent folder | download | duplicates (21)
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
; RUN: llc -mtriple=thumbv7-apple-ios -mcpu=cortex-a8 < %s

; rdar://10196296
; ARM target specific dag combine created a cycle in DAG.

define void @t() nounwind ssp {
  %1 = load i64, i64* undef, align 4
  %2 = shl i32 5, 0
  %3 = zext i32 %2 to i64
  %4 = and i64 %1, %3
  %5 = lshr i64 %4, undef
  switch i64 %5, label %8 [
    i64 0, label %9
    i64 1, label %6
    i64 4, label %9
    i64 5, label %7
  ]

; <label>:6                                       ; preds = %0
  unreachable

; <label>:7                                       ; preds = %0
  unreachable

; <label>:8                                       ; preds = %0
  unreachable

; <label>:9                                       ; preds = %0, %0
  ret void
}