File: 2011-09-28-CMovCombineBug.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
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
}