File: br-undef-cond.ll

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.6-3
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 2,245,028 kB
  • sloc: cpp: 7,619,726; ansic: 1,434,018; asm: 1,058,748; python: 252,740; f90: 94,671; objc: 70,685; lisp: 42,813; pascal: 18,401; sh: 8,601; ml: 5,111; perl: 4,720; makefile: 3,675; awk: 3,523; javascript: 2,409; xml: 892; fortran: 770
file content (26 lines) | stat: -rw-r--r-- 601 bytes parent folder | download | duplicates (3)
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
; RUN: llc < %s -verify-machineinstrs

; Make sure we don't end up with a CBNZ of an undef v-/phys-reg.

target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "arm64-apple-ios"

declare void @bar(ptr)

define void @foo(ptr %m, i32 %off0) {
.thread1653:
  br i1 poison, label %0, label %.thread1880

  %1 = icmp eq i32 undef, 0
  %.not = xor i1 %1, true
  %brmerge = or i1 %.not, undef
  br i1 %brmerge, label %.thread1880, label %.thread1705

.thread1705:
  ret void

.thread1880:
  %m1652.ph = phi ptr [ %m, %0 ], [ null, %.thread1653 ]
  call void @bar(ptr %m1652.ph)
  ret void
}