File: sdiv-guard.ll

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (19 lines) | stat: -rw-r--r-- 747 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

declare void @llvm.experimental.guard(i1, ...)

; Regression test. If %flag is false then %s == 0 and guard should be triggered.
define i32 @a(i1 %flag, i32 %X) nounwind readnone {
; CHECK-LABEL: @a(
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 [[X:%.*]], 0
; CHECK-NEXT:    call void (i1, ...) @llvm.experimental.guard(i1 [[CMP]]) #[[ATTR2:[0-9]+]] [ "deopt"() ]
; CHECK-NEXT:    [[R:%.*]] = sdiv i32 100, [[X]]
; CHECK-NEXT:    ret i32 [[R]]
;
  %s = select i1 %flag, i32 %X, i32 0
  %cmp = icmp ne i32 %s, 0
  call void(i1, ...) @llvm.experimental.guard( i1 %cmp )[ "deopt"() ]
  %r = sdiv i32 100, %s
  ret i32 %r
}