File: hang.ll

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (33 lines) | stat: -rw-r--r-- 1,280 bytes parent folder | download | duplicates (14)
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
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -S -passes=guard-widening < %s | FileCheck %s

; Make sure we don't hang here.
define i64 @test() {
; CHECK-LABEL: define i64 @test() {
; CHECK-NEXT:  bb:
; CHECK-NEXT:    [[DOTGW_FR:%.*]] = freeze i1 poison
; CHECK-NEXT:    [[WIDE_CHK:%.*]] = and i1 poison, [[DOTGW_FR]]
; CHECK-NEXT:    call void (i1, ...) @llvm.experimental.guard(i1 [[WIDE_CHK]]) [ "deopt"() ]
; CHECK-NEXT:    br label [[BB2:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    br i1 poison, label [[BB3:%.*]], label [[BB2]]
; CHECK:       bb3:
; CHECK-NEXT:    [[CALL:%.*]] = call i64 (...) @llvm.experimental.deoptimize.i64() [ "deopt"() ]
; CHECK-NEXT:    ret i64 [[CALL]]
;
bb:
  call void (i1, ...) @llvm.experimental.guard(i1 poison) [ "deopt"() ]
  br label %bb2

bb2:                                              ; preds = %bb2, %bb
  br i1 poison, label %bb3, label %bb2

bb3:                                              ; preds = %bb2
  call void (i1, ...) @llvm.experimental.guard(i1 poison) [ "deopt"() ]
  %call = call i64 (...) @llvm.experimental.deoptimize.i64() [ "deopt"() ]
  ret i64 %call
}

declare i64 @llvm.experimental.deoptimize.i64(...)

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