File: pr38677.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 (30 lines) | stat: -rw-r--r-- 951 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
20
21
22
23
24
25
26
27
28
29
30
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
;RUN: opt -passes=instcombine -S %s | FileCheck %s

@A = extern_weak global i32, align 4
@B = extern_weak global i32, align 4

define i32 @foo(i1 %which, ptr %dst) {
; CHECK-LABEL: @foo(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 true, label [[FINAL:%.*]], label [[DELAY:%.*]]
; CHECK:       delay:
; CHECK-NEXT:    br label [[FINAL]]
; CHECK:       final:
; CHECK-NEXT:    store i1 false, ptr [[DST:%.*]], align 1
; CHECK-NEXT:    ret i32 1
;
entry:
  br i1 true, label %final, label %delay

delay:                                            ; preds = %entry
  br label %final

final:                                            ; preds = %delay, %entry
  %use2 = phi i1 [ false, %entry ], [ icmp eq (ptr @A, ptr @B), %delay ]
  %value = select i1 %use2, i32 2, i32 1
  %B7 = mul i32 %value, 2147483647
  %C3 = icmp ule i32 %B7, 0
  store i1 %C3, ptr %dst
  ret i32 %value
}