File: pr38677.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.8-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,696 kB
  • sloc: cpp: 7,438,781; ansic: 1,393,871; asm: 1,012,926; python: 241,771; f90: 86,635; objc: 75,411; lisp: 42,144; pascal: 17,286; sh: 8,596; ml: 5,082; perl: 4,730; makefile: 3,591; awk: 3,523; javascript: 2,251; xml: 892; fortran: 672
file content (31 lines) | stat: -rw-r--r-- 960 bytes parent folder | download | duplicates (10) 
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
 
; 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
  %cmp = icmp eq ptr @A, @B
  br label %final

final:                                            ; preds = %delay, %entry
  %use2 = phi i1 [ false, %entry ], [ %cmp, %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
}