File: pr36335-phi-undef.ll

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.6-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, 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 (31 lines) | stat: -rw-r--r-- 785 bytes parent folder | download | duplicates (4) 
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=newgvn -S %s | FileCheck %s

declare void @foo(i32)

define void @main(i1 %c1, i1 %c2, i32 %x) {
; CHECK-LABEL: @main(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 [[C1:%.*]], label [[L:%.*]], label [[END:%.*]]
; CHECK:       L:
; CHECK-NEXT:    [[XOR:%.*]] = xor i32 [[X:%.*]], -1
; CHECK-NEXT:    [[NEG:%.*]] = xor i32 [[XOR]], -1
; CHECK-NEXT:    call void @foo(i32 [[NEG]])
; CHECK-NEXT:    br label [[L]]
; CHECK:       end:
; CHECK-NEXT:    ret void
;
entry:
  br i1 %c1, label %L, label %end

L:
  %d.1 = phi i8 [ undef, %entry ], [ -1, %L ]
  %conv = sext i8 %d.1 to i32
  %xor = xor i32 %x, %conv
  %neg = xor i32 %xor, -1
  call void @foo(i32 %neg)
  br label %L

end:
  ret void
}