File: return-constant.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,998,492 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (52 lines) | stat: -rw-r--r-- 1,430 bytes parent folder | download | duplicates (7)
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
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=ipsccp,instcombine -S | FileCheck %s

define internal i32 @foo(i1 %C) {
; CHECK-LABEL: @foo(
; CHECK-NEXT:    br i1 [[C:%.*]], label [[T:%.*]], label [[F:%.*]]
; CHECK:       T:
; CHECK-NEXT:    ret i32 poison
; CHECK:       F:
; CHECK-NEXT:    ret i32 poison
;
  br i1 %C, label %T, label %F

T:              ; preds = %0
  ret i32 52

F:              ; preds = %0
  ret i32 52
}

define i1 @caller(i1 %C) {
; CHECK-LABEL: @caller(
; CHECK-NEXT:    [[X:%.*]] = call i32 @foo(i1 [[C:%.*]])
; CHECK-NEXT:    ret i1 true
;
  %X = call i32 @foo( i1 %C )             ; <i32> [#uses=1]
  %Y = icmp ne i32 %X, 0          ; <i1> [#uses=1]
  ret i1 %Y
}

define i1 @invokecaller(i1 %C) personality ptr @__gxx_personality_v0 {
; CHECK-LABEL: @invokecaller(
; CHECK-NEXT:    [[X:%.*]] = invoke i32 @foo(i1 [[C:%.*]])
; CHECK-NEXT:            to label [[OK:%.*]] unwind label [[FAIL:%.*]]
; CHECK:       OK:
; CHECK-NEXT:    ret i1 true
; CHECK:       FAIL:
; CHECK-NEXT:    [[EXN:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT:            cleanup
; CHECK-NEXT:    ret i1 false
;
  %X = invoke i32 @foo( i1 %C ) to label %OK unwind label %FAIL             ; <i32> [#uses=1]
OK:
  %Y = icmp ne i32 %X, 0          ; <i1> [#uses=1]
  ret i1 %Y
FAIL:
  %exn = landingpad {ptr, i32}
  cleanup
  ret i1 false
}

declare i32 @__gxx_personality_v0(...)