File: return-constant.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (34 lines) | stat: -rw-r--r-- 861 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
31
32
33
34
 
; RUN: opt < %s -ipconstprop -instcombine -S | FileCheck %s

; CHECK: ret i1 true
; CHECK: ret i1 true
; CHECK-NOT: ret i1 true

define internal i32 @foo(i1 %C) {
        br i1 %C, label %T, label %F

T:              ; preds = %0
        ret i32 52

F:              ; preds = %0
        ret i32 52
}

define i1 @caller(i1 %C) {
        %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 i32 (...)* @__gxx_personality_v0 {
        %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 {i8*, i32}
                 cleanup
        ret i1 false
}

declare i32 @__gxx_personality_v0(...)