File: storepointer-compare.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 (29 lines) | stat: -rw-r--r-- 780 bytes parent folder | download | duplicates (14) 
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
 
; RUN: opt < %s -globalopt -S | FileCheck %s
; CHECK: call void @Actual

; Check that a comparison does not prevent an indirect call from being made 
; direct.  The global will still remain, but indirect call elim is still good.

@G = internal global void ()* null              ; <void ()**> [#uses=2]

define internal void @Actual() {
        ret void
}

define void @init() {
        store void ()* @Actual, void ()** @G
        ret void
}

define void @doit() {
        %FP = load void ()*, void ()** @G         ; <void ()*> [#uses=2]
        %CC = icmp eq void ()* %FP, null                ; <i1> [#uses=1]
        br i1 %CC, label %isNull, label %DoCall

DoCall:         ; preds = %0
        call void %FP( )
        ret void

isNull:         ; preds = %0
        ret void
}