File: storepointer-compare-no-null-opt.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (40 lines) | stat: -rw-r--r-- 1,005 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
32
33
34
35
36
37
38
39
40
 
; RUN: opt < %s -passes=globalopt -S | FileCheck %s
; CHECK: global

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

define internal void @Actual() {
; CHECK-LABEL: Actual(
        ret void
}

define void @init() {
; CHECK-LABEL: init(
; CHECK: store void ()* @Actual, void ()** @G
        store void ()* @Actual, void ()** @G
        ret void
}

define void @doit() #0 {
; CHECK-LABEL: doit(
        %FP = load void ()*, void ()** @G         ; <void ()*> [#uses=2]
; CHECK: %FP = load void ()*, void ()** @G
        %CC = icmp eq void ()* %FP, null                ; <i1> [#uses=1]
; CHECK: %CC = icmp eq void ()* %FP, null
        br i1 %CC, label %isNull, label %DoCall
; CHECK: br i1 %CC, label %isNull, label %DoCall

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

isNull:         ; preds = %0
; CHECK: isNull:
; CHECK: ret void
        ret void
}

attributes #0 = { null_pointer_is_valid }