File: cfguard-cast.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 (35 lines) | stat: -rw-r--r-- 843 bytes parent folder | download | duplicates (9) 
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
 
; RUN: llc < %s -mtriple=x86_64-pc-windows-msvc | FileCheck %s

; Check how constant function pointer casts are handled.

declare void @unprototyped(...)

define i32 @call_unprototyped() {
  call void bitcast (void (...)* @unprototyped to void ()*)()
  ret i32 0
}

; CHECK-LABEL: call_unprototyped:
; CHECK: callq unprototyped
; CHECK: xorl %eax, %eax
; CHECK: retq

declare void @escaped_cast()

define i32 @escape_it_with_cast(i8** %p) {
  store i8* bitcast (void ()* @escaped_cast to i8*), i8** %p
  ret i32 0
}

declare void @dead_constant()

!llvm.module.flags = !{!0}
!0 = !{i32 2, !"cfguard", i32 1}

!dead_constant_root = !{!1}
!1 = !DITemplateValueParameter(name: "dead_constant", value: i8* bitcast (void ()* @dead_constant to i8*))

; CHECK-LABEL: .section .gfids$y,"dr"
; CHECK-NEXT:  .symidx escaped_cast
; CHECK-NOT:   .symidx