File: deref-abstract-gc.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (23 lines) | stat: -rw-r--r-- 786 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
; RUN: opt -passes=print-memderefs -S < %s -disable-output  -use-dereferenceable-at-point-semantics 2>&1 | FileCheck %s --check-prefixes=CHECK

target datalayout = "e-i32:32:64"

; For the abstract machine model (before RS4GC), gc managed objects
; conceptually live forever.  But there may be non-managed objects which are
; freed.
; CHECK-LABEL: 'abstract_model'
; CHECK: %gc_ptr
; CHECK-NOT: %other_ptr
; FIXME: Can infer the gc pointer case
define void @abstract_model(ptr addrspace(1) dereferenceable(8) %gc_ptr,
                            ptr dereferenceable(8) %other_ptr)
    gc "statepoint-example" {
entry:
  call void @mayfree()
  load i32, ptr addrspace(1) %gc_ptr
  load i32, ptr %other_ptr
  ret void
}

; Can free any object accessible in memory
declare void @mayfree()