File: landingpad.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (39 lines) | stat: -rw-r--r-- 1,474 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
; RUN: opt < %s -mtriple aarch64-linux-android29 -passes=hwasan -S | FileCheck %s --check-prefixes=COMMON,LP,ARM
; RUN: opt < %s -mtriple x86_64-linux -hwasan-instrument-landing-pads -passes=hwasan -S | FileCheck %s --check-prefixes=COMMON,LP,X86
; RUN: opt < %s -mtriple aarch64-linux-android30 -passes=hwasan -S | FileCheck %s --check-prefixes=COMMON,NOLP

target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux-android"

define i32 @f() local_unnamed_addr sanitize_hwaddress personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
entry:
  invoke void @g()
          to label %return unwind label %lpad

lpad:
  ; COMMON:       landingpad { i8*, i32 }
  ; COMMON-NEXT:    catch i8* null
  %0 = landingpad { i8*, i32 }
          catch i8* null

  ; NOLP-NOT: call void @__hwasan_handle_vfork
  ; LP-NEXT: %[[X:[^ ]*]] = call i64 @llvm.read_register.i64(metadata ![[META:[^ ]*]])
  ; LP-NEXT: call void @__hwasan_handle_vfork(i64 %[[X]])

  %1 = extractvalue { i8*, i32 } %0, 0
  %2 = tail call i8* @__cxa_begin_catch(i8* %1)
  tail call void @__cxa_end_catch()
  br label %return
return:
  %retval.0 = phi i32 [ 1, %lpad ], [ 0, %entry ]
  ret i32 %retval.0
}

declare void @g() local_unnamed_addr

declare i32 @__gxx_personality_v0(...)
declare i8* @__cxa_begin_catch(i8*) local_unnamed_addr
declare void @__cxa_end_catch() local_unnamed_addr

; ARM: ![[META]] = !{!"sp"}
; X86: ![[META]] = !{!"rsp"}