File: ms-secure-hotpatch-lto.c

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.0-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 2,235,796 kB
  • sloc: cpp: 7,617,614; ansic: 1,433,901; asm: 1,058,726; python: 252,096; f90: 94,671; objc: 70,753; lisp: 42,813; pascal: 18,401; sh: 10,032; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,401; javascript: 2,272; xml: 892; fortran: 770
file content (26 lines) | stat: -rw-r--r-- 840 bytes parent folder | download | duplicates (3)
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
// REQUIRES: x86-registered-target

// This verifies that hotpatch function attributes are correctly propagated through LLVM IR when compiling with LTO.
//
// RUN: %clang_cl -c --target=x86_64-windows-msvc -O2 /Z7 -fms-secure-hotpatch-functions-list=this_gets_hotpatched -flto /Fo%t.bc -- %s
// RUN: llvm-dis %t.bc -o - | FileCheck %s
//
// CHECK-LABEL: define dso_local noundef i32 @this_gets_hotpatched()
// CHECK-SAME: #0
//
// CHECK-LABEL: define dso_local noundef i32 @this_does_not_get_hotpatched()
// CHECK-SAME: #1

// CHECK: attributes #0
// CHECK-SAME: "marked_for_windows_hot_patching"

// CHECK: attributes #1
// CHECK-NOT: "marked_for_windows_hot_patching"

int __declspec(noinline) this_gets_hotpatched() {
    return 42;
}

int __declspec(noinline) this_does_not_get_hotpatched() {
    return this_gets_hotpatched() + 100;
}