maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/clang/test/CodeGen/x86-cf-protection.c

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

9 lines
470 B
C
Raw Normal View History

This patch aims to match the changes introduced in gcc by https://gcc.gnu.org/ml/gcc-cvs/2018-04/msg00534.html. The -mibt feature flag is being removed, and the -fcf-protection option now also defines a CET macro and causes errors when used on non-X86 targets, while X86 targets no longer check for -mibt and -mshstk to determine if -fcf-protection is supported. -mshstk is now used only to determine availability of shadow stack intrinsics. Comes with an LLVM patch (D46882). Patch by mike.dvoretsky Differential Revision: https://reviews.llvm.org/D46881 llvm-svn: 332704
2018-05-18 19:56:21 +08:00
// RUN: %clang -target i386-unknown-unknown -x c -E -dM -o - -fcf-protection=return %s | FileCheck %s --check-prefix=RETURN
// RUN: %clang -target i386-unknown-unknown -x c -E -dM -o - -fcf-protection=branch %s | FileCheck %s --check-prefix=BRANCH
// RUN: %clang -target i386-unknown-unknown -x c -E -dM -o - -fcf-protection=full %s | FileCheck %s --check-prefix=FULL
Added Control Flow Protection Flag Cf-protection is a target independent flag that instructs the back-end to instrument control flow mechanisms like: Branch, Return, etc. For example in X86 this flag will be used to instrument Indirect Branch Tracking instructions. Differential Revision: https://reviews.llvm.org/D40478 Change-Id: I5126e766c0e6b84118cae0ee8a20fe78cc373dea llvm-svn: 322063
2018-01-09 16:53:59 +08:00
This patch aims to match the changes introduced in gcc by https://gcc.gnu.org/ml/gcc-cvs/2018-04/msg00534.html. The -mibt feature flag is being removed, and the -fcf-protection option now also defines a CET macro and causes errors when used on non-X86 targets, while X86 targets no longer check for -mibt and -mshstk to determine if -fcf-protection is supported. -mshstk is now used only to determine availability of shadow stack intrinsics. Comes with an LLVM patch (D46882). Patch by mike.dvoretsky Differential Revision: https://reviews.llvm.org/D46881 llvm-svn: 332704
2018-05-18 19:56:21 +08:00
// RETURN: #define __CET__ 2
// BRANCH: #define __CET__ 1
// FULL: #define __CET__ 3
Added Control Flow Protection Flag Cf-protection is a target independent flag that instructs the back-end to instrument control flow mechanisms like: Branch, Return, etc. For example in X86 this flag will be used to instrument Indirect Branch Tracking instructions. Differential Revision: https://reviews.llvm.org/D40478 Change-Id: I5126e766c0e6b84118cae0ee8a20fe78cc373dea llvm-svn: 322063
2018-01-09 16:53:59 +08:00
void foo() {}