[all-commits] [llvm/llvm-project] 95e43f: [AArch64] Add -mmark-bti-property flag.
Dani via All-commits
all-commits at lists.llvm.org
Wed Sep 16 15:24:32 PDT 2020
Branch: refs/heads/master
Home: https://github.com/llvm/llvm-project
Commit: 95e43f84b7b9c61011aece7583c0367297dd67d8
https://github.com/llvm/llvm-project/commit/95e43f84b7b9c61011aece7583c0367297dd67d8
Author: Daniel Kiss <daniel.kiss at arm.com>
Date: 2020-09-17 (Thu, 17 Sep 2020)
Changed paths:
M clang/include/clang/Driver/Options.td
M clang/lib/Driver/ToolChains/Clang.cpp
A clang/test/Driver/arm64-markbti.S
M llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
M llvm/lib/Target/AArch64/MCTargetDesc/AArch64TargetStreamer.cpp
M llvm/lib/Target/AArch64/MCTargetDesc/AArch64TargetStreamer.h
Log Message:
-----------
[AArch64] Add -mmark-bti-property flag.
Writing the .note.gnu.property manually is error prone and hard to
maintain in the assembly files.
The -mmark-bti-property is for the assembler to emit the section with the
GNU_PROPERTY_AARCH64_FEATURE_1_BTI. To be used when C/C++ is compiled
with -mbranch-protection=bti.
This patch refactors the .note.gnu.property handling.
Reviewed By: chill, nickdesaulniers
Differential Revision: https://reviews.llvm.org/D81930
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