This is an archive of the discontinued LLVM Phabricator instance.

	Show First 20 Lines • Show All 41 Lines • ▼ Show 20 Lines
	Some of the major new features and improvements to Clang are listed			Some of the major new features and improvements to Clang are listed
	here. Generic improvements to Clang as a whole or to its underlying			here. Generic improvements to Clang as a whole or to its underlying
	infrastructure are described first, followed by language-specific			infrastructure are described first, followed by language-specific
	sections with improvements to Clang's support for those languages.			sections with improvements to Clang's support for those languages.

	Major New Features			Major New Features
	------------------			------------------

	- ...			- Clang now supports the ``-fzero-call-used-regs`` feature for x86. The purpose
				of this feature is to limit Return-Oriented Programming (ROP) exploits and
				information leakage. It works by zeroing out a selected class of registers
				before function return --- e.g., all GPRs that are used within the function.
				There is an analogous ``zero_call_used_regs`` attribute to allow for finer
				control of this feature.

	Improvements to Clang's diagnostics			Improvements to Clang's diagnostics
	^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^			^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

	Non-comprehensive list of changes in this release			Non-comprehensive list of changes in this release
	-------------------------------------------------			-------------------------------------------------

	New Compiler Flags			New Compiler Flags
	▲ Show 20 Lines • Show All 175 Lines • Show Last 20 Lines

This is an archive of the discontinued LLVM Phabricator instance.

Insert a blurb about the -fzero-call-used-regs featureClosedPublic

Details

Diff Detail

Event Timeline

Revision Contents

Diff 408731

clang/docs/ReleaseNotes.rst

Insert a blurb about the -fzero-call-used-regs feature
ClosedPublic