-O1 and above do dont call real optimizer pipeline in ThinLTO PreLink.
Also clang can't add PostLink OptimizerLastEPCallbacks for in-process ThinLTO.
This results in missing sanitizer passes with ThinLTO.
Simple working solution is just call OptimizerLastEPCallbacks
at the end of buildThinLTOPreLinkDefaultPipeline.
Differential Revision: https://reviews.llvm.org/D96320
EarlyCSEPass called after msan redices code size by about 10%.
Similar optimization exists for legacy pass manager in
addGeneralOptsForMemorySanitizer.
Reviewed By: eugenis
Differential Revision: https://reviews.llvm.org/D96406
Tests that use -O1, -O2 and -O3 would often produce different results
with the new pass manager which makes these tests fail. Disable new PM
explicitly for these tests.
Differential Revision: https://reviews.llvm.org/D58375
llvm-svn: 362580
Boilerplate code for using KMSAN instrumentation in Clang.
We add a new command line flag, -fsanitize=kernel-memory, with a
corresponding SanitizerKind::KernelMemory, which, along with
SanitizerKind::Memory, maps to the memory_sanitizer feature.
KMSAN is only supported on x86_64 Linux.
It's incompatible with other sanitizers, but supports code coverage
instrumentation.
llvm-svn: 341641
Summary:
This is the Clang part of the PPC64 memory sanitizer implementation in
D10648.
Reviewers: kcc, eugenis, willschm, wschmidt, samsonov
Reviewed By: samsonov
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D10650
llvm-svn: 240628
Vitaly Buka