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Evgeniy Stepanov 50affbe47f MemTag: stack initializer merging. 
Summary:
MTE provides instructions to update memory tags and data at the same
time. This change makes use of those to generate more compact code for
stack variable tagging + initialization.

We collect memory store and memset instructions following an alloca or a
lifetime.start call, and replace them with the corresponding MTE
intrinsics. Since the intrinsics work on 16-byte aligned chunks, the
stored values are combined as necessary.

Reviewers: pcc, vitalybuka, ostannard

Subscribers: srhines, javed.absar, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66167

llvm-svn: 369297
 		2019-08-19 20:47:09 +00:00
clang Fix poorly formatted HTML in the cxx_status.html file caused by adding 2019-08-19 18:14:22 +00:00
clang-tools-extra [clangd] Added highlighting for tokens that are macro arguments. 2019-08-19 16:27:49 +00:00
compiler-rt Build symbolizer runtime with C++14. 2019-08-19 18:43:52 +00:00
debuginfo-tests Make nrvo-string test more robust. 2019-06-27 20:38:37 +00:00
libclc Revert "Rename F_{None,Text,Append} to OF_{None,Text,Append}. NFC" 2019-08-05 17:23:23 +00:00
libcxx [libc++] Add XFAIL for is_base_of test on AppleClang 11 2019-08-19 17:29:42 +00:00
libcxxabi [libcxxabi] __cxa_guard_require: test guard byte with != 0 instead of == 1 2019-08-16 13:54:44 +00:00
libunwind [runtimes] Don't depend on libpthread on Android 2019-07-22 20:41:03 +00:00
lld [lld][WebAssembly] Honor --no-export-dynamic even with -shared 2019-08-19 16:34:51 +00:00
lldb [lldb-vscode] add `launchCommands` to handle launch specific commands 2019-08-19 20:17:27 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm MemTag: stack initializer merging. 2019-08-19 20:47:09 +00:00
openmp [OpenMP] Enable warning about "implicit fallthrough" 2019-08-15 13:26:55 +00:00
parallel-libs Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
polly [Polly] Migrate llvm::make_unique to std::make_unique 2019-08-14 22:28:12 +00:00
pstl [pstl] Allow customizing whether per-TU insulation is provided 2019-08-13 12:49:00 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format Add .clang-tidy and .clang-format files to the toplevel of the 2019-01-29 16:43:16 +00:00
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitignore Change /build to /build* in top-level .gitignore. 2019-08-02 02:14:08 +00:00
README.md
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README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.