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Kai Luo afc65d2411 [AIX] Adjust CSR order to avoid breaking ABI regarding traceback 
Allocate non-volatile registers in order to be compatible with ABI, regarding gpr_save.

Quoted from https://www.ibm.com/docs/en/ssw_aix_72/assembler/assembler_pdf.pdf page55,
> The preferred method of using GPRs is to use the volatile registers first. Next, use the nonvolatile registers
> in descending order, starting with GPR31.

This patch is based on @jsji 's initial draft.

Tested on test-suite and SPEC, found no degradation.

Reviewed By: jsji, ZarkoCA, xingxue

Differential Revision: https://reviews.llvm.org/D100167
2021-07-03 04:45:26 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings [SanitizeCoverage] Add support for NoSanitizeCoverage function attribute 2021-05-25 12:57:14 +02:00
cmake [cmake] Invoke strip without -l and with non-grouped flags. 2021-07-01 13:37:58 -07:00
docs Revert "[DebugInfo] Enforce implicit constraints on distinct MDNodes" 2021-07-02 15:57:07 -07:00
examples [Orc] At CBindings for LazyRexports 2021-07-01 21:52:05 +02:00
include [SelectionDAG] Rename memory VT argument for getMaskedGather/getMaskedScatter from VT to MemVT. 2021-07-02 17:37:40 -07:00
lib [AIX] Adjust CSR order to avoid breaking ABI regarding traceback 2021-07-03 04:45:26 +00:00
projects [RFC][debuginfo-test] Rename debug-info lit tests for general purposes 2021-06-28 11:31:40 +01:00
resources
runtimes [runtimes] Fix umbrella component targets 2021-06-12 19:49:44 -07:00
test [AIX] Adjust CSR order to avoid breaking ABI regarding traceback 2021-07-03 04:45:26 +00:00
tools [llvm-dwarfdump] Add comment saying where DumpDebugFrame comes from 2021-07-02 09:56:21 -04:00
unittests Unpack the CostEstimate feature in ML inlining models. 2021-07-02 16:57:16 +00:00
utils [gn build] Port 99f00635d7ac 2021-07-02 17:03:49 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy NFC: .clang-tidy: Inherit configs from parents to improve maintainability 2021-06-08 08:25:59 -07:00
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore Remove .gitignore entries not relevant in the monorepo. 2021-04-07 12:25:02 -07:00
CMakeLists.txt [RFC][debuginfo-test] Rename debug-info lit tests for general purposes 2021-06-28 11:31:40 +01:00
CODE_OWNERS.TXT [M68k][CODE_OWNERS](0/8) Add code owner for the M68k target 2021-03-08 12:30:56 -08:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Update personal info in CREDITS.TXT 2021-04-11 19:25:02 +08:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
README.txt Test commit. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

README.txt 

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.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.