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Hiroshi Inoue 6d8320b465 [StackColoring] Update AliasAnalysis information in stack coloring pass (part 2) 
This patch is update after the first patch (https://reviews.llvm.org/rL309651) based on the post-commit comments.

Stack coloring pass need to maintain AliasAnalysis information when merging stack slots of different types.
Actually, there is a FIXME comment in StackColoring.cpp

// FIXME: In order to enable the use of TBAA when using AA in CodeGen,
// we'll also need to update the TBAA nodes in MMOs with values
// derived from the merged allocas.

But, TBAA has been already enabled in CodeGen without fixing this pass.
The incorrect TBAA metadata results in recent failures in bootstrap test on ppc64le (PR33928) by allowing unsafe instruction scheduling.
Although we observed the problem on ppc64le, this is a platform neutral issue.

This patch makes the stack coloring pass maintains AliasAnalysis information when merging multiple stack slots.

This patch fixes PR33928.

llvm-svn: 309849
2017-08-02 18:16:32 +00:00
bindings Update the Go bindings for r309426 (remove offset from llvm.dbg.value) 2017-07-28 22:44:44 +00:00
cmake [OCaml] Pass -D/-UNDEBUG through to ocamlc 2017-07-29 08:10:24 +00:00
docs Revert "Xray docs with description of Flight Data Recorder binary format." 2017-08-02 17:36:52 +00:00
examples Defeat another -Wunused-but-set-variable warning 2017-07-19 15:06:31 +00:00
include Remove the unused Offset field from MachineLocation (NFC) 2017-08-02 17:07:38 +00:00
lib [StackColoring] Update AliasAnalysis information in stack coloring pass (part 2) 2017-08-02 18:16:32 +00:00
projects Add temporary workaround to allow in-tree libc++ builds on Windows 2017-05-11 01:44:30 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake] Remove redundant logic in runtimes/CMakeList.txt 2017-07-24 17:26:28 +00:00
test [AsmParser][GAS-compatibility] Ignore an empty 'p2align' directive 2017-08-02 17:36:10 +00:00
tools Fix the bug that parseAAPipeline is not invoked in runNewPMPasses in release compiler. 2017-08-02 03:03:19 +00:00
unittests [PostDom] document the current handling of infinite loops and unreachables 2017-08-01 14:40:55 +00:00
utils Revert "[lit] Avoid copying llvm/utils/lit/tests/Inputs with lit site configs" 2017-08-02 17:16:25 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt Revert "[lit] Avoid copying llvm/utils/lit/tests/Inputs with lit site configs" 2017-08-02 17:16:25 +00:00
CODE_OWNERS.TXT Remove the BBVectorize pass. 2017-06-30 07:09:08 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Another test commit 2017-07-01 03:24:06 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt
README.txt Test commit. Added a blank line. 2017-03-06 20:45:33 +00:00
RELEASE_TESTERS.TXT [RelTest] Diana is doing both releases now 2017-07-14 08:33:52 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
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Please see the documentation provided in docs/ for further
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