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Anna Thomas 037e540f08 [AliasAnalysis] Treat invariant.start as read-memory 
Summary:
We teach alias analysis that invariant.start is readonly.
This helps with GVN and memcopy optimizations that currently treat.
invariant.start as a clobber.
We need to treat this as readonly, so that DSE does not incorrectly
remove stores prior to the invariant.start

Reviewers: sanjoy, reames, majnemer, dberlin

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D23214

llvm-svn: 278138
 		2016-08-09 17:18:05 +00:00
..
Analysis [AliasAnalysis] Treat invariant.start as read-memory 2016-08-09 17:18:05 +00:00
AsmParser LLLexer.cpp: Avoid using BitsToDouble() to preserve SNaN like "double 0x7FF4000000000000". 2016-08-05 11:59:49 +00:00
Bitcode [ThinLTO] Address review comments from PGO indirect call promotion (NFC) 2016-07-18 18:31:50 +00:00
CodeGen Revert "[X86] Support the "ms-hotpatch" attribute." 2016-08-08 21:20:15 +00:00
DebugInfo CodeView: extract the OMF Directory Header 2016-08-09 00:25:12 +00:00
ExecutionEngine Revert r278065 while I investigate some build-bot breakage. 2016-08-08 22:57:30 +00:00
Fuzzer [libFuzzer] make libFuzzer work with a bit older clang versions 2016-08-06 21:28:56 +00:00
IR Consistently use ModuleAnalysisManager 2016-08-09 00:28:38 +00:00
IRReader
…
LTO Move legacy LTO interface headers to legacy/ directory. 2016-07-14 21:21:16 +00:00
LibDriver Object: Replace NewArchiveIterator with a simpler NewArchiveMember class. NFCI. 2016-06-29 22:27:42 +00:00
LineEditor Fix Clang-tidy modernize-deprecated-headers warnings in some files; other minor fixes. 2016-03-28 17:40:08 +00:00
Linker IR: New representation for CFI and virtual call optimization pass metadata. 2016-06-24 21:21:32 +00:00
MC Re-commit r277988: [mips][ias] Fix all the hacks related to MIPS-specific unary operators (%hi/%lo/%gp_rel/etc.). 2016-08-08 11:50:25 +00:00
Object CodeView: extract the OMF Directory Header 2016-08-09 00:25:12 +00:00
ObjectYAML BPF: Use official ELF e_machine value 2016-07-15 22:27:55 +00:00
Option Option parser: class for consuming a joined arg in addition to all remaining args 2016-04-15 00:23:30 +00:00
Passes Consistently use CGSCCAnalysisManager 2016-08-09 00:28:56 +00:00
ProfileData [PGO] Make needsComdatForCounter() available (NFC) 2016-07-21 20:50:02 +00:00
Support Add unittests to {ARM | AArch64}TargetParser. 2016-07-28 06:11:18 +00:00
TableGen [TableGen] Autobrief-ize Record. NFC. 2016-07-14 14:53:14 +00:00
Target [X86][XOP] Add support for combining target shuffles to VPERMIL2PD/VPERMIL2PS 2016-08-09 12:56:15 +00:00
Transforms [Profile] turn off verbose warnings by default 2016-08-09 15:35:28 +00:00
CMakeLists.txt Move ObjectYAML code to a new library. 2016-03-01 19:15:06 +00:00
LLVMBuild.txt Add LLVMBuild for ObjectYAML. 2016-03-01 21:29:33 +00:00