llvm-6502/lib/Transforms/Utils
Benjamin Kramer b2b2273ef4 Fix SCEV cache invalidation in LCSSA and LoopSimplify.
The LoopSimplify bug is pretty harmless because the loop goes from unanalyzable
to analyzable but the LCSSA bug is very nasty. It only comes into play with a
specific order of the LoopPassManager worklist and can cause actual
miscompilations, when a SCEV refers to a value that has been replaced with PHI
node. SCEVExpander may then insert code into the wrong place, either violating
domination or randomly miscompiling stuff.

Comes with an extensive test case reduced from the test-suite with
bugpoint+SCEVValidator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166787 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-26 17:31:43 +00:00
..
AddrModeMatcher.cpp Move TargetData to DataLayout. 2012-10-08 16:38:25 +00:00
BasicBlockUtils.cpp Move SplitBlockAndInsertIfThen to BasicBlockUtils. 2012-10-19 10:48:31 +00:00
BreakCriticalEdges.cpp Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767 2012-09-27 10:14:43 +00:00
BuildLibCalls.cpp Add in support for getIntPtrType to get the pointer type based on the address space. 2012-10-24 15:52:52 +00:00
BypassSlowDivision.cpp This patch corrects commit 165126 by using an integer bit width instead of 2012-10-04 21:33:40 +00:00
CloneFunction.cpp Add an enum for the return and function indexes into the AttrListPtr object. This gets rid of some magic numbers. 2012-10-15 07:29:08 +00:00
CloneModule.cpp Extend the IL for selecting TLS models (PR9788) 2012-06-23 11:37:03 +00:00
CMakeLists.txt Implement new LibCallSimplifier class 2012-10-13 16:45:24 +00:00
CmpInstAnalysis.cpp Convert assert(0) to llvm_unreachable 2012-02-07 05:05:23 +00:00
CodeExtractor.cpp Have 'addFnAttr' take the attribute enum value. Then have it build the attribute object and add it appropriately. No functionality change. 2012-10-10 03:12:49 +00:00
DemoteRegToStack.cpp Remove redundant comment. Use a more efficient datatype. 2012-02-17 02:12:54 +00:00
InlineFunction.cpp Move TargetData to DataLayout. 2012-10-08 16:38:25 +00:00
InstructionNamer.cpp Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 2010-10-19 17:21:58 +00:00
IntegerDivision.cpp Expansions for u/srem, using the udiv expansion. More unit tests for udiv and u/srem. 2012-09-26 01:55:01 +00:00
LCSSA.cpp Fix SCEV cache invalidation in LCSSA and LoopSimplify. 2012-10-26 17:31:43 +00:00
LLVMBuild.txt LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
Local.cpp Fix a compiler warning with an unused variable. 2012-10-24 22:32:26 +00:00
LoopSimplify.cpp Fix SCEV cache invalidation in LCSSA and LoopSimplify. 2012-10-26 17:31:43 +00:00
LoopUnroll.cpp LoopUnroll: always check for NULL LoopPassManager 2012-06-05 17:51:05 +00:00
LoopUnrollRuntime.cpp Fix typos found by http://github.com/lyda/misspell-check 2012-06-02 10:20:22 +00:00
LowerExpectIntrinsic.cpp Move llvm/Support/MDBuilder.h to llvm/MDBuilder.h, to live with 2012-07-15 23:26:50 +00:00
LowerInvoke.cpp revert r166264 because the LTO build is still failing 2012-10-19 21:28:43 +00:00
LowerSwitch.cpp Reverted r156659, due to probable performance regressions, DenseMap should be used here: 2012-07-04 05:53:05 +00:00
Makefile
Mem2Reg.cpp Remove outdated references to dominance frontiers. 2011-01-18 03:53:26 +00:00
MetaRenamer.cpp Review feedback from Duncan Sands. Alphabetize includes and simplify 2012-09-14 19:19:57 +00:00
ModuleUtils.cpp Move llvm/Support/IRBuilder.h -> llvm/IRBuilder.h 2012-06-29 12:38:19 +00:00
PromoteMemoryToRegister.cpp Fix typo. 2012-10-23 00:38:15 +00:00
SimplifyCFG.cpp Also optimize large switch statements. 2012-10-25 18:51:15 +00:00
SimplifyIndVar.cpp Move TargetData to DataLayout. 2012-10-08 16:38:25 +00:00
SimplifyInstructions.cpp Move TargetData to DataLayout. 2012-10-08 16:38:25 +00:00
SimplifyLibCalls.cpp Add in support for getIntPtrType to get the pointer type based on the address space. 2012-10-24 15:52:52 +00:00
SSAUpdater.cpp Fix undefined behavior (binding a reference to a dereferenced null pointer) if 2012-08-17 21:42:44 +00:00
UnifyFunctionExitNodes.cpp [unwind removal] We no longer have 'unwind' instructions being generated, so 2012-02-06 21:16:41 +00:00
Utils.cpp Add a pass that renames everything with metasyntatic names. This works well after using bugpoint to reduce the confusion presented by the original names, which no longer mean what they used to. 2012-09-11 02:46:18 +00:00
ValueMapper.cpp Rename virtual table anchors from Anchor() to anchor() for consistency with the rest of the tree. 2012-09-26 06:36:36 +00:00