Chandler Carruth f710fb14ee Try to use a better set of abstractions for computing the alignment ... necessary during rewriting. As part of this, fix a real think-o here where we might have left off an alignment specification when the address is in fact underaligned. I haven't come up with any way to trigger this, as there is always some other factor that reduces the alignment, but it certainly might have been an observable bug in some way I can't think of. This also slightly changes the strategy for placing explicit alignments on loads and stores to only do so when the alignment does not match that required by the ABI. This causes a few redundant alignments to go away from test cases. I've also added a couple of tests that really push on the alignment that we end up with on loads and stores. More to come here as I try to fix an underlying bug I have conjectured and produced test cases for, although it's not clear if this bug is the one currently hitting dragonegg's gcc47 bootstrap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165100 91177308-0d34-0410-b5e6-96231b3b80d8		2012-10-03 08:14:02 +00:00
..
ADCE.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
BasicBlockPlacement.cpp	Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which	2010-10-19 17:21:58 +00:00
CMakeLists.txt	Introduce a new SROA implementation.	2012-09-14 09:22:59 +00:00
CodeGenPrepare.cpp	Do not delete BBs if their addresses are taken. rdar://12396696	2012-09-28 23:58:57 +00:00
ConstantProp.cpp	Last bit of TargetLibraryInfo propagation. Also fixed a case for TargetData	2011-12-01 21:29:16 +00:00
CorrelatedValuePropagation.cpp	CorrelatedPropagation: BasicBlock::removePredecessor can simplify PHI nodes. If the it's the condition of a SwitchInst, reload it.	2012-09-28 10:42:50 +00:00
DCE.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
DeadStoreElimination.cpp	Don't forget that strcpy and friends return a pointer to the destination, so	2012-09-25 01:55:59 +00:00
EarlyCSE.cpp	Use LLVM_DELETED_FUNCTION in place of 'DO NOT IMPLEMENT' comments.	2012-09-15 17:09:36 +00:00
GlobalMerge.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
GVN.cpp	Release build: guard dump functions with	2012-09-12 05:06:18 +00:00
IndVarSimplify.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
JumpThreading.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
LICM.cpp	LICM may hoist an instruction with undefined behavior above a trap.	2012-09-04 10:25:04 +00:00
LLVMBuild.txt	LLVMBuild: Remove trailing newline, which irked me.	2011-12-12 19:48:00 +00:00
LoopDeletion.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
LoopIdiomRecognize.cpp	LoopIdiom: Give up when the loop is not in canonical form.	2012-09-21 17:27:23 +00:00
LoopInstSimplify.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
LoopRotation.cpp	LoopRotation: Make the brute force DomTree update more brute force.	2012-09-02 11:57:22 +00:00
LoopStrengthReduce.cpp	LSR critical edge splitting fix for PR13756.	2012-09-18 17:51:33 +00:00
LoopUnrollPass.cpp	Remove the `hasFnAttr' method from Function.	2012-09-26 21:48:26 +00:00
LoopUnswitch.cpp	Remove the `hasFnAttr' method from Function.	2012-09-26 21:48:26 +00:00
LowerAtomic.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
Makefile	make -fno-rtti the default unless a directory builds with REQUIRES_RTTI.	2010-01-24 20:43:08 +00:00
MemCpyOptimizer.cpp	MemCpyOpt: When forming a memset from stores also take GEP constexprs into account.	2012-09-13 16:29:49 +00:00
ObjCARC.cpp	Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION.	2012-09-18 02:01:41 +00:00
Reassociate.cpp	Stop reassociate from looking through expressions of arbitrary complexity. This	2012-07-26 09:26:40 +00:00
Reg2Mem.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
Scalar.cpp	Introduce a new SROA implementation.	2012-09-14 09:22:59 +00:00
ScalarReplAggregates.cpp	Port the global copy optimization from the SROA pass to InstCombine.	2012-08-21 08:39:44 +00:00
SCCP.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
SimplifyCFGPass.cpp	Update function names to conform to guidelines.	2012-09-06 00:59:08 +00:00
SimplifyLibCalls.cpp	SimplifyLibCalls: Give all safely-shrinkable libcalls the same treatment.	2012-08-22 19:39:15 +00:00
Sink.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
SROA.cpp	Try to use a better set of abstractions for computing the alignment	2012-10-03 08:14:02 +00:00
TailRecursionElimination.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00