Chandler Carruth 5b854f1ea5 Re-instate r187323 which fast-tracks promotable allocas as soon as the ... SROA-based analysis has enough information. This should work now that both mem2reg *and* the SSAUpdater-based AllocaPromoter have been updated to be able to promote the types of allocas that the SROA analysis detects. I've included tests for the AllocaPromoter that were only possible to write once we fast-tracked promotable allocas without rewriting them. This includes a test both for r187347 and r188145. Original commit log for r187323: """ Now that mem2reg understands how to cope with a slightly wider set of uses of an alloca, we can pre-compute promotability while analyzing an alloca for splitting in SROA. That lets us short-circuit the common case of a bunch of trivially promotable allocas. This cuts 20% to 30% off the run time of SROA for typical frontend-generated IR sequneces I'm seeing. It gets the new SROA to within 20% of ScalarRepl for such code. My current benchmark for these numbers is PR15412, but it fits the general pattern of IR emitted by Clang so it should be widely applicable. """ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188146 91177308-0d34-0410-b5e6-96231b3b80d8		2013-08-11 02:17:11 +00:00
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Hello	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombine	Fix missing -*- C++ -*-s	2013-08-06 00:16:21 +00:00
Instrumentation	DataFlowSanitizer: Remove unreachable BBs so IR continues to verify	2013-08-09 21:42:53 +00:00
IPO	Factor FlattenCFG out from SimplifyCFG	2013-08-06 02:43:45 +00:00
ObjCARC	[objc-arc] Track if we encountered an additive overflow while computing {TopDown,BottomUp}PathCounts and do nothing if it occurred.	2013-08-09 23:22:27 +00:00
Scalar	Re-instate r187323 which fast-tracks promotable allocas as soon as the	2013-08-11 02:17:11 +00:00
Utils	Revert r188119 "Kill some duplicated code for removing unreachable BBs."	2013-08-10 20:16:06 +00:00
Vectorize	Add ISD::FROUND for libm round()	2013-08-07 22:49:12 +00:00
CMakeLists.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
LLVMBuild.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
Makefile	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00