Eli Friedman ca19f19760 Fix for PR3016: detect the tricky case, where there are ... unfoldable references to a PHI node in the block being folded, and disable the transformation in that case. The correct transformation of such PHI nodes depends on whether BB dominates Succ, and dominance is expensive to compute here. (Alternatively, it's possible to check whether any uses are live, but that's also essentially a dominance calculation. Another alternative is to use reg2mem, but it probably isn't a good idea to use that in simplifycfg.) Also, remove some incorrect code from CanPropagatePredecessorsForPHIs which is made unnecessary with this patch: it didn't consider the case where a PHI node in BB has multiple uses. llvm-svn: 79174		2009-08-16 04:23:49 +00:00
..
AddrModeMatcher.cpp	Remove a bunch more now-unnecessary Context arguments.	2009-08-12 16:23:25 +00:00
BasicBlockUtils.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
BasicInliner.cpp	available_externall linkage is not local, this was confusing the codegenerator,	2009-05-23 14:06:57 +00:00
BreakCriticalEdges.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
CloneFunction.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
CloneLoop.cpp	Simplify code by using SmallVector's pop_back_val() instead of	2009-05-06 17:22:41 +00:00
CloneModule.cpp	Get rid of the Pass+Context magic.	2009-07-22 00:24:57 +00:00
CloneTrace.cpp	Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989	2008-04-25 16:53:59 +00:00
CMakeLists.txt	Update CMake files.	2009-07-21 17:43:20 +00:00
CodeExtractor.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
DemoteRegToStack.cpp	Revert yesterday's change by removing the LLVMContext parameter to AllocaInst and MallocInst.	2009-07-15 23:53:25 +00:00
InlineCost.cpp	Remove Value::{isName, getNameRef}.	2009-07-25 23:55:21 +00:00
InlineFunction.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
InstructionNamer.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
LCSSA.cpp	Move more code back to 2.5 APIs.	2009-07-30 23:03:37 +00:00
Local.cpp	Move more code back to 2.5 APIs.	2009-07-30 23:03:37 +00:00
LoopSimplify.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
LowerAllocations.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
LowerInvoke.cpp	Actually privatize a IntegerTypes, and fix a few bugs exposed by this.	2009-08-13 23:27:32 +00:00
LowerSwitch.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
Makefile	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
Mem2Reg.cpp	Get rid of the Pass+Context magic.	2009-07-22 00:24:57 +00:00
PromoteMemoryToRegister.cpp	Fix a bunch of namespace pollution.	2009-08-07 01:32:21 +00:00
SimplifyCFG.cpp	Fix for PR3016: detect the tricky case, where there are	2009-08-16 04:23:49 +00:00
SSI.cpp	SSI construction should just go ahead and ignore instructions in unreachable	2009-08-15 20:12:18 +00:00
UnifyFunctionExitNodes.cpp	Push LLVMContexts through the IntegerType APIs.	2009-08-13 21:58:54 +00:00
UnrollLoop.cpp	More migration to raw_ostream, the water has dried up around the iostream hole.	2009-07-25 00:23:56 +00:00
ValueMapper.cpp	Rename MDNode.h header. It defines MDnode and other metadata classes.	2009-07-28 21:49:47 +00:00