Chandler Carruth f8c8a9cbb4 Teach the function cloner (and thus the inliner) to simplify PHINodes ... aggressively. There are lots of dire warnings about this being expensive that seem to predate switching to the TrackingVH-based value remapper that is automatically updated on RAUW. This makes it easy to not just prune single-entry PHIs, but to fully simplify PHIs, and to recursively simplify the newly inlined code to propagate PHINode simplifications. This introduces a bit of a thorny problem though. We may end up simplifying a branch condition to a constant when we fold PHINodes, and we would like to nuke any dead blocks resulting from this so that time isn't wasted continually analyzing them, but this isn't easy. Deleting basic blocks *after* they are fully cloned and mapped into the new function currently requires manually updating the value map. The last piece of the simplification-during-inlining puzzle will require either switching to WeakVH mappings or some other piece of refactoring. I've left a FIXME in the testcase about this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153410 91177308-0d34-0410-b5e6-96231b3b80d8		2012-03-25 10:34:54 +00:00
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Analysis	Try to harden the recursive simplification still further. This is again	2012-03-24 22:34:26 +00:00
Archive	Include cstdio in a few place that depended on getting it transitively through StringExtras.h	2012-03-23 11:35:30 +00:00
AsmParser	Convert assert(0) to llvm_unreachable	2012-02-07 05:05:23 +00:00
Bitcode	llvm::SwitchInst	2012-03-11 06:09:17 +00:00
CodeGen	Add the ability to promote legal integer VAARGs. This is required for the PPC64 SVR4 ABI.	2012-03-24 03:53:52 +00:00
DebugInfo	More dead code removal (using -Wunreachable-code)	2012-01-20 21:51:11 +00:00
ExecutionEngine	Make it feasible for clients using EngineBuilder to capture the TargetMachine that is created as part of selecting the appropriate target.	2012-03-23 17:40:56 +00:00
Linker	It's possible for two types, which are isomorphic, to be added to the	2012-03-23 23:17:38 +00:00
MC	Add a hook in MCELFObjectTargetWriter to allow targets to sort relocation	2012-03-23 23:06:45 +00:00
Object	[Object/COFF]: Expose getSectionContents.	2012-03-19 20:27:37 +00:00
Support	Fix null to integer conversion warnings.	2012-03-24 22:17:50 +00:00
TableGen	Fix infinite loop in nested multiclasses.	2012-03-07 16:39:35 +00:00
Target	Fix small-integer VAARG on SVR4 ABI PPC64.	2012-03-24 03:53:55 +00:00
Transforms	Teach the function cloner (and thus the inliner) to simplify PHINodes	2012-03-25 10:34:54 +00:00
VMCore	Remove always true variable.	2012-03-24 20:02:25 +00:00
CMakeLists.txt	Move TableGen's parser and entry point into a library	2011-10-01 16:41:13 +00:00
LLVMBuild.txt	LLVMBuild: Introduce a common section which currently has a list of the	2011-12-12 22:45:54 +00:00
Makefile	Remove more of llvmc and dependencies.	2011-09-20 00:34:27 +00:00