Jakob Stoklund Olesen aba6559370 Add an MRI::tracksLiveness() flag. ... Late optimization passes like branch folding and tail duplication can transform the machine code in a way that makes it expensive to keep the register liveness information up to date. There is a fuzzy line between register allocation and late scheduling where the liveness information degrades. The MRI::tracksLiveness() flag makes the line clear: While true, liveness information is accurate, and can be used for register scavenging. Once the flag is false, liveness information is not accurate, and can only be used as a hint. Late passes generally don't need the liveness information, but they will sometimes use the register scavenger to help update it. The scavenger enforces strict correctness, and we have to spend a lot of code to update register liveness that may never be used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153511 91177308-0d34-0410-b5e6-96231b3b80d8		2012-03-27 15:13:58 +00:00
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Analysis	SCEV fix: Handle loop invariant loads.	2012-03-26 22:33:59 +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 an MRI::tracksLiveness() flag.	2012-03-27 15:13:58 +00:00
DebugInfo	More dead code removal (using -Wunreachable-code)	2012-01-20 21:51:11 +00:00
ExecutionEngine	Made RuntimeDyldMachO support vanilla i386	2012-03-26 20:45:52 +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	Prune some includes	2012-03-27 07:54:11 +00:00
Object	[Object/COFF]: Expose getSectionContents.	2012-03-19 20:27:37 +00:00
Support	Fix GetMainExecutable on kFreeBSD.	2012-03-26 12:05:51 +00:00
TableGen	Fix infinite loop in nested multiclasses.	2012-03-07 16:39:35 +00:00
Target	Prune some includes	2012-03-27 07:54:11 +00:00
Transforms	Make a seemingly tiny change to the inliner and fix the generated code	2012-03-27 10:48:28 +00:00
VMCore	Add missing include of <new>	2012-03-26 14:04:17 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile