Jakob Stoklund Olesen 8879480ed7 Sketch a LiveRegMatrix analysis pass. ... The LiveRegMatrix represents the live range of assigned virtual registers in a Live interval union per register unit. This is not fundamentally different from the interference tracking in RegAllocBase that both RABasic and RAGreedy use. The important differences are: - LiveRegMatrix tracks interference per register unit instead of per physical register. This makes interference checks cheaper and assignments slightly more expensive. For example, the ARM D7 reigster has 24 aliases, so we would check 24 physregs before assigning to one. With unit-based interference, we check 2 units before assigning to 2 units. - LiveRegMatrix caches regmask interference checks. That is currently duplicated functionality in RABasic and RAGreedy. - LiveRegMatrix is a pass which makes it possible to insert target-dependent passes between register allocation and rewriting. Such passes could tweak the register assignments with interference checking support from LiveRegMatrix. Eventually, RABasic and RAGreedy will be switched to LiveRegMatrix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158255 91177308-0d34-0410-b5e6-96231b3b80d8		2012-06-09 02:13:10 +00:00
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Analysis	Round 2 of dead private variable removal.	2012-06-06 19:47:08 +00:00
Archive
AsmParser
Bitcode
CodeGen	Sketch a LiveRegMatrix analysis pass.	2012-06-09 02:13:10 +00:00
DebugInfo
ExecutionEngine	Round 2 of dead private variable removal.	2012-06-06 19:47:08 +00:00
Linker
MC	Add accessors for all private members of DisasmContext.	2012-06-06 20:45:10 +00:00
Object	Convert comments to proper Doxygen comments.	2012-06-09 00:01:45 +00:00
Support	Convert comments to proper Doxygen comments.	2012-06-09 00:01:45 +00:00
TableGen
Target	Test commit	2012-06-09 00:27:55 +00:00
Transforms	Convert comments to proper Doxygen comments.	2012-06-09 00:01:45 +00:00
VMCore
CMakeLists.txt
LLVMBuild.txt
Makefile