Jakob Stoklund Olesen ebac0c1747 Spill mode: Hoist back-copies locally. ... The leaveIntvAfter() function normally inserts a back-copy after the requested instruction, making the back-copy kill the live range. In spill mode, try to insert the back-copy before the last use instead. That means the last use becomes the kill instead of the back-copy. This lowers the register pressure because the last use can now redefine the same register it was reading. This will also improve compile time: The back-copy isn't a kill, so hoisting it in hoistCopiesForSize() won't force a recomputation of the source live range. Similarly, if the back-copy isn't hoisted by the splitter, the spiller will not attempt hoisting it locally. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139883 91177308-0d34-0410-b5e6-96231b3b80d8		2011-09-16 00:03:35 +00:00
..
Analysis	Add support to emit debug info for C++0x nullptr type.	2011-09-14 23:13:28 +00:00
Archive	Rewrite the CMake build to use explicit dependencies between libraries,	2011-07-29 00:14:25 +00:00
AsmParser	Auto upgrade the old EH scheme to use the new one. This is on a trial basis. If	2011-08-27 06:11:03 +00:00
Bitcode	Don't forget to add the landingpad and resume instructions to the InstructionList.	2011-09-01 00:50:20 +00:00
CodeGen	Spill mode: Hoist back-copies locally.	2011-09-16 00:03:35 +00:00
CompilerDriver
DebugInfo	DWARF: Reset the state after parsing a line table prologue and remove an unnecessary lookup.	2011-09-15 21:59:13 +00:00
ExecutionEngine	Fix the asserts in lib/Target/X86/X86ELFWriterInfo.cpp and	2011-09-10 01:42:07 +00:00
Linker	switch to the new struct api.	2011-08-12 18:07:26 +00:00
MC	Don't attach annotations to MCInst's. Instead, have the disassembler return, and the printer accept, an annotation string which can be passed through if the client cares about annotations.	2011-09-15 23:38:46 +00:00
Object	Object: make the following changes into SymbolRef	2011-09-14 01:22:52 +00:00
Support	use 64-bit types instead of off_t/size_t to avoid the issue when	2011-09-15 23:13:00 +00:00
Target	Remove incorrect comments.	2011-09-15 23:45:50 +00:00
Transforms	Reapply r139759. Disable IV rewriting by default. See PR10916.	2011-09-15 20:58:37 +00:00
VMCore	Add a check to make sure schedulePass() has not deleted stale RequiredPass.	2011-09-13 21:13:29 +00:00
CMakeLists.txt	Sketch out a DWARF parser.	2011-09-13 19:42:23 +00:00
Makefile	Sketch out a DWARF parser.	2011-09-13 19:42:23 +00:00