Jakob Stoklund Olesen 708d06f7fb Add an interface for SplitKit complement spill modes. ... SplitKit always computes a complement live range to cover the places where the original live range was live, but no explicit region has been allocated. Currently, the complement live range is created to be as small as possible - it never overlaps any of the regions. This minimizes register pressure, but if the complement is going to be spilled anyway, that is not very important. The spiller will eliminate redundant spills, and hoist others by making the spill slot live range overlap some of the regions created by splitting. Stack slots are cheap. This patch adds the interface to enable spill modes in SplitKit. In spill mode, SplitKit will assume that the complement is going to spill, so it will allow it to overlap regions in order to avoid back-copies. By doing some of the spiller's work early, the complement live range becomes simpler. In some cases, it can become much simpler because no extra PHI-defs are required. This will speed up both splitting and spilling. This is only the interface to enable spill modes, no implementation yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139500 91177308-0d34-0410-b5e6-96231b3b80d8		2011-09-12 16:49:21 +00:00
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Analysis	Set NSW/NUW flags on SCEVAddExpr when the operation is flagged as	2011-09-10 01:09:50 +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	Add an interface for SplitKit complement spill modes.	2011-09-12 16:49:21 +00:00
CompilerDriver	Build CompilerDriver library.	2011-03-12 22:01:42 +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	Formatting and typo.	2011-09-08 22:17:40 +00:00
Object	Remove dead code.	2011-09-09 00:22:05 +00:00
Support	Add AMDIL as valid target triple to LLVM.	2011-08-29 15:44:55 +00:00
Target	Associate a MemOperand with LDWCP nodes introduced during ISel.	2011-09-12 14:43:23 +00:00
Transforms	[disable-iv-rewrite] Allow WidenIV to handle NSW/NUW operations	2011-09-10 01:24:17 +00:00
VMCore	Add codegen support for vector select (in the IR this means a select	2011-09-06 19:07:46 +00:00
CMakeLists.txt	Build CompilerDriver library.	2011-03-12 22:01:42 +00:00
Makefile