Quentin Colombet 230bb1b426 [RegAllocGreedy] Provide a flag to disable the local reassignment heuristic. ... By default, no functionality change. Before evicting a local variable, this heuristic tries to find another (set of) local(s) that can be reassigned to a free color. In some extreme cases (large basic blocks with tons of local variables), the compilation time is dominated by the local interference checks that this heuristic must perform, with no code gen gain. E.g., the motivating example takes 4 minutes to compile with this heuristic, 12 seconds without. Improving the situation will likely require to make drastic changes to the register allocator and/or the interference check framework. For now, provide this flag to better understand the impact of that heuristic. <rdar://problem/17444599> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212099 91177308-0d34-0410-b5e6-96231b3b80d8		2014-07-01 14:08:37 +00:00
..
Analysis	Suppress inlining when the block address is taken	2014-07-01 00:19:34 +00:00
AsmParser	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
Bitcode	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
CodeGen	[RegAllocGreedy] Provide a flag to disable the local reassignment heuristic.	2014-07-01 14:08:37 +00:00
DebugInfo	Revert "Introduce a string_ostream string builder facilty"	2014-06-26 22:52:05 +00:00
ExecutionEngine	ExecutionEngine::create(): fix interpreter fallback when JIT is unavailable	2014-07-01 03:18:49 +00:00
IR	Revert "DebugInfo: Ensure that all debug location scope chains from instructions within a function, lead to the function itself."	2014-07-01 04:11:45 +00:00
IRReader	IRReader: don't mark MemoryBuffers const	2014-06-27 09:19:14 +00:00
LineEditor
Linker	Include <tuple> to make buildbots happy	2014-06-27 18:38:12 +00:00
LTO	Use a range loop. No functionality change.	2014-06-28 18:44:59 +00:00
MC	Fix .seh_stackalloc 0	2014-07-01 00:42:47 +00:00
Object	Speculatively fix some code handling Power64 MachO files	2014-06-30 20:12:59 +00:00
Option	Revert "Introduce a string_ostream string builder facilty"	2014-06-26 22:52:05 +00:00
ProfileData	Renaming SwapByteOrder() to getSwappedBytes()	2014-06-14 11:36:01 +00:00
Support	Remove obsolete function TargetRegistry::getClosestTargetForJIT()	2014-07-01 10:47:13 +00:00
TableGen	Revert "Introduce a string_ostream string builder facilty"	2014-06-26 22:52:05 +00:00
Target	Fix .seh_stackalloc 0	2014-07-01 00:42:47 +00:00
Transforms	GlobalOpt: Handle non-zero offsets for aliases	2014-07-01 00:30:56 +00:00
CMakeLists.txt
LLVMBuild.txt
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