external_llvm - external/llvm

	Commit message (Collapse)	Author	Age	Files	Lines
*	Allow null interference cursors to be queried.	Jakob Stoklund Olesen	2011-07-23	1	-1/+4
\| \| \| \| \| \|	They always report 'no interference'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135843 91177308-0d34-0410-b5e6-96231b3b80d8
*	Reapply r135121 with a fixed copy constructor.	Jakob Stoklund Olesen	2011-07-14	1	-3/+14
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Original commit message: Count references to interference cache entries. Each InterferenceCache::Cursor instance references a cache entry. A non-zero reference count guarantees that the entry won't be reused for a new register. This makes it possible to have multiple live cursors examining interference for different physregs. The total number of live cursors into a cache must be kept below InterferenceCache::getMaxCursors(). Code generation should be unaffected by this change, and it doesn't seem to affect the cache replacement strategy either. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135130 91177308-0d34-0410-b5e6-96231b3b80d8
*	Revert r135121 which broke a gcc-4.2 builder.	Jakob Stoklund Olesen	2011-07-14	1	-14/+3
\| \| \| \|	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135122 91177308-0d34-0410-b5e6-96231b3b80d8
*	Count references to interference cache entries.	Jakob Stoklund Olesen	2011-07-14	1	-3/+14
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Each InterferenceCache::Cursor instance references a cache entry. A non-zero reference count guarantees that the entry won't be reused for a new register. This makes it possible to have multiple live cursors examining interference for different physregs. The total number of live cursors into a cache must be kept below InterferenceCache::getMaxCursors(). Code generation should be unaffected by this change, and it doesn't seem to affect the cache replacement strategy either. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135121 91177308-0d34-0410-b5e6-96231b3b80d8
*	Precompute interference for neighbor blocks as long as there is no interference.	Jakob Stoklund Olesen	2011-04-09	1	-21/+32
\| \| \| \| \| \|	This doesn't require seeking in the live interval union, so it is very cheap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129187 91177308-0d34-0410-b5e6-96231b3b80d8
*	Avoid moving iterators when the previous block was just visited.	Jakob Stoklund Olesen	2011-04-07	1	-8/+13
\| \| \| \|	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129081 91177308-0d34-0410-b5e6-96231b3b80d8
*	Add an InterferenceCache class for caching per-block interference ranges.	Jakob Stoklund Olesen	2011-04-02	1	-0/+139
	When the greedy register allocator is splitting multiple global live ranges, it tends to look at the same interference data many times. The InterferenceCache class caches queries for unaltered LiveIntervalUnions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128764 91177308-0d34-0410-b5e6-96231b3b80d8