Owen Anderson
e3de18ac1d
Fix several cache coherence bugs in MemDep/GVN that were found. Also add some (disabled) debugging code
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to make such problems easier to diagnose in the future, written by Duncan Sands.
llvm-svn: 44695
2007-12-08 01:37:09 +00:00
Owen Anderson
5454d4cbc9
Add a flag to mark a dirty cache entry. This is not yet used, but will eventually
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help non-local memdep caching.
llvm-svn: 42137
2007-09-19 16:13:57 +00:00
Owen Anderson
03cbda804e
Cache non-local memory dependence analysis. This is a significant compile
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time performance win in most cases.
llvm-svn: 41126
2007-08-16 21:27:05 +00:00
Owen Anderson
3eba1e8f5c
Make NonLocal and None const in the right way. :-)
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llvm-svn: 40961
2007-08-09 04:42:44 +00:00
Owen Anderson
24f6b332cb
Add one more comment.
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llvm-svn: 40949
2007-08-08 21:54:33 +00:00
Owen Anderson
f4aec9115f
Cleanup and comment-ize the memdep header.
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llvm-svn: 40948
2007-08-08 21:53:20 +00:00
Owen Anderson
f988c3ee5c
Change the None and NonLocal markers in memdep to be const.
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llvm-svn: 40946
2007-08-08 21:39:39 +00:00
Owen Anderson
d0c7aad800
Get rid of unnecessary #include.
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llvm-svn: 40885
2007-08-07 00:38:16 +00:00
Owen Anderson
22d94da65b
Clean up a bunch of caching stuff in memdep. This reduces the time to run GVN
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on 403.gcc from ~15s to ~10s.
llvm-svn: 40884
2007-08-07 00:33:45 +00:00
Owen Anderson
7028dfaf9d
Make non-local memdep not be recursive, and fix a bug on 403.gcc that this exposed.
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llvm-svn: 40692
2007-08-01 22:01:54 +00:00
David Greene
4251f42689
Fix GLIBCXX_DEBUG error owing to dereference of end iterator. There's
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no guarantee that an instruction returned by getDependency exists in
the maps.
llvm-svn: 40647
2007-07-31 20:01:27 +00:00
Owen Anderson
906d9d4a10
Forgot to include this file in my last commit.
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llvm-svn: 40496
2007-07-25 21:30:15 +00:00
Owen Anderson
6a1a8d05b8
Add basic support for performing whole-function RLE.
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Note: This has not yet been thoroughly tested. Use at your own risk.
llvm-svn: 40489
2007-07-25 19:57:03 +00:00
Owen Anderson
b9ad251288
Add initial support for non-local memory dependence analysis.
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NOTE: This has only been cursorily tested. Expected improvements soon.
llvm-svn: 40476
2007-07-24 21:52:37 +00:00
Owen Anderson
efc00e35cf
Add support for walking up memory def chains, which enables finding many more
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dead stores on 400.perlbench.
llvm-svn: 39929
2007-07-16 21:52:50 +00:00
Owen Anderson
1f5fb875b6
Add support for finding the dependencies of call and invoke instructions.
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llvm-svn: 38497
2007-07-10 17:59:22 +00:00
Owen Anderson
1fabbda503
Fix a bunch of things from Chris' feedback
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llvm-svn: 38493
2007-07-10 17:08:11 +00:00
Owen Anderson
23d5d3add4
A first stab at memory dependence analysis. This is an interface on top of
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alias analysis, adding caching and lazy computation of queries. This will
be used in planned improvements to memory access optimizations.
llvm-svn: 37958
2007-07-06 23:14:35 +00:00
