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
da58c95cd3
Improve the accuracy of memdep for determining the dependencies of loads.
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This brings GVN to parity with GCSE+LoadVN.
llvm-svn: 40882
2007-08-06 23:26:03 +00:00
Owen Anderson
d617e4c963
Fix a bug that was causing several miscompilations on SPEC.
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llvm-svn: 40746
2007-08-02 17:56:05 +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
fff534d147
Use more caching when computing non-local dependence. This makes bzip2 not
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use up the entire 32-bit address space.
llvm-svn: 40596
2007-07-30 17:29:24 +00:00
Owen Anderson
ed3e63a203
Fix a bug introduced in my last commit.
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llvm-svn: 40542
2007-07-26 18:57:04 +00:00
Owen Anderson
f2b10d3de3
Fix a couple more bugs in the phi construction by pulling in code that does
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almost the same things from LCSSA.
llvm-svn: 40540
2007-07-26 18:26:51 +00:00
Owen Anderson
b215074820
Fix a bug in non-local memdep that was causing an infinite loop on 175.vpr.
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llvm-svn: 40495
2007-07-25 21:26:36 +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
3a92d35e62
When removing instructions from the analysis, be sure to check the confirmed
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flag when determining what to do with dependencies.
llvm-svn: 40079
2007-07-20 06:16:07 +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
b6211f5b50
Let MemoryDependenceAnalysis take care of updating AliasAnalysis.
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llvm-svn: 39769
2007-07-12 00:06:21 +00:00
Owen Anderson
bb0f7c00ab
Calculate the size of a array allocation correctly.
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llvm-svn: 38511
2007-07-10 20:48:38 +00:00
Owen Anderson
04b3497eb7
Fix a crasher when finding the dependency of a call.
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llvm-svn: 38510
2007-07-10 20:39:07 +00:00
Owen Anderson
b11a2f3a32
Make this pass registration static as well.
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llvm-svn: 38509
2007-07-10 20:21:08 +00:00
Owen Anderson
6c92149ce5
Handle vaarg instructions correctly.
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llvm-svn: 38504
2007-07-10 18:43:15 +00:00
Owen Anderson
f4bea94dbd
Volatile loads and stores depend on each other.
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llvm-svn: 38502
2007-07-10 18:11:42 +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
1bd416b823
Fix the build, and fix the handling of pointer sizes.
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llvm-svn: 38494
2007-07-10 17:25:03 +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
