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32 Commits

Author SHA1 Message Date
Owen Anderson
9070cf6dea Add partial caching of non-local memory dependence queries. This provides a modest 
speedup for GVN.

llvm-svn: 42185
 2007-09-21 03:53:52 +00:00
Owen Anderson
5454d4cbc9 Add a flag to mark a dirty cache entry. This is not yet used, but will eventually 
help non-local memdep caching.

llvm-svn: 42137
 2007-09-19 16:13:57 +00:00
Owen Anderson
3a7df6cf67 Fix a typo in memdep, which was causing PR1648. 
llvm-svn: 41833
 2007-09-11 04:31:00 +00:00
Owen Anderson
ab8a978ed7 Remove an un-needed dependence query. This improves compile time marginally on 401.bzip2. 
llvm-svn: 41792
 2007-09-09 21:43:49 +00:00
Owen Anderson
03cbda804e Cache non-local memory dependence analysis. This is a significant compile 
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. :-) 
llvm-svn: 40961
 2007-08-09 04:42:44 +00:00
Owen Anderson
3db807751b Add more comments to memdep. 
llvm-svn: 40953
 2007-08-08 22:26:03 +00:00
Owen Anderson
d791c9f667 Make memdep fit in 80 cols. 
llvm-svn: 40950
 2007-08-08 22:01:54 +00:00
Owen Anderson
f988c3ee5c Change the None and NonLocal markers in memdep to be const. 
llvm-svn: 40946
 2007-08-08 21:39:39 +00:00
Owen Anderson
22d94da65b Clean up a bunch of caching stuff in memdep. This reduces the time to run GVN 
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. 
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. 
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. 
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 
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 
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. 
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 
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. 
llvm-svn: 40495
 2007-07-25 21:26:36 +00:00
Owen Anderson
6a1a8d05b8 Add basic support for performing whole-function RLE. 
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. 
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 
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 
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. 
llvm-svn: 39769
 2007-07-12 00:06:21 +00:00
Owen Anderson
bb0f7c00ab Calculate the size of a array allocation correctly. 
llvm-svn: 38511
 2007-07-10 20:48:38 +00:00
Owen Anderson
04b3497eb7 Fix a crasher when finding the dependency of a call. 
llvm-svn: 38510
 2007-07-10 20:39:07 +00:00
Owen Anderson
b11a2f3a32 Make this pass registration static as well. 
llvm-svn: 38509
 2007-07-10 20:21:08 +00:00
Owen Anderson
6c92149ce5 Handle vaarg instructions correctly. 
llvm-svn: 38504
 2007-07-10 18:43:15 +00:00
Owen Anderson
f4bea94dbd Volatile loads and stores depend on each other. 
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. 
llvm-svn: 38497
 2007-07-10 17:59:22 +00:00
Owen Anderson
1bd416b823 Fix the build, and fix the handling of pointer sizes. 
llvm-svn: 38494
 2007-07-10 17:25:03 +00:00
Owen Anderson
1fabbda503 Fix a bunch of things from Chris' feedback 
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 
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