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37 Commits

Author SHA1 Message Date
Gabor Greif
d8a4dbb5da Rename the last test with .llx extension to .ll, resolve duplicate test by renaming to isnan2. Now that no test has llx ending there is no need to search for them from dg.exp too. 
llvm-svn: 51328
 2008-05-20 19:52:04 +00:00
Owen Anderson
f67c06279b Add a testcase for non-local CSE of read-only calls. 
llvm-svn: 51025
 2008-05-13 08:17:44 +00:00
Owen Anderson
15e930588a Add testcase for PR2213. 
llvm-svn: 49517
 2008-04-11 05:13:32 +00:00
Owen Anderson
ca7e0e21f3 Factor a bunch of functionality related to memcpy and memset transforms out of 
GVN and into its own pass.

llvm-svn: 49419
 2008-04-09 08:23:16 +00:00
Chris Lattner
12cecbbb25 add a testcase for forming memset from noncontiguous stores. 
llvm-svn: 48938
 2008-03-29 04:51:35 +00:00
Chris Lattner
97e4d98c2d apparently tclsh doesn't lex like bash. Weird. 
llvm-svn: 48732
 2008-03-24 17:41:57 +00:00
Chris Lattner
3a6d3372f5 pass the option so this test tests the right thing. 
llvm-svn: 48731
 2008-03-24 17:36:38 +00:00
Owen Anderson
2f91173e40 Use normal naming convention for test. 
llvm-svn: 48693
 2008-03-22 21:08:33 +00:00
Chris Lattner
16f62d36e8 implement an initial hack at a straight-line store -> memset optimization. 
This fires dozens of times across spec and multisource, but I don't know
if it actually speeds stuff up.  Hopefully the testers will show something
nice :)

llvm-svn: 48680
 2008-03-22 05:37:16 +00:00
Owen Anderson
6c2454d9d1 Fix a bug in GVN that Duncan noticed, where we potentially need to insert a 
pointer bitcast when performing return slot optimization.

llvm-svn: 48343
 2008-03-13 22:07:10 +00:00
Owen Anderson
5887233a3f Improve the return slot optimization to be both more aggressive (not limited to sret parameters), and 
safer (when the passed pointer might be invalid).  Thanks to Duncan and Chris for the idea behind this, 
and extra thanks to Duncan for helping me work out the trap-safety.

llvm-svn: 48280
 2008-03-12 07:37:44 +00:00
Owen Anderson
a39b18223f Add PR number to testcase. 
llvm-svn: 47640
 2008-02-26 23:16:11 +00:00
Owen Anderson
eadd074b22 Fix an issue where GVN had the sizes of the two memcpy's reverse, resulting 
in an invalid transformation.

llvm-svn: 47639
 2008-02-26 23:06:17 +00:00
Owen Anderson
6eafd532ab Fix an issue where GVN was performing the return slot optimization when it was 
not safe.  This is fixed by more aggressively checking that the return slot is
not used elsewhere in the function.

llvm-svn: 47544
 2008-02-25 04:08:09 +00:00
Owen Anderson
432abc0479 Fix an issue where GVN would try to use an instruction before its definition when performing return slot optimization. 
llvm-svn: 47541
 2008-02-25 00:40:41 +00:00
Chris Lattner
a6dc8aaa3f make this just a bit more strict. 
llvm-svn: 47274
 2008-02-18 17:33:10 +00:00
Owen Anderson
7b092ea631 Add support to GVN for performing sret return slot optimization. This means that, if an sret function tail calls 
another sret function, it should pass its own sret parameter to the tail callee, allowing it to fill in the correct
return value.  llvm-gcc does not emit this by default.  Instead, it allocates space in the caller for the sret of
the tail call and then uses memcpy to copy the result into the caller's sret parameter.  This optimization detects
and optimizes that case.

llvm-svn: 47265
 2008-02-18 09:24:53 +00:00
Nick Lewycky
12098ea401 Testcase for PR2032. 
llvm-svn: 47113
 2008-02-14 07:15:11 +00:00
Eli Friedman
cf6273d015 Add a note pointing to PR1996. 
llvm-svn: 47055
 2008-02-13 07:56:04 +00:00
Eli Friedman
75220639b6 Add test for PR1996. (This is my first time adding a test for a 
transform, so please review.)

llvm-svn: 47050
 2008-02-13 06:55:57 +00:00
Owen Anderson
274aa2846e Re-apply the patch to improve the optimizations of memcpy's, with several 
bugs fixed.  This now passes PPC bootstrap.

llvm-svn: 47026
 2008-02-12 21:15:18 +00:00
Bill Wendling
8a28ab4b1f Temporarily reverting: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20080128/057882.html

This is causing a miscompilation on PPC G5 and just now seeing it on iMac x86-64.

llvm-svn: 46822
 2008-02-06 20:03:07 +00:00
Owen Anderson
e2150dfe24 Make this test more aggressive, to cover recent improvements. 
llvm-svn: 46695
 2008-02-04 04:55:24 +00:00
Owen Anderson
aaba6f96da Allow GVN to hack on memcpy's, making them open to further optimization. 
llvm-svn: 46693
 2008-02-04 02:59:58 +00:00
Dan Gohman
794fa1f8f7 Convert tests using "| wc -l | grep ..." to use the count script. 
llvm-svn: 41097
 2007-08-15 13:36:28 +00:00
Owen Anderson
9c996b3212 Fix a failure I accidentally caused in my last commit by mishandling the 
removal of redundant phis.

llvm-svn: 40650
 2007-07-31 20:18:28 +00:00
Owen Anderson
d178c05c62 Fix a misoptimization in aha. 
llvm-svn: 40642
 2007-07-31 17:43:14 +00:00
Owen Anderson
a8d0a6ee40 Fix a bug caused by indiscriminantly asking for the dominators of a predecessor. 
llvm-svn: 40595
 2007-07-30 16:57:08 +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
ed75133924 Fix what is _hopefully_ the last corner case for loops. 
llvm-svn: 40503
 2007-07-25 23:54:42 +00:00
Owen Anderson
1e53615073 My last commit was not correct for nested loops. Fix it, and add a testcase for it. 
llvm-svn: 40498
 2007-07-25 22:19:40 +00:00
Owen Anderson
ce9d73dbe7 Fix an infinite loop on 300.twolf. 
llvm-svn: 40497
 2007-07-25 22:03:06 +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
522f7a7608 Fix a bug that was causing GVN to crash on 252.eon. 
llvm-svn: 40494
 2007-07-25 21:13:41 +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
eb9f1b612c Add a GVN pass, using the value numbering code I developed for GVNPRE and the 
load elimination code from RedundantLoadElimination.

llvm-svn: 40469
 2007-07-24 17:55:58 +00:00