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Author SHA1 Message Date
Chris Lattner
f535f6e808 Bail out earlier 
llvm-svn: 21786
 2005-05-08 21:33:47 +00:00
Chris Lattner
39f74def7f Teach reassociate that 0-X === X*-1 
llvm-svn: 21785
 2005-05-08 21:28:52 +00:00
Chris Lattner
0fb59cec82 new testcase 
llvm-svn: 21784
 2005-05-08 21:28:33 +00:00
Chris Lattner
319ac8f822 Fix PR557 and basictest[34].ll. 
This makes reassociate realize that loads should be treated as unmovable, and
gives distinct ranks to distinct values defined in the same basic block, allowing
reassociate to do its thing.

llvm-svn: 21783
 2005-05-08 20:57:04 +00:00
Chris Lattner
ab1fdcec7d new testcases for PR557 
llvm-svn: 21782
 2005-05-08 20:56:02 +00:00
Chris Lattner
b5de308c5f Add debugging information 
llvm-svn: 21781
 2005-05-08 20:09:57 +00:00
Chris Lattner
e74082156b eliminate gotos 
llvm-svn: 21780
 2005-05-08 19:48:43 +00:00
Chris Lattner
6d85b91b24 Wrap long lines. Fix "warning: conflicting types for built-in function 'memset'" 
warning from the CBE+GCC.

llvm-svn: 21779
 2005-05-08 19:46:29 +00:00
Chris Lattner
a9d5fdd4fd Improve reassociation handling of inverses, implementing inverses.ll. 
llvm-svn: 21778
 2005-05-08 18:59:37 +00:00
Chris Lattner
d7a835fcba new testcase 
llvm-svn: 21777
 2005-05-08 18:54:40 +00:00
Chris Lattner
afbdc0b969 clean up and modernize this pass. 
llvm-svn: 21776
 2005-05-08 18:45:26 +00:00
Chris Lattner
7b41539f32 Strength reduce SAR into SHR if there is no way sign bits could be shifted 
in.  This tends to get cases like this:

  X = cast ubyte to int
  Y = shr int X, ...

Tested by: shift.ll:test24

llvm-svn: 21775
 2005-05-08 17:34:56 +00:00
Chris Lattner
5fe4e982b8 new testcase 
llvm-svn: 21774
 2005-05-08 17:31:24 +00:00
Jeff Cohen
913578a3e1 Update my info 
llvm-svn: 21773
 2005-05-08 01:07:48 +00:00
Chris Lattner
c2670a0da6 Refactor some code 
llvm-svn: 21772
 2005-05-08 00:19:31 +00:00
Chris Lattner
cd7caaa866 Handle some simple cases where we can see that values get annihilated. 
llvm-svn: 21771
 2005-05-08 00:08:33 +00:00
Chris Lattner
1e84d885b7 Fix a miscompilation of crafty by clobbering the "A" variable. 
llvm-svn: 21770
 2005-05-07 23:49:08 +00:00
Chris Lattner
ae62d64e6c Move licm after reassociate, add some cond-propagate passes 
llvm-svn: 21769
 2005-05-07 22:45:35 +00:00
Chris Lattner
5662127ed6 Rewrite the guts of the reassociate pass to be more efficient and logical. Instead 
of trying to do local reassociation tweaks at each level, only process an expression
tree once (at its root).  This does not improve the reassociation pass in any real way.

llvm-svn: 21768
 2005-05-07 21:59:39 +00:00
Reid Spencer
bd4efef3eb * Break tests into individual cases so its easier to see what's going on. 
* Add four new cases to handle the new optimizations for strlen, dealing
  with:
    strlen(x) != 0 -> *x != 0
    strlen(x) == 0 -> *x == 0
  for each of two cases: strlen(x) != 0 and strlen(x) == 0

llvm-svn: 21767
 2005-05-07 20:21:04 +00:00
Reid Spencer
b4fdf14d34 * Add two strlen optimizations: 
strlen(x) != 0 -> *x != 0
    strlen(x) == 0 -> *x == 0
* Change nested statistics to use style of other LLVM statistics so that
  only the name of the optimization (simplify-libcalls) is used as the
  statistic name, and the description indicates which specific all is
  optimized. Cuts down on some redundancy and saves a few bytes of space.
* Make note of stpcpy optimization that could be done.

llvm-svn: 21766
 2005-05-07 20:15:59 +00:00
Reid Spencer
65d553cd03 Don't increment the counter unless the debug flag is set. 
llvm-svn: 21762
 2005-05-07 04:59:45 +00:00
Chris Lattner
3edf09a5eb Convert shifts to muls to assist reassociation. This implements 
Reassociate/shifttest.ll

llvm-svn: 21761
 2005-05-07 04:24:13 +00:00
Chris Lattner
e265bf6fe5 test that reassociate can handle shifts 
llvm-svn: 21760
 2005-05-07 04:23:29 +00:00
Chris Lattner
b1ea71fbcd Simplify the code and rearrange it. No major functionality changes here. 
llvm-svn: 21759
 2005-05-07 04:08:02 +00:00
Jeff Cohen
eafa15885e Silence VC++ warnings about unsafe mixing of ints and bools with the | operator. 
llvm-svn: 21758
 2005-05-07 02:44:04 +00:00
Chris Lattner
fc887cc3da add note about bit builtins newly supported 
llvm-svn: 21757
 2005-05-07 02:21:21 +00:00
Chris Lattner
d6906dc6af new testcase 
llvm-svn: 21756
 2005-05-07 02:16:08 +00:00
Chris Lattner
b25579d09b fix bugs in my previous commit clarify the return type of the bit ops 
llvm-svn: 21755
 2005-05-07 01:46:40 +00:00
Chris Lattner
069d6762aa add a couple of notes 
llvm-svn: 21754
 2005-05-06 23:08:23 +00:00
Chris Lattner
5ba10fa79c document calling convention extensions 
llvm-svn: 21753
 2005-05-06 22:57:40 +00:00
Chris Lattner
f6775e16bf remove some dead (always dynamically false) flags 
llvm-svn: 21752
 2005-05-06 22:35:09 +00:00
Chris Lattner
1f6d3b2344 encode calling conventions for call/invoke instructions. 
llvm-svn: 21751
 2005-05-06 22:34:01 +00:00
Chris Lattner
d1e76535b2 new testcase 
llvm-svn: 21750
 2005-05-06 22:33:44 +00:00
Chris Lattner
494f3da7b3 encode function calling convs in the bytecode file. invoke and call are 
still to come.

llvm-svn: 21749
 2005-05-06 20:42:57 +00:00
Chris Lattner
562734e130 parse new calling conv specifiers 
llvm-svn: 21748
 2005-05-06 20:27:19 +00:00
Chris Lattner
de5b492521 wrap a longline 
llvm-svn: 21747
 2005-05-06 20:27:03 +00:00
Chris Lattner
26a44493ef add support for explicit calling conventions 
llvm-svn: 21746
 2005-05-06 20:26:43 +00:00
Chris Lattner
d2dfcb3c0e Add support for explicit calling conventions 
llvm-svn: 21745
 2005-05-06 20:26:26 +00:00
Chris Lattner
b1952fe785 New file 
llvm-svn: 21744
 2005-05-06 19:59:08 +00:00
Chris Lattner
0995b3da02 use splice instead of remove/insert for a minor speedup 
llvm-svn: 21743
 2005-05-06 19:58:35 +00:00
Chris Lattner
146014b748 remove some ugly hacks that are no longer needed since andrew removed the 
varargs munging code

llvm-svn: 21742
 2005-05-06 19:49:51 +00:00
Chris Lattner
c9be572154 BAD typeo which caused many testsuite failures last night. Note to self, do 
not change code after testing it without retesting!

llvm-svn: 21741
 2005-05-06 17:13:16 +00:00
Chris Lattner
1bc2753d69 clean up the CBE output a bit 
llvm-svn: 21740
 2005-05-06 06:58:42 +00:00
Chris Lattner
f70b2785b7 add tail marker as a comment 
llvm-svn: 21739
 2005-05-06 06:53:07 +00:00
Chris Lattner
4e9d804f1d Make the stub functions be tail calls 
llvm-svn: 21738
 2005-05-06 06:48:54 +00:00
Chris Lattner
146447f57a Preserve tail marker 
llvm-svn: 21737
 2005-05-06 06:48:21 +00:00
Chris Lattner
0187977904 Implement Transforms/Inline/inline-tail.ll 
llvm-svn: 21736
 2005-05-06 06:47:52 +00:00
Chris Lattner
170a0f7d6b Make sure to not accidentally get a bogus tail marker 
llvm-svn: 21735
 2005-05-06 06:47:37 +00:00
Chris Lattner
3d4098b1e0 preserve the tail marker 
llvm-svn: 21734
 2005-05-06 06:46:58 +00:00