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Author SHA1 Message Date
Chris Lattner
f2fd4e185e new testcase 
llvm-svn: 39882
 2007-07-15 22:30:34 +00:00
Chris Lattner
f6a91d74e0 Implement shift-simplify.ll:test[45]. 
First teach instcombine that sign bit checks only demand the 
sign bit, this allows simplify demanded bits to hack on 
expressions better.

Second, teach instcombine that ashr is useless if only the
sign bit is demanded.

llvm-svn: 39880
 2007-07-15 20:54:51 +00:00
Chris Lattner
9cb8da1cb8 Implement shift-simplify.ll:test3, turning: 
(X << 31) <s 0  --> (X&1) != 0

This happens dozens of times in the CFE.

llvm-svn: 39879
 2007-07-15 20:42:37 +00:00
Nick Lewycky
701e227136 Clarify the language. Pointed out by Duncan Sands. 
llvm-svn: 39857
 2007-07-14 17:41:03 +00:00
Nick Lewycky
05e4170839 Fix the build. Patch from Holger Schurig. 
llvm-svn: 39856
 2007-07-14 15:11:14 +00:00
Anton Korobeynikov
5635277c36 Long live the exception handling! 
This patch fills the last necessary bits to enable exceptions
handling in LLVM. Currently only on x86-32/linux.

In fact, this patch adds necessary intrinsics (and their lowering) which
represent really weird target-specific gcc builtins used inside unwinder.

After corresponding llvm-gcc patch will land (easy) exceptions should be
more or less workable. However, exceptions handling support should not be 
thought as 'finished': I expect many small and not so small glitches
everywhere.

llvm-svn: 39855
 2007-07-14 14:06:15 +00:00
Nick Lewycky
93d39c53b6 Use maximal intersection algorithm exclusively. Fixes miscompile bug. 
llvm-svn: 39852
 2007-07-14 04:28:04 +00:00
Nick Lewycky
42e8a060a0 Add alternate ConstantRange intersection algorithm. 
llvm-svn: 39851
 2007-07-14 02:51:34 +00:00
Evan Cheng
bb0c0f7335 Added test case from PR1540. 
llvm-svn: 39845
 2007-07-13 23:57:33 +00:00
Devang Patel
9166ad7658 Make LCSSA a loop pass. 
llvm-svn: 39844
 2007-07-13 23:57:11 +00:00
Evan Cheng
260a390840 Fix for PR1540: Specify F0, F1 are sub-registers of D0, etc. 
llvm-svn: 39843
 2007-07-13 23:55:50 +00:00
Owen Anderson
9ade055c0f Handle GEPs with all-zero indices in the same way we handle pointer-pointer bitcasts. Also, fix a potentia infinite loop. 
This brings FastDSE to parity with old DSE on 175.vpr.

llvm-svn: 39839
 2007-07-13 22:50:48 +00:00
Devang Patel
cfdf3b6eff Disable claims to preserve analysis until open issues are resolved. 
llvm-svn: 39834
 2007-07-13 21:53:42 +00:00
Dan Gohman
48b2f7992b Eliminate an unused parameter. 
llvm-svn: 39828
 2007-07-13 20:16:50 +00:00
Dan Gohman
44771cf8e8 Fix the comment for LegalizeOp to more accurately reflect what it does. 
llvm-svn: 39827
 2007-07-13 20:14:11 +00:00
Chris Lattner
4db194d120 remove obsolete note 
llvm-svn: 39825
 2007-07-13 20:08:19 +00:00
Dan Gohman
1f4580ceb4 Don't call SimplifyVBinOp for non-vector operations, following earlier review 
feedback. This theoretically makes the common (scalar) case more efficient.

llvm-svn: 39823
 2007-07-13 20:03:40 +00:00
Chris Lattner
e19d21fc74 fix some bugs in the manual 
llvm-svn: 39822
 2007-07-13 20:01:46 +00:00
Owen Anderson
275a5ef481 Be more aggressive in removing dead stores, and in removing instructions trivially dead after DSE. 
This drastically improves the effect of FastDSE on kimwitu++.

llvm-svn: 39819
 2007-07-13 18:26:26 +00:00
Dale Johannesen
1a9d304c35 Modify previous patch per review comments. 
llvm-svn: 39817
 2007-07-13 17:31:29 +00:00
Dale Johannesen
469ed8e17e Skeleton of post-RA scheduler; doesn't do anything yet. 
Change name of -sched option and DEBUG_TYPE to
pre-RA-sched; adjust testcases.

llvm-svn: 39816
 2007-07-13 17:13:54 +00:00
Chris Lattner
7cba3578aa Fix CodeGen/Generic/print-arith-fp.ll on sparc (PR1551) 
llvm-svn: 39813
 2007-07-13 16:24:10 +00:00
Gabor Greif
8a0024300f these tests do not need a triple on Solaris. Thanks sabre! 
llvm-svn: 39803
 2007-07-13 10:08:18 +00:00
Reid Spencer
09aba24630 Regenerate to pick up Gabor's changes. 
llvm-svn: 39802
 2007-07-13 10:05:30 +00:00
Gabor Greif
63ef2849b2 * llvm.spec.in: update blurb 
* autoconf/AutoRegen.sh: use variables for autofoo versions
* autoconf/configure.ac: test for some more functions
                         that are not guaranteed on solaris

Note: the svn:mime-type of autoconf/AutoRegen.sh
      should be set to something that allows for
			text compares using svn diff
llvm-svn: 39800
 2007-07-13 09:48:29 +00:00
Owen Anderson
0ad3e0795b Reimplement removing stores to allocas at the end of a function. This should be safe now. 
llvm-svn: 39790
 2007-07-12 21:41:30 +00:00
Owen Anderson
999d27d563 Make the condition-checking for free with non-trivial dependencies more correct. 
llvm-svn: 39789
 2007-07-12 18:08:51 +00:00
Owen Anderson
6edb47d8be Remove the end-block handling code. It was unsafe, and making it safe would have resulted in falling back to the slow DSE case. I need to think some more about the right way to handle this. 
llvm-svn: 39788
 2007-07-12 17:52:20 +00:00
Dale Johannesen
eb2c2823e3 ARM: make branch folder remove unconditional branches 
following jump tables that it earlier inserted.  This
would be OK on other targets but is needed for correctness
only on ARM (constant islands needs to find jump tables).

llvm-svn: 39782
 2007-07-12 16:45:35 +00:00
Duncan Sands
b2a18dc10b The type ids making up a filter are unsigned, and 
should be output as unsigned values.  Checked against
gcc.

llvm-svn: 39775
 2007-07-12 13:51:39 +00:00
Gabor Greif
33f07df616 checked in as obvious, 
thanks Benoit Boissinot!

llvm-svn: 39774
 2007-07-12 13:31:38 +00:00
Gabor Greif
4f61fce837 fix the remaining 3 testcases that missed a target triple 
llvm-svn: 39773
 2007-07-12 13:21:08 +00:00
Chris Lattner
7eea439048 another missed SSE optimization 
llvm-svn: 39772
 2007-07-12 06:31:38 +00:00
Owen Anderson
b6211f5b50 Let MemoryDependenceAnalysis take care of updating AliasAnalysis. 
llvm-svn: 39769
 2007-07-12 00:06:21 +00:00
Devang Patel
9a299aa63a New test. 
llvm-svn: 39768
 2007-07-11 23:54:25 +00:00
Devang Patel
f26f0ea111 Preserve analysis info. 
llvm-svn: 39767
 2007-07-11 23:47:28 +00:00
David Greene
41a921b12c Get rid of annoying spaces. 
llvm-svn: 39766
 2007-07-11 23:44:08 +00:00
Bruno Cardoso Lopes
27f5beafb2 Added support for Mips specific GAS directives 
Fixed print immediate 
Fixed Identation on MipsISelDAGToDAG.cpp

llvm-svn: 39764
 2007-07-11 23:24:41 +00:00
Bruno Cardoso Lopes
e21704313d Added support for framepointer 
Prologue/Epilogue support fp,ra save/restore and use the stack frame the right
way!

llvm-svn: 39763
 2007-07-11 23:21:31 +00:00
Owen Anderson
733ff7bbc0 Handle the case where an entire structure is freed, and its dependency is a store to a field within 
that structure.

Also, refactor the runOnBasicBlock() function, splitting some of the special cases into separate functions.

llvm-svn: 39762
 2007-07-11 23:19:17 +00:00
Bruno Cardoso Lopes
0ba66ea1dc Now that stack is represented the right way, LOA starts at 0 
llvm-svn: 39761
 2007-07-11 23:17:41 +00:00
Bruno Cardoso Lopes
be14b3c16c Fixed AddLiveOut issues 
FI's created the write way to represent Mips stack

llvm-svn: 39760
 2007-07-11 23:16:16 +00:00
Bruno Cardoso Lopes
bc1b534410 Removed unused immediate PatLeaf, fixed lui instruction 
llvm-svn: 39759
 2007-07-11 22:47:02 +00:00
Bruno Cardoso Lopes
a851ed6989 Added MipsMachineFunction class, to hold Mips dinamic stack info when inserting Prologue/Epilog 
llvm-svn: 39758
 2007-07-11 22:44:21 +00:00
Owen Anderson
fb23f70dbf Add support for eliminate stores to stack-allocated memory locations at the end 
of a function.

llvm-svn: 39754
 2007-07-11 21:06:56 +00:00
Owen Anderson
2388e80b0a Handle eliminating stores that occur right before a free. 
llvm-svn: 39753
 2007-07-11 20:38:34 +00:00
Lauro Ramos Venancio
0ad4cde600 Handle packed structs in the CBackend. 
llvm-svn: 39752
 2007-07-11 19:56:53 +00:00
Anton Korobeynikov
035b1219d8 Emit correct linkage. Patch by Roman Samoilov. 
llvm-svn: 39751
 2007-07-11 19:51:06 +00:00
Evan Cheng
9f43f89d89 Add test case for PR1545. 
llvm-svn: 39749
 2007-07-11 19:29:05 +00:00
Evan Cheng
c7216b3a86 Missed a couple of places where new instructions are added due to spill / restore. 
llvm-svn: 39748
 2007-07-11 19:17:18 +00:00