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Author SHA1 Message Date
Chris Lattner
beaf1cdb85 Test folding comparisons into select instructions 
llvm-svn: 12559
 2004-03-30 22:37:04 +00:00
Chris Lattner
399515cbfb New testcase. This now codegens to: 
max:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, DWORD PTR [%ESP + 8]
        cmp %EAX, %ECX
        cmovle %EAX, %ECX
        ret

Someone should really implement passing arguments through registers for
known-internal functions.  :)

llvm-svn: 12558
 2004-03-30 22:36:52 +00:00
Chris Lattner
6c1dd729d3 Implement spill code folding for all of the conditional move instructions 
llvm-svn: 12554
 2004-03-30 21:29:47 +00:00
Chris Lattner
ff016bd6fe Add direct support for integer select instructions, though we still don't support 
folding compares into the select yet.

llvm-svn: 12553
 2004-03-30 21:22:00 +00:00
Chris Lattner
83b4416593 New testcase for select instructions 
llvm-svn: 12552
 2004-03-30 21:21:14 +00:00
Chris Lattner
d265077f6d Fix bug: Assembler/2004-03-30-UnclosedFunctionCrash.llx 
llvm-svn: 12551
 2004-03-30 20:58:25 +00:00
Chris Lattner
f2d61c39d5 New testcase that crashes the assembler 
llvm-svn: 12550
 2004-03-30 20:58:00 +00:00
Chris Lattner
57968a98df Fix some serious bugs in the cmov descriptions, which didn't cause a problem because 
we never generated them

Make indentation a bit more consistent

llvm-svn: 12549
 2004-03-30 20:18:02 +00:00
Brian Gaeke
59c80cfd05 Start cleaning up this pass so that I can debug it. 
llvm-svn: 12548
 2004-03-30 19:53:46 +00:00
Chris Lattner
9527e2086b Oops, actually USE the previously computed value 
llvm-svn: 12547
 2004-03-30 19:45:39 +00:00
Chris Lattner
9289723307 Test general value/value selection which we can do now that we use the 
select instruction

llvm-svn: 12546
 2004-03-30 19:45:11 +00:00
Chris Lattner
145aea5c4c Now that all the code generators support the select instruction, and the instcombine 
pass can eliminate many nasty cases of them, start generating them in the optimizers

llvm-svn: 12545
 2004-03-30 19:44:05 +00:00
Chris Lattner
b6612acb18 Implement select.ll:test[3-6] 
llvm-svn: 12544
 2004-03-30 19:37:13 +00:00
Chris Lattner
66338ba1e9 Add some testcases for select simplification 
llvm-svn: 12543
 2004-03-30 19:36:54 +00:00
Chris Lattner
95942c021a Fix a fairly major performance problem. If a PHI node had a constant as 
an incoming value from a block, the selector would evaluate the constant
at the TOP of the block instead of at the end of the block.  This made the
live range for the constant span the entire block, increasing register
pressure needlessly.

llvm-svn: 12542
 2004-03-30 19:10:12 +00:00
Chris Lattner
87479998f2 Add the select lowering pass to get initial support for select instructions 
llvm-svn: 12541
 2004-03-30 18:41:59 +00:00
Chris Lattner
58a6a4d57a Add a simple select instruction lowering pass 
llvm-svn: 12540
 2004-03-30 18:41:10 +00:00
Chris Lattner
e78381e9f1 Add some new methods 
llvm-svn: 12539
 2004-03-30 00:20:08 +00:00
Brian Gaeke
610cfaa7fd Don't warn about a null live range if the Value is a ConstantIntegral. 
Otherwise, if you're in debugging mode, you get warnings for (apparently)
every immediate constant in the function during reg. allocation.

llvm-svn: 12538
 2004-03-29 21:58:41 +00:00
Brian Gaeke
27be9eb265 Change how the beginnings and ends of MachineFunctions are printed. Get 
rid of the funny cast.

llvm-svn: 12537
 2004-03-29 21:58:31 +00:00
Chris Lattner
dd7ed2912e Adjust to new itf 
llvm-svn: 12534
 2004-03-29 20:42:49 +00:00
Chris Lattner
0d39383456 Relax the interface a bit 
llvm-svn: 12533
 2004-03-29 20:42:38 +00:00
John Criswell
4fa1d309b2 Merged in RELEASE_12. 
llvm-svn: 12532
 2004-03-29 20:23:11 +00:00
John Criswell
f1690fc8cb Merged in RELEASE_12. 
This fixes the zlib linking problems.

llvm-svn: 12531
 2004-03-29 20:22:30 +00:00
Chris Lattner
50dc89f874 Handle -0.0 correctly 
llvm-svn: 12530
 2004-03-29 19:51:24 +00:00
Chris Lattner
8b1b8ab325 Add a faq entry 
llvm-svn: 12529
 2004-03-29 19:14:35 +00:00
Chris Lattner
7f5d56b43a Add a bunch of methods that should have been added a long time ago. 
llvm-svn: 12526
 2004-03-29 02:37:53 +00:00
Chris Lattner
27cbe8d690 Add another check 
llvm-svn: 12525
 2004-03-29 00:29:36 +00:00
Chris Lattner
44acd09520 Fix an assertion 
Contributed by Reid Spencer

llvm-svn: 12524
 2004-03-29 00:17:20 +00:00
Chris Lattner
874db50b32 Make error message a bit nicer. 
Contributed by Reid Spencer

llvm-svn: 12523
 2004-03-29 00:16:01 +00:00
Chris Lattner
b34cfff038 Add two methods which have been needed for a long time: Type::get(Un)signedVersion 
llvm-svn: 12522
 2004-03-26 21:43:22 +00:00
Chris Lattner
10669f3dc3 Make sure to get the headers from zlib correctly 
llvm-svn: 12521
 2004-03-26 17:04:53 +00:00
Chris Lattner
d191e5625c X % -1 == X % 1 == 0 
llvm-svn: 12520
 2004-03-26 16:11:24 +00:00
Chris Lattner
e15fb6ac61 Two changes: 
#1 is to unconditionally strip constantpointerrefs out of
instruction operands where they are absolutely pointless and inhibit
optimization.  GRRR!

#2 is to implement InstCombine/getelementptr_const.ll

llvm-svn: 12519
 2004-03-25 22:59:29 +00:00
Chris Lattner
41689f4073 New testcase 
llvm-svn: 12518
 2004-03-25 22:59:06 +00:00
Chris Lattner
ecb0efb6e5 Minor efficiency improvement, finegrainify namespacification 
llvm-svn: 12517
 2004-03-25 22:56:03 +00:00
Chris Lattner
570ec03866 Add note about setting up linux systems to directly execute LLVM bytecode files 
Fixes PR303

llvm-svn: 12516
 2004-03-25 20:38:40 +00:00
Chris Lattner
f3867b270c Hrm, we were leaking ~1M of garbage that valgrind never told us about because 
it was "reachable".  Cute.

llvm-svn: 12515
 2004-03-19 23:34:33 +00:00
Chris Lattner
a36db941d8 Add a dose of reality into the release notes 
llvm-svn: 12510
 2004-03-19 19:22:28 +00:00
Chris Lattner
078f97b50d Teach the optimizer to delete zero sized alloca's (but not mallocs!) 
llvm-svn: 12507
 2004-03-19 06:08:10 +00:00
Chris Lattner
ec8d5d563b New testcase, the optimizer can delete zero sized allocas 
llvm-svn: 12506
 2004-03-19 06:07:43 +00:00
Chris Lattner
eb5ced99d6 Perhaps the last bugfix before the release? HOPEFULLY! :) 
llvm-svn: 12505
 2004-03-19 04:26:04 +00:00
Chris Lattner
4e7ea3671c Fix PR299: [Sparc] Code generator asserts on alloc of zero size type 
llvm-svn: 12504
 2004-03-19 04:21:43 +00:00
Chris Lattner
b8f179cb9b Malloc doesn't kill a load. This patch need not go into 1.2 though. 
llvm-svn: 12500
 2004-03-18 17:01:26 +00:00
Chris Lattner
496071cbb6 Fix a minor wording bug in the manual 
llvm-svn: 12496
 2004-03-18 14:58:55 +00:00
Chris Lattner
1d4d74ac9a This is the last remaining bug that I know of in the loop extractor. The loop 
extractor has extracted hundreds of loops from the SPEC benchmarks without crashing
and without misoptimizing the programs.

This testcase could be reduced substantially more by hand, but I don't have time
to work on it right now.

llvm-svn: 12495
 2004-03-18 06:41:59 +00:00
Chris Lattner
ef7c1e9f7f Fix a really nasty bug that was breaking ijpeg in LLC mode. We were incorrectly 
folding load instructions into other instructions across free instruction
boundaries.  Perhaps this will also fix the other strange failures?

llvm-svn: 12494
 2004-03-18 06:29:54 +00:00
Chris Lattner
0f0a253571 Fix bug: CodeExtractor/2004-03-17-MissedLiveIns.ll 
With this fix we now successfully extract all 149 loops from 256.bzip2 without
crashing or miscompiling the program!

llvm-svn: 12493
 2004-03-18 05:56:32 +00:00
Chris Lattner
1ccb733f94 New testcase, reduced from 256.bzip2 
llvm-svn: 12492
 2004-03-18 05:55:29 +00:00
Chris Lattner
521d687d11 Add statistics to the loop extractor. The loop extractor has successfully 
extracted all 63 loops for Olden/bh without crashing and without
miscompiling the program!!!

llvm-svn: 12491
 2004-03-18 05:46:10 +00:00