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11282 Commits

Author SHA1 Message Date
Chris Lattner b7897ce431 Fix a latent bug in select constantexpr handling that was broke 253.perlbmk 
llvm-svn: 12562
 2004-03-30 22:51:03 +00:00
Alkis Evlogimenos a333b1382f Correctly update LiveVariables when an instruction changes 
llvm-svn: 12561
 2004-03-30 22:44:39 +00:00
Chris Lattner 32817f5985 Fold comparisons into select instructions, making much better code and 
using our broad selection of movcc instructions.  :)

llvm-svn: 12560
 2004-03-30 22:39:09 +00:00
Chris Lattner 2dfdad631f Test folding comparisons into select instructions 
llvm-svn: 12559
 2004-03-30 22:37:04 +00:00
Chris Lattner f78f843adf 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 358c97e7ae Implement spill code folding for all of the conditional move instructions 
llvm-svn: 12554
 2004-03-30 21:29:47 +00:00
Chris Lattner 53b58cb854 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 b5d47a9420 New testcase for select instructions 
llvm-svn: 12552
 2004-03-30 21:21:14 +00:00
Chris Lattner deab5e212d Fix bug: Assembler/2004-03-30-UnclosedFunctionCrash.llx 
llvm-svn: 12551
 2004-03-30 20:58:25 +00:00
Chris Lattner 090516fe93 New testcase that crashes the assembler 
llvm-svn: 12550
 2004-03-30 20:58:00 +00:00
Chris Lattner 1563983d81 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 ef327be6ed Start cleaning up this pass so that I can debug it. 
llvm-svn: 12548
 2004-03-30 19:53:46 +00:00
Chris Lattner f17d2d33fb Oops, actually USE the previously computed value 
llvm-svn: 12547
 2004-03-30 19:45:39 +00:00
Chris Lattner fdf3202d69 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 81bdcb90ce 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 533bc49775 Implement select.ll:test[3-6] 
llvm-svn: 12544
 2004-03-30 19:37:13 +00:00
Chris Lattner b785d280ec Add some testcases for select simplification 
llvm-svn: 12543
 2004-03-30 19:36:54 +00:00
Chris Lattner 0048e574fb 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 1a0e9ac2f5 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 059f390257 Add a simple select instruction lowering pass 
llvm-svn: 12540
 2004-03-30 18:41:10 +00:00
Chris Lattner 55481f78d3 Add some new methods 
llvm-svn: 12539
 2004-03-30 00:20:08 +00:00
Brian Gaeke fd02378d3e 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 2fe0ac9ade 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 5152b9ed34 Adjust to new itf 
llvm-svn: 12534
 2004-03-29 20:42:49 +00:00
Chris Lattner 8582975b62 Relax the interface a bit 
llvm-svn: 12533
 2004-03-29 20:42:38 +00:00
John Criswell fa2f3686a3 Merged in RELEASE_12. 
llvm-svn: 12532
 2004-03-29 20:23:11 +00:00
John Criswell d2ff5cf7e8 Merged in RELEASE_12. 
This fixes the zlib linking problems.

llvm-svn: 12531
 2004-03-29 20:22:30 +00:00
Chris Lattner 3cdc27c868 Handle -0.0 correctly 
llvm-svn: 12530
 2004-03-29 19:51:24 +00:00
Chris Lattner 87d6b404b5 Add a faq entry 
llvm-svn: 12529
 2004-03-29 19:14:35 +00:00
Chris Lattner 817175f883 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 5f126b74d3 Add another check 
llvm-svn: 12525
 2004-03-29 00:29:36 +00:00
Chris Lattner 587a9f1416 Fix an assertion 
Contributed by Reid Spencer

llvm-svn: 12524
 2004-03-29 00:17:20 +00:00
Chris Lattner dd7ce6c31a Make error message a bit nicer. 
Contributed by Reid Spencer

llvm-svn: 12523
 2004-03-29 00:16:01 +00:00
Chris Lattner 04d6d9d606 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 3aa7b9d08c Make sure to get the headers from zlib correctly 
llvm-svn: 12521
 2004-03-26 17:04:53 +00:00
Chris Lattner 56b5051428 X % -1 == X % 1 == 0 
llvm-svn: 12520
 2004-03-26 16:11:24 +00:00
Chris Lattner 57c67b06e9 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 3932cab427 New testcase 
llvm-svn: 12518
 2004-03-25 22:59:06 +00:00
Chris Lattner 82d34eb470 Minor efficiency improvement, finegrainify namespacification 
llvm-svn: 12517
 2004-03-25 22:56:03 +00:00
Chris Lattner 998c0674be 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 3922d607a5 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 9e0b81c3e0 Add a dose of reality into the release notes 
llvm-svn: 12510
 2004-03-19 19:22:28 +00:00
Chris Lattner abb77c9959 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 597f1da506 New testcase, the optimizer can delete zero sized allocas 
llvm-svn: 12506
 2004-03-19 06:07:43 +00:00
Chris Lattner 91f297d4fe Perhaps the last bugfix before the release? HOPEFULLY! :) 
llvm-svn: 12505
 2004-03-19 04:26:04 +00:00
Chris Lattner ba6641d598 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 6ca9b89abb 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 0b41ebe65c Fix a minor wording bug in the manual 
llvm-svn: 12496
 2004-03-18 14:58:55 +00:00
Chris Lattner 211ae0bf05 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 dc47e27188 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