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Author SHA1 Message Date
Alkis Evlogimenos
a8db01ac83 Correctly update LiveVariables when an instruction changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12561 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 22:44:39 +00:00
Chris Lattner
307ecbaddb Fold comparisons into select instructions, making much better code and 
using our broad selection of movcc instructions.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12560 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 22:39:09 +00:00
Chris Lattner
dd285eab68 Test folding comparisons into select instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12559 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 22:37:04 +00:00
Chris Lattner
5192676aa4 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.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12558 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 22:36:52 +00:00
Chris Lattner
87d3bb5dfa Implement spill code folding for all of the conditional move instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12554 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 21:29:47 +00:00
Chris Lattner
12d96a0b4d Add direct support for integer select instructions, though we still don't support 
folding compares into the select yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12553 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 21:22:00 +00:00
Chris Lattner
3b68c201c8 New testcase for select instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12552 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 21:21:14 +00:00
Chris Lattner
bc280abd46 Fix bug: Assembler/2004-03-30-UnclosedFunctionCrash.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12551 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 20:58:25 +00:00
Chris Lattner
982b2791cf New testcase that crashes the assembler 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12550 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 20:58:00 +00:00
Chris Lattner
a5cdab7101 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12549 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 20:18:02 +00:00
Brian Gaeke
87fa610ee0 Start cleaning up this pass so that I can debug it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12548 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:53:46 +00:00
Chris Lattner
4971b722ff Oops, actually USE the previously computed value 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12547 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:45:39 +00:00
Chris Lattner
5dd784a8ca Test general value/value selection which we can do now that we use the 
select instruction


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12546 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:45:11 +00:00
Chris Lattner
552112f2f8 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12545 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:44:05 +00:00
Chris Lattner
c32b30a429 Implement select.ll:test[3-6] 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12544 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:37:13 +00:00
Chris Lattner
6d0996866c Add some testcases for select simplification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12543 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:36:54 +00:00
Chris Lattner
6f2ab04e91 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12542 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:10:12 +00:00
Chris Lattner
5abd61f6d9 Add the select lowering pass to get initial support for select instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12541 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 18:41:59 +00:00
Chris Lattner
18bdbc3dda Add a simple select instruction lowering pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12540 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 18:41:10 +00:00
Chris Lattner
fc33d30446 Add some new methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12539 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 00:20:08 +00:00
Brian Gaeke
eb8863db90 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12538 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 21:58:41 +00:00
Brian Gaeke
47b716483e Change how the beginnings and ends of MachineFunctions are printed. Get 
rid of the funny cast.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12537 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 21:58:31 +00:00
Chris Lattner
db81395452 Adjust to new itf 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12534 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 20:42:49 +00:00
Chris Lattner
62fe9b59c1 Relax the interface a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12533 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 20:42:38 +00:00
John Criswell
d179961d40 Merged in RELEASE_12. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12532 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 20:23:11 +00:00
John Criswell
8130a38321 Merged in RELEASE_12. 
This fixes the zlib linking problems.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12531 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 20:22:30 +00:00
Chris Lattner
d25e3ecb3c Handle -0.0 correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12530 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 19:51:24 +00:00
Chris Lattner
c50bbc9613 Add a faq entry 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12529 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 19:14:35 +00:00
Chris Lattner
4dcb5401e4 Add a bunch of methods that should have been added a long time ago. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12526 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 02:37:53 +00:00
Chris Lattner
944cfafe76 Add another check 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12525 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 00:29:36 +00:00
Chris Lattner
e83593b2d3 Fix an assertion 
Contributed by Reid Spencer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12524 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 00:17:20 +00:00
Chris Lattner
11cad517a1 Make error message a bit nicer. 
Contributed by Reid Spencer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12523 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 00:16:01 +00:00
Chris Lattner
e3651f00e8 Add two methods which have been needed for a long time: Type::get(Un)signedVersion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12522 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-26 21:43:22 +00:00
Chris Lattner
40bdfe5554 Make sure to get the headers from zlib correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12521 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-26 17:04:53 +00:00
Chris Lattner
4df1b8aa26 X % -1 == X % 1 == 0 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12520 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-26 16:11:24 +00:00
Chris Lattner
ebd985cb87 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12519 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-25 22:59:29 +00:00
Chris Lattner
f6e59410ee New testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12518 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-25 22:59:06 +00:00
Chris Lattner
698c4a4bbb Minor efficiency improvement, finegrainify namespacification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12517 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-25 22:56:03 +00:00
Chris Lattner
a553f62738 Add note about setting up linux systems to directly execute LLVM bytecode files 
Fixes PR303


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12516 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-25 20:38:40 +00:00
Chris Lattner
e151259288 Hrm, we were leaking ~1M of garbage that valgrind never told us about because 
it was "reachable".  Cute.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12515 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 23:34:33 +00:00
Chris Lattner
6a39aa52f0 Add a dose of reality into the release notes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12510 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 19:22:28 +00:00
Chris Lattner
7c881dffc9 Teach the optimizer to delete zero sized alloca's (but not mallocs!) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12507 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 06:08:10 +00:00
Chris Lattner
f3fbddd333 New testcase, the optimizer can delete zero sized allocas 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12506 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 06:07:43 +00:00
Chris Lattner
76cddb08cb Perhaps the last bugfix before the release? HOPEFULLY! :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12505 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 04:26:04 +00:00
Chris Lattner
6b835360f1 Fix PR299: [Sparc] Code generator asserts on alloc of zero size type 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12504 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 04:21:43 +00:00
Chris Lattner
ab18020cbd Malloc doesn't kill a load. This patch need not go into 1.2 though. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12500 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 17:01:26 +00:00
Chris Lattner
d5fc4fcecf Fix a minor wording bug in the manual 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12496 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 14:58:55 +00:00
Chris Lattner
43aaf66a39 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12495 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 06:41:59 +00:00
Chris Lattner
85c84e759e 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?


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12494 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 06:29:54 +00:00
Chris Lattner
aa7ab53b99 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!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12493 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 05:56:32 +00:00