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Author SHA1 Message Date
Brian Gaeke
e7f4f73f67 Add clear() forwarding method. 
llvm-svn: 12580
 2004-03-31 22:43:12 +00:00
Chris Lattner
2e0755a058 Generate slightly smaller code, "test R, R" instead of "cmp R, 0" 
llvm-svn: 12579
 2004-03-31 22:22:36 +00:00
Chris Lattner
97e8b80649 The X86 backend no longer needs the select lowering pass. 
llvm-svn: 12578
 2004-03-31 22:03:46 +00:00
Chris Lattner
e5d60adc20 Codegen FP select instructions into X86 conditional moves. Annoyingly enough 
the X86 does not support a full set of fp cmove instructions, so we can't always
fold the condition into the select.  :(  Yuck.

llvm-svn: 12577
 2004-03-31 22:03:35 +00:00
Chris Lattner
d50df93168 Add support for floating point conditional move instructions 
llvm-svn: 12576
 2004-03-31 22:02:36 +00:00
Chris Lattner
4d543b4201 Add support for FP cmoves 
llvm-svn: 12575
 2004-03-31 22:02:21 +00:00
Chris Lattner
e4fa3010db Add FP conditional move instructions, which annoyingly have special properties 
that require the asmwriter to be extended (printing implicit uses before the
explicit operands)

llvm-svn: 12574
 2004-03-31 22:02:13 +00:00
Chris Lattner
6aaea5f86b Add warning 
llvm-svn: 12573
 2004-03-31 22:00:30 +00:00
Chris Lattner
bfe4dd0f90 MBB::remove should not modify the iterator passed in 
llvm-svn: 12572
 2004-03-31 21:59:59 +00:00
Chris Lattner
2cc4a29665 MachineBasicBlock::remove should not modify the iterator passed in 
llvm-svn: 12571
 2004-03-31 21:59:29 +00:00
Chris Lattner
34112aa99f Improve description, add warning 
llvm-svn: 12570
 2004-03-31 21:59:07 +00:00
Chris Lattner
3f24ea6ccf MachineBasicBlock::remove should not change the iterator passed into it 
llvm-svn: 12569
 2004-03-31 21:58:50 +00:00
Brian Gaeke
98c323dedd Factor out getStaticStackSize from InsertPrologCode(), so that I can more 
easily steal it for a separate use in the reoptimizer.

llvm-svn: 12568
 2004-03-31 20:58:37 +00:00
Brian Gaeke
4ca49f84ba Use the true, decoded name of the archive member in getObjectType. 
In ReadArchiveBuffer, make sure that MemberName is set in the case where
getObjectType would want to return SVR4LongFilename.

llvm-svn: 12567
 2004-03-31 19:51:00 +00:00
Chris Lattner
6ea8b0176c Avoid TRUE and FALSE which apparently conflict with some macros on OSX 
llvm-svn: 12566
 2004-03-31 03:49:47 +00:00
Chris Lattner
1c0ddbfb7d Fix linking of constant expr casts due to type resolution changes. With 
this and the other patches 253.perlbmk links again.

llvm-svn: 12565
 2004-03-31 02:58:28 +00:00
Chris Lattner
5a789b5e06 Add support for constant expr casts 
llvm-svn: 12564
 2004-03-31 02:56:11 +00:00
Chris Lattner
b9cadcfcd9 Add support for reading constantexpr select instructions 
llvm-svn: 12563
 2004-03-31 02:53:59 +00:00
Chris Lattner
1d78eb6094 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
45cb0b871d Correctly update LiveVariables when an instruction changes 
llvm-svn: 12561
 2004-03-30 22:44:39 +00:00
Chris Lattner
f477746a61 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
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