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142e22a5f4
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2100 Commits

Author SHA1 Message Date
Brian Gaeke
142e22a5f4 Add support for constant select expressions. Clarify the assertion failure msg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12613 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 17:52:29 +00:00
Alkis Evlogimenos
1a66731da8 Fix type in comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12611 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 16:02:50 +00:00
Alkis Evlogimenos
13ce339442 Fix type in instruction builder instantiation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12610 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 15:51:03 +00:00
Alkis Evlogimenos
8b28b6d187 Add more ADC and SBB variants 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12607 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 07:11:10 +00:00
Chris Lattner
6683dbf32e Add support for select constant expressions to the CBE, fixing SIOD 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12589 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-01 05:28:26 +00:00
Chris Lattner
0526f01fec Simplify code by using the more powerful BuildMI forms. 
Implement a small optimization.  In test/Regression/CodeGen/X86/select.ll,
we now generate this for foldSel3:

foldSel3:
        mov %AL, BYTE PTR [%ESP + 4]
        fld DWORD PTR [%ESP + 8]
        fld DWORD PTR [%ESP + 12]
        mov %EAX, DWORD PTR [%ESP + 16]
        mov %ECX, DWORD PTR [%ESP + 20]
        cmp %EAX, %ECX
        fxch %ST(1)
        fcmovae %ST(0), %ST(1)
***     fstp %ST(1)
        ret

Instead of:

foldSel3:
        mov %AL, BYTE PTR [%ESP + 4]
        fld DWORD PTR [%ESP + 8]
        fld DWORD PTR [%ESP + 12]
        mov %EAX, DWORD PTR [%ESP + 16]
        mov %ECX, DWORD PTR [%ESP + 20]
        cmp %EAX, %ECX
        fxch %ST(1)
        fcmovae %ST(0), %ST(1)
***     fxch %ST(1)
***     fstp %ST(0)
        ret

In practice, this only effects code size: performance should be basically
unaffected.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12588 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-01 04:06:09 +00:00
Chris Lattner
f1ac50ec53 Wrap at 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12587 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-01 04:03:27 +00:00
Chris Lattner
68626c2b30 Generate slightly smaller code, "test R, R" instead of "cmp R, 0" 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12579 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:22:36 +00:00
Chris Lattner
08bde1870a The X86 backend no longer needs the select lowering pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12578 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:03:46 +00:00
Chris Lattner
352eb48f8e 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12577 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:03:35 +00:00
Chris Lattner
c1bab32bc5 Add support for floating point conditional move instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12576 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:02:36 +00:00
Chris Lattner
30b2f72e7c Add support for FP cmoves 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12575 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:02:21 +00:00
Chris Lattner
1c54a85447 Add FP conditional move instructions, which annoyingly have special properties 
that require the asmwriter to be extended (printing implicit uses before the
explicit operands)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12574 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:02:13 +00:00
Chris Lattner
b4186e0ccd MBB::remove should not modify the iterator passed in 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12572 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 21:59:59 +00:00
Brian Gaeke
368c5da198 Factor out getStaticStackSize from InsertPrologCode(), so that I can more 
easily steal it for a separate use in the reoptimizer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12568 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 20:58:37 +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
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
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
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
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
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
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
Brian Gaeke
54cc3c2135 The .type directive on Solaris uses the # character instead of @. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12454 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:52:04 +00:00
Brian Gaeke
6d339f9000 Fix bug in zero-extending of shorts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12453 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:45:42 +00:00
Brian Gaeke
032f80fbf1 Add UMULrr and SMULrr instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12452 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:37:13 +00:00
Brian Gaeke
79db7405f7 Use ! for comment char; it works in both Solaris as and GAS. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12451 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:37:12 +00:00
Brian Gaeke
f57e364f65 Make getClass more robust by adding cLong. 
Add handling for Mul instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12450 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:37:11 +00:00
Alkis Evlogimenos
63dd4ff809 Add LAHF instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12424 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 17:20:14 +00:00
Alkis Evlogimenos
a1a7148c4d Another API change to MRegisterInfo::foldMemoryOperand. Instead of a 
MachineBasicBlock::iterator take a MachineInstr*.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12392 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-14 20:14:27 +00:00
Alkis Evlogimenos
39354c99a1 Change MRegisterInfo::foldMemoryOperand to return the folded 
instruction to make the API more flexible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12386 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-14 07:19:51 +00:00
Chris Lattner
5634b9f5e7 It helps if I save the file. :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12357 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-13 00:24:52 +00:00
Chris Lattner
317201d773 Rename the intrinsic enum values for llvm.va_* from Intrinsic::va_* to 
Intrinsic::va*.  This avoid conflicting with macros in the stdlib.h file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12356 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-13 00:24:00 +00:00
Brian Gaeke
215fb76865 Make -print-machineinstrs show us the code both before and after reg. alloc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12344 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-12 21:19:08 +00:00
Alkis Evlogimenos
a3f66842b2 Add support for a wider range of CMOV instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12336 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-12 17:59:56 +00:00
Chris Lattner
9f24a077bd ADd support for select instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12316 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-12 05:52:14 +00:00
Misha Brukman
b8bda13140 Move implementations of functions here, which avoids #including <cstdlib> in the 
header file and all those who #include it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12297 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-11 23:52:43 +00:00
Brian Gaeke
c760d647c6 Get rid of the abort in PhyRegAlloc::finishSavingState(). 
Make an explicit call to it from runOnFunction() if we know we're supposed to
write into the global. This is lame (esp. the const_cast), but it solves
the problem.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12291 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-11 19:46:30 +00:00
Brian Gaeke
c46f8a4f42 Give pass a name 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12290 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-11 19:23:15 +00:00
Misha Brukman
db760d00c3 Fix compilation on Sparc: assert(0) => abort() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12289 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-11 19:08:24 +00:00
Brian Gaeke
cf68bd5fc1 In PhyRegAlloc::saveState(), dump Arguments' saved-state, and try to 
make the output more compact.

Divorce state-saving from the doFinalization method; for some reason it's not
getting called when I want it to, at Reoptimizer time. Put the guts in
PhyRegAlloc::finishSavingState(). Put an abort() in it so that I can be really
really sure that it's getting called.

Update comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12286 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-11 06:45:52 +00:00
Brian Gaeke
36061dab06 Remove ghostly directory from the build 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12285 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-11 04:42:41 +00:00
Brian Gaeke
d1b3679214 Move all the SaveState options and stuff inton one spot at the top of the file. 
De-constify SaveStateToModule; we have to set both it and SaveRegAllocState
explicitly in the reoptimizer.
Make SaveRegAllocState an 'external location' option.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12278 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-10 22:21:03 +00:00
Brian Gaeke
14068d9f97 Only call verifySavedState if SaveRegAllocState is set AND debugging flag is on. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12277 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-10 22:01:59 +00:00
Alkis Evlogimenos
519f4e76b7 Check if printing of implicit uses is required for all types of shift 
instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12258 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-09 06:10:15 +00:00
Brian Gaeke
cf47198a49 Hmm, who left this sitting around in my tree 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12255 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-09 04:49:13 +00:00
Alkis Evlogimenos
cc2a2a530f Differentiate between extended precision floats (80-bit) and double precision floats (64-bit) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12254 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-09 03:37:54 +00:00
Alkis Evlogimenos
0309066f6c Use newly added API to emit bytes for instructions that gas misassembles 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12253 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-09 03:35:34 +00:00