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Author SHA1 Message Date
Jakob Stoklund Olesen
3c7b3fecac Remove the now unused LiveIntervals::getVNInfoSourceReg(). 
This method was always a bit too simplistic for the real world. It didn't really
deal with subregisters and such.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106781 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 20:18:15 +00:00
Jakob Stoklund Olesen
c0490ac915 Teach AdjustCopiesBackFrom to also use CoalescerPair to identify compatible copies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106780 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 20:16:00 +00:00
Dale Johannesen
e5ff9ef195 Disallow matching "i" constraint to symbol addresses when 
address requires a register or secondary load to compute
(most PIC modes).  This improves "g" constraint handling.  8015842.

The test from 2007 is attempting to test the fix for PR1761,
but since -relocation-model=static doesn't work on Darwin
x86-64, it was not testing what it was supposed to be testing
and was passing erroneously.  Fixed to use Linux x86-64.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106779 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 20:14:51 +00:00
Eric Christopher
dd6f86a28f Silence some unused variable warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106778 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 20:14:34 +00:00
Jakob Stoklund Olesen
54edf4f7da Remove the -fast-spill option. 
This code path has never really been used, and we are going to be handling
spilling through the Spiller interface in the future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106777 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 19:56:08 +00:00
Dan Gohman
3f43dc3687 Document problems that I encountered when working on -scev-aa. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106776 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 19:34:03 +00:00
Evan Cheng
8acf67672b Oops. IT block formation pass needs to be run at any optimization level. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106775 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 19:10:14 +00:00
Bill Wendling
efbf306107 Loosen up the requirements in the Horrible Hack(tm) to include all selectors 
which don't have a catch-all associated with them not just clean-ups. This fixes
the SingleSource/Benchmarks/Shootout-C++/except.cpp testcase that broke because
of my change r105902.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106772 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 18:49:10 +00:00
Eli Friedman
761fa7af9e Always allow Thumb-2 SXTB, SXTH, UXTB, and UXTH. Fixes PR7324. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106770 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 18:20:04 +00:00
Jakob Stoklund Olesen
a24986d8bf Replace a big gob of old coalescer logic with the new CoalescerPair class. 
CoalescerPair can determine if a copy can be coalesced, and which register gets
merged away. The old logic in SimpleRegisterCoalescing had evolved into
something a bit too convoluted.

This second attempt fixes some crashes that only occurred Linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106769 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 18:15:01 +00:00
Dan Gohman
fc33a3099e Add an exports file for the Hello example plugin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106768 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 17:36:51 +00:00
Jakob Stoklund Olesen
eec418d26f Print the LSBs of a SlotIndex symbolically using letters referring to the 
[L]oad, [u]se, [d]ef, or [S]tore slots.

This makes it easier to see if two indices refer to the same instruction,
avoiding mental mod 4 calculations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106766 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 17:31:07 +00:00
Dan Gohman
deca052d9d Simplify this code; switch lowering shouldn't produce cases 
which trivially fold away.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106765 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 17:08:31 +00:00
Dan Gohman
2ea09e0546 A few minor micro-optimizations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106764 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:57:52 +00:00
Dan Gohman
d42819a07b Teach getExactSDiv to evaluate x/1 to x up front, as it's a common 
enough special case, and it theoretically allows more folding because
it works even when x is unanalyzable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106763 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:51:25 +00:00
Bob Wilson
789fef987f PR7458: Try commuting Thumb2 instruction operands to put them into 2-address 
form so they can be narrowed to 16-bit instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106762 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:50:20 +00:00
Bob Wilson
f0e1b89421 Edit and clarify comments for TargetInstrInfo methods: 
None of the existing implementations of commuteInstruction create new
instructions unless the NewMI parameter is true, but the comment had
implied otherwise.

findCommutedOpIndices returns false, not true, when it doesn't know
how to commute the instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106761 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:48:26 +00:00
Dan Gohman
eaf6cf28dd Don't try to preserve pointer types in SCEVConstants; the old code 
was over-complicated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106760 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:47:03 +00:00
Dan Gohman
473e63512a Fix copy+pasto issues in isMulSExtable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106759 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:45:11 +00:00
Dan Gohman
1faa88280e Make the trunc code consistent with the zext and sext code in its 
handling of pointer types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106757 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:33:38 +00:00
Dan Gohman
27da66db3e Add a comment about a thread safety issue in Statistic.h. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106756 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:31:32 +00:00
Dan Gohman
60e6f3d412 Add overloads for getFile and getFileOrSTDIN which take a const char * 
instead of a StringRef, avoiding the need to copy the string in the
common case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106754 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:25:50 +00:00
Jakob Stoklund Olesen
8df08017d8 Be more strict about subreg-to-subreg copies in CoalescerPair. 
Also keep track of the original DstREg before subregister adjustments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106753 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:19:28 +00:00
Gabor Greif
caf70b31b0 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106752 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:11:44 +00:00
Jakob Stoklund Olesen
af5c60b40d Verify that VNI kills are pointing to existing instructions. 
In this case it is essential that the kill is real because the spiller will
decide to omit a spill if it thinks there is a later kill.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106751 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 15:56:59 +00:00
Gabor Greif
2f1ab74e76 use (even more, still) ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106750 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 15:51:11 +00:00
Dan Gohman
ee1c870778 Eliminate the other half of the BRCOND optimization, and update 
as many tests as possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106749 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 15:24:03 +00:00
Dan Gohman
102f3851bb Eliminate the first have of the optimization which eliminates BRCOND 
when the condition is constant. This optimization shouldn't be
necessary, because codegen shouldn't be able to find dead control
paths that the IR-level optimizer can't find. And it's undesirable,
because it encourages bugpoint to leave "br i1 false" branches
in its output. And it wasn't updating the CFG.

I updated all the tests I could, but some tests are too reduced
and I wasn't able to meaningfully preserve them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106748 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 15:04:11 +00:00
Gabor Greif
9e4f243de7 use ArgOperand API and CallSite for arg range; add necessary casts and perform some cosmetics 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106747 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 14:42:01 +00:00
Dan Gohman
4e39e9da0f Reapply r106634, now that the bug it exposed is fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106746 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 14:30:44 +00:00
Gabor Greif
fef8c4eb54 use ArgOperand API and CallSite for arg range 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106745 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 14:13:36 +00:00
Gabor Greif
bcda85c743 use (even more) ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106744 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 13:54:33 +00:00
Gabor Greif
c310fcc909 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106743 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 13:42:49 +00:00
Gabor Greif
cea7ac7c01 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106740 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 12:58:35 +00:00
Gabor Greif
3e84e2e90f use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106737 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 12:35:13 +00:00
Gabor Greif
916973706d use ArgOperand API, also tighten the type of visitFree to make this work out smoothly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106736 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 12:21:15 +00:00
Gabor Greif
3ccbb22eaf use ArgOperand API; introduce downcasted pointers into scope to facilitate this 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106734 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 12:03:56 +00:00
Gabor Greif
aee5dc1939 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106731 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 10:42:46 +00:00
Gabor Greif
d883a9d1ed use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106730 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 10:17:17 +00:00
Gabor Greif
0a14be0693 use callsite to obtain all arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106729 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 10:04:07 +00:00
Gabor Greif
aeff385e3e use callsite to obtain all arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106728 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 09:56:43 +00:00
Chris Lattner
645b209c4a Teach the x86 mc assembler that %dr6 = %db6, this implements 
rdar://8013734


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106725 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 07:29:18 +00:00
Chris Lattner
adabe1a92c more cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106724 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 07:18:14 +00:00
Chris Lattner
02758a44e4 reduce indentation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106723 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 07:16:25 +00:00
Chris Lattner
f8cbde46fb fix breakage from r98938 by correctly marking msp430 calls as variadic. 
Patch by Ben Ransford!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106722 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 06:46:50 +00:00
Dan Gohman
6b13cbca61 Fix a bug in the code which determines when it's safe to use the 
bt instruction, which was exposed by r106263.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106718 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 02:07:59 +00:00
Eric Christopher
37106afe02 Add a couple more quick comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106717 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 02:07:57 +00:00
Dan Gohman
8e0163ac1e Optimize the "bit test" code path for switch lowering in the 
case where the bit mask has exactly one bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106716 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 02:06:24 +00:00
Jakob Stoklund Olesen
b8ac3b035b Revert "Replace a big gob of old coalescer logic with the new CoalescerPair class." 
Whiny buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106710 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 00:52:22 +00:00
Gabor Greif
407014f9a5 use getNumArgOperands 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106709 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 00:48:48 +00:00