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Author SHA1 Message Date
Evan Cheng
81a0382181 Live interval splitting: 
When a live interval is being spilled, rather than creating short, non-spillable
intervals for every def / use, split the interval at BB boundaries. That is, for
every BB where the live interval is defined or used, create a new interval that
covers all the defs and uses in the BB.

This is designed to eliminate one common problem: multiple reloads of the same
value in a single basic block. Note, it does *not* decrease the number of spills
since no copies are inserted so the split intervals are *connected* through
spill and reloads (or rematerialization). The newly created intervals can be
spilled again, in that case, since it does not span multiple basic blocks, it's
spilled in the usual manner. However, it can reuse the same stack slot as the
previously split interval.

This is currently controlled by -split-intervals-at-bb.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44198 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-17 00:40:40 +00:00
Evan Cheng
38b0be01de Shrinkfy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44197 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-17 00:31:16 +00:00
Evan Cheng
6542481a6d Typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44196 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-16 23:55:08 +00:00
Dale Johannesen
d81ae56fa2 Testcase from PR 1508 (although its's somewhat 
orthogonal to the main problem there)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44194 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-16 23:16:35 +00:00
Tanya Lattner
ee22be064e Fix for PR1801 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44193 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-16 22:44:50 +00:00
Anton Korobeynikov
be6fe28f75 These were implemented 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44189 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-16 11:12:01 +00:00
Chris Lattner
a7d1ab0ab3 Fix PR1800 by correcting mistaken logic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44188 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-16 06:04:17 +00:00
Chris Lattner
b763228695 fix a typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44187 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-16 05:32:05 +00:00
Anton Korobeynikov
45b22fa9f1 Implement codegen for flt_rounds on x86 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44183 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-16 01:31:51 +00:00
Anton Korobeynikov
917c2a6ff2 Implement necessary bits for flt_rounds gcc builtin. 
Codegen bits and llvm-gcc support will follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44182 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 23:25:33 +00:00
Nate Begeman
5db1afb462 Basic non-power-of-2 vector support 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44181 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 21:15:26 +00:00
Anton Korobeynikov
4e1a0e386c Reverted r44163 per request 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44177 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 18:33:16 +00:00
Daniel Berlin
07268172ff Fix bugs in iterator invalidation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44174 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 18:06:49 +00:00
Duncan Sands
560a737e07 This assertion was bogus. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44167 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 09:54:37 +00:00
Evan Cheng
5d446265c7 Fix a thinko in post-allocation coalescer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44166 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 08:13:29 +00:00
Nick Lewycky
65e2da3b4d Fix handling of overflow in loop calculation by adding new UDiv SCEV. This SCEV 
is disabled in the sense that it will refuse to create one from a UDiv
instruction, until the code is better tested.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44163 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 06:30:50 +00:00
Chris Lattner
701bc4264d Fix PR1788 by taking the approach suggested by Richard Smith. 
Thanks to him for his detailed analysis of the problem.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44162 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 06:10:55 +00:00
Chris Lattner
ab64806af2 Import the boost scoped_ptr class to LLVM. This patch was prepared by 
Cédric Venet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44161 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 05:57:06 +00:00
Owen Anderson
44a95e06cc More templatization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44158 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 05:00:15 +00:00
Chris Lattner
b7e6b1ab70 many edits, patch by Kelly Wilson! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44157 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 04:51:31 +00:00
Bill Wendling
5b8318a1a4 Adding debug output during coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44154 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 02:06:30 +00:00
Bill Wendling
87075caa18 Need to increment the iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44153 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 00:40:48 +00:00
Ted Kremenek
7c6ad0c06e Fixed serious bug in BatchReadOwnedPtrs where in a chain of calls to 
deserialize objects if BatchReadOwnedPtrs was called more than once in the
same call chain then the second call would overwrite the SerializedPtrIDs
being used by the first call. Solved this problem by making the vector that
holds the pointer IDs local to a function call. Now BatchReadOwnedPtrs is
reentrant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44152 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 00:05:03 +00:00
Duncan Sands
c455ebeb0c I discover array_lengthof, thanks to gabor on #llvm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44139 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 21:58:02 +00:00
Duncan Sands
f04d584cae Tweak the descriptions of the new 'const' and 'pure' attributes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44132 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 21:14:02 +00:00
Evan Cheng
e40740bd8c Oops. Debugging code shouldn't have been checked in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44128 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 19:08:32 +00:00
Ted Kremenek
233b60eced Removed debug #define that was accidentally checked in while debugging 
the deserializer.

Fixed assertion when "stream jumping" in the deserializer to properly function
when we have reached the end of the stream.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44124 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 17:42:09 +00:00
Duncan Sands
0a4f91ea18 Simplify the attribute verification code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44116 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 14:02:11 +00:00
Duncan Sands
7e9ab25a85 Un XFAIL these tests, now that Bill has backported 
the fix from 4.2.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44115 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 13:40:53 +00:00
Anton Korobeynikov
e925df7f02 Document pure/const parameter attributes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44111 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 10:30:13 +00:00
Anton Korobeynikov
b9b977d41e Regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44110 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 09:53:48 +00:00
Anton Korobeynikov
0adb7b41e7 Add pure/const attributes. Documentation will follow. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44109 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 09:52:30 +00:00
Anton Korobeynikov
9de1934099 Fix PIC jump table codegen on x86-32/linux. In fact, such thing should be applied 
to all targets uses GOT-relative offsets for PIC (Alpha?)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44108 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 09:18:41 +00:00
Duncan Sands
87b665d3de Eliminate the recently introduced CCAssignToStackABISizeAlign 
in favour of teaching CCAssignToStack that size 0 and/or align
0 means to use the ABI values.  This seems a neater solution.
It is safe since no legal value type has size 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44107 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 08:29:13 +00:00
Ted Kremenek
38afd9e3ac Added two new overloaded versions of BatchEmitOwnedPtrs and 
BatchReadOwnedPtrs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44105 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 08:05:03 +00:00
Evan Cheng
c498b0281f Clean up sub-register implementation by moving subReg information back to 
MachineOperand auxInfo. Previous clunky implementation uses an external map
to track sub-register uses. That works because register allocator uses
a new virtual register for each spilled use. With interval splitting (coming
soon), we may have multiple uses of the same register some of which are
of using different sub-registers from others. It's too fragile to constantly
update the information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44104 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 07:59:08 +00:00
Duncan Sands
f9572a4c2b XFAIL these tests until the fix gets backported 
from llvm-gcc-4.2 to 4.0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44103 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 07:42:50 +00:00
Chris Lattner
c2bb123823 Document a limitation, patch contributed by George Russell 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44102 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 07:04:44 +00:00
Nick Lewycky
6fa98b1320 Allow the block extractor take to take a list of basic blocks to not extract 
from a file containing Function/BasicBlock pairings. This is not safe against
anonymous or abnormally-named Funcs or BBs.

Make bugpoint use this interface to pass the BBs list to the child bugpoint.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44101 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 06:47:06 +00:00
Chris Lattner
1b12d8855d Implement PR1796 and Transforms/SimplifyCFG/noreturn-call.ll 
by inserting unreachable after no-return calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44099 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 06:19:25 +00:00
Owen Anderson
019b92a70c Start the process of making MachineLoopInfo possible by templating Loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44097 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 02:33:58 +00:00
Hartmut Kaiser
ffb15de60e Fixed a compilation error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44083 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 23:04:28 +00:00
Hartmut Kaiser
729bd28f62 Fixed a strange construct. Please review. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44082 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 23:04:06 +00:00
Hartmut Kaiser
ea966dda1b Updated VC++ build system 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44081 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 23:03:32 +00:00
Chris Lattner
19450241e5 Fix the regression on Transforms/GlobalOpt/deadglobal-2.ll from my 
patch on friday.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44068 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 21:46:23 +00:00
Chris Lattner
59ab338882 upgrade test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44067 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 21:42:48 +00:00
Owen Anderson
42f9e96e97 Run computeDomForest() on the set of registers that need to be tested for 
interference.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44064 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 20:13:24 +00:00
Owen Anderson
17b1418bea Preserve LiveVariables when doing critical edge splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44063 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 20:04:45 +00:00
Owen Anderson
660c5b9514 Wow. I definitely shouldn't write code when I'm tird. 
Make my previous patch actually do what it was intended to do.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44061 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 19:56:28 +00:00
Dale Johannesen
b1d40d9dd7 Revert previous; these files aren't ready to go in yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44057 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 19:16:02 +00:00