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Author SHA1 Message Date
Dan Gohman
a0b50d7f0d Comment fixes, and make Schedule() pure virtual. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52658 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-24 00:02:44 +00:00
Dan Gohman
51cd9d6e07 A brief survey of priority_queue usage in the tree turned this up 
as a questionable case, but the code isn't actually needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52657 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 23:51:16 +00:00
Dan Gohman
caf746aa5a Add a clear() method to PriorityQueue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52656 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 23:47:46 +00:00
Bill Wendling
ebcba612b5 This situation can occur: 
,------.
    |      |
    |      v
    |   t2 = phi ... t1 ...
    |      |
    |      v
    |   t1 = ...
    |  ... = ... t1 ...
    |      |
    `------'

where there is a use in a PHI node that's a predecessor to the defining
block. We don't want to mark all predecessors as having the value "alive" in
this case. Also, the assert was too restrictive and didn't handle this case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52655 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 23:41:14 +00:00
Dan Gohman
aabdded3b4 Use the new PriorityQueue in ScheduleDAGList too, which also 
needs arbitrary-element removal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52654 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 23:40:09 +00:00
Owen Anderson
72e04099c6 Add getScaledIntervalSize, which gives a measure of the size of an interval that is independent of the scaling of 
the function due to empty index slots.  This is suitable for use in backend heuristics that need to reason about the density
of an interval.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52652 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 23:25:37 +00:00
Dan Gohman
cb41e6bf52 Use use_empty() instead of getNumUses(), avoiding a use list traversal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52651 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 23:23:49 +00:00
Owen Anderson
b3db9c90d2 Use getMBBEndIdx rather than assuming that the end is right after the last instruction in the block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52649 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 22:12:23 +00:00
Dan Gohman
73b43b9b54 Fix spelling and grammar in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52648 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 22:11:52 +00:00
Bill Wendling
8d3f36f05c Extract the x86_64 part for the executables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52647 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 22:08:30 +00:00
Dan Gohman
2904538fc3 Simplify erase_one slightly. It's not necessary to preserve 
the value of the element to be erased while the heap is
being updated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52646 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:46:21 +00:00
Dan Gohman
55e283c71e Revamp the loop unroller, extending it to correctly update PHI nodes 
in the presence of out-of-loop users of in-loop values and the trip
count is not a known multiple of the unroll count, and to be a bit
simpler overall. This fixes PR2253.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52645 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:29:41 +00:00
Evan Cheng
d17e44769f Remove option used to debug stack coloring bugs. It's no longer needed since stack coloring is now bug free. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52644 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:24:32 +00:00
Evan Cheng
2e9f0b1a32 Disable PRE. It's breaking bootstrapping. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52643 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:22:35 +00:00
Dan Gohman
8cb8245cf1 Move a DenseMap's declaration outside of a loop, and just call 
clear() on each iteration. This avoids allocating and deallocating
all of DenseMap's memory on each iteration.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52642 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:15:00 +00:00
Dan Gohman
4b84086e89 Use StringMap instead of std::map<std::string, SDNode*>. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52641 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:08:32 +00:00
Dan Gohman
84701836bf Add methods to StringMap to erase entries by key. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52640 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:07:03 +00:00
Evan Cheng
99ec779a93 Instead of adding an isSS field to LiveInterval to denote stack slot. Use top bit of 'reg' instead. If the top bit is set, than the LiveInterval represents a stack slot live interval. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52639 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:03:19 +00:00
Wojciech Matyjewicz
300c6c5167 First step to fix PR2088. Implement routine to compute the 
multiplicative inverse of a given number. Modify udivrem to allow input and 
output pairs of arguments to overlap. Patch is based on the work by Chandler
Carruth.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52638 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 19:39:50 +00:00
Dan Gohman
180c1691c7 Update the .cvs files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52637 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 18:43:26 +00:00
Dan Gohman
ebb5a971d9 Fix the types for NumElements variables, and add a comment 
explaining why empty array constants use ValID::createUndef().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52636 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 18:40:28 +00:00
Owen Anderson
b70a571c99 Tighten the conditions under which we do PRE, remove some unneeded code, and correct our preserved analyses list, since we 
do now change the CFG by splitting critical edges during PRE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52631 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 17:49:45 +00:00
Chris Lattner
2a6a645709 minor tidying of comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52630 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 17:11:23 +00:00
Dan Gohman
2f27e174a9 Remove two convenience constructors because they're now private, and the 
private implementation doesn't really need the convenience.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52629 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 16:48:17 +00:00
Dan Gohman
7894ea75b5 Use std::copy instead of a loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52628 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 16:45:24 +00:00
Dan Gohman
1a203571ca More changes from Chris' review: simplify getIndices and avoid 
copying its return value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52627 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 16:39:44 +00:00
Dan Gohman
19a81633b0 Remove an unnecessary cast. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52626 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 16:38:10 +00:00
Dan Gohman
0a4627d71f Duncan pointed out this code could be tidied. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52624 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 15:29:14 +00:00
Dan Gohman
52bb2db709 Fix the syntax of insertvalue in the example. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52623 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 15:26:37 +00:00
Duncan Sands
e9c80f4d57 Port some integer multiplication fixes from LegalizeDAG. 
Bail out with an error if there is no libcall available
for the given size of integer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52622 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 15:15:44 +00:00
Duncan Sands
4a307ecce6 Support for expanding the result of EXTRACT_ELEMENT. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52621 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 15:08:15 +00:00
Duncan Sands
ab09b7e8f3 Cleanup up LegalizeTypes handling of loads and 
stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52620 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 14:19:45 +00:00
Bill Wendling
04eeefb32a Make test work on non-x86 machines (like my G4 PPC). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52619 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 06:16:31 +00:00
Owen Anderson
ae18bd4246 At Chris' suggestion, move the liveness and worklist datastructures into 
instance variables so they can be allocated just once, and reuse the worklist
as the dead list as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52618 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 06:13:12 +00:00
Dan Gohman
cbfe5bbe88 Improve LSR's dead-phi detection to handle use-def cycles 
with more than two nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52617 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 20:44:02 +00:00
Dan Gohman
9b78763fce Use Loop::block_iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52616 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 20:18:58 +00:00
Dan Gohman
6c459a28ec Generalize createSCEV to be able to form SCEV expressions from 
ConstantExprs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52615 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 19:56:46 +00:00
Dan Gohman
17f1972c77 Use SCEVAddRecExpr::isAffine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52614 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 19:23:09 +00:00
Dan Gohman
09d3fdc254 Remove unnecessary #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52613 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 19:21:26 +00:00
Dan Gohman
11f6d3b478 Move a few more SCEVExpander methods out-of-line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52612 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 19:09:18 +00:00
Chris Lattner
963a97f1a3 Fix PR2369 by making scalarrepl more careful about promoting 
structures.  Its default threshold is to promote things that are
smaller than 128 bytes, which is sane.  However, it is not sane
to do this for things that turn into 128 *registers*.  Add a cap
on the number of registers introduced, defaulting to 128/4=32.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52611 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 17:46:21 +00:00
Duncan Sands
69bfb15ecd Make custom lowering of ADD work correctly. This 
fixes PR2476; patch by Richard Osborne.  The same
problem exists for a bunch of other operators, but
I'm ignoring this because they will be automagically
fixed when the new LegalizeTypes infrastructure lands,
since it already solves this problem centrally.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52610 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 09:42:16 +00:00
Eli Friedman
5c1f172213 Fix for PR2479: correctly optimize expressions like (a > 13) & (a == 
15).

See also PR1800, which is about the signed case.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52608 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 23:36:13 +00:00
Dan Gohman
1adec83ae8 Use Instruction::eraseFromParent(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52606 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:08:46 +00:00
Dan Gohman
4d515d0b09 Use Function's arg_size() and size() methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52605 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:06:54 +00:00
Dan Gohman
5686752099 Simplify some getNode calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52604 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:06:07 +00:00
Dan Gohman
2f1d3108e4 canClobberPhysRegDefs shouldn't called without checking hasPhysRegDefs; 
check this with an assert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52603 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:05:24 +00:00
Dan Gohman
95df6b3603 Avoid creating a redundant zero APInt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52602 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:03:12 +00:00
Dan Gohman
317adcc9c6 Use clear() to zero an existing APInt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52601 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:02:15 +00:00
Dan Gohman
719de53742 Use back() instead of [size()-1]. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52600 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:00:54 +00:00