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2008-12-04Use register names instead of numbers in debug output.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60525 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-04Make debug output more informative.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60524 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-04Add minimal support for disambiguating memory references. CurrentlyDan Gohman
the main thing this covers is spills to distinct spill slots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60517 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Rewrite the liveness bookkeeping code to fix a bunch ofDan Gohman
issues with subreg operands and tied operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60510 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Have PseudoSourceValue override Value::dump, so that it worksDan Gohman
on PseudoSourceValue values. This also fixes a FIXME in lib/VMCode/AsmWriter.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60507 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Fix an inconsistency in a comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60500 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Don't charge the full latency for anti and output dependencies. This isDan Gohman
an area where eventually it would be good to use target-dependent information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60498 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03When looking for anti-dependences on the critical path, don't botherDan Gohman
examining non-anti-dependence edges. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60496 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Add a comment about callee-saved registers.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60495 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Split foldMemoryOperand into public non-virtual and protected virtualDan Gohman
parts, and add target-independent code to add/preserve MachineMemOperands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60488 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Rename isSimpleLoad to canFoldAsLoad, to better reflect its meaning.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60487 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Only check that the result of the mapping was notDuncan Sands
a new node if the node was actually remapped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60482 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Fix bug 3140.Rafael Espindola
Print a single parameter .file directive if we have an ELF target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60480 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Add a sanity-check to tablegen to catch the case where isSimpleLoadDan Gohman
is set but mayLoad is not set. Fix all the problems this turned up. Change code to not use isSimpleLoad instead of mayLoad unless it really wants isSimpleLoad. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60459 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02Remove a (what appears to be) overly strict assertion. Here is what happened:Evan Cheng
1. ppcf128 select is expanded to f64 select's. 2. f64 select operand 0 is an i1 truncate, it's promoted to i32 zero_extend. 3. f64 select is updated. It's changed back to a "NewNode" and being re-analyzed. 4. f64 select operands are being processed. Operand 0 is a "NewNode". It's being expunged out of ReplacedValues map. 5. ExpungeNode tries to remap f64 select and notice it's a "NewNode" and assert. Duncan, please take a look. Thanks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60443 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02Non-functional change: make custom lowering for truncate stylisticallyScott Michel
consistent with the way it's generally done in other places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60439 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02Fix a typo in a comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60434 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02Add support for folding spills into preceding defs when doing pre-alloc ↵Owen Anderson
splitting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60433 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02One more transformation.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60432 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02make it possible to custom lower TRUNCATE (needed for the CellSPU target)Tilmann Scheller
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60409 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02Removed some unnecessary code in widening.Mon P Wang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60406 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02Fix PR3124: overly strict assert.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60392 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02Add a few more transformations.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60391 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-01Expand getVTList, getNodeValueTypes, and SelectNodeTo to handle more value ↵Bill Wendling
types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60381 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-01There are no longer any places that require aDuncan Sands
MERGE_VALUES node with only one operand, so get rid of special code that only existed to handle that possibility. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60349 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-01Change the interface to the type legalization methodDuncan Sands
ReplaceNodeResults: rather than returning a node which must have the same number of results as the original node (which means mucking around with MERGE_VALUES, and which is also easy to get wrong since SelectionDAG folding may mean you don't get the node you expect), return the results in a vector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60348 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30Followup to r60283: optimize arbitrary width signed divisions as well Eli Friedman
as unsigned divisions. Same caveats as before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60284 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30Fix for PR2164: allow transforming arbitrary-width unsigned divides intoEli Friedman
multiplies. Some more cleverness would be nice, though. It would be nice if we could do this transformation on illegal types. Also, we would prefer a narrower constant when possible so that we can use a narrower multiply, which can be cheaper. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60283 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30APIntify a test which is potentially unsafe otherwise, and fix the Eli Friedman
nearby FIXME. I'm not sure what the right way to fix the Cell test was; if the approach I used isn't okay, please let me know. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60277 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Silence a warning.Nick Lewycky
Despite changing the order of evaluation, this doesn't actually change the meaning of the statement. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60177 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Removing redundant semicolons. No functionality change.Sanjiv Gupta
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60149 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Avoid inserting noop's in the middle of a loop.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60141 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Add a missing case in visitADD.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60137 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Allow custom lowering of ADDE/ADDC/SUBE/SUBC operations.Sanjiv Gupta
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60102 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26LiveRanges are represented as half-open ranges. Fix the findLiveInMBBs codeDan Gohman
and the LiveInterval.h top-level comment and accordingly. This fixes blocks having spurious live-in registers in boundary cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60092 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25A simplification for checking whether the signs of the operands and sum ↵Bill Wendling
differ. Thanks, Duncan. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60043 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25Suppress warnings.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60041 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25Now with the correct type for the 0.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60016 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25Get rid of unused variable.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60015 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25Hacker's Delight says, "Signed integer overflow of addition occurs if and onlyBill Wendling
if the operands have the same sign and the sum has sign opposite to that of the operands." git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60014 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25Initial support for anti-dependence breaking. Currently this code does notDan Gohman
introduce any new spilling; it just uses unused registers. Refactor the SUnit topological sort code out of the RRList scheduler and make use of it to help with the post-pass scheduler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59999 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24- Make lowering of "add with overflow" customizable by back-ends.Bill Wendling
- Mark "add with overflow" as having a custom lowering for X86. Give it a null lowering representation for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59971 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Check in the rest of this change. The isAntiDep flag needs to be passedDan Gohman
to removePred because an SUnit can both data-depend and anti-depend on the same SUnit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59969 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Pass the isAntiDep argument.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59968 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Run post-RA scheduling after branch folding, as it tends toDan Gohman
obscure tail-merging opportunities. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59967 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Minor fix debug for register allocation debug output.Matthijs Kooijman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59961 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24If the type legalizer actually legalized anythingDuncan Sands
(this doesn't happen that often, since most code does not use illegal types) then follow it by a DAG combiner run that is allowed to generate illegal operations but not illegal types. I didn't modify the target combiner code to distinguish like this between illegal operations and illegal types, so it will not produce illegal operations as well as not producing illegal types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59960 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Eliminate some unused variable compile time warnings.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59952 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Add support for llvm.uadd.with.overflow.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59926 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-23Rename SetCCResultContents to BooleanContents. InDuncan Sands
practice these booleans are mostly produced by SetCC, however the concept is more general. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59911 91177308-0d34-0410-b5e6-96231b3b80d8
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