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* Remove llvm-upgrade and update tests.Tanya Lattner2008-02-1951-1306/+1302
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47325 91177308-0d34-0410-b5e6-96231b3b80d8
* dead passChris Lattner2008-02-191-16/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47324 91177308-0d34-0410-b5e6-96231b3b80d8
* remove the LowerSelect pass. The last client was the old Sparc backend, ↵Chris Lattner2008-02-198-120/+0
| | | | | | which is long dead by now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47323 91177308-0d34-0410-b5e6-96231b3b80d8
* remove the lower packed pass. It can never work and even the parts that Chris Lattner2008-02-193-456/+0
| | | | | | | | could work don't work fully. This fixes PR1705. Oh yeah, we don't have packed types anymore either ;-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47322 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor this method a bit, and correct a test that was completely wrong but ↵Owen Anderson2008-02-191-7/+11
| | | | | | happened to work out anyways. :-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47321 91177308-0d34-0410-b5e6-96231b3b80d8
* isa+cast -> dyncast.Chris Lattner2008-02-191-2/+2
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* simplify this code again, try 2 :)Chris Lattner2008-02-191-7/+5
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* Fix a comment.Owen Anderson2008-02-191-1/+1
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* In addition to arguments passed to it, memcpy (and all other calls) can ↵Owen Anderson2008-02-191-1/+2
| | | | | | ModRef pointers that alias their arguments as well. This fixes PR2057. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47317 91177308-0d34-0410-b5e6-96231b3b80d8
* Major improvements to yesterday's return slot optimization. Remove some ↵Owen Anderson2008-02-191-14/+39
| | | | | | | | | unneccessary constraints, and add some others that should have been in from the first place. Document the whole thing better. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47315 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix some minor issues folding undef, PR2052Chris Lattner2008-02-191-1/+3
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* fdiv/frem of undef can produce undef, because the undef operand Chris Lattner2008-02-191-4/+11
| | | | | | | | | can be a SNaN. We could be more aggressive and turn this into unreachable, but that is less nice, and not really worth it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47313 91177308-0d34-0410-b5e6-96231b3b80d8
* regenerateChris Lattner2008-02-193-3431/+4591
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* Fix PR2060 by rejecting invalid types for integer constants.Chris Lattner2008-02-192-11/+21
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* Factor the profitability check for return slot optimization out into a ↵Owen Anderson2008-02-191-14/+26
| | | | | | | | | static function. At some point in the future, this check will become smarter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47310 91177308-0d34-0410-b5e6-96231b3b80d8
* An sret parameter is required to be the first parameter, so there's no need ↵Owen Anderson2008-02-191-8/+3
| | | | | | | | | to loop over all the parameters of the callee looking for it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47309 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't spew stats to stderr.Nick Lewycky2008-02-191-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47308 91177308-0d34-0410-b5e6-96231b3b80d8
* Cleanup some of my patches from yesterday. Refactor the check for which xformOwen Anderson2008-02-191-22/+23
| | | | | | | | to apply to a memcpy into processInstruction. Also, fix a bug in the check due to missing braces. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47307 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix up the run line for this new test.Nick Lewycky2008-02-191-1/+1
| | | | | | | llc: for the -info-output-file option: requires a value! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47306 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix Transforms/GVN/memcpy.ll, which Chris broke in r47275 by reordering the ↵Owen Anderson2008-02-191-1/+2
| | | | | | branches. memcpy's are a kind of CallInst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47305 91177308-0d34-0410-b5e6-96231b3b80d8
* New test.Evan Cheng2008-02-191-0/+219
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* PR1909: Tail merging pass ran wild. It makes no sense to merge blocks in ↵Evan Cheng2008-02-191-3/+12
| | | | | | order to save a single instruction since a branch will be inserted for each BB. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47301 91177308-0d34-0410-b5e6-96231b3b80d8
* Me not like duplicated comments.Evan Cheng2008-02-191-4/+4
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* Remove llvm-upgrade and update tests.Tanya Lattner2008-02-1911-137/+118
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47297 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove llvm-upgrade and update tests.Tanya Lattner2008-02-19162-3373/+3173
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* - When DAG combiner is folding a bit convert into a BUILD_VECTOR, it should ↵Evan Cheng2008-02-188-60/+129
| | | | | | | | | check if it's essentially a SCALAR_TO_VECTOR. Avoid turning (v8i16) <10, u, u, u> to <10, 0, u, u, u, u, u, u>. Instead, simply convert it to a SCALAR_TO_VECTOR of the proper type. - X86 now normalize SCALAR_TO_VECTOR to (BIT_CONVERT (v4i32 SCALAR_TO_VECTOR)). Get rid of X86ISD::S2VEC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47290 91177308-0d34-0410-b5e6-96231b3b80d8
* Correctly fold divide-by-constant, even when faced with overflow.Nick Lewycky2008-02-183-2/+50
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* Chris pointed out that it's not necessary to set i64 MUL to ExpandDan Gohman2008-02-181-12/+10
| | | | | | | | on x86-32 since i64 itself is not a Legal type. And, update some comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47282 91177308-0d34-0410-b5e6-96231b3b80d8
* - Remove the previous check which broke coalescer-commute3.llEvan Cheng2008-02-181-5/+5
| | | | | | | - For now, conservatively ignore copy MI whose source is a physical register. Commuting its def MI can cause a physical register live interval to be live through a loop (since we know it's live coming into the def MI). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47281 91177308-0d34-0410-b5e6-96231b3b80d8
* upgrade some tests.Chris Lattner2008-02-181-39/+43
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* Add a noteNate Begeman2008-02-181-0/+3
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* Add a note about sext from i1 plus flags use.Chris Lattner2008-02-181-0/+52
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* Don't mark scalar integer multiplication as Expand on x86, since x86Dan Gohman2008-02-182-5/+14
| | | | | | | | | | | | | | has plain one-result scalar integer multiplication instructions. This avoids expanding such instructions into MUL_LOHI sequences that must be special-cased at isel time, and avoids the problem with that code that provented memory operands from being folded. This fixes PR1874, addressesing the most common case. The uncommon cases of optimizing multiply-high operations will require work in DAGCombiner. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47277 91177308-0d34-0410-b5e6-96231b3b80d8
* Transforming -A + -B --> -(A + B) isn't safe for FP, thanksChris Lattner2008-02-181-4/+6
| | | | | | | to Dale for noticing this! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47276 91177308-0d34-0410-b5e6-96231b3b80d8
* minor code simplification, no functionality change.Chris Lattner2008-02-181-8/+6
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* make this just a bit more strict.Chris Lattner2008-02-181-1/+1
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* Simplify caller updating using a CallSite, asDuncan Sands2008-02-183-22/+21
| | | | | | | | | requested by Chris. While there, do the same for an existing function committed by someone called "lattner" :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47273 91177308-0d34-0410-b5e6-96231b3b80d8
* don't bother calling getUnderlyingObject for non-pointers.Chris Lattner2008-02-181-1/+2
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* Fix a missing space in the description of the find-bugs option.Dan Gohman2008-02-181-1/+1
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* Since we're not checking for the more general AllocationInst first, we need ↵Owen Anderson2008-02-181-1/+1
| | | | | | | | | to explicitly check that Object is an Argument before casting it to one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47268 91177308-0d34-0410-b5e6-96231b3b80d8
* New helper function getMBBFromIndex() that given an index in any instruction ↵Roman Levenstein2008-02-182-16/+30
| | | | | | of an MBB returns a pointer the MBB. Reviewed by Evan. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47267 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support to GVN for performing sret return slot optimization. This means ↵Owen Anderson2008-02-182-2/+94
| | | | | | | | | | | | that, if an sret function tail calls another sret function, it should pass its own sret parameter to the tail callee, allowing it to fill in the correct return value. llvm-gcc does not emit this by default. Instead, it allocates space in the caller for the sret of the tail call and then uses memcpy to copy the result into the caller's sret parameter. This optimization detects and optimizes that case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47265 91177308-0d34-0410-b5e6-96231b3b80d8
* I got the predicate backwards in my last patch. The comment is correct, the ↵Owen Anderson2008-02-181-1/+1
| | | | | | code was not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47264 91177308-0d34-0410-b5e6-96231b3b80d8
* This check is not correct for mallocs, so exclude them earlier.Owen Anderson2008-02-181-2/+2
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* For now, avoid commuting def MI for copy MI's whose source is not killed. ↵Evan Cheng2008-02-181-0/+7
| | | | | | That simply trade a live interval for another and because only the non-two-address operands can be folded into loads, may end up pessimising code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47262 91177308-0d34-0410-b5e6-96231b3b80d8
* switch simplifycfg from using vectors for most things to smallvectors,Chris Lattner2008-02-181-14/+12
| | | | | | | this speeds it up 2.3% on eon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47261 91177308-0d34-0410-b5e6-96231b3b80d8
* optimize away stackrestore calls that have no intervening alloca or call.Chris Lattner2008-02-182-13/+58
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* upgrade this test.Chris Lattner2008-02-181-11/+11
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* Clarify that 'sret' only applies to pointers, andDuncan Sands2008-02-181-2/+3
| | | | | | | only applies to the first parameter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47256 91177308-0d34-0410-b5e6-96231b3b80d8
* Make the definition of the noalias attribute clearer.Owen Anderson2008-02-181-2/+3
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