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* Try hard to link aliases. Checks can be too strict by now.Anton Korobeynikov2008-03-051-20/+101
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47968 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a coalescer bug wrt how dead copy interval is shortened.Evan Cheng2008-03-053-13/+54
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* Handle 'ret' with multiple values.Devang Patel2008-03-051-11/+23
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* test for something more interesting than not crashingAndrew Lenharth2008-03-051-1/+1
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* sync ops on ptrs, was breaking libgompAndrew Lenharth2008-03-051-0/+25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47960 91177308-0d34-0410-b5e6-96231b3b80d8
* Add Hybrid Cycle Detection to Andersen's analysis.Daniel Berlin2008-03-051-32/+272
| | | | | | | | Patch by Curtis Dunham. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47959 91177308-0d34-0410-b5e6-96231b3b80d8
* Clarify that CALLSEQ_START..END may not be nested,Dale Johannesen2008-03-052-0/+8
| | | | | | | | and add some protection against creating such. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47957 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch fixes a problem encountered by the CellSPU backend where variantsScott Michel2008-03-052-53/+132
| | | | | | | | | | | | | | | were being pruned in patterns where a variable was used more than once, e.g.: (or (and R32C:$rA, R32C:$rC), (and R32C:$rB, (not R32C:$rC))) In this example, $rC is used more than once and is actually significant to instruction selection pattern matching when commuted variants are produced. This patch scans the pattern's clauses and collects the variables, creating a set of variables that are used more than once. TreePatternNode::isIsomorphicTo() also understands that multiply-used variables are significant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47950 91177308-0d34-0410-b5e6-96231b3b80d8
* evan implemented this.Chris Lattner2008-03-051-26/+0
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* Fix test not to emit junk into source directoryAnton Korobeynikov2008-03-051-2/+2
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* Testcase for PR2054Anton Korobeynikov2008-03-052-0/+28
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* Remember the source->dest mapping when copying aliases. This fixes PR2054Anton Korobeynikov2008-03-051-4/+10
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* Clarify the state-of-the-artAnton Korobeynikov2008-03-051-9/+12
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* Use AC_PATH_PROG correctly:Bill Wendling2008-03-052-46/+35
| | | | | | | | http://www.gnu.org/software/autoconf/manual/autoconf.html#Generic-Programs git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47943 91177308-0d34-0410-b5e6-96231b3b80d8
* isTwoAddress = 1 -> Constraints.Evan Cheng2008-03-051-47/+47
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* PSLLWri etc. are two-address instructions.Evan Cheng2008-03-051-1/+3
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* add a noteChris Lattner2008-03-051-0/+30
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* Generalize FP constant shrinking optimization to apply to any vtChris Lattner2008-03-052-26/+32
| | | | | | | | | except ppc long double. This allows us to shrink constant pool entries for x86 long double constants, which in turn allows us to use flds/fldl instead of fldt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47938 91177308-0d34-0410-b5e6-96231b3b80d8
* Improve comment, pass in the original VT so that we can shrink a long double ↵Chris Lattner2008-03-051-2/+4
| | | | | | | | | constant all the way to float, not stopping at double. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47937 91177308-0d34-0410-b5e6-96231b3b80d8
* Ignore debugging related instructions if they get this far.Evan Cheng2008-03-051-0/+4
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* Rather than asserting. Dump out the MI that we are not able to encode and abort.Evan Cheng2008-03-051-1/+6
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* Codegen support for i128 UINT_TO_FP. This just fixes aDan Gohman2008-03-052-6/+2
| | | | | | | | | bug in r47928 (Int64Ty is the correct type for the constant pool entry here) and removes the asserts, now that the code is capable of handling i128. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47932 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a target lowering hook to control whether it's worthwhile to compress fp ↵Evan Cheng2008-03-054-1/+24
| | | | | | | | | constant. For x86, if sse2 is available, it's not a good idea since cvtss2sd is slower than a movsd load and it prevents load folding. On x87, it's important to shrink fp constant since fldt is very expensive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47931 91177308-0d34-0410-b5e6-96231b3b80d8
* 64bit CAS on 32bit x86.Andrew Lenharth2008-03-054-8/+75
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* Codegen support for i128 SINT_TO_FP.Dan Gohman2008-03-054-21/+60
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* Refactor code. Remove duplicated functions that basically do the same thing asEvan Cheng2008-03-0516-187/+170
| | | | | | | findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47927 91177308-0d34-0410-b5e6-96231b3b80d8
* Skip functions that return multiple values.Devang Patel2008-03-051-0/+5
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* Check struct return type first. Devang Patel2008-03-051-6/+7
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* Removed spurious EnablePPCRS check.Bill Wendling2008-03-041-4/+3
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* Move PPC lowering functions into PPCTargetLoweringDale Johannesen2008-03-042-28/+120
| | | | | | | | | class (cosmetic). First piece of byval implementation; this doesn't work yet. No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47917 91177308-0d34-0410-b5e6-96231b3b80d8
* Use -enable-ppc-regscavenger flag for these checksBill Wendling2008-03-041-2/+2
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* Use a command-line option to turn register scavenging on/off for PPC.Bill Wendling2008-03-042-39/+51
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* Print types for all ret operands.Devang Patel2008-03-041-1/+2
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* Use while loop.Devang Patel2008-03-041-3/+2
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* Revert SmallVector ctor variants.Devang Patel2008-03-042-60/+0
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* Use cast instead of dyn_cast.Devang Patel2008-03-042-11/+12
| | | | | | | Update test to use multiple return value directly, instead of relying on -sretpromotion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47907 91177308-0d34-0410-b5e6-96231b3b80d8
* Filter nested structsDevang Patel2008-03-041-0/+16
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* Handle multiple return values.Devang Patel2008-03-042-3/+41
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* x86-64 atomicsAndrew Lenharth2008-03-042-2/+35
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* Properly populate lists of defined/undefined symbols in presence of aliasesAnton Korobeynikov2008-03-041-1/+11
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* Add alias with non-external aliasee to the list of exported symbols of the ↵Anton Korobeynikov2008-03-041-1/+10
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* Use appropriate index to get the result value.Devang Patel2008-03-041-1/+3
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* Skip sret attribute while preparing attribute list forDevang Patel2008-03-041-11/+21
| | | | | | | new function and new call sites. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47896 91177308-0d34-0410-b5e6-96231b3b80d8
* Add FunctionType ctor variant that takes SmallVector params.Devang Patel2008-03-042-0/+60
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* Increment counter that keeps track of total number of sret promoted.Devang Patel2008-03-041-0/+1
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* Skip declarations.Devang Patel2008-03-041-1/+1
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* Process externally visible functions also. Later on code generator will do ↵Devang Patel2008-03-041-2/+1
| | | | | | the right thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47889 91177308-0d34-0410-b5e6-96231b3b80d8
* Collect statistics.Devang Patel2008-03-041-5/+11
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* Fix a typo noticed by Erick Tryzelaar,Gordon Henriksen2008-03-041-1/+1
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* Some improvements related to the computation of heights, depths of SUnits.Roman Levenstein2008-03-041-21/+93
| | | | | | | The basic idea is that all these algorithms are computing the longest paths from the root node or to the exit node. Therefore the existing implementation that uses and iterative and potentially exponential algorithm was changed to a well-known graph algorithm based on dynamic programming. It has a linear run-time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47884 91177308-0d34-0410-b5e6-96231b3b80d8
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