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2007-09-10Prevent tailcallelim from breaking "recursive" calls to builtins.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41804 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-10Filter exit conditions which are not yet handled.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41800 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-10Require SCEV before LCSSA.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41798 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-07Don't zap back to back volatile load/storesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41759 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06Next round of APFloat changes.Dale Johannesen
Use APFloat in UpgradeParser and AsmParser. Change all references to ConstantFP to use the APFloat interface rather than double. Remove the ConstantFP double interfaces. Use APFloat functions for constant folding arithmetic and comparisons. (There are still way too many places APFloat is just a wrapper around host float/double, but we're getting there.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41747 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06Use isTrueWhenEqual. Thanks Chris!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41741 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06When the two operands of an icmp are equal, there are five possible predicatesNick Lewycky
that would make the icmp true. Fixes PR1637. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41740 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-05Forgot to obey 80 column rule. Fixing that.Chuck Rose III
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41725 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-05Added default parameters to GetElementPtrInstr constructor call. Visual ↵Chuck Rose III
Studio 2k5 was getting confused and was unable to compile it. Suspected compiler error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41721 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-04Insert cloned loop basic blocks before original loop header.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41713 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-04Update GEP constructors to use an iterator interface to fixDavid Greene
GLIBCXX_DEBUG issues. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41697 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-02Silence warning while compiling with gcc 4.2Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41676 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-01Fix a gcroot lowering bug.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41668 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-28Cut off crazy computation. This helps PR1622 slightly.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41522 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-27Use simpler test to filter loops.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41516 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-27Update InvokeInst to work like CallInstDavid Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41506 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-27Change comments to refer to @malloc and @free instead of %malloc and %free.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41488 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-26Don't promote volatile loads/stores. This is needed (for example) to handle ↵Anton Korobeynikov
setjmp/longjmp properly. This fixes PR1520. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41461 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-26Don't DSe volatile stores.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41456 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25Move exit condition and exit branch from exiting block into loop header and ↵Devang Patel
dominator info. This avoid execution of dead iteration. Loop is already filter in the beginning such that this change is safe. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41394 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25Constant split values needs upper bound and lower bound check, just like any ↵Devang Patel
other split value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41389 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25While calculating upper loop bound for first loop and lower loop bound for ↵Devang Patel
second loop, take care of edge cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41387 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-24Fix regression that I caused yesterday night while adding logic to select ↵Devang Patel
appropriate split condition branch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41365 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-24It is not safe to execute split condition's true branch first all the time. ↵Devang Patel
If split condition predicate is GT or GE then execute false branch first. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41358 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-24Reject ICMP_NE as index split condition.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41357 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-24Tightenup loop filter.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41356 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-24Remove incomplete cost analysis.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41354 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-23rename APInt::toString -> toStringUnsigned for symmetry with toStringSigned()Chris Lattner
Add an APSInt::toString() method. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41309 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-22Remove dead code.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41295 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-22Fix typo.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41292 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-22Cosmetic changeDevang Patel
"True Loop" and "False Loop" naming terminology to refer two loops after loop cloning is confusing. Instead just use A_Loop and B_Loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41287 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-22Refactor loop condition check in a separate function.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41282 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-22Fix thinko.Devang Patel
Starting value of second loop's induction variable can not be lower then starting value of original loop's induction variable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41280 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-21Rename bunch of variables.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41250 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-21Preserve LCSSA.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41246 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-21Use SmallVector instead of std::vector.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41207 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-20s/ExitBlock/ExitingBlock/gDevang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41204 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-20Replace indunction variable with split value in loop body.Devang Patel
This fixes art miscompile. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41195 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-20Do not split loops rejected by processOneIterationLoop().Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41194 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-18Oops, remove assert that wasn't meant to be committed.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41170 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-18Never insert duplicate edges.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41169 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-18Typo.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41168 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-18Avoid spliting loops where two split condition branches are not independent.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41148 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-17When one branch of condition is eliminated then head of the otherDevang Patel
branch is not necessary immediate dominators of merge blcok in all cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41144 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-16Factor out some code into a helper function.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41131 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-16Add some more comments to GVN.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41129 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15Dominance frontier is now required.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41096 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15Cleanup removeBlocks. Devang Patel
Use dominance frontier to fixup incoming edges of successor blocks not domianted by DeadBB. Use df_iterator to walk and delete basic blocks dominated by DeadBB. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41095 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15Remove unneeded header file.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41094 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15Avoid triangle loops.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41093 91177308-0d34-0410-b5e6-96231b3b80d8