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path: root/lib/Transforms/Scalar/LoopIndexSplit.cpp
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2008-05-19Do not erase induction variable increment if it is used outside the loop.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51280 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-16API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. ↵Gabor Greif
Legacy interfaces will be in place for some time. (Merge from use-diet branch.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51200 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-13Clean up the use of static and anonymous namespaces. This turned upDan Gohman
several things that were neither in an anonymous namespace nor static but not intended to be global. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51017 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-02Porting r50563 from Tak to mainline.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50564 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-06API changes for class Use size reduction, wave 1.Gabor Greif
Specifically, introduction of XXX::Create methods for Users that have a potentially variable number of Uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49277 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-02Iterators folloring a SmallVector erased element are invalidated soDavid Greene
don't access cached iterators from after the erased element. Re-apply 49056 with SmallVector support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49106 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-01Reverting 49056 due to the build being broken.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49060 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-01Iterators folloring a SmallVector erased element are invalidated soDavid Greene
don't access cached iterators from after the erased element. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49056 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-27PHI->removeIncomingValue may remove PHInode.Devang Patel
Increment iterator in advance. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48890 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-24Add incoming value from header only if phi node has any use inside the loop.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48738 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-14If loop header is also loop exiting block then OrigPN is incoming value for ↵Devang Patel
B loop header. Fixes PR 2030. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47141 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13A loop latch phi node may have uses inside loop, not just in loop header.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47093 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13While moving exit condition, do not drop loop latch on the floor.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47089 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13Keep track of exit value operand number when operands are swapped.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47082 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-08Fix PR 1995.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46898 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29Filter loops that subtract induction variables.Devang Patel
These loops are not yet handled. Fix PR 1912. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46484 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29Remove attribution from file headers, per discussion on llvmdev.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-03If ExitValue operand is also defined in Loop header thenDevang Patel
insert new ExitValue after this operand definition. This fixes PR1828. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44539 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-25Handle multiple induction variables.Devang Patel
This fixes PR714. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42309 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-25doh.. Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42300 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-25Add transformation to update loop interation space. Now,Devang Patel
for (i=A; i<N; i++) { if (i < X && i > Y) do_something(); } is transformed into U=min(N,X); L=max(A,Y); for (i=L;i<U;i++) do_somethihg(); git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42299 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-21Fix PR1692Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42209 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-20Don't increment invalid iterator.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42178 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-19Relax loop ExitCondition predicate restriction.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42122 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-19Filter loops where split condition's false branch is not empty. For exampleDevang Patel
for (int i = 0; i < N; ++i) { if (i == somevalue) dosomething(); else dosomethingelse(); } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42121 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-19Bail out early, before modifying anything.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42120 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-19Work is incomplete. Loop is not modified at all right now.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42119 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-17Do not eliminate loop when it is invalid to do so. For example,Devang Patel
for(int i = 0; i < N; i++) { if ( i == XYZ) { A; else B; } C; D; } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42058 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-17Skeleton for transformations to truncate loop's iteration space.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42054 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-14Temporary reverting r41817Bill Wendling
(http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070910/053370.html). It's causing SPASS to fail. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41938 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11Avoid negative logic.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41829 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11Refactor code into a separate method.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41826 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11Clear split info object.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41823 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11Split condition does not have to be ICmpInst in all cases.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41822 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-10Check all terminators inside loop.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41821 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-10Swap exit condition operands if it works.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41817 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
2007-08-27Use simpler test to filter loops.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41516 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25Move 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
2007-08-22Remove 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
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