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path: root/lib/Transforms/Scalar/LoopInstSimplify.cpp
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* Propagate TargetLibraryInfo throughout ConstantFolding.cpp and Chad Rosier2011-12-011-1/+5
| | | | | | | InstructionSimplify.cpp. Other fixups as needed. Part of rdar://10500969 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145559 91177308-0d34-0410-b5e6-96231b3b80d8
* LoopInstSimplify preserves ScalarEvolution.Cameron Zwarich2011-02-111-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125368 91177308-0d34-0410-b5e6-96231b3b80d8
* LoopInstSimplify preserves LoopSimplify.Cameron Zwarich2011-01-091-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123117 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix coding style issues.Cameron Zwarich2011-01-081-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123065 91177308-0d34-0410-b5e6-96231b3b80d8
* Contract subloop bodies. However, it is still important to visit the phis at theCameron Zwarich2011-01-081-7/+41
| | | | | | | top of subloop headers, as the phi uses logically occur outside of the subloop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123062 91177308-0d34-0410-b5e6-96231b3b80d8
* Use pop_back_val instead of back followed by pop_back.Cameron Zwarich2011-01-051-2/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122876 91177308-0d34-0410-b5e6-96231b3b80d8
* Use a worklist for later iterations just like ordinary instsimplify. The nextCameron Zwarich2011-01-051-0/+19
| | | | | | | | step is to only process instructions in subloops if they have been modified by an earlier simplification. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122869 91177308-0d34-0410-b5e6-96231b3b80d8
* Change LoopInstSimplify back to a LoopPass. It revisits subloops rather thanCameron Zwarich2011-01-051-10/+36
| | | | | | | | | | | skipping them, but it should probably use a worklist and only revisit those instructions in subloops that have actually changed. It should probably also use a worklist after the first iteration like instsimplify now does. Regardless, it's only 0.3% of opt -O2 time on 403.gcc if it replaces the instcombine placed in the middle of the loop passes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122868 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch to the new style of asterisk placement.Cameron Zwarich2011-01-041-8/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122815 91177308-0d34-0410-b5e6-96231b3b80d8
* Address most of Duncan's review comments. Also, make LoopInstSimplify a simpleCameron Zwarich2011-01-041-37/+15
| | | | | | | | | | | | | FunctionPass. It probably doesn't have a reason to be a LoopPass, as it will probably drop the simple fixed point and either use RPO iteration or Duncan's approach in instsimplify of only revisiting instructions that have changed. The next step is to preserve LoopSimplify. This looks like it won't be too hard, although the pass manager doesn't actually seem to respect when non-loop passes claim to preserve LCSSA or LoopSimplify. This will have to be fixed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122791 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new loop-instsimplify pass, with the intention of replacing the instanceCameron Zwarich2011-01-031-0/+112
of instcombine that is currently in the middle of the loop pass pipeline. This commit only checks in the pass; it will hopefully be enabled by default later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122719 91177308-0d34-0410-b5e6-96231b3b80d8
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