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path: root/llvm/lib/CodeGen/SelectionDAG/SelectionDAGAddressAnalysis.cpp
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* Rewrite areNonVolatileConsecutiveLoads to use BaseIndexOffsetNirav Dave2017-07-051-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Relanding after rewriting undef.ll test to avoid host-dependant endianness. As discussed in D34087, rewrite areNonVolatileConsecutiveLoads using generic checks. Also, propagate missing local handling from there to BaseIndexOffset checks. Tests of note: * test/CodeGen/X86/build-vector* - Improved. * test/CodeGen/BPF/undef.ll - Improved store alignment allows an additional store merge * test/CodeGen/X86/clear_upper_vector_element_bits.ll - This is a case we already do not handle well. Here, the DAG is improved, but scheduling causes a code size degradation. Reviewers: RKSimon, craig.topper, spatel, andreadb, filcab Subscribers: nemanjai, llvm-commits Differential Revision: https://reviews.llvm.org/D34472 llvm-svn: 307114
* [DAG] Fixed predicate for determining when two frame indicesNirav Dave2017-07-041-5/+5
| | | | | | addresses are comparable. NFCI. llvm-svn: 307055
* Revert "[DAG] Rewrite areNonVolatileConsecutiveLoads to use BaseIndexOffset"Nirav Dave2017-06-301-12/+6
| | | | | | | This reverts commit r306819 which appears be exposing underlying issues in a stage1 ppc64be build llvm-svn: 306820
* [DAG] Rewrite areNonVolatileConsecutiveLoads to use BaseIndexOffsetNirav Dave2017-06-301-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | As discussed in D34087, rewrite areNonVolatileConsecutiveLoads using generic checks. Also, propagate missing local handling from there to BaseIndexOffset checks. Tests of note: * test/CodeGen/X86/build-vector* - Improved. * test/CodeGen/BPF/undef.ll - Improved store alignment allows an additional store merge * test/CodeGen/X86/clear_upper_vector_element_bits.ll - This is a case we already do not handle well. Here, the DAG is improved, but scheduling causes a code size degradation. Reviewers: RKSimon, craig.topper, spatel, andreadb, filcab Subscribers: nemanjai, llvm-commits Differential Revision: https://reviews.llvm.org/D34472 llvm-svn: 306819
* [DAG] Fold FrameIndex offset into BaseIndexOffset analysis. NFCI.Nirav Dave2017-06-291-10/+24
| | | | | | | | | | | Relanding after restricting equalBaseIndex to not erroneuosly consider a FrameIndices stemming from alloca from being comparable as its offset is set post-selectionDAG. Pull FrameIndex comparision reasoning from DAGCombiner::isAlias to general BaseIndexOffset. llvm-svn: 306688
* Revert "[DAG] Fold FrameIndex offset into BaseIndexOffset analysis. NFCI."Nirav Dave2017-06-281-13/+4
| | | | | | This reverts commit r306498 which appears to cause a compilrt-rt test failures llvm-svn: 306501
* [DAG] Fold FrameIndex offset into BaseIndexOffset analysis. NFCI.Nirav Dave2017-06-281-4/+13
| | | | | | | Pull FrameIndex comparision reasoning from DAGCombiner::isAlias to general BaseIndexOffset. llvm-svn: 306498
* [DAG] Move BaseIndexOffset into separate Libarary. NFC.Nirav Dave2017-06-211-0/+95
Move BaseIndexOffset analysis out of DAGCombiner for use in other files. llvm-svn: 305921
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