variable initialization from its usage in the push_back making
collapse of the two statements unlikely even without a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244470 91177308-0d34-0410-b5e6-96231b3b80d8
This change adds the unroll metadata "llvm.loop.unroll.enable" which directs
the optimizer to unroll a loop fully if the trip count is known at compile time, and
unroll partially if the trip count is not known at compile time. This differs from
"llvm.loop.unroll.full" which explicitly does not unroll a loop if the trip count is not
known at compile time.
The "llvm.loop.unroll.enable" is intended to be added for loops annotated with
"#pragma unroll".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244466 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This adds a hook to TTI which enables us to selectively turn on by default
interleaved access vectorization for targets on which we have have performed
the required benchmarking.
Reviewers: rengolin
Subscribers: rengolin, llvm-commits
Differential Revision: http://reviews.llvm.org/D11901
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244449 91177308-0d34-0410-b5e6-96231b3b80d8
The scalarizer can cache incorrect entries when walking up a chain of
insertelement instructions. This occurs when it encounters more than one
instruction that it is not actively searching for, as it unconditionally caches
every element it finds. The fix is to only cache the first element that it
isn't searching for so we don't overwrite correct entries.
Reviewers: hfinkel
Differential Revision: http://reviews.llvm.org/D11559
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244448 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Analogously to Function::viewCFG(), RegionInfo::view() and RegionInfo::viewOnly() are meant to be called in debugging sessions. They open a viewer to show how RegionInfo currently understands the region hierarchy.
The functions viewRegion(Function*) and viewRegionOnly(Function*) invoke a fresh region analysis of the function in contrast to viewRegion(RegionInfo*) and viewRegionOnly(RegionInfo*) which show the current analysis result.
Reviewers: grosser
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D11875
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244444 91177308-0d34-0410-b5e6-96231b3b80d8
This allows printing region graphs when only the RegionInfo (e.g. Region::getRegionInfo()), but no RegionInfoPass object is available.
Specifically, we will use this to print RegionInfo graphs in the debugger.
Differential version: http://reviews.llvm.org/D11874
Reviewed-by: grosser
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244442 91177308-0d34-0410-b5e6-96231b3b80d8
PR24139 contains an analysis of poor register allocation. One of the findings
was that when calculating the spill weight, a rematerializable interval once
split is no longer rematerializable. This is because the isRematerializable
check in CalcSpillWeights.cpp does not follow the copies introduced by live
range splitting (after splitting, the live interval register definition is a
copy which is not rematerializable).
Reviewers: qcolombet
Differential Revision: http://reviews.llvm.org/D11686
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244439 91177308-0d34-0410-b5e6-96231b3b80d8
The SP was always unconditionally assigned to later, but initialised early.
This delays the initialisation, and avoids the dead store. Identified by
clang static analysis. No functional change intended.
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We can only PHI translate instructions. In our attempt to PHI translate
a bitcast, we attempt to translate its operand; however, the operand
might be an argument or a global instead of an instruction. Benignly
bail out when this happens.
This fixes PR24397.
Differential Revision: http://reviews.llvm.org/D11879
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Apparently if you make a typo in the argument to CMAKE_BUILD_TYPE,
cmake silently accepts this but doesn't apply any particular build
type to your build. This means you get a build that doesn't really
make any sense - it's sort of a debug build with asserts disabled.
Error out instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244406 91177308-0d34-0410-b5e6-96231b3b80d8
Seq.emplace_back(Seq.back());
does not work as planned, since Seq.back() may become a dangling reference
when emplace_back is called and possibly reallocates vector. To avoid this,
the vector allocation should be reserved first and only then used.
This broke test/tools/dsymutil/X86/custom-line-table.test with Visual C++ 2013.
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