| Commit message (Collapse) | Author | Age |
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Constant::IsThreadDependent(): Use dyn_cast<Constant> instead of cast
It turns out that the operands of a Constant are not always themselves
Constant. For example, one of the operands of BlockAddress is
BasicBlock, which is not a Constant.
This should fix the dragonegg-x86_64-linux-gcc-4.6-test build which
broke in r168037.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_32@168193 91177308-0d34-0410-b5e6-96231b3b80d8
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Make GlobalOpt be conservative with TLS variables (PR14309)
For global variables that get the same value stored into them
everywhere, GlobalOpt will replace them with a constant. The problem is
that a thread-local GlobalVariable looks like one value (the address of
the TLS var), but is different between threads.
This patch introduces Constant::isThreadDependent() which returns true
for thread-local variables and constants which depend on them (e.g. a GEP
into a thread-local array), and teaches GlobalOpt not to track such
values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_32@168192 91177308-0d34-0410-b5e6-96231b3b80d8
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command. Bleh, sorry about this!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166596 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166591 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160159 91177308-0d34-0410-b5e6-96231b3b80d8
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since then the entire expression must equal zero (similarly for other operations
with an absorbing element). With this in place a bunch of reassociate code for
handling constants is dead since it is all taken care of when linearizing. No
intended functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158398 91177308-0d34-0410-b5e6-96231b3b80d8
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topologies, it is quite possible for a leaf node to have huge multiplicity, for
example: x0 = x*x, x1 = x0*x0, x2 = x1*x1, ... rapidly gives a value which is x
raised to a vast power (the multiplicity, or weight, of x). This patch fixes
the computation of weights by correctly computing them no matter how big they
are, rather than just overflowing and getting a wrong value. It turns out that
the weight for a value never needs more bits to represent than the value itself,
so it is enough to represent weights as APInts of the same bitwidth and do the
right overflow-avoiding dance steps when computing weights. As a side-effect it
reduces the number of multiplies needed in some cases of large powers. While
there, in view of external uses (eg by the vectorizer) I made LinearizeExprTree
static, pushing the rank computation out into users. This is progress towards
fixing PR13021.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158358 91177308-0d34-0410-b5e6-96231b3b80d8
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much. This gets us an addition 0.9% on 445.gobmk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149952 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149849 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149848 91177308-0d34-0410-b5e6-96231b3b80d8
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but with a critical fix to the SelectionDAG code that optimizes copies
from strings into immediate stores: the previous code was stopping reading
string data at the first nul. Address this by adding a new argument to
llvm::getConstantStringInfo, preserving the behavior before the patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149800 91177308-0d34-0410-b5e6-96231b3b80d8
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test to fail.
These are:
r149348
r149351
r149352
r149354
r149356
r149357
r149361
r149362
r149364
r149365
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149470 91177308-0d34-0410-b5e6-96231b3b80d8
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ConstantDataArray::getString instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149365 91177308-0d34-0410-b5e6-96231b3b80d8
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methods and constant fold the clients to false.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149362 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149357 91177308-0d34-0410-b5e6-96231b3b80d8
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kicking in the big win of ConstantDataArray. As part of this, change
the implementation of GetConstantStringInfo in ValueTracking to work
with ConstantDataArray (and not ConstantArray) making it dramatically,
amazingly, more efficient in the process and renaming it to
getConstantStringInfo.
This keeps around a GetConstantStringInfo entrypoint that (grossly)
forwards to getConstantStringInfo and constructs the std::string
required, but existing clients should move over to
getConstantStringInfo instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149351 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149255 91177308-0d34-0410-b5e6-96231b3b80d8
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to be formed whenever ConstantVector::get is used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149226 91177308-0d34-0410-b5e6-96231b3b80d8
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we should (theoretically optimize and codegen ConstantDataVector as well
as ConstantVector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149116 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149077 91177308-0d34-0410-b5e6-96231b3b80d8
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ConstantExpr::getWithOperandReplaced and ConstantExpr::replaceUsesOfWithOnConstant
in terms of ConstantExpr::getWithOperands. While we're at it,
make sure that ConstantExpr::getWithOperands covers all instructions: it was
missing insert/extractvalue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149076 91177308-0d34-0410-b5e6-96231b3b80d8
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more robust) ways to do what it was doing now. Also, add static methods
for decoding a ShuffleVector mask.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149028 91177308-0d34-0410-b5e6-96231b3b80d8
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ConstantVector. Fix some outright bugs in the implementation of
ConstantArray and Constant struct, which would cause us to not make
one big UndefValue when asking for an array/struct with all undef
elements. Enhance Constant::isAllOnesValue to work with
ConstantDataVector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149021 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149006 91177308-0d34-0410-b5e6-96231b3b80d8
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helper method for the common operation of extracting an element
out of a constant aggregate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148931 91177308-0d34-0410-b5e6-96231b3b80d8
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"Introduce a new ConstantVector::getSplat constructor function to
simplify a really common case."
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148924 91177308-0d34-0410-b5e6-96231b3b80d8
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in asserts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148910 91177308-0d34-0410-b5e6-96231b3b80d8
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Original log:
Introduce a new ConstantVector::getSplat constructor function to
simplify a really common case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148906 91177308-0d34-0410-b5e6-96231b3b80d8
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simplify a really common case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148901 91177308-0d34-0410-b5e6-96231b3b80d8
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did something extremely surprising, and shadowed actually useful
implementations that had completely different behavior.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148898 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148805 91177308-0d34-0410-b5e6-96231b3b80d8
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add a ConstantDataArray::getString method that corresponds to the (to be
removed) StringRef version of ConstantArray::get, but is dramatically more
efficient.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148804 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148802 91177308-0d34-0410-b5e6-96231b3b80d8
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and clean up some other misc stuff. Unlike ConstantArray, we will
prefer to emit .fill directives for "String" arrays that all have
the same value, since they are denser than emitting a .ascii
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148793 91177308-0d34-0410-b5e6-96231b3b80d8
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same semantics as ConstantArray's but much more efficient because they
don't have to return std::string's. The ConstantArray methods will
eventually be removed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148792 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148790 91177308-0d34-0410-b5e6-96231b3b80d8
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Make some CDS methods public.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148785 91177308-0d34-0410-b5e6-96231b3b80d8
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No need for 'getOperand' :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148778 91177308-0d34-0410-b5e6-96231b3b80d8
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classes, per PR1324. Not all of their helper functions are implemented,
nothing creates them, and the rest of the compiler doesn't handle them yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148741 91177308-0d34-0410-b5e6-96231b3b80d8
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using OwningPtr. OwningPtr would barf when the densemap had to reallocate,
which doesn't appear to happen on the regression test suite, but obviously
happens in real life :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148700 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148698 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148693 91177308-0d34-0410-b5e6-96231b3b80d8
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Now that the type system rewrite has landed, there is no need for its
complexity and std::map'ness.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148691 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148578 91177308-0d34-0410-b5e6-96231b3b80d8
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http://llvm.org/docs/CodingStandards.html#ll_virtual_anch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146960 91177308-0d34-0410-b5e6-96231b3b80d8
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"half precision" floating-point with a first-class type.
This patch adds basic IR support (but not codegen support).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146786 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145801 91177308-0d34-0410-b5e6-96231b3b80d8
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simplify it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144555 91177308-0d34-0410-b5e6-96231b3b80d8
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assert(!"error message");
To:
assert(0 && "error message");
which is more consistant across the code base.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140234 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138469 91177308-0d34-0410-b5e6-96231b3b80d8
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