Rename WeakVH to WeakTrackingVH; NFC

This relands r301424.

llvm-svn: 301812

InferAddressSpaces: Search constant expressions for addrspacecasts

These are pretty common when using local memory, and the 64-bit generic
addressing is much more expensive to compute.

llvm-svn: 30

InferAddressSpaces: Search constant expressions for addrspacecasts

These are pretty common when using local memory, and the 64-bit generic
addressing is much more expensive to compute.

llvm-svn: 301711

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InferAddressSpaces: Avoid looking up deleted values

While looking at pure addressing expressions, it's possible
for the value to appear later in Postorder.

I haven't been able to come up with a tes

InferAddressSpaces: Avoid looking up deleted values

While looking at pure addressing expressions, it's possible
for the value to appear later in Postorder.

I haven't been able to come up with a testcase where this
exhibits an actual issue, but if you insert a dump before
the value map lookup, a few testcases crash.

llvm-svn: 301705

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InferAddressSpaces: Infer from just addrspacecasts

Eliminates some more cases where some subset of the addressing
computation remains flat. Some cases with addrspacecasts
in nested constant expressi

InferAddressSpaces: Infer from just addrspacecasts

Eliminates some more cases where some subset of the addressing
computation remains flat. Some cases with addrspacecasts
in nested constant expressions are still left behind however.

llvm-svn: 301704

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InferAddressSpaces: Use reference arguments instead of pointers

llvm-svn: 301276

InferAddressSpaces: Remove redundant assert

This is just asserting all the operations are handled in the
switch, which the unreachable already handles.

llvm-svn: 301270

InferAddressSpaces: Infer for just GEPs

Fixes leaving intermediate flat addressing computations
where a GEP instruction's source is a constant expression.

Still leaves behind a trivial addrspacecas

InferAddressSpaces: Infer for just GEPs

Fixes leaving intermediate flat addressing computations
where a GEP instruction's source is a constant expression.

Still leaves behind a trivial addrspacecast + gep pair that
instcombine is able to handle, which ideally could be folded
here directly.

llvm-svn: 301044

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AMDGPU: Add all atomicrmw fields to atomic.inc/dec

Add scope, order, isVolatile

llvm-svn: 299122

Bug 31948: Fix assertion when bitcasting constantexpr pointers

llvm-svn: 295387

InferAddressSpaces: Handle more cases with constant select operands

llvm-svn: 293859

InferAddressSpaces: clang-format some things

llvm-svn: 293843

InferAddressSpaces: Handle select

This fails to handle some cases where one of the inputs is
a constant to be fixed in a later commit.

llvm-svn: 293723

InferAddressSpaces: Remove dead declaration

llvm-svn: 293720

InferAddressSpaces: Avoid double map lookup

llvm-svn: 293719

InferAddressSpaces: Fix broken casting of constants

llvm-svn: 293718

InferAddressSpaces: Rename constant

llvm-svn: 293594

InferAddressSpaces: Handle icmp

llvm-svn: 293593

InferAddressSpaces: Support memory intrinsics

llvm-svn: 293587

InferAddressSpaces: Support atomics

llvm-svn: 293584

InferAddressSpaces: Don't replace volatile users

llvm-svn: 293582

NVPTX: Move InferAddressSpaces to generic code

llvm-svn: 293579