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Change-Id: I9956091775cedc609fdae7dec1433fcb8858a477
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- transform AddStackMapEntry into BeginStackMapEntry/EndStackMapEntry.
This allows for nicer code and less assumptions when searching for equal
dex register maps.
- store the components sizes and their start positions as fields to
avoid re-computation.
- store the current stack map entry as a field to avoid the copy
semantic when updating its value in the stack maps array.
- remove redundant methods and fix visibility for the remaining ones.
Change-Id: Ica2d2969d7e15993bdbf8bc41d9df083cddafd24
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dex_pc, native_pc_offset, dex_register_map_offset, inline_info_offset,
and register_mask can now be encoded in 1, 2, 3, or 4 bytes.
Change-Id: I15f93e8226ce374204d44c5a80a9fd89bda2687c
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- For each CodeInfo object (i.e. for each method), compute a
variable index size location catalog of unique Dex
register locations. In Dex register maps, instead of
storing the actual location of a (live) Dex register,
store the index of the location catalog entry containing
that Dex register location.
- Adjust art::StackMapStream,
art::CheckReferenceMapVisitor::CheckOptimizedMethod,
art::StackVisitor::GetVRegFromOptimizedCode, and
art::StackVisitor::SetVRegFromOptimizedCode.
- Add LoadBits and StoreBits methods to art::MemoryRegion
to load and store a block of adjacent bits in a memory
region.
- Update compiler/optimizing/stack_map_test.cc.
- Remove the default value for parameter EmptyFn of
art::HashMap. This default value did not seem to make
sense, as it would create an "empty function" for type Key
by default, whereas art::HashMap expects an "empty
function" for type std::pair<Key, Value>.
Change-Id: Id9e49d7756c253ce41c36630cd832208d06c2e28
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If two stack maps have the same dex register map then one of them will
reference the register map from the other instead of owning an
independent copy.
This saves around 1.5% of space.
Change-Id: Ic2c2c81210c6c45a5c5f650f7ba82a46ff6f45e4
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First step towards the compression of the StackMap (not
the DexRegisterMap). Next step will be to just use what is
needed (instead of byte -> word).
Change-Id: I4f81b2d05bf5cc508585e16fbbed1bafbc850e2e
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Change-Id: Id9aafcc13c1a085c17ce65d704c67b73f9de695d
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- moved environment recording from code generator to stack map stream
- added creation/loading factory methods for the DexRegisterMap (hides
internal details)
- added new tests
Change-Id: Ic8b6d044f0d8255c6759c19a41df332ef37876fe
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- Replace the current list-based (fixed-size) Dex register
encoding in stack maps emitted by the optimizing compiler
with another list-based variable-size Dex register
encoding compressing short locations on 1 byte (3 bits for
the location kind, 5 bits for the value); other (large)
values remain encoded on 5 bytes.
- In addition, use slot offsets instead of byte offsets to
encode the location of Dex registers placed in stack
slots at small offsets, as it enables more values to use
the short (1-byte wide) encoding instead of the large
(5-byte wide) one.
- Rename art::DexRegisterMap::LocationKind as
art::DexRegisterLocation::Kind, turn it into a
strongly-typed enum based on a uint8_t, and extend it to
support new kinds (kInStackLargeOffset and
kConstantLargeValue).
- Move art::DexRegisterEntry from
compiler/optimizing/stack_map_stream.h to
runtime/stack_map.h and rename it as
art::DexRegisterLocation.
- Adjust art::StackMapStream,
art::CodeGenerator::RecordPcInfo,
art::CheckReferenceMapVisitor::CheckOptimizedMethod,
art::StackVisitor::GetVRegFromOptimizedCode, and
art::StackVisitor::SetVRegFromOptimizedCode.
- Implement unaligned memory accesses in art::MemoryRegion.
- Use them to manipulate data in Dex register maps.
- Adjust oatdump to support the new Dex register encoding.
- Update compiler/optimizing/stack_map_test.cc.
Change-Id: Icefaa2e2b36b3c80bb1b882fe7ea2f77ba85c505
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Change-Id: I6f8c3186683210a5162cbf4f15361a4c494495c9
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A few elements are not displayed yet (stack mask, inline info) though.
Change-Id: I5e51a801c580169abc5d1ef43ad581aadc110754
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Now most of the methods supported by the compiler can be optimized,
instead of using the baseline.
Change-Id: I80ab36a34913fa4e7dd576c7bf55af63594dc1fa
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Encodes stack mask, register mask, dex register values, and inlining
info. The encoding is currently very straightforward: there is no
clever encoding, nor compression.
Change-Id: I5fd9ae28189a5513cd9e3c8d52c648463207643d
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