This is the next step towards preventing compiler from directly peeking
into runtime and instead interact with runtime through a well defined
surface. The goal of the refactoring to locate all places where compiler
accesses some runtime information and partion those accesses into two
categories:
- creating objects in the host runtime (e.g. allocating strings, numbers, etc)
during compilation;
- accessing properties of the target runtime (e.g. offsets of fields) to
embed those into the generated code;
This change introduces dart::compiler and dart::compiler::target namespaces.
All code in the compiler will gradually be moved into dart::compiler namespace.
One of the motivations for this change is to be able to prevent access to
globally defined host constants like kWordSize by shadowing them in the
dart::compiler namespace.
The nested namespace dart::compiler::target hosts all information about
target runtime that compiler could access, e.g. compiler::target::kWordSize
defines word size of the target which will eventually be made different
from the host kWordSize (defined by dart::kWordSize).
The API for compiler to runtime interaction is placed into compiler_api.h.
Note that we still permit runtime to access compiler internals directly -
this is not going to be decoupled as part of this work.
Issue https://github.com/dart-lang/sdk/issues/31709
Change-Id: If4396d295879391becfa6c38d4802bbff81f5b20
Reviewed-on: https://dart-review.googlesource.com/c/90242
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
i.e. #ifndef VM_WHATEVER -> #ifndef RUNTIME_VM_WHATEVER
This lets us remove a hack from the PRESUBMIT.py script that existed
for reasons that are no longer valid, and sets us up to add some
presubmit checks for the GN build.
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/2450713004 .
Changes:
* Register allocator now allocates GPRs for kUnboxedMint.
* Register allocator supports for SameAsFirstInput for register pairs.
* Register allocator properly handles register pairs in environment uses and materialization uses.
* BoxInteger updated on IA32/ARM.
* UnboxInteger updated on IA32/ARM.
* BinaryMintOp updated on IA32/ARM.
* ShiftMintOp updated on IA32/ARM.
* UnaryMintOp updated on IA32/ARM.
* RelationalOp updated on IA32/ARM.
* EqualityCompare updated on IA32/ARM.
* LoadIndexed and StoreIndexed updated on IA32/ARM.
* New Deopt instructions added.
* Update live_registers when an instruction has a fixed register input and a call on the slow path.
* Improve printing of register pairs in flow graph.
* Do not assume live registers in slow paths contain tagged values.
* LiveRange pairs for kUnboxedMint definitions marked as kUntagged representation (reduces stack usage).
* Live register spilling on ARM uses same register order as stack map encoding.
* Spill slots containing tagged and untagged are segregated.
* Print stack maps when printing live ranges with safe points.
* Print allocated spill slot when printing live ranges.
Status:
* IA32 completed. All tests are passing.
* ARM completed. All tests passing.
R=fschneider@google.com, srdjan@google.com, zra@google.com
Review URL: https://codereview.chromium.org//252333002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@36468 260f80e4-7a28-3924-810f-c04153c831b5
Vyacheslav Egorov