Commit Graph

7 Commits

Author SHA1 Message Date
oth
303d340f66 [interpreter] Minor clean-up of BytecodeSourceInfo.
Add explicit state in BytecodeSourceInfo to simplify checks for
validity and whether a statement or expression position.

Remove BytecodeSourceInfo::Update which inherited rules for updating
source position information during bytecode building.

BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/2048203002
Cr-Commit-Position: refs/heads/master@{#37136}
2016-06-21 11:12:31 +00:00
oth
85882a6320 [interpreter] Remove OperandScale from front stages of pipeline.
BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/2041913002
Cr-Commit-Position: refs/heads/master@{#36885}
2016-06-10 10:36:38 +00:00
rmcilroy
de9d1d8bc6 [Interpreter] Move jump processing to bytecode array writer.
This moves processing of jumps out of bytecode array builder and into
bytecode array writer. This simplifies the pipeline by avoiding having
to flush for offset and patch up offsets in bytecode array builder based
on what was emitted by the bytecode array writer.

This also enables future refactorings to add dead code elimination back
into the pipeline, and move processing of scalable operand sizes to the
end of the pipeline (in the bytecode array writer) rather than having to
deal with scalable operand types throughout pipeline.

BUG=v8:4280,chromium:616064

Review-Url: https://codereview.chromium.org/2035813002
Cr-Commit-Position: refs/heads/master@{#36716}
2016-06-03 14:53:23 +00:00
oth
31c77b13df [interpreter] Address naming inconsistencies in bytecodes.
BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/2007023003
Cr-Commit-Position: refs/heads/master@{#36509}
2016-05-25 10:47:29 +00:00
oth
25b3fe7961 [interpreter] Introduce fused bytecodes for common sequences.
This change introduces five fused bytecodes for common bytecode
sequences on popular websites. These are LdrNamedProperty,
LdrKeyedProperty, LdrGlobal, LdrContextSlot, and LdrUndefined. These
load values into a destination register operand instead of the
accumulator. They are emitted by the peephole optimizer.

BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/1985753002
Cr-Commit-Position: refs/heads/master@{#36507}
2016-05-25 09:56:49 +00:00
rmcilroy
8352ad50e6 [Interpreter] Change LogicalNot to ToBooleanLogicalNot and add non-ToBoolean version.
Makes LogicalNot bytecode not do the ToBoolean operation, and add support in the
peephole optimizer to choose between the appropriate bytecode depending upon
whether the previous bytecode emitted a boolean or not.

BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/1985033002
Cr-Commit-Position: refs/heads/master@{#36295}
2016-05-17 20:41:04 +00:00
oth
02b7373ab1 [interpreter] Introduce bytecode generation pipeline.
This change introduces a pipeline for the final stages of
bytecode generation.

The peephole optimizer is made distinct from the BytecodeArrayBuilder.

A new BytecodeArrayWriter is responsible for writing bytecode. It
also keeps track of the maximum register seen and offers a potentially
smaller frame size.

R=rmcilroy@chromium.org
LOG=N
BUG=v8:4280

Review-Url: https://codereview.chromium.org/1947403002
Cr-Commit-Position: refs/heads/master@{#36220}
2016-05-12 19:20:04 +00:00