MachineType is now a class with two enum fields:
- MachineRepresentation
- MachineSemantic
Both enums are usable on their own, and this change switches some places from using MachineType to use just MachineRepresentation. Most notably:
- register allocator now uses just the representation.
- Phi and Select nodes only refer to representations.
Review URL: https://codereview.chromium.org/1513543003
Cr-Commit-Position: refs/heads/master@{#32738}
Add factory methods for different types of LinkageLocations, and ensure that
accesses to the underlying data in the location are classified by type and
funneled through explicit accessors.
Also change the representation of LinkageLocation to use a BitField rather
than using a reserved section of the integer range.
Review URL: https://codereview.chromium.org/1262343002
Cr-Commit-Position: refs/heads/master@{#29938}
This change makes possible to save and restore the FP registers
in the Prologue and Return parts for the CallAddress kind functions.
TEST=test-simplified-lowering/RunNumberDivide_2_TruncatingToUint32,
test-simplified-lowering/RunNumberMultiply_TruncatingToUint32
Review URL: https://codereview.chromium.org/1191513003
Cr-Commit-Position: refs/heads/master@{#29378}
This is needed in order to allow expansion of a throwing node into a
set of nodes that produce different effects for the successful and the
exceptional continuation.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1179543002
Cr-Commit-Position: refs/heads/master@{#28918}
This introduces a conservative prediction for each exception handler
whether it will locally catch an exception or re-throw it to outside
the code bondaries. It will allow for a more intuitive prediction of
whether an exception is considered "caught" or "uncaught".
R=bmeurer@chromium.org,yangguo@chromium.org
BUG=chromium:492522
LOG=N
Review URL: https://codereview.chromium.org/1158563008
Cr-Commit-Position: refs/heads/master@{#28681}
This simplifies the handling of the End node. Based on this CL we will
finally fix terminating every loop from the beginning (via Terminate
nodes) and fix inlining of Throw, Deoptimize and Terminate.
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1157023002
Cr-Commit-Position: refs/heads/master@{#28620}
Tail calls are matched on the graph, with a dedicated tail call
optimization that is actually testable. The instruction selection can
still fall back to a regular if the platform constraints don't allow to
emit a tail call (i.e. the return locations of caller and callee differ
or the callee takes non-register parameters, which is a restriction that
will be removed in the future).
Also explicitly limit tail call optimization to stubs for now and drop
the global flag.
BUG=v8:4076
LOG=n
Review URL: https://codereview.chromium.org/1114163005
Cr-Commit-Position: refs/heads/master@{#28219}
