Closed Bug 832712 Opened 12 years ago Closed 2 years ago

IonMonkey: Reduce x64 code size by using "rbx" instead of "r11" as the scratch register.

Categories

(Core :: JavaScript Engine, defect)

Product:
Core
Component:
JavaScript Engine
Platform:
x86_64
All
Type:
defect

Tracking

()

Status:
RESOLVED WONTFIX

People

(Reporter: nbp, Unassigned)

Details

Everytime a register such as r8-r15 is used on x64 assembly, the assembler need to produce an extended instruction which consume an extra byte in the generated code. We can easily win a few bytes per LInstruction by doing so.
Assignee: general → nobody
Severity: normal → S3
Status: NEW → RESOLVED
Closed: 2 years ago
Resolution: --- → WONTFIX
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