Open Bug 679891 Opened 13 years ago Updated 2 years ago

IonMonkey: register allocation optimizations for ARM

Categories

(Core :: JavaScript Engine, defect)

ARM
Linux
defect

Tracking

()

People

(Reporter: mjrosenb, Unassigned)

References

Details

(Whiteboard: [ion:t])

Similar to: 588033
There are many cases where it would be useful to allocate several values to consecutive registers, or ascending registers.  In addition to the LDRD and STRD, there are instructions: LDM and STM which will move a subset of registers to consecutive memory locations, such as
stm sp, {r0,r1,r4,r5,r7,lr}
which will store 5 registers and the link register onto the stack in (If the stack was 64-bit aligned) 3 or 4 cycles
Assignee: general → nobody
Summary: IonMonkey: lsra optimizations for ARM → IonMonkey: register allocation optimizations for ARM
Severity: normal → S3
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