IonMonkey: register allocation optimizations for ARM

NEW
Unassigned

Status

()

Core
JavaScript Engine
7 years ago
3 years ago

People

(Reporter: mjrosenb, Unassigned)

Tracking

(Blocks: 1 bug)

Firefox Tracking Flags

(Not tracked)

Details

(Whiteboard: [ion:t])

(Reporter)

Description

7 years ago
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
Whiteboard: [ion:t]
Blocks: 896808
(Assignee)

Updated

4 years ago
Assignee: general → nobody

Updated

3 years ago
Summary: IonMonkey: lsra optimizations for ARM → IonMonkey: register allocation optimizations for ARM
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