832777 - IonMonkey: Load & Store 2 doubles / values to & from xmm registers

Status: NEW

(Core :: JavaScript Engine: JIT, defect, P5)

Description

[Nicolas B. Pierron [:nbp]]

Implement the following instruction in X86Assembler, and reflect them in the Ion Assembler:
  movapd r, m   ; load 128 bits from memory
  movapd m, r   ; store 128 bits to the memory
  movddup r, m  ; load 64 bits (x) and duplicate it in the 128 bits register (x, x)

Even if this is not a huge matter, we should probably create a new variant of FloatRegisters named Packed64Registers, such as we can use C++ type information to prevent errors.

Comment 1

[Nicolas B. Pierron [:nbp]]

Attachment: Add movapd instructions.