[mirror_qemu.git] / tcg / TODO

- test macro system

- test conditional jumps

- test mul, div, ext8s, ext16s, bswap

- generate a global TB prologue and epilogue to save/restore registers
  to/from the CPU state and to reserve a stack frame to optimize
  helper calls. Modify cpu-exec.c so that it does not use global
  register variables (except maybe for 'env').

- fully convert the x86 target. The minimal amount of work includes:
  - add cc_src, cc_dst and cc_op as globals
  - disable its eflags optimization (the liveness analysis should
    suffice)
  - move complicated operations to helpers (in particular FPU, SSE, MMX).

- optimize the x86 target:
  - move some or all the registers as globals
  - use the TB prologue and epilogue to have QEMU target registers in
    pre assigned host registers.

Ideas:

- Move the slow part of the qemu_ld/st ops after the end of the TB.

- Experiment: change instruction storage to simplify macro handling
  and to handle dynamic allocation and see if the translation speed is
  OK.

- change exception syntax to get closer to QOP system (exception
  parameters given with a specific instruction).
Commit	Line	Data
c896fe29 FB	1	- test macro system
	2
	3	- test conditional jumps
	4
	5	- test mul, div, ext8s, ext16s, bswap
	6
	7	- generate a global TB prologue and epilogue to save/restore registers
	8	to/from the CPU state and to reserve a stack frame to optimize
	9	helper calls. Modify cpu-exec.c so that it does not use global
	10	register variables (except maybe for 'env').
	11
	12	- fully convert the x86 target. The minimal amount of work includes:
	13	- add cc_src, cc_dst and cc_op as globals
	14	- disable its eflags optimization (the liveness analysis should
	15	suffice)
	16	- move complicated operations to helpers (in particular FPU, SSE, MMX).
	17
	18	- optimize the x86 target:
	19	- move some or all the registers as globals
	20	- use the TB prologue and epilogue to have QEMU target registers in
	21	pre assigned host registers.
	22
	23	Ideas:
	24
	25	- Move the slow part of the qemu_ld/st ops after the end of the TB.
	26
	27	- Experiment: change instruction storage to simplify macro handling
	28	and to handle dynamic allocation and see if the translation speed is
	29	OK.
	30
	31	- change exception syntax to get closer to QOP system (exception
	32	parameters given with a specific instruction).