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JIT: flush a register if it won't be used for the rest of the block

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This should dramatically reduce code size in the case of blocks with
lots of branches, and certainly doesn't hurt elsewhere either.

This can probably be improved a good bit through smarter tracking of register
usage, e.g. discarding registers that are going to be overwritten, but this
is a good start and should help reduce code size and register pressure.
Unlike that sort of change, this is a "safe" patch; it only flushes registers,
which can't affect correctness, unlike actually discarding data.

As part of this, refactor PPCAnalyst to support distinguishing between
float and integer registers (to properly handle instructions that access
both, like floating-point loads and stores).

Also update every instruction in the interpreter flags table I could find
that didn't have all the correct flags.
This commit is contained in:
Fiora
2014-09-13 05:34:38 -07:00
parent 7f1185b941
commit f103234e2b
5 changed files with 191 additions and 127 deletions
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17
Source/Core/Core/PowerPC/PPCTables.h
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@ -24,6 +24,8 @@ enum
FL_IN_C = (1<<11),
FL_IN_S = (1<<12),
FL_IN_AB = FL_IN_A | FL_IN_B,
FL_IN_AC = FL_IN_A | FL_IN_C,
FL_IN_ABC = FL_IN_A | FL_IN_B | FL_IN_C,
FL_IN_SB = FL_IN_S | FL_IN_B,
FL_IN_A0B = FL_IN_A0 | FL_IN_B,
FL_IN_A0BC = FL_IN_A0 | FL_IN_B | FL_IN_C,
@ -39,6 +41,18 @@ enum
FL_SET_FPRF = (1<<20),
FL_READ_FPRF = (1<<21),
FL_SET_OE = (1<<22),
FL_IN_FLOAT_A = (1<<23),
FL_IN_FLOAT_B = (1<<24),
FL_IN_FLOAT_C = (1<<25),
FL_IN_FLOAT_S = (1<<26),
FL_IN_FLOAT_D = (1<<27),
FL_IN_FLOAT_AB = FL_IN_FLOAT_A | FL_IN_FLOAT_B,
FL_IN_FLOAT_AC = FL_IN_FLOAT_A | FL_IN_FLOAT_C,
FL_IN_FLOAT_ABC = FL_IN_FLOAT_A | FL_IN_FLOAT_B | FL_IN_FLOAT_C,
FL_OUT_FLOAT_D = (1<<28),
FL_OUT_FLOAT_S = (1<<29),
// Used in the case of double ops (they don't modify the top half of the output)
FL_INOUT_FLOAT_D = FL_IN_FLOAT_D | FL_OUT_FLOAT_D,
};
enum
@ -54,7 +68,8 @@ enum
OPTYPE_STORE ,
OPTYPE_LOADFP ,
OPTYPE_STOREFP ,
OPTYPE_FPU ,
OPTYPE_DOUBLEFP,
OPTYPE_SINGLEFP,
OPTYPE_PS ,
OPTYPE_DCACHE ,
OPTYPE_ICACHE ,