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PPC: Add tonumber() and tostring() fast functions.

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This commit is contained in:
Mike Pall 2010-10-05 01:43:22 +02:00
parent 08ac8b0c96
commit 2f5f6290e7
1 changed files with 48 additions and 4 deletions
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52
src/buildvm_ppc.dasc
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@ -908,7 +908,10 @@ static void build_subroutines(BuildCtx *ctx)
|.endmacro
|
|.macro ffgccheck
| NYI
| lwz TMP0, DISPATCH_GL(gc.total)(DISPATCH)
| lwz TMP1, DISPATCH_GL(gc.threshold)(DISPATCH)
| cmplw TMP0, TMP1
| bgel ->fff_gcstep
|.endmacro
|
|//-- Base library: checks -----------------------------------------------
@ -1029,10 +1032,38 @@ static void build_subroutines(BuildCtx *ctx)
|//-- Base library: conversions ------------------------------------------
|
|.ffunc tonumber
| NYI
| // Only handles the number case inline (without a base argument).
| cmplwi NARGS8:RC, 8
| evldd CARG1, 0(BASE)
| bne ->fff_fallback // Exactly one argument.
| checknum CARG1
| checkok ->fff_restv
| b ->fff_fallback
|
|.ffunc_1 tostring
| NYI
| // Only handles the string or number case inline.
| checkstr CARG1
| // A __tostring method in the string base metatable is ignored.
| checkok ->fff_restv // String key?
| // Handle numbers inline, unless a number base metatable is present.
| lwz TMP0, DISPATCH_GL(gcroot[GCROOT_BASEMT_NUM])(DISPATCH)
| checknum CARG1
| cmplwi cr1, TMP0, 0
| stw BASE, L->base // Add frame since C call can throw.
|.if SPE
| crand 4*cr0+eq, 4*cr0+lt, 4*cr1+eq
|.else
|.error "NYI"
|.endif
| stw PC, SAVE_PC // Redundant (but a defined value).
| bne ->fff_fallback
| ffgccheck
| mr CARG1, L
| mr CARG2, BASE
| bl extern lj_str_fromnum // (lua_State *L, lua_Number *np)
| // Returns GCstr *.
| evmergelo STR:CRET1, TISSTR, STR:CRET1
| b ->fff_restv
|
|//-- Base library: iterators -------------------------------------------
|
@ -1405,7 +1436,20 @@ static void build_subroutines(BuildCtx *ctx)
| b <1
|
|->fff_gcstep: // Call GC step function.
| NYI
| // BASE = new base, RC = nargs*8
| mflr SAVE0
| stw BASE, L->base
| add TMP0, BASE, NARGS8:RC
| stw PC, SAVE_PC // Redundant (but a defined value).
| stw TMP0, L->top
| mr CARG1, L
| bl extern lj_gc_step // (lua_State *L)
| lwz BASE, L->base
| mtlr SAVE0
| lwz TMP0, L->top
| sub NARGS8:RC, TMP0, BASE
| lwz CFUNC:RB, FRAME_FUNC(BASE)
| blr
|
|//-----------------------------------------------------------------------
|//-- Special dispatch targets -------------------------------------------