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- implemented code generation for stack variables.

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- fixed code generation for using local variables as array index. This must use a different register for the array element offset because the original register may not be overwritten.
This commit is contained in:
Christoph Oelckers 2016-11-17 16:44:41 +01:00
parent d86f03e2e0
commit 2cc48ec378
9 changed files with 310 additions and 96 deletions
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16
src/scripting/vm/vmbuilder.h
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@ -3,6 +3,19 @@
#include "dobject.h"
class VMFunctionBuilder;
struct ExpEmit
{
ExpEmit() : RegNum(0), RegType(REGT_NIL), RegCount(1), Konst(false), Fixed(false), Final(false), Target(false) {}
ExpEmit(int reg, int type, bool konst = false, bool fixed = false) : RegNum(reg), RegType(type), RegCount(1), Konst(konst), Fixed(fixed), Final(false), Target(false) {}
ExpEmit(VMFunctionBuilder *build, int type, int count = 1);
void Free(VMFunctionBuilder *build);
void Reuse(VMFunctionBuilder *build);
BYTE RegNum, RegType, RegCount, Konst:1, Fixed : 1, Final : 1, Target : 1;
};
class VMFunctionBuilder
{
public:
@ -63,6 +76,9 @@ public:
// amount of implicit parameters so that proper code can be emitted for method calls
int NumImplicits;
// keep the frame pointer, if needed, in a register because the LFP opcode is hideously inefficient, requiring more than 20 instructions on x64.
ExpEmit FramePointer;
private:
struct AddrKonst
{