piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-25 23:29:55 -06:00
Code Issues Packages Projects Releases Wiki Activity

optimise away unneeded flag sets

Browse Source 
- especially useful for thumb code and larger max block sizes
- can still be improved upon
This commit is contained in:
RSDuck
2019-08-25 12:28:48 +02:00
parent 03ab7f1645
commit 5ea91b8a03
8 changed files with 243 additions and 104 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
src/ARMJIT_x64/ARMJIT_Compiler.cpp
View File

@ -342,6 +342,11 @@ const Compiler::CompileFunc T_Comp[ARMInstrInfo::tk_Count] = {
};
#undef F
bool Compiler::CanCompile(bool thumb, u16 kind)
{
return (thumb ? T_Comp[kind] : A_Comp[kind]) != NULL;
}
void Compiler::Reset()
{
memset(ResetStart, 0xcc, CodeMemSize);
@ -380,11 +385,15 @@ CompiledBlock Compiler::CompileBlock(ARM* cpu, FetchedInstr instrs[], int instrs
// TODO: this is ugly as a whole, do better
RegCache = RegisterCache<Compiler, X64Reg>(this, instrs, instrsCount);
printf("block start %d\n", Thumb);
for (int i = 0; i < instrsCount; i++)
{
R15 += Thumb ? 2 : 4;
CurInstr = instrs[i];
printf("%x %d %d %d\n", CurInstr.Instr, CurInstr.SetFlags, CurInstr.Info.WriteFlags, CurInstr.Info.ReadFlags);
CompileFunc comp = Thumb
? T_Comp[CurInstr.Info.Kind]
: A_Comp[CurInstr.Info.Kind];