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JIT: unify two branches in SafeLoadToReg. 

Should behave the same as it did before.
This commit is contained in:
magumagu 2014-05-25 19:41:46 -07:00
parent 68a327c246
commit e5ebf22161
1 changed files with 31 additions and 61 deletions
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92
Source/Core/Core/PowerPC/JitCommon/Jit_Util.cpp
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@ -358,74 +358,44 @@ void EmuCodeBlock::SafeLoadToReg(X64Reg reg_value, const Gen::OpArg & opAddress,
}
else
{
OpArg addr_loc = opAddress;
if (offset)
{
addr_loc = R(EAX);
MOV(32, R(EAX), opAddress);
ADD(32, R(EAX), Imm32(offset));
TEST(32, R(EAX), Imm32(mem_mask));
FixupBranch fast = J_CC(CC_Z, true);
ABI_PushRegistersAndAdjustStack(registersInUse, false);
switch (accessSize)
{
case 32: ABI_CallFunctionR((void *)&Memory::Read_U32, EAX); break;
case 16: ABI_CallFunctionR((void *)&Memory::Read_U16_ZX, EAX); break;
case 8: ABI_CallFunctionR((void *)&Memory::Read_U8_ZX, EAX); break;
}
ABI_PopRegistersAndAdjustStack(registersInUse, false);
MEMCHECK_START
if (signExtend && accessSize < 32)
{
// Need to sign extend values coming from the Read_U* functions.
MOVSX(32, accessSize, reg_value, R(EAX));
}
else if (reg_value != EAX)
{
MOVZX(32, accessSize, reg_value, R(EAX));
}
MEMCHECK_END
FixupBranch exit = J();
SetJumpTarget(fast);
UnsafeLoadToReg(reg_value, R(EAX), accessSize, 0, signExtend);
SetJumpTarget(exit);
}
else
TEST(32, addr_loc, Imm32(mem_mask));
FixupBranch fast = J_CC(CC_Z, true);
ABI_PushRegistersAndAdjustStack(registersInUse, false);
switch (accessSize)
{
TEST(32, opAddress, Imm32(mem_mask));
FixupBranch fast = J_CC(CC_Z, true);
ABI_PushRegistersAndAdjustStack(registersInUse, false);
switch (accessSize)
{
case 32: ABI_CallFunctionA((void *)&Memory::Read_U32, opAddress); break;
case 16: ABI_CallFunctionA((void *)&Memory::Read_U16_ZX, opAddress); break;
case 8: ABI_CallFunctionA((void *)&Memory::Read_U8_ZX, opAddress); break;
}
ABI_PopRegistersAndAdjustStack(registersInUse, false);
MEMCHECK_START
if (signExtend && accessSize < 32)
{
// Need to sign extend values coming from the Read_U* functions.
MOVSX(32, accessSize, reg_value, R(EAX));
}
else if (reg_value != EAX)
{
MOVZX(32, accessSize, reg_value, R(EAX));
}
MEMCHECK_END
FixupBranch exit = J();
SetJumpTarget(fast);
UnsafeLoadToReg(reg_value, opAddress, accessSize, offset, signExtend);
SetJumpTarget(exit);
case 32: ABI_CallFunctionA((void *)&Memory::Read_U32, addr_loc); break;
case 16: ABI_CallFunctionA((void *)&Memory::Read_U16_ZX, addr_loc); break;
case 8: ABI_CallFunctionA((void *)&Memory::Read_U8_ZX, addr_loc); break;
}
ABI_PopRegistersAndAdjustStack(registersInUse, false);
MEMCHECK_START
if (signExtend && accessSize < 32)
{
// Need to sign extend values coming from the Read_U* functions.
MOVSX(32, accessSize, reg_value, R(EAX));
}
else if (reg_value != EAX)
{
MOVZX(32, accessSize, reg_value, R(EAX));
}
MEMCHECK_END
FixupBranch exit = J();
SetJumpTarget(fast);
UnsafeLoadToReg(reg_value, addr_loc, accessSize, 0, signExtend);
SetJumpTarget(exit);
}
}
}