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JitArm64: Avoid MOVI2R is possible.

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Just use all kind of ADDI2R, SUBI2R, ...
They have some optimizations internally.
This commit is contained in:
degasus
2016-10-26 20:47:03 +02:00
parent 838b234317
commit df250b84cc
9 changed files with 75 additions and 256 deletions
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52
Source/Core/Common/Arm64Emitter.cpp
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@ -4145,6 +4145,24 @@ void ARM64XEmitter::ADDI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
}
}
void ARM64XEmitter::ADDSI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
{
u32 val;
bool shift;
if (IsImmArithmetic(imm, &val, &shift))
{
ADDS(Rd, Rn, val, shift);
}
else
{
_assert_msg_(DYNA_REC, scratch != INVALID_REG,
"ADDSI2R - failed to construct arithmetic immediate value from %08x, need scratch",
(u32)imm);
MOVI2R(scratch, imm);
ADDS(Rd, Rn, scratch);
}
}
void ARM64XEmitter::SUBI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
{
u32 val;
@ -4163,6 +4181,23 @@ void ARM64XEmitter::SUBI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
}
}
void ARM64XEmitter::SUBSI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
{
u32 val;
bool shift;
if (IsImmArithmetic(imm, &val, &shift))
{
SUBS(Rd, Rn, val, shift);
}
else
{
_assert_msg_(DYNA_REC, scratch != INVALID_REG,
"ANDSI2R - failed to construct immediate value from %08x, need scratch", (u32)imm);
MOVI2R(scratch, imm);
SUBS(Rd, Rn, scratch);
}
}
void ARM64XEmitter::CMPI2R(ARM64Reg Rn, u64 imm, ARM64Reg scratch)
{
u32 val;
@ -4320,21 +4355,4 @@ void ARM64FloatEmitter::MOVI2FDUP(ARM64Reg Rd, float value, ARM64Reg scratch)
DUP(32, Rd, Rd, 0);
}
void ARM64XEmitter::SUBSI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
{
u32 val;
bool shift;
if (IsImmArithmetic(imm, &val, &shift))
{
SUBS(Rd, Rn, val, shift);
}
else
{
_assert_msg_(DYNA_REC, scratch != INVALID_REG,
"ANDSI2R - failed to construct immediate value from %08x, need scratch", (u32)imm);
MOVI2R(scratch, imm);
SUBS(Rd, Rn, scratch);
}
}
} // namespace