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compile UMULLs and some fixes

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This commit is contained in:
RSDuck
2020-04-25 14:42:37 +02:00
parent 3787bab1f6
commit 68d552074b
4 changed files with 30 additions and 12 deletions
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33
src/ARMJIT_x64/ARMJIT_ALU.cpp
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@ -301,10 +301,11 @@ void Compiler::A_Comp_MUL_MLA()
Comp_MulOp(S, add, rd, rm, rs, rn);
}
void Compiler::A_Comp_SMULL_SMLAL()
void Compiler::A_Comp_Mul_Long()
{
bool S = CurInstr.Instr & (1 << 20);
bool add = CurInstr.Instr & (1 << 21);
bool sign = CurInstr.Instr & (1 << 22);
OpArg rd = MapReg(CurInstr.A_Reg(16));
OpArg rm = MapReg(CurInstr.A_Reg(0));
OpArg rs = MapReg(CurInstr.A_Reg(8));
@ -318,18 +319,34 @@ void Compiler::A_Comp_SMULL_SMLAL()
MOV(32, R(RSCRATCH3), rs);
TEST(32, R(RSCRATCH3), R(RSCRATCH3));
FixupBranch zeroBSR = J_CC(CC_Z);
BSR(32, RSCRATCH2, R(RSCRATCH3));
NOT(32, R(RSCRATCH3));
BSR(32, RSCRATCH, R(RSCRATCH3));
CMP(32, R(RSCRATCH2), R(RSCRATCH));
CMOVcc(32, RSCRATCH, R(RSCRATCH2), CC_L);
if (sign)
{
BSR(32, RSCRATCH2, R(RSCRATCH3));
NOT(32, R(RSCRATCH3));
BSR(32, RSCRATCH, R(RSCRATCH3));
CMP(32, R(RSCRATCH2), R(RSCRATCH));
CMOVcc(32, RSCRATCH, R(RSCRATCH2), CC_L);
}
else
{
BSR(32, RSCRATCH, R(RSCRATCH3));
}
SHR(32, R(RSCRATCH), Imm8(3));
SetJumpTarget(zeroBSR); // fortunately that's even right
Comp_AddCycles_CI(RSCRATCH, 2);
}
MOVSX(64, 32, RSCRATCH2, rm);
MOVSX(64, 32, RSCRATCH3, rs);
if (sign)
{
MOVSX(64, 32, RSCRATCH2, rm);
MOVSX(64, 32, RSCRATCH3, rs);
}
else
{
MOV(32, R(RSCRATCH2), rm);
MOV(32, R(RSCRATCH3), rs);
}
if (add)
{
MOV(32, R(RSCRATCH), rd);