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cntlzwx.

This commit is contained in:
Ben Vanik 2013-05-25 03:23:33 -07:00
parent de85adea2e
commit a5da226617
1 changed files with 8 additions and 15 deletions
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23
src/xenia/cpu/x64/x64_emit_alu.cc
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@ -674,7 +674,6 @@ XEEMITTER(cntlzdx, 0x7C000074, X )(X64Emitter& e, X86Compiler& c, InstrDat
return 1;
}
#if 0
XEEMITTER(cntlzwx, 0x7C000034, X )(X64Emitter& e, X86Compiler& c, InstrData& i) {
// n <- 32
// do while n < 64
@ -682,26 +681,20 @@ XEEMITTER(cntlzwx, 0x7C000034, X )(X64Emitter& e, X86Compiler& c, InstrDat
// n <- n + 1
// RA <- n - 32
jit_value_t v = e.gpr_value(i.X.RT);
v = e.trunc_to_int(v);
std::vector<Type*> arg_types;
arg_types.push_back(b.getInt32Ty());
Function* ctlz = Intrinsic::getDeclaration(
e.fn()->getParent(), Intrinsic::ctlz, arg_types);
jit_value_t count = b.CreateCall2(ctlz, v, b.getInt1(1));
count = e.zero_extend(count, jit_type_nint);
e.update_gpr_value(i.X.RA, count);
GpVar v(c.newGpVar());
c.mov(v, imm(0xF0000000));
c.bsr(v.r32(), v.r32());
c.cmovz(v, e.get_uint64(63));
c.xor_(v, imm(0x1F));
e.update_gpr_value(i.X.RA, v);
if (i.X.Rc) {
// With cr0 update.
e.update_cr_with_cond(0, count, e.get_int64(0), true);
e.update_cr_with_cond(0, v);
}
return 0;
}
#endif
XEEMITTER(eqvx, 0x7C000238, X )(X64Emitter& e, X86Compiler& c, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
@ -1109,7 +1102,7 @@ void X64RegisterEmitCategoryALU() {
XEREGISTERINSTR(andix, 0x70000000);
XEREGISTERINSTR(andisx, 0x74000000);
XEREGISTERINSTR(cntlzdx, 0x7C000074);
// XEREGISTERINSTR(cntlzwx, 0x7C000034);
XEREGISTERINSTR(cntlzwx, 0x7C000034);
XEREGISTERINSTR(eqvx, 0x7C000238);
XEREGISTERINSTR(extsbx, 0x7C000774);
XEREGISTERINSTR(extshx, 0x7C000734);