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Add separate VMX/fpu mxcsr

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Add support for constant operands for most fpu instructions
Remove constant folding for most fpu cpde
half float
This commit is contained in:
chss95cs@gmail.com
2022-07-31 08:56:36 -07:00
parent 3185b0ac9c
commit 968f656d96
18 changed files with 687 additions and 611 deletions
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24
src/xenia/cpu/backend/x64/x64_emitter.h
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@@ -65,6 +65,12 @@ enum class SimdDomain : uint32_t {
// CONFLICTING means its used in multiple domains)
};
enum class MXCSRMode : uint32_t {
Unknown,
Fpu,
Vmx
};
static SimdDomain PickDomain2(SimdDomain dom1, SimdDomain dom2) {
if (dom1 == dom2) {
return dom1;
@@ -283,8 +289,8 @@ class X64Emitter : public Xbyak::CodeGenerator {
Xbyak::Reg64 GetNativeParam(uint32_t param);
Xbyak::Reg64 GetContextReg();
Xbyak::Reg64 GetMembaseReg();
Xbyak::Reg64 GetContextReg() const;
Xbyak::Reg64 GetMembaseReg() const;
bool CanUseMembaseLow32As0() const { return may_use_membase32_as_zero_reg_; }
void ReloadMembase();
@@ -295,7 +301,7 @@ class X64Emitter : public Xbyak::CodeGenerator {
void MovMem64(const Xbyak::RegExp& addr, uint64_t v);
Xbyak::Address GetXmmConstPtr(XmmConst id);
Xbyak::Address GetBackendCtxPtr(int offset_in_x64backendctx);
Xbyak::Address GetBackendCtxPtr(int offset_in_x64backendctx) const;
void LoadConstantXmm(Xbyak::Xmm dest, float v);
void LoadConstantXmm(Xbyak::Xmm dest, double v);
@@ -304,6 +310,7 @@ class X64Emitter : public Xbyak::CodeGenerator {
Xbyak::Address StashConstantXmm(int index, float v);
Xbyak::Address StashConstantXmm(int index, double v);
Xbyak::Address StashConstantXmm(int index, const vec128_t& v);
Xbyak::Address GetBackendFlagsPtr() const;
void* FindByteConstantOffset(unsigned bytevalue);
void* FindWordConstantOffset(unsigned wordvalue);
void* FindDwordConstantOffset(unsigned bytevalue);
@@ -319,6 +326,16 @@ class X64Emitter : public Xbyak::CodeGenerator {
size_t stack_size() const { return stack_size_; }
SimdDomain DeduceSimdDomain(const hir::Value* for_value);
void ForgetMxcsrMode() {
mxcsr_mode_ = MXCSRMode::Unknown;
}
/*
returns true if had to load mxcsr. DOT_PRODUCT can use this to skip clearing the overflow flag, as it will never be set in the vmx fpscr
*/
bool ChangeMxcsrMode(MXCSRMode new_mode, bool already_set=false);//already_set means that the caller already did vldmxcsr, used for SET_ROUNDING_MODE
void LoadFpuMxcsrDirect(); //unsafe, does not change mxcsr_mode_
void LoadVmxMxcsrDirect(); //unsafe, does not change mxcsr_mode_
protected:
void* Emplace(const EmitFunctionInfo& func_info,
GuestFunction* function = nullptr);
@@ -359,6 +376,7 @@ class X64Emitter : public Xbyak::CodeGenerator {
std::vector<Xbyak::Label*>
label_cache_; // for creating labels that need to be referenced much
// later by tail emitters
MXCSRMode mxcsr_mode_ = MXCSRMode::Unknown;
};
} // namespace x64