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Unified Diff: src/IceTargetLoweringX8664Traits.h

Issue 1676123002: Subzero: Use a proper RegNumT type instead of int32_t/SizeT. (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: Make it possible to do "auto NewReg = RegNumT::NoRegister;" Created 4 years, 10 months ago
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Index: src/IceTargetLoweringX8664Traits.h
diff --git a/src/IceTargetLoweringX8664Traits.h b/src/IceTargetLoweringX8664Traits.h
index 336e3dfcacb1f31ecf9fed626c19d32de99e4d20..18e054ab9d295f1f376e1696247376c8a560a1b5 100644
--- a/src/IceTargetLoweringX8664Traits.h
+++ b/src/IceTargetLoweringX8664Traits.h
@@ -68,8 +68,8 @@ struct TargetX8664Traits {
using Cond = ::Ice::CondX8664;
using RegisterSet = ::Ice::RegX8664;
- static constexpr SizeT StackPtr = RegX8664::Reg_rsp;
- static constexpr SizeT FramePtr = RegX8664::Reg_rbp;
+ static constexpr RegisterSet::AllRegisters StackPtr = RegX8664::Reg_rsp;
+ static constexpr RegisterSet::AllRegisters FramePtr = RegX8664::Reg_rbp;
static constexpr GPRRegister Encoded_Reg_Accumulator =
RegX8664::Encoded_Reg_eax;
static constexpr GPRRegister Encoded_Reg_Counter = RegX8664::Encoded_Reg_ecx;
@@ -301,7 +301,7 @@ struct TargetX8664Traits {
static const char *TargetName;
static constexpr Type WordType = IceType_i64;
- static IceString getRegName(int32_t RegNum) {
+ static IceString getRegName(RegNumT RegNum) {
static const char *const RegNames[RegisterSet::Reg_NUM] = {
#define X(val, encode, name, base, scratch, preserved, stackptr, frameptr, \
sboxres, isGPR, is64, is32, is16, is8, isXmm, is64To8, is32To8, \
@@ -310,12 +310,11 @@ struct TargetX8664Traits {
REGX8664_TABLE
#undef X
};
- assert(RegNum >= 0);
- assert(RegNum < RegisterSet::Reg_NUM);
+ RegNum.assertIsValid();
return RegNames[RegNum];
}
- static GPRRegister getEncodedGPR(int32_t RegNum) {
+ static GPRRegister getEncodedGPR(RegNumT RegNum) {
static const GPRRegister GPRRegs[RegisterSet::Reg_NUM] = {
#define X(val, encode, name, base, scratch, preserved, stackptr, frameptr, \
sboxres, isGPR, is64, is32, is16, is8, isXmm, is64To8, is32To8, \
@@ -324,13 +323,12 @@ struct TargetX8664Traits {
REGX8664_TABLE
#undef X
};
- assert(RegNum >= 0);
- assert(RegNum < RegisterSet::Reg_NUM);
+ RegNum.assertIsValid();
assert(GPRRegs[RegNum] != GPRRegister::Encoded_Not_GPR);
return GPRRegs[RegNum];
}
- static ByteRegister getEncodedByteReg(int32_t RegNum) {
+ static ByteRegister getEncodedByteReg(RegNumT RegNum) {
static const ByteRegister ByteRegs[RegisterSet::Reg_NUM] = {
#define X(val, encode, name, base, scratch, preserved, stackptr, frameptr, \
sboxres, isGPR, is64, is32, is16, is8, isXmm, is64To8, is32To8, \
@@ -339,13 +337,12 @@ struct TargetX8664Traits {
REGX8664_TABLE
#undef X
};
- assert(RegNum >= 0);
- assert(RegNum < RegisterSet::Reg_NUM);
+ RegNum.assertIsValid();
assert(ByteRegs[RegNum] != ByteRegister::Encoded_Not_ByteReg);
return ByteRegs[RegNum];
}
- static XmmRegister getEncodedXmm(int32_t RegNum) {
+ static XmmRegister getEncodedXmm(RegNumT RegNum) {
static const XmmRegister XmmRegs[RegisterSet::Reg_NUM] = {
#define X(val, encode, name, base, scratch, preserved, stackptr, frameptr, \
sboxres, isGPR, is64, is32, is16, is8, isXmm, is64To8, is32To8, \
@@ -354,13 +351,12 @@ struct TargetX8664Traits {
REGX8664_TABLE
#undef X
};
- assert(RegNum >= 0);
- assert(RegNum < RegisterSet::Reg_NUM);
+ RegNum.assertIsValid();
assert(XmmRegs[RegNum] != XmmRegister::Encoded_Not_Xmm);
return XmmRegs[RegNum];
}
- static uint32_t getEncoding(int32_t RegNum) {
+ static uint32_t getEncoding(RegNumT RegNum) {
static const uint32_t Encoding[RegisterSet::Reg_NUM] = {
#define X(val, encode, name, base, scratch, preserved, stackptr, frameptr, \
sboxres, isGPR, is64, is32, is16, is8, isXmm, is64To8, is32To8, \
@@ -369,27 +365,25 @@ struct TargetX8664Traits {
REGX8664_TABLE
#undef X
};
- assert(RegNum >= 0);
- assert(RegNum < RegisterSet::Reg_NUM);
+ RegNum.assertIsValid();
return Encoding[RegNum];
}
- static inline int32_t getBaseReg(int32_t RegNum) {
- static const int32_t BaseRegs[RegisterSet::Reg_NUM] = {
+ static inline RegNumT getBaseReg(RegNumT RegNum) {
+ static const RegNumT BaseRegs[RegisterSet::Reg_NUM] = {
#define X(val, encode, name, base, scratch, preserved, stackptr, frameptr, \
sboxres, isGPR, is64, is32, is16, is8, isXmm, is64To8, is32To8, \
is16To8, isTrunc8Rcvr, isAhRcvr, aliases) \
- encode,
+ RegisterSet::base,
REGX8664_TABLE
#undef X
};
- assert(RegNum >= 0);
- assert(RegNum < RegisterSet::Reg_NUM);
+ RegNum.assertIsValid();
return BaseRegs[RegNum];
}
private:
- static int32_t getFirstGprForType(Type Ty) {
+ static RegNumT getFirstGprForType(Type Ty) {
switch (Ty) {
default:
llvm_unreachable("Invalid type for GPR.");
@@ -406,8 +400,8 @@ private:
}
public:
- static int32_t getGprForType(Type Ty, int32_t RegNum) {
- assert(RegNum != Variable::NoRegister);
+ static RegNumT getGprForType(Type Ty, RegNumT RegNum) {
+ assert(RegNum != RegNumT::NoRegister);
if (!isScalarIntegerType(Ty)) {
return RegNum;
@@ -425,7 +419,7 @@ public:
assert(RegNum != RegisterSet::Reg_ch);
assert(RegNum != RegisterSet::Reg_dh);
- const int32_t FirstGprForType = getFirstGprForType(Ty);
+ const RegNumT FirstGprForType = getFirstGprForType(Ty);
switch (RegNum) {
default:
@@ -438,7 +432,7 @@ public:
return RegisterSet::val; \
assert((is64) || (is32) || (is16) || (is8) || \
getBaseReg(RegisterSet::val) == RegisterSet::Reg_rsp); \
- constexpr int32_t FirstGprWithRegNumSize = \
+ constexpr RegisterSet::AllRegisters FirstGprWithRegNumSize = \
((is64) || RegisterSet::val == RegisterSet::Reg_rsp) \
? RegisterSet::Reg_rax \
: (((is32) || RegisterSet::val == RegisterSet::Reg_esp) \
@@ -446,8 +440,8 @@ public:
: (((is16) || RegisterSet::val == RegisterSet::Reg_sp) \
? RegisterSet::Reg_ax \
: RegisterSet::Reg_al)); \
- const int32_t NewRegNum = \
- RegNum - FirstGprWithRegNumSize + FirstGprForType; \
+ const auto NewRegNum = \
+ RegNumT::fixme(RegNum - FirstGprWithRegNumSize + FirstGprForType); \
assert(getBaseReg(RegNum) == getBaseReg(NewRegNum) && \
"Error involving " #val); \
return NewRegNum; \
@@ -624,7 +618,7 @@ public:
static void
makeRandomRegisterPermutation(GlobalContext *Ctx, Cfg *Func,
- llvm::SmallVectorImpl<int32_t> &Permutation,
+ llvm::SmallVectorImpl<RegNumT> &Permutation,
const llvm::SmallBitVector &ExcludeRegisters,
uint64_t Salt) {
// TODO(stichnot): Declaring Permutation this way loses type/size
@@ -634,7 +628,7 @@ public:
// class. For x86-64, this would comprise the 16 XMM registers. This is
// for performance, not correctness.
static const unsigned MaxEquivalenceClassSize = 8;
- using RegisterList = llvm::SmallVector<int32_t, MaxEquivalenceClassSize>;
+ using RegisterList = llvm::SmallVector<RegNumT, MaxEquivalenceClassSize>;
using EquivalenceClassMap = std::map<uint32_t, RegisterList>;
EquivalenceClassMap EquivalenceClasses;
SizeT NumShuffled = 0, NumPreserved = 0;
@@ -696,7 +690,7 @@ public:
Str << "{";
const RegisterList &List = I.second;
bool First = true;
- for (int32_t Register : List) {
+ for (RegNumT Register : List) {
if (!First)
Str << " ";
First = false;
@@ -707,9 +701,9 @@ public:
}
}
- static int32_t getRaxOrDie() { return RegisterSet::Reg_rax; }
+ static RegNumT getRaxOrDie() { return RegisterSet::Reg_rax; }
- static int32_t getRdxOrDie() { return RegisterSet::Reg_rdx; }
+ static RegNumT getRdxOrDie() { return RegisterSet::Reg_rdx; }
// x86-64 calling convention:
//
@@ -731,19 +725,19 @@ public:
/// Whether scalar floating point arguments are passed in XMM registers
static constexpr bool X86_PASS_SCALAR_FP_IN_XMM = true;
/// Get the register for a given argument slot in the XMM registers.
- static int32_t getRegisterForXmmArgNum(uint32_t ArgNum) {
+ static RegNumT getRegisterForXmmArgNum(uint32_t ArgNum) {
// TODO(sehr): Change to use the CCArg technique used in ARM32.
static_assert(RegisterSet::Reg_xmm0 + 1 == RegisterSet::Reg_xmm1,
"Inconsistency between XMM register numbers and ordinals");
if (ArgNum >= X86_MAX_XMM_ARGS) {
- return Variable::NoRegister;
+ return RegNumT::NoRegister;
}
- return static_cast<int32_t>(RegisterSet::Reg_xmm0 + ArgNum);
+ return RegNumT::fixme(RegisterSet::Reg_xmm0 + ArgNum);
}
/// Get the register for a given argument slot in the GPRs.
- static int32_t getRegisterForGprArgNum(Type Ty, uint32_t ArgNum) {
+ static RegNumT getRegisterForGprArgNum(Type Ty, uint32_t ArgNum) {
if (ArgNum >= X86_MAX_GPR_ARGS) {
- return Variable::NoRegister;
+ return RegNumT::NoRegister;
}
static const RegisterSet::AllRegisters GprForArgNum[] = {
RegisterSet::Reg_rdi, RegisterSet::Reg_rsi, RegisterSet::Reg_rdx,
@@ -752,7 +746,7 @@ public:
static_assert(llvm::array_lengthof(GprForArgNum) == X86_MAX_GPR_ARGS,
"Mismatch between MAX_GPR_ARGS and GprForArgNum.");
assert(Ty == IceType_i64 || Ty == IceType_i32);
- return static_cast<int32_t>(getGprForType(Ty, GprForArgNum[ArgNum]));
+ return getGprForType(Ty, GprForArgNum[ArgNum]);
}
/// The number of bits in a byte
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