ARM NEON assembly parsing and encoding for VDUP(scalar).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141446 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index f56f455..1d6a05c 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -254,6 +254,7 @@
k_PostIndexRegister,
k_MSRMask,
k_ProcIFlags,
+ k_VectorIndex,
k_Register,
k_RegisterList,
k_DPRRegisterList,
@@ -304,6 +305,10 @@
} Reg;
struct {
+ unsigned Val;
+ } VectorIndex;
+
+ struct {
const MCExpr *Val;
} Imm;
@@ -419,6 +424,9 @@
case k_BitfieldDescriptor:
Bitfield = o.Bitfield;
break;
+ case k_VectorIndex:
+ VectorIndex = o.VectorIndex;
+ break;
}
}
@@ -463,6 +471,11 @@
return FPImm.Val;
}
+ unsigned getVectorIndex() const {
+ assert(Kind == k_VectorIndex && "Invalid access!");
+ return VectorIndex.Val;
+ }
+
ARM_MB::MemBOpt getMemBarrierOpt() const {
assert(Kind == k_MemBarrierOpt && "Invalid access!");
return MBOpt.Val;
@@ -859,6 +872,21 @@
bool isMSRMask() const { return Kind == k_MSRMask; }
bool isProcIFlags() const { return Kind == k_ProcIFlags; }
+ bool isVectorIndex8() const {
+ if (Kind != k_VectorIndex) return false;
+ return VectorIndex.Val < 8;
+ }
+ bool isVectorIndex16() const {
+ if (Kind != k_VectorIndex) return false;
+ return VectorIndex.Val < 4;
+ }
+ bool isVectorIndex32() const {
+ if (Kind != k_VectorIndex) return false;
+ return VectorIndex.Val < 2;
+ }
+
+
+
void addExpr(MCInst &Inst, const MCExpr *Expr) const {
// Add as immediates when possible. Null MCExpr = 0.
if (Expr == 0)
@@ -1343,6 +1371,21 @@
Inst.addOperand(MCOperand::CreateImm(unsigned(getProcIFlags())));
}
+ void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
+ }
+
+ void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
+ }
+
+ void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
+ }
+
virtual void print(raw_ostream &OS) const;
static ARMOperand *CreateITMask(unsigned Mask, SMLoc S) {
@@ -1479,6 +1522,15 @@
return Op;
}
+ static ARMOperand *CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E,
+ MCContext &Ctx) {
+ ARMOperand *Op = new ARMOperand(k_VectorIndex);
+ Op->VectorIndex.Val = Idx;
+ Op->StartLoc = S;
+ Op->EndLoc = E;
+ return Op;
+ }
+
static ARMOperand *CreateImm(const MCExpr *Val, SMLoc S, SMLoc E) {
ARMOperand *Op = new ARMOperand(k_Immediate);
Op->Imm.Val = Val;
@@ -1659,6 +1711,9 @@
case k_Token:
OS << "'" << getToken() << "'";
break;
+ case k_VectorIndex:
+ OS << "<vectorindex " << getVectorIndex() << ">";
+ break;
}
}
@@ -1700,6 +1755,39 @@
if (!RegNum) return -1;
Parser.Lex(); // Eat identifier token.
+
+#if 0
+ // Also check for an index operand. This is only legal for vector registers,
+ // but that'll get caught OK in operand matching, so we don't need to
+ // explicitly filter everything else out here.
+ if (Parser.getTok().is(AsmToken::LBrac)) {
+ SMLoc SIdx = Parser.getTok().getLoc();
+ Parser.Lex(); // Eat left bracket token.
+
+ const MCExpr *ImmVal;
+ SMLoc ExprLoc = Parser.getTok().getLoc();
+ if (getParser().ParseExpression(ImmVal))
+ return MatchOperand_ParseFail;
+ const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
+ if (!MCE) {
+ TokError("immediate value expected for vector index");
+ return MatchOperand_ParseFail;
+ }
+
+ SMLoc E = Parser.getTok().getLoc();
+ if (Parser.getTok().isNot(AsmToken::RBrac)) {
+ Error(E, "']' expected");
+ return MatchOperand_ParseFail;
+ }
+
+ Parser.Lex(); // Eat right bracket token.
+
+ Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
+ SIdx, E,
+ getContext()));
+ }
+#endif
+
return RegNum;
}
@@ -1815,6 +1903,37 @@
Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
ExclaimTok.getLoc()));
Parser.Lex(); // Eat exclaim token
+ return false;
+ }
+
+ // Also check for an index operand. This is only legal for vector registers,
+ // but that'll get caught OK in operand matching, so we don't need to
+ // explicitly filter everything else out here.
+ if (Parser.getTok().is(AsmToken::LBrac)) {
+ SMLoc SIdx = Parser.getTok().getLoc();
+ Parser.Lex(); // Eat left bracket token.
+
+ const MCExpr *ImmVal;
+ SMLoc ExprLoc = Parser.getTok().getLoc();
+ if (getParser().ParseExpression(ImmVal))
+ return MatchOperand_ParseFail;
+ const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
+ if (!MCE) {
+ TokError("immediate value expected for vector index");
+ return MatchOperand_ParseFail;
+ }
+
+ SMLoc E = Parser.getTok().getLoc();
+ if (Parser.getTok().isNot(AsmToken::RBrac)) {
+ Error(E, "']' expected");
+ return MatchOperand_ParseFail;
+ }
+
+ Parser.Lex(); // Eat right bracket token.
+
+ Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
+ SIdx, E,
+ getContext()));
}
return false;