#include "AsmWriterInst.h"
#include "CodeGenTarget.h"
-#include "Record.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
using namespace llvm;
return "O << '" + Str + "'; ";
return "O << \"" + Str + "\"; ";
}
-
+
if (OperandType == isLiteralStatementOperand)
return Str;
-
+
std::string Result = Str + "(MI";
if (MIOpNo != ~0U)
Result += ", " + utostr(MIOpNo);
+ if (PassSubtarget)
+ Result += ", STI";
Result += ", O";
if (!MiModifier.empty())
Result += ", \"" + MiModifier + '"';
/// ParseAsmString - Parse the specified Instruction's AsmString into this
/// AsmWriterInst.
///
-AsmWriterInst::AsmWriterInst(const CodeGenInstruction &CGI,
- unsigned Variant,
- int FirstOperandColumn,
- int OperandSpacing) {
+AsmWriterInst::AsmWriterInst(const CodeGenInstruction &CGI, unsigned Variant,
+ unsigned PassSubtarget) {
this->CGI = &CGI;
-
- unsigned CurVariant = ~0U; // ~0 if we are outside a {.|.|.} region, other #.
-
- // This is the number of tabs we've seen if we're doing columnar layout.
- unsigned CurColumn = 0;
-
-
- // NOTE: Any extensions to this code need to be mirrored in the
+
+ // NOTE: Any extensions to this code need to be mirrored in the
// AsmPrinter::printInlineAsm code that executes as compile time (assuming
// that inline asm strings should also get the new feature)!
- const std::string &AsmString = CGI.AsmString;
+ std::string AsmString = CGI.FlattenAsmStringVariants(CGI.AsmString, Variant);
std::string::size_type LastEmitted = 0;
while (LastEmitted != AsmString.size()) {
std::string::size_type DollarPos =
- AsmString.find_first_of("${|}\\", LastEmitted);
+ AsmString.find_first_of("$\\", LastEmitted);
if (DollarPos == std::string::npos) DollarPos = AsmString.size();
-
+
// Emit a constant string fragment.
-
if (DollarPos != LastEmitted) {
- if (CurVariant == Variant || CurVariant == ~0U) {
- for (; LastEmitted != DollarPos; ++LastEmitted)
- switch (AsmString[LastEmitted]) {
- case '\n':
- AddLiteralString("\\n");
- break;
- case '\t':
- // If the asm writer is not using a columnar layout, \t is not
- // magic.
- if (FirstOperandColumn == -1 || OperandSpacing == -1) {
- AddLiteralString("\\t");
- } else {
- // We recognize a tab as an operand delimeter.
- unsigned DestColumn = FirstOperandColumn +
- CurColumn++ * OperandSpacing;
- Operands.push_back(
- AsmWriterOperand(
- "O.PadToColumn(" +
- utostr(DestColumn) + ");\n",
- AsmWriterOperand::isLiteralStatementOperand));
- }
- break;
- case '"':
- AddLiteralString("\\\"");
- break;
- case '\\':
- AddLiteralString("\\\\");
- break;
- default:
- AddLiteralString(std::string(1, AsmString[LastEmitted]));
- break;
- }
- } else {
- LastEmitted = DollarPos;
- }
+ for (; LastEmitted != DollarPos; ++LastEmitted)
+ switch (AsmString[LastEmitted]) {
+ case '\n':
+ AddLiteralString("\\n");
+ break;
+ case '\t':
+ AddLiteralString("\\t");
+ break;
+ case '"':
+ AddLiteralString("\\\"");
+ break;
+ case '\\':
+ AddLiteralString("\\\\");
+ break;
+ default:
+ AddLiteralString(std::string(1, AsmString[LastEmitted]));
+ break;
+ }
} else if (AsmString[DollarPos] == '\\') {
- if (DollarPos+1 != AsmString.size() &&
- (CurVariant == Variant || CurVariant == ~0U)) {
+ if (DollarPos+1 != AsmString.size()) {
if (AsmString[DollarPos+1] == 'n') {
AddLiteralString("\\n");
} else if (AsmString[DollarPos+1] == 't') {
- // If the asm writer is not using a columnar layout, \t is not
- // magic.
- if (FirstOperandColumn == -1 || OperandSpacing == -1) {
- AddLiteralString("\\t");
- break;
- }
-
- // We recognize a tab as an operand delimeter.
- unsigned DestColumn = FirstOperandColumn +
- CurColumn++ * OperandSpacing;
- Operands.push_back(
- AsmWriterOperand("O.PadToColumn(" + utostr(DestColumn) + ");\n",
- AsmWriterOperand::isLiteralStatementOperand));
- break;
- } else if (std::string("${|}\\").find(AsmString[DollarPos+1])
+ AddLiteralString("\\t");
+ } else if (std::string("${|}\\").find(AsmString[DollarPos+1])
!= std::string::npos) {
AddLiteralString(std::string(1, AsmString[DollarPos+1]));
} else {
- throw "Non-supported escaped character found in instruction '" +
- CGI.TheDef->getName() + "'!";
+ PrintFatalError("Non-supported escaped character found in instruction '" +
+ CGI.TheDef->getName() + "'!");
}
LastEmitted = DollarPos+2;
continue;
}
- } else if (AsmString[DollarPos] == '{') {
- if (CurVariant != ~0U)
- throw "Nested variants found for instruction '" +
- CGI.TheDef->getName() + "'!";
- LastEmitted = DollarPos+1;
- CurVariant = 0; // We are now inside of the variant!
- } else if (AsmString[DollarPos] == '|') {
- if (CurVariant == ~0U)
- throw "'|' character found outside of a variant in instruction '"
- + CGI.TheDef->getName() + "'!";
- ++CurVariant;
- ++LastEmitted;
- } else if (AsmString[DollarPos] == '}') {
- if (CurVariant == ~0U)
- throw "'}' character found outside of a variant in instruction '"
- + CGI.TheDef->getName() + "'!";
- ++LastEmitted;
- CurVariant = ~0U;
} else if (DollarPos+1 != AsmString.size() &&
AsmString[DollarPos+1] == '$') {
- if (CurVariant == Variant || CurVariant == ~0U) {
- AddLiteralString("$"); // "$$" -> $
- }
+ AddLiteralString("$"); // "$$" -> $
LastEmitted = DollarPos+2;
} else {
// Get the name of the variable.
std::string::size_type VarEnd = DollarPos+1;
-
+
// handle ${foo}bar as $foo by detecting whether the character following
// the dollar sign is a curly brace. If so, advance VarEnd and DollarPos
// so the variable name does not contain the leading curly brace.
++DollarPos;
++VarEnd;
}
-
+
while (VarEnd < AsmString.size() && isIdentChar(AsmString[VarEnd]))
++VarEnd;
std::string VarName(AsmString.begin()+DollarPos+1,
AsmString.begin()+VarEnd);
-
+
// Modifier - Support ${foo:modifier} syntax, where "modifier" is passed
// into printOperand. Also support ${:feature}, which is passed into
// PrintSpecial.
std::string Modifier;
-
+
// In order to avoid starting the next string at the terminating curly
// brace, advance the end position past it if we found an opening curly
// brace.
if (hasCurlyBraces) {
if (VarEnd >= AsmString.size())
- throw "Reached end of string before terminating curly brace in '"
- + CGI.TheDef->getName() + "'";
-
+ PrintFatalError("Reached end of string before terminating curly brace in '"
+ + CGI.TheDef->getName() + "'");
+
// Look for a modifier string.
if (AsmString[VarEnd] == ':') {
++VarEnd;
if (VarEnd >= AsmString.size())
- throw "Reached end of string before terminating curly brace in '"
- + CGI.TheDef->getName() + "'";
-
+ PrintFatalError("Reached end of string before terminating curly brace in '"
+ + CGI.TheDef->getName() + "'");
+
unsigned ModifierStart = VarEnd;
while (VarEnd < AsmString.size() && isIdentChar(AsmString[VarEnd]))
++VarEnd;
Modifier = std::string(AsmString.begin()+ModifierStart,
AsmString.begin()+VarEnd);
if (Modifier.empty())
- throw "Bad operand modifier name in '"+ CGI.TheDef->getName() + "'";
+ PrintFatalError("Bad operand modifier name in '"+ CGI.TheDef->getName() + "'");
}
-
+
if (AsmString[VarEnd] != '}')
- throw "Variable name beginning with '{' did not end with '}' in '"
- + CGI.TheDef->getName() + "'";
+ PrintFatalError("Variable name beginning with '{' did not end with '}' in '"
+ + CGI.TheDef->getName() + "'");
++VarEnd;
}
if (VarName.empty() && Modifier.empty())
- throw "Stray '$' in '" + CGI.TheDef->getName() +
- "' asm string, maybe you want $$?";
-
+ PrintFatalError("Stray '$' in '" + CGI.TheDef->getName() +
+ "' asm string, maybe you want $$?");
+
if (VarName.empty()) {
// Just a modifier, pass this into PrintSpecial.
- Operands.push_back(AsmWriterOperand("PrintSpecial",
- ~0U,
- ~0U,
- Modifier));
+ Operands.emplace_back("PrintSpecial", ~0U, ~0U, Modifier,
+ PassSubtarget);
} else {
// Otherwise, normal operand.
- unsigned OpNo = CGI.getOperandNamed(VarName);
- CodeGenInstruction::OperandInfo OpInfo = CGI.OperandList[OpNo];
-
- if (CurVariant == Variant || CurVariant == ~0U) {
- unsigned MIOp = OpInfo.MIOperandNo;
- Operands.push_back(AsmWriterOperand(OpInfo.PrinterMethodName,
- OpNo,
- MIOp,
- Modifier));
- }
+ unsigned OpNo = CGI.Operands.getOperandNamed(VarName);
+ CGIOperandList::OperandInfo OpInfo = CGI.Operands[OpNo];
+
+ unsigned MIOp = OpInfo.MIOperandNo;
+ Operands.emplace_back(OpInfo.PrinterMethodName, OpNo, MIOp, Modifier,
+ PassSubtarget);
}
LastEmitted = VarEnd;
}
}
-
- Operands.push_back(AsmWriterOperand("return;",
- AsmWriterOperand::isLiteralStatementOperand));
+
+ Operands.emplace_back("return;", AsmWriterOperand::isLiteralStatementOperand);
}
/// MatchesAllButOneOp - If this instruction is exactly identical to the
/// if the instructions are identical return ~0.
unsigned AsmWriterInst::MatchesAllButOneOp(const AsmWriterInst &Other)const{
if (Operands.size() != Other.Operands.size()) return ~1;
-
+
unsigned MismatchOperand = ~0U;
for (unsigned i = 0, e = Operands.size(); i != e; ++i) {
if (Operands[i] != Other.Operands[i]) {
if (MismatchOperand != ~0U) // Already have one mismatch?
return ~1U;
- else
- MismatchOperand = i;
+ MismatchOperand = i;
}
}
return MismatchOperand;
projects / oota-llvm.git / blobdiff