X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=utils%2FTableGen%2FAsmWriterInst.cpp;h=9541887540090c4822ba3e6428720b84c470d045;hb=47f0e3f434e2e43f951c3a826c40906cb15b7285;hp=ccf39c4c9a74c12618ee6377ef0a60a0cf3a1c48;hpb=d0bc7f060ece77c670794ef60f7052e2ff1847c9;p=oota-llvm.git diff --git a/utils/TableGen/AsmWriterInst.cpp b/utils/TableGen/AsmWriterInst.cpp index ccf39c4c9a7..95418875400 100644 --- a/utils/TableGen/AsmWriterInst.cpp +++ b/utils/TableGen/AsmWriterInst.cpp @@ -13,8 +13,9 @@ #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; @@ -31,13 +32,16 @@ std::string AsmWriterOperand::getCode() const { 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 + '"'; return Result + "); "; @@ -46,124 +50,64 @@ std::string AsmWriterOperand::getCode() const { /// 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. @@ -173,70 +117,68 @@ AsmWriterInst::AsmWriterInst(const CodeGenInstruction &CGI, ++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, 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, 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 @@ -245,14 +187,13 @@ AsmWriterInst::AsmWriterInst(const CodeGenInstruction &CGI, /// 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;