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-rw-r--r--utils/TableGen/IntrinsicEmitter.cpp204
1 files changed, 66 insertions, 138 deletions
diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp
index ba30d97eaa35..08f67284a279 100644
--- a/utils/TableGen/IntrinsicEmitter.cpp
+++ b/utils/TableGen/IntrinsicEmitter.cpp
@@ -14,6 +14,7 @@
#include "CodeGenTarget.h"
#include "IntrinsicEmitter.h"
#include "Record.h"
+#include "StringMatcher.h"
#include "llvm/ADT/StringExtras.h"
#include <algorithm>
using namespace llvm;
@@ -67,16 +68,19 @@ void IntrinsicEmitter::run(raw_ostream &OS) {
void IntrinsicEmitter::EmitPrefix(raw_ostream &OS) {
OS << "// VisualStudio defines setjmp as _setjmp\n"
- "#if defined(_MSC_VER) && defined(setjmp)\n"
- "#define setjmp_undefined_for_visual_studio\n"
- "#undef setjmp\n"
+ "#if defined(_MSC_VER) && defined(setjmp) && \\\n"
+ " !defined(setjmp_undefined_for_msvc)\n"
+ "# pragma push_macro(\"setjmp\")\n"
+ "# undef setjmp\n"
+ "# define setjmp_undefined_for_msvc\n"
"#endif\n\n";
}
void IntrinsicEmitter::EmitSuffix(raw_ostream &OS) {
- OS << "#if defined(_MSC_VER) && defined(setjmp_undefined_for_visual_studio)\n"
+ OS << "#if defined(_MSC_VER) && defined(setjmp_undefined_for_msvc)\n"
"// let's return it to _setjmp state\n"
- "#define setjmp _setjmp\n"
+ "# pragma pop_macro(\"setjmp\")\n"
+ "# undef setjmp_undefined_for_msvc\n"
"#endif\n\n";
}
@@ -96,37 +100,48 @@ void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
void IntrinsicEmitter::
EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
raw_ostream &OS) {
- // Build a function name -> intrinsic name mapping.
- std::map<std::string, unsigned> IntMapping;
+ // Build a 'first character of function name' -> intrinsic # mapping.
+ std::map<char, std::vector<unsigned> > IntMapping;
for (unsigned i = 0, e = Ints.size(); i != e; ++i)
- IntMapping[Ints[i].Name] = i;
-
+ IntMapping[Ints[i].Name[5]].push_back(i);
+
OS << "// Function name -> enum value recognizer code.\n";
OS << "#ifdef GET_FUNCTION_RECOGNIZER\n";
- OS << " switch (Name[5]) {\n";
- OS << " default:\n";
- // Emit the intrinsics in sorted order.
- char LastChar = 0;
- for (std::map<std::string, unsigned>::iterator I = IntMapping.begin(),
+ OS << " StringRef NameR(Name+6, Len-6); // Skip over 'llvm.'\n";
+ OS << " switch (Name[5]) { // Dispatch on first letter.\n";
+ OS << " default: break;\n";
+ // Emit the intrinsic matching stuff by first letter.
+ for (std::map<char, std::vector<unsigned> >::iterator I = IntMapping.begin(),
E = IntMapping.end(); I != E; ++I) {
- if (I->first[5] != LastChar) {
- LastChar = I->first[5];
- OS << " break;\n";
- OS << " case '" << LastChar << "':\n";
+ OS << " case '" << I->first << "':\n";
+ std::vector<unsigned> &IntList = I->second;
+
+ // Emit all the overloaded intrinsics first, build a table of the
+ // non-overloaded ones.
+ std::vector<StringMatcher::StringPair> MatchTable;
+
+ for (unsigned i = 0, e = IntList.size(); i != e; ++i) {
+ unsigned IntNo = IntList[i];
+ std::string Result = "return " + TargetPrefix + "Intrinsic::" +
+ Ints[IntNo].EnumName + ";";
+
+ if (!Ints[IntNo].isOverloaded) {
+ MatchTable.push_back(std::make_pair(Ints[IntNo].Name.substr(6),Result));
+ continue;
+ }
+
+ // For overloaded intrinsics, only the prefix needs to match
+ std::string TheStr = Ints[IntNo].Name.substr(6);
+ TheStr += '.'; // Require "bswap." instead of bswap.
+ OS << " if (NameR.startswith(\"" << TheStr << "\")) "
+ << Result << '\n';
}
- // For overloaded intrinsics, only the prefix needs to match
- if (Ints[I->second].isOverloaded)
- OS << " if (Len > " << I->first.size()
- << " && !memcmp(Name, \"" << I->first << ".\", "
- << (I->first.size() + 1) << ")) return " << TargetPrefix << "Intrinsic::"
- << Ints[I->second].EnumName << ";\n";
- else
- OS << " if (Len == " << I->first.size()
- << " && !memcmp(Name, \"" << I->first << "\", "
- << I->first.size() << ")) return " << TargetPrefix << "Intrinsic::"
- << Ints[I->second].EnumName << ";\n";
+ // Emit the matcher logic for the fixed length strings.
+ StringMatcher("NameR", MatchTable, OS).Emit(1);
+ OS << " break; // end of '" << I->first << "' case.\n";
}
+
OS << " }\n";
OS << "#endif\n\n";
}
@@ -180,6 +195,8 @@ static void EmitTypeForValueType(raw_ostream &OS, MVT::SimpleValueType VT) {
OS << "Type::getVoidTy(Context)";
} else if (VT == MVT::Metadata) {
OS << "Type::getMetadataTy(Context)";
+ } else if (VT == MVT::x86mmx) {
+ OS << "Type::getX86_MMXTy(Context)";
} else {
assert(false && "Unsupported ValueType!");
}
@@ -556,11 +573,13 @@ EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS){
OS << " return DoesNotAccessMemory;\n";
break;
case CodeGenIntrinsic::ReadArgMem:
+ OS << " return OnlyReadsArgumentPointees;\n";
+ break;
case CodeGenIntrinsic::ReadMem:
OS << " return OnlyReadsMemory;\n";
break;
case CodeGenIntrinsic::ReadWriteArgMem:
- OS << " return AccessesArguments;\n";
+ OS << " return OnlyAccessesArgumentPointees;\n";
break;
}
}
@@ -584,112 +603,22 @@ EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS){
OS << "#endif\n\n";
}
-/// EmitBuiltinComparisons - Emit comparisons to determine whether the specified
-/// sorted range of builtin names is equal to the current builtin. This breaks
-/// it down into a simple tree.
-///
-/// At this point, we know that all the builtins in the range have the same name
-/// for the first 'CharStart' characters. Only the end of the name needs to be
-/// discriminated.
-typedef std::map<std::string, std::string>::const_iterator StrMapIterator;
-static void EmitBuiltinComparisons(StrMapIterator Start, StrMapIterator End,
- unsigned CharStart, unsigned Indent,
- std::string TargetPrefix, raw_ostream &OS) {
- if (Start == End) return; // empty range.
-
- // Determine what, if anything, is the same about all these strings.
- std::string CommonString = Start->first;
- unsigned NumInRange = 0;
- for (StrMapIterator I = Start; I != End; ++I, ++NumInRange) {
- // Find the first character that doesn't match.
- const std::string &ThisStr = I->first;
- unsigned NonMatchChar = CharStart;
- while (NonMatchChar < CommonString.size() &&
- NonMatchChar < ThisStr.size() &&
- CommonString[NonMatchChar] == ThisStr[NonMatchChar])
- ++NonMatchChar;
- // Truncate off pieces that don't match.
- CommonString.resize(NonMatchChar);
- }
-
- // Just compare the rest of the string.
- if (NumInRange == 1) {
- if (CharStart != CommonString.size()) {
- OS << std::string(Indent*2, ' ') << "if (!memcmp(BuiltinName";
- if (CharStart) OS << "+" << CharStart;
- OS << ", \"" << (CommonString.c_str()+CharStart) << "\", ";
- OS << CommonString.size() - CharStart << "))\n";
- ++Indent;
- }
- OS << std::string(Indent*2, ' ') << "IntrinsicID = " << TargetPrefix
- << "Intrinsic::";
- OS << Start->second << ";\n";
- return;
- }
-
- // At this point, we potentially have a common prefix for these builtins, emit
- // a check for this common prefix.
- if (CommonString.size() != CharStart) {
- OS << std::string(Indent*2, ' ') << "if (!memcmp(BuiltinName";
- if (CharStart) OS << "+" << CharStart;
- OS << ", \"" << (CommonString.c_str()+CharStart) << "\", ";
- OS << CommonString.size()-CharStart << ")) {\n";
-
- EmitBuiltinComparisons(Start, End, CommonString.size(), Indent+1,
- TargetPrefix, OS);
- OS << std::string(Indent*2, ' ') << "}\n";
- return;
- }
-
- // Output a switch on the character that differs across the set.
- OS << std::string(Indent*2, ' ') << "switch (BuiltinName[" << CharStart
- << "]) {";
- if (CharStart)
- OS << " // \"" << std::string(Start->first.begin(),
- Start->first.begin()+CharStart) << "\"";
- OS << "\n";
-
- for (StrMapIterator I = Start; I != End; ) {
- char ThisChar = I->first[CharStart];
- OS << std::string(Indent*2, ' ') << "case '" << ThisChar << "':\n";
- // Figure out the range that has this common character.
- StrMapIterator NextChar = I;
- for (++NextChar; NextChar != End && NextChar->first[CharStart] == ThisChar;
- ++NextChar)
- /*empty*/;
- EmitBuiltinComparisons(I, NextChar, CharStart+1, Indent+1, TargetPrefix,OS);
- OS << std::string(Indent*2, ' ') << " break;\n";
- I = NextChar;
- }
- OS << std::string(Indent*2, ' ') << "}\n";
-}
-
/// EmitTargetBuiltins - All of the builtins in the specified map are for the
/// same target, and we already checked it.
static void EmitTargetBuiltins(const std::map<std::string, std::string> &BIM,
const std::string &TargetPrefix,
raw_ostream &OS) {
- // Rearrange the builtins by length.
- std::vector<std::map<std::string, std::string> > BuiltinsByLen;
- BuiltinsByLen.reserve(100);
- for (StrMapIterator I = BIM.begin(), E = BIM.end(); I != E; ++I) {
- if (I->first.size() >= BuiltinsByLen.size())
- BuiltinsByLen.resize(I->first.size()+1);
- BuiltinsByLen[I->first.size()].insert(*I);
- }
+ std::vector<StringMatcher::StringPair> Results;
- // Now that we have all the builtins by their length, emit a switch stmt.
- OS << " switch (strlen(BuiltinName)) {\n";
- OS << " default: break;\n";
- for (unsigned i = 0, e = BuiltinsByLen.size(); i != e; ++i) {
- if (BuiltinsByLen[i].empty()) continue;
- OS << " case " << i << ":\n";
- EmitBuiltinComparisons(BuiltinsByLen[i].begin(), BuiltinsByLen[i].end(),
- 0, 3, TargetPrefix, OS);
- OS << " break;\n";
+ for (std::map<std::string, std::string>::const_iterator I = BIM.begin(),
+ E = BIM.end(); I != E; ++I) {
+ std::string ResultCode =
+ "return " + TargetPrefix + "Intrinsic::" + I->second + ";";
+ Results.push_back(StringMatcher::StringPair(I->first, ResultCode));
}
- OS << " }\n";
+
+ StringMatcher("BuiltinName", Results, OS).Emit();
}
@@ -719,24 +648,20 @@ EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
if (TargetOnly) {
OS << "static " << TargetPrefix << "Intrinsic::ID "
<< "getIntrinsicForGCCBuiltin(const char "
- << "*TargetPrefix, const char *BuiltinName) {\n";
- OS << " " << TargetPrefix << "Intrinsic::ID IntrinsicID = ";
+ << "*TargetPrefixStr, const char *BuiltinNameStr) {\n";
} else {
OS << "Intrinsic::ID Intrinsic::getIntrinsicForGCCBuiltin(const char "
- << "*TargetPrefix, const char *BuiltinName) {\n";
- OS << " Intrinsic::ID IntrinsicID = ";
+ << "*TargetPrefixStr, const char *BuiltinNameStr) {\n";
}
- if (TargetOnly)
- OS << "(" << TargetPrefix<< "Intrinsic::ID)";
-
- OS << "Intrinsic::not_intrinsic;\n";
+ OS << " StringRef BuiltinName(BuiltinNameStr);\n";
+ OS << " StringRef TargetPrefix(TargetPrefixStr);\n\n";
// Note: this could emit significantly better code if we cared.
for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){
OS << " ";
if (!I->first.empty())
- OS << "if (!strcmp(TargetPrefix, \"" << I->first << "\")) ";
+ OS << "if (TargetPrefix == \"" << I->first << "\") ";
else
OS << "/* Target Independent Builtins */ ";
OS << "{\n";
@@ -745,7 +670,10 @@ EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
EmitTargetBuiltins(I->second, TargetPrefix, OS);
OS << " }\n";
}
- OS << " return IntrinsicID;\n";
+ OS << " return ";
+ if (!TargetPrefix.empty())
+ OS << "(" << TargetPrefix << "Intrinsic::ID)";
+ OS << "Intrinsic::not_intrinsic;\n";
OS << "}\n";
OS << "#endif\n\n";
}
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