Emit the "is an intrinsic overloaded" table as a bitfield.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151792 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp
index c5e3623..578b3aa 100644
--- a/utils/TableGen/IntrinsicEmitter.cpp
+++ b/utils/TableGen/IntrinsicEmitter.cpp
@@ -160,17 +160,20 @@
void IntrinsicEmitter::
EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints,
raw_ostream &OS) {
- OS << "// Intrinsic ID to overload table\n";
+ OS << "// Intrinsic ID to overload bitset\n";
OS << "#ifdef GET_INTRINSIC_OVERLOAD_TABLE\n";
- OS << " // Note that entry #0 is the invalid intrinsic!\n";
+ OS << "static const uint8_t OTable[] = {\n";
+ OS << " 0";
for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
- OS << " ";
+ // Add one to the index so we emit a null bit for the invalid #0 intrinsic.
+ if ((i+1)%8 == 0)
+ OS << ",\n 0";
if (Ints[i].isOverloaded)
- OS << "true";
- else
- OS << "false";
- OS << ",\n";
+ OS << " | (1<<" << (i+1)%8 << ')';
}
+ OS << "\n};\n\n";
+ // OTable contains a true bit at the position if the intrinsic is overloaded.
+ OS << "return (OTable[id/8] & (1 << (id%8))) != 0;\n";
OS << "#endif\n\n";
}