Don't use enums larger than 1 << 31 for target features.
Patch by Andy Zhang!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147491 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/SubtargetEmitter.cpp b/utils/TableGen/SubtargetEmitter.cpp
index 34cd9a9..986c50f 100644
--- a/utils/TableGen/SubtargetEmitter.cpp
+++ b/utils/TableGen/SubtargetEmitter.cpp
@@ -39,29 +39,42 @@
OS << "namespace " << Target << " {\n";
- // Open enumeration
- OS << "enum {\n";
+ // For bit flag enumerations with more than 32 items, emit constants.
+ // Emit an enum for everything else.
+ if (isBits && N > 32) {
+ // For each record
+ for (unsigned i = 0; i < N; i++) {
+ // Next record
+ Record *Def = DefList[i];
- // For each record
- for (unsigned i = 0; i < N;) {
- // Next record
- Record *Def = DefList[i];
+ // Get and emit name and expression (1 << i)
+ OS << " const uint64_t " << Def->getName() << " = 1ULL << " << i << ";\n";
+ }
+ } else {
+ // Open enumeration
+ OS << "enum {\n";
- // Get and emit name
- OS << " " << Def->getName();
+ // For each record
+ for (unsigned i = 0; i < N;) {
+ // Next record
+ Record *Def = DefList[i];
- // If bit flags then emit expression (1 << i)
- if (isBits) OS << " = " << " 1ULL << " << i;
+ // Get and emit name
+ OS << " " << Def->getName();
- // Depending on 'if more in the list' emit comma
- if (++i < N) OS << ",";
+ // If bit flags then emit expression (1 << i)
+ if (isBits) OS << " = " << " 1ULL << " << i;
- OS << "\n";
+ // Depending on 'if more in the list' emit comma
+ if (++i < N) OS << ",";
+
+ OS << "\n";
+ }
+
+ // Close enumeration
+ OS << "};\n";
}
- // Close enumeration
- OS << "};\n";
-
OS << "}\n";
}