METADATA_OLD_FN_NODE = 9, // OLD_FN_NODE: [n x (type num, value num)]
METADATA_NAMED_NODE = 10, // NAMED_NODE: [n x mdnodes]
METADATA_ATTACHMENT = 11, // [m x [value, [n x [id, mdnode]]]
- METADATA_GENERIC_DEBUG = 12 // [distinct, tag, vers, header, n x md num]
+ METADATA_GENERIC_DEBUG = 12, // [distinct, tag, vers, header, n x md num]
+ METADATA_SUBRANGE = 13 // [distinct, count, lo]
};
// The constants block (CONSTANTS_BLOCK_ID) describes emission for each
explicit MDFieldImpl(FieldTy Default)
: Val(std::move(Default)), Seen(false) {}
};
+
struct MDUnsignedField : public MDFieldImpl<uint64_t> {
uint64_t Max;
struct DwarfTagField : public MDUnsignedField {
DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
};
+
+struct MDSignedField : public MDFieldImpl<int64_t> {
+ int64_t Min;
+ int64_t Max;
+
+ MDSignedField(int64_t Default = 0)
+ : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
+ MDSignedField(int64_t Default, int64_t Min, int64_t Max)
+ : ImplTy(Default), Min(Min), Max(Max) {}
+};
+
struct MDField : public MDFieldImpl<Metadata *> {
MDField() : ImplTy(nullptr) {}
};
}
template <>
+bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
+ MDSignedField &Result) {
+ if (Lex.getKind() != lltok::APSInt)
+ return TokError("expected signed integer");
+
+ auto &S = Lex.getAPSIntVal();
+ if (S < Result.Min)
+ return TokError("value for '" + Name + "' too small, limit is " +
+ Twine(Result.Min));
+ if (S > Result.Max)
+ return TokError("value for '" + Name + "' too large, limit is " +
+ Twine(Result.Max));
+ Result.assign(S.getExtValue());
+ assert(Result.Val >= Result.Min && "Expected value in range");
+ assert(Result.Val <= Result.Max && "Expected value in range");
+ Lex.Lex();
+ return false;
+}
+
+template <>
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
Metadata *MD;
if (ParseMetadata(MD, nullptr))
return false;
}
+/// ParseMDSubrange:
+/// ::= !MDSubrange(count: 30, lowerBound: 2)
bool LLParser::ParseMDSubrange(MDNode *&Result, bool IsDistinct) {
- return TokError("unimplemented parser");
+#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
+ REQUIRED(count, MDUnsignedField, (0, UINT64_MAX >> 1)); \
+ OPTIONAL(lowerBound, MDSignedField, );
+ PARSE_MD_FIELDS();
+#undef VISIT_MD_FIELDS
+
+ Result = GET_OR_DISTINCT(MDSubrange, (Context, count.Val, lowerBound.Val));
+ return false;
}
+
bool LLParser::ParseMDEnumerator(MDNode *&Result, bool IsDistinct) {
return TokError("unimplemented parser");
}
}
}
+static int64_t unrotateSign(uint64_t U) { return U & 1 ? ~(U >> 1) : U >> 1; }
+
std::error_code BitcodeReader::ParseMetadata() {
unsigned NextMDValueNo = MDValueList.size();
NextMDValueNo++);
break;
}
+ case bitc::METADATA_SUBRANGE: {
+ if (Record.size() != 3)
+ return Error("Invalid record");
+
+ MDValueList.AssignValue(
+ GET_OR_DISTINCT(MDSubrange, Record[0],
+ (Context, Record[1], unrotateSign(Record[2]))),
+ NextMDValueNo++);
+ break;
+ }
case bitc::METADATA_STRING: {
std::string String(Record.begin(), Record.end());
llvm::UpgradeMDStringConstant(String);
Record.clear();
}
-static void WriteMDSubrange(const MDSubrange *, const ValueEnumerator &,
- BitstreamWriter &, SmallVectorImpl<uint64_t> &,
- unsigned) {
- llvm_unreachable("write not implemented");
+static uint64_t rotateSign(int64_t I) {
+ uint64_t U = I;
+ return I < 0 ? ~(U << 1) : U << 1;
+}
+
+static void WriteMDSubrange(const MDSubrange *N, const ValueEnumerator &,
+ BitstreamWriter &Stream,
+ SmallVectorImpl<uint64_t> &Record,
+ unsigned Abbrev) {
+ Record.push_back(N->isDistinct());
+ Record.push_back(N->getCount());
+ Record.push_back(rotateSign(N->getLo()));
+
+ Stream.EmitRecord(bitc::METADATA_SUBRANGE, Record, Abbrev);
+ Record.clear();
}
+
static void WriteMDEnumerator(const MDEnumerator *, const ValueEnumerator &,
BitstreamWriter &, SmallVectorImpl<uint64_t> &,
unsigned) {
Out << ")";
}
-static void writeMDSubrange(raw_ostream &, const MDSubrange *, TypePrinting *,
- SlotTracker *, const Module *) {
- llvm_unreachable("write not implemented");
+static void writeMDSubrange(raw_ostream &Out, const MDSubrange *N,
+ TypePrinting *, SlotTracker *, const Module *) {
+ Out << "!MDSubrange(";
+ FieldSeparator FS;
+ Out << FS << "count: " << N->getCount();
+ if (N->getLo())
+ Out << FS << "lowerBound: " << N->getLo();
+ Out << ")";
}
+
static void writeMDEnumerator(raw_ostream &, const MDEnumerator *,
TypePrinting *, SlotTracker *, const Module *) {
llvm_unreachable("write not implemented");
--- /dev/null
+; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
+; RUN: verify-uselistorder %s
+
+; CHECK: !named = !{!0, !0, !1, !2}
+!named = !{!0, !1, !2, !3}
+
+; CHECK: !0 = !MDSubrange(count: 3)
+; CHECK-NEXT: !1 = !MDSubrange(count: 3, lowerBound: 4)
+; CHECK-NEXT: !2 = !MDSubrange(count: 3, lowerBound: -5)
+!0 = !MDSubrange(count: 3)
+!1 = !MDSubrange(count: 3, lowerBound: 0)
+
+!2 = !MDSubrange(count: 3, lowerBound: 4)
+!3 = !MDSubrange(count: 3, lowerBound: -5)
--- /dev/null
+; RUN: not llvm-as < %s -disable-output 2>&1 | FileCheck %s
+
+; CHECK-NOT: error
+!0 = !MDSubrange(count: 9223372036854775807)
+
+; CHECK: <stdin>:[[@LINE+1]]:25: error: value for 'count' too large, limit is 9223372036854775807
+!1 = !MDSubrange(count: 9223372036854775808)
--- /dev/null
+; RUN: not llvm-as < %s -disable-output 2>&1 | FileCheck %s
+
+; CHECK: [[@LINE+1]]:32: error: missing required field 'count'
+!0 = !MDSubrange(lowerBound: -3)
--- /dev/null
+; RUN: not llvm-as < %s -disable-output 2>&1 | FileCheck %s
+
+; CHECK: [[@LINE+1]]:25: error: expected unsigned integer
+!0 = !MDSubrange(count: -3)
--- /dev/null
+; RUN: not llvm-as < %s -disable-output 2>&1 | FileCheck %s
+
+; CHECK: [[@LINE+1]]:41: error: value for 'lowerBound' too large, limit is 9223372036854775807
+!0 = !MDSubrange(count: 30, lowerBound: 9223372036854775808)
--- /dev/null
+; RUN: not llvm-as < %s -disable-output 2>&1 | FileCheck %s
+
+; CHECK: [[@LINE+1]]:41: error: value for 'lowerBound' too small, limit is -9223372036854775808
+!0 = !MDSubrange(count: 30, lowerBound: -9223372036854775809)