From 84c614d1ac671b1a5524169f20028f51c30be728 Mon Sep 17 00:00:00 2001 From: Reid Spencer Date: Tue, 22 May 2007 19:30:31 +0000 Subject: The Intrinsic::getDeclaration function's Tys parameter only contains the types of the iAny types involved in the overloaded intrinsic. Thus, we can't use the argument number as the index but have to count them separately in order to index Tys correctly. This patch rectifies this situation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37296 91177308-0d34-0410-b5e6-96231b3b80d8 --- utils/TableGen/IntrinsicEmitter.cpp | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'utils/TableGen/IntrinsicEmitter.cpp') diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp index 834e1429ba..a362553d2a 100644 --- a/utils/TableGen/IntrinsicEmitter.cpp +++ b/utils/TableGen/IntrinsicEmitter.cpp @@ -134,11 +134,18 @@ static bool EmitTypeVerify(std::ostream &OS, Record *ArgType) { return false; } -static void EmitTypeGenerate(std::ostream &OS, Record *ArgType, unsigned ArgNo){ +static void EmitTypeGenerate(std::ostream &OS, Record *ArgType, + unsigned &ArgNo) { if (ArgType->isSubClassOf("LLVMIntegerType")) { unsigned BitWidth = ArgType->getValueAsInt("Width"); + // NOTE: The ArgNo variable here is not the absolute argument number, it is + // the index of the "arbitrary" type in the Tys array passed to the + // Intrinsic::getDeclaration function. Consequently, we only want to + // increment it when we actually hit an arbitray integer type which is + // identified by BitWidth == 0. Getting this wrong leads to very subtle + // bugs! if (BitWidth == 0) - OS << "Tys[" << ArgNo << "]"; + OS << "Tys[" << ArgNo++ << "]"; else OS << "IntegerType::get(" << BitWidth << ")"; } else if (ArgType->isSubClassOf("LLVMVectorType")) { @@ -253,16 +260,16 @@ void IntrinsicEmitter::EmitGenerator(const std::vector &Ints, --N; } + unsigned ArgNo = 0; OS << " ResultTy = "; - EmitTypeGenerate(OS, ArgTypes[0], 0); + EmitTypeGenerate(OS, ArgTypes[0], ArgNo); OS << ";\n"; for (unsigned j = 1; j != N; ++j) { OS << " ArgTys.push_back("; - EmitTypeGenerate(OS, ArgTypes[j], j); + EmitTypeGenerate(OS, ArgTypes[j], ArgNo); OS << ");\n"; } - OS << " break;\n"; } OS << " }\n"; -- cgit v1.2.3