From 0f123cf732ad249117b7471e37bf819633b76a6e Mon Sep 17 00:00:00 2001 From: Nate Begeman Date: Thu, 12 Feb 2009 21:28:33 +0000 Subject: Add suppport for ConstantExprs of shufflevectors whose result type is not equal to the type of the vectors being shuffled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64401 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Bitcode/Writer/BitcodeWriter.cpp | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'lib/Bitcode/Writer/BitcodeWriter.cpp') diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp index e37c439f5c..5633f0ffad 100644 --- a/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -643,7 +643,16 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal, Record.push_back(VE.getValueID(C->getOperand(2))); break; case Instruction::ShuffleVector: - Code = bitc::CST_CODE_CE_SHUFFLEVEC; + // If the return type and argument types are the same, this is a + // standard shufflevector instruction. If the types are different, + // then the shuffle is widening or truncating the input vectors, and + // the argument type must also be encoded. + if (C->getType() == C->getOperand(0)->getType()) { + Code = bitc::CST_CODE_CE_SHUFFLEVEC; + } else { + Code = bitc::CST_CODE_CE_SHUFVEC_EX; + Record.push_back(VE.getTypeID(C->getOperand(0)->getType())); + } Record.push_back(VE.getValueID(C->getOperand(0))); Record.push_back(VE.getValueID(C->getOperand(1))); Record.push_back(VE.getValueID(C->getOperand(2))); -- cgit v1.2.3-70-g09d2