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| author | Chris Lattner <sabre@nondot.org> | 2007-05-06 00:35:24 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2007-05-06 00:35:24 +0000 |
| commit | 036d1bddf29c600eb54e5f127acd9312e3bf444d (patch) | |
| tree | b9f7d45df167f9295e4c728d198cae509c291d46 /llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | |
| parent | e9759c29d1cd47de32b94a02ca065433398cabdb (diff) | |
| download | llvm-036d1bddf29c600eb54e5f127acd9312e3bf444d.zip llvm-036d1bddf29c600eb54e5f127acd9312e3bf444d.tar.gz llvm-036d1bddf29c600eb54e5f127acd9312e3bf444d.tar.bz2 | |
implement the 'string constant' optimization. This shrinks kc.bit from
2878544 to 2815788
llvm-svn: 36818
Diffstat (limited to 'llvm/lib/Bitcode/Writer/BitcodeWriter.cpp')
| -rw-r--r-- | llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp index 7198bc0..a29f23d 100644 --- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -484,6 +484,12 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal, assert (CFP->getType() == Type::DoubleTy && "Unknown FP type!"); Record.push_back(DoubleToBits((double)CFP->getValue())); } + } else if (isa<ConstantArray>(C) && cast<ConstantArray>(C)->isString()) { + // Emit constant strings specially. + Code = bitc::CST_CODE_STRING; + for (unsigned i = 0, e = C->getNumOperands(); i != e; ++i) + Record.push_back(cast<ConstantInt>(C->getOperand(i))->getZExtValue()); + } else if (isa<ConstantArray>(C) || isa<ConstantStruct>(V) || isa<ConstantVector>(V)) { Code = bitc::CST_CODE_AGGREGATE; |