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Do not bother to emit a BytecodeBlock for an empty symbol table. This commonly

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occurs when the symbol table for a module has been stripped, making all of the
function local symbols go away.

This saves 6728 bytes in the stripped bytecode file of 254.gap (which obviously
has 841 functions), which isn't a ton, but helps and was easy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10750 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-01-10 19:56:59 +00:00
parent ae7fc3aede
commit 737d3cd719
1 changed files with 4 additions and 0 deletions
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4
lib/Bytecode/Writer/Writer.cpp
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@ -236,6 +236,10 @@ void BytecodeWriter::outputFunction(const Function *F) {
}
void BytecodeWriter::outputSymbolTable(const SymbolTable &MST) {
// Do not output the Bytecode block for an empty symbol table, it just wastes
// space!
if (MST.begin() == MST.end()) return;
BytecodeBlock FunctionBlock(BytecodeFormat::SymbolTable, Out);
for (SymbolTable::const_iterator TI = MST.begin(); TI != MST.end(); ++TI) {