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Do not emit FunctionBlock blocks for external functions. This shrinks 

bytecode files by about 8 bytes per external function

llvm-svn: 17859
This commit is contained in:
Chris Lattner 2004-11-15 22:39:49 +00:00
parent 642f8c5ed4
commit 3b6bb48c16
1 changed files with 5 additions and 3 deletions
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8
llvm/lib/Bytecode/Writer/Writer.cpp
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@ -919,6 +919,8 @@ void BytecodeWriter::outputModuleInfoBlock(const Module *M) {
assert(Slot >= Type::FirstDerivedTyID && "Derived type not in range!"); assert(Slot >= Type::FirstDerivedTyID && "Derived type not in range!");
assert(((Slot << 5) >> 5) == Slot && "Slot # too big!"); assert(((Slot << 5) >> 5) == Slot && "Slot # too big!");
unsigned ID = (Slot << 5) + 1; unsigned ID = (Slot << 5) + 1;
if (I->isExternal()) // If external, we don't have an FunctionInfo block.
ID |= 1 << 4;
output_vbr(ID); output_vbr(ID);
} }
output_vbr((unsigned)Table.getSlot(Type::VoidTy) << 5); output_vbr((unsigned)Table.getSlot(Type::VoidTy) << 5);
@ -942,12 +944,12 @@ void BytecodeWriter::outputInstructions(const Function *F) {
} }
void BytecodeWriter::outputFunction(const Function *F) { void BytecodeWriter::outputFunction(const Function *F) {
BytecodeBlock FunctionBlock(BytecodeFormat::FunctionBlockID, *this);
output_vbr(getEncodedLinkage(F));
// If this is an external function, there is nothing else to emit! // If this is an external function, there is nothing else to emit!
if (F->isExternal()) return; if (F->isExternal()) return;
BytecodeBlock FunctionBlock(BytecodeFormat::FunctionBlockID, *this);
output_vbr(getEncodedLinkage(F));
// Get slot information about the function... // Get slot information about the function...
Table.incorporateFunction(F); Table.incorporateFunction(F);