Do not emit FunctionBlock blocks for external functions. This shrinks
bytecode files by about 8 bytes per external function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17859 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bytecode/Writer/Writer.cpp b/lib/Bytecode/Writer/Writer.cpp
index 7d578f9..ed43bc9 100644
--- a/lib/Bytecode/Writer/Writer.cpp
+++ b/lib/Bytecode/Writer/Writer.cpp
@@ -919,6 +919,8 @@
assert(Slot >= Type::FirstDerivedTyID && "Derived type not in range!");
assert(((Slot << 5) >> 5) == Slot && "Slot # too big!");
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((unsigned)Table.getSlot(Type::VoidTy) << 5);
@@ -942,12 +944,12 @@
}
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 (F->isExternal()) return;
+ BytecodeBlock FunctionBlock(BytecodeFormat::FunctionBlockID, *this);
+ output_vbr(getEncodedLinkage(F));
+
// Get slot information about the function...
Table.incorporateFunction(F);