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Add a flag to enable a darwin linker optimization 

llvm-svn: 24130
This commit is contained in:
Chris Lattner 2005-11-01 00:12:36 +00:00
parent 6b63e0c6fd
commit 7432ceef5c
1 changed files with 7 additions and 1 deletions
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8
llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
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@ -567,6 +567,13 @@ bool DarwinAsmPrinter::doFinalization(Module &M) {
<< "\t.long\t" << *i << '\n'; << "\t.long\t" << *i << '\n';
} }
// Funny Darwin hack: This flag tells the linker that no global symbols
// contain code that falls through to other global symbols (e.g. the obvious
// implementation of multiple entry points). If this doesn't occur, the
// linker can safely perform dead code stripping. Since LLVM never generates
// code that does this, it is always safe to set.
O << "\t.subsections_via_symbols\n";
AsmPrinter::doFinalization(M); AsmPrinter::doFinalization(M);
return false; // success return false; // success
} }
@ -711,7 +718,6 @@ bool AIXAsmPrinter::doFinalization(Module &M) {
O << "_section_.text:\n" O << "_section_.text:\n"
<< "\t.csect .data[RW],3\n" << "\t.csect .data[RW],3\n"
<< "\t.llong _section_.text\n"; << "\t.llong _section_.text\n";
delete Mang; delete Mang;
return false; // success return false; // success
} }