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Pack the MCSymbolELF bit fields into MCSymbol's Flags.

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This reduces MCSymolfELF from 64 bytes to 56 bytes on x86_64.

While at it, also make getOther/setOther easier to use by accepting unshifted
STO_* values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239006 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2015-06-04 02:32:20 +00:00
parent dc967a97df
commit d90fd082f9
7 changed files with 154 additions and 76 deletions
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3
lib/MC/ELFObjectWriter.cpp
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@@ -463,8 +463,7 @@ void ELFObjectWriter::writeSymbol(SymbolTableWriter &Writer,
// Other and Visibility share the same byte with Visibility using the lower
// 2 bits
uint8_t Visibility = Symbol.getVisibility();
uint8_t Other = Symbol.getOther() << 2;
Other |= Visibility;
uint8_t Other = Symbol.getOther() | Visibility;
uint64_t Value = SymbolValue(*MSD.Symbol, Layout);
uint64_t Size = 0;