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| author | David Majnemer <david.majnemer@gmail.com> | 2014-07-14 22:57:27 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2014-07-14 22:57:27 +0000 |
| commit | 8bce66b09392b03ef73e0db8419dfd42aaf73c82 (patch) | |
| tree | 2b9e0581fb34175f3e7862c3a4f9b2b505eb70d1 /llvm/lib/Target/X86/X86TargetObjectFile.h | |
| parent | 2034ac81816d6de20b9e0253a6a2a09414571e0e (diff) | |
| download | bcm5719-llvm-8bce66b09392b03ef73e0db8419dfd42aaf73c82.tar.gz bcm5719-llvm-8bce66b09392b03ef73e0db8419dfd42aaf73c82.zip | |
CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF
COFF lacks a feature that other object file formats support: mergeable
sections.
To work around this, MSVC sticks constant pool entries in special COMDAT
sections so that each constant is in it's own section. This permits
unused constants to be dropped and it also allows duplicate constants in
different translation units to get merged together.
This fixes PR20262.
Differential Revision: http://reviews.llvm.org/D4482
llvm-svn: 213006
Diffstat (limited to 'llvm/lib/Target/X86/X86TargetObjectFile.h')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetObjectFile.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86TargetObjectFile.h b/llvm/lib/Target/X86/X86TargetObjectFile.h index a08ed09ffb9..4a10b7ea6b4 100644 --- a/llvm/lib/Target/X86/X86TargetObjectFile.h +++ b/llvm/lib/Target/X86/X86TargetObjectFile.h @@ -46,6 +46,11 @@ namespace llvm { const MCExpr * getExecutableRelativeSymbol(const ConstantExpr *CE, Mangler &Mang, const TargetMachine &TM) const override; + + /// \brief Given a mergeable constant with the specified size and relocation + /// information, return a section that it should be placed in. + const MCSection *getSectionForConstant(SectionKind Kind, + const Constant *C) const override; }; } // end namespace llvm |
