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https://github.com/c64scene-ar/llvm-6502.git
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Use rip-rel addressing on win64 by default. For this we just
defaults to small pic code model. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111741 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -73,7 +73,7 @@ ClassifyGlobalReference(const GlobalValue *GV, const TargetMachine &TM) const {
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if (GV->hasDefaultVisibility() &&
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(isDecl || GV->isWeakForLinker()))
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return X86II::MO_GOTPCREL;
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} else {
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} else if (!isTargetWin64()) {
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assert(isTargetELF() && "Unknown rip-relative target");
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// Extra load is needed for all externally visible.
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@ -115,12 +115,18 @@ X86TargetMachine::X86TargetMachine(const Target &T, const std::string &TT,
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// If no relocation model was picked, default as appropriate for the target.
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if (getRelocationModel() == Reloc::Default) {
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if (!Subtarget.isTargetDarwin())
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setRelocationModel(Reloc::Static);
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else if (Subtarget.is64Bit())
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// Darwin defaults to PIC in 64 bit mode and dynamic-no-pic in 32 bit mode.
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// Win64 requires rip-rel addressing, thus we force it to PIC. Otherwise we
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// use static relocation model by default.
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if (Subtarget.isTargetDarwin()) {
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if (Subtarget.is64Bit())
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setRelocationModel(Reloc::PIC_);
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else
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setRelocationModel(Reloc::DynamicNoPIC);
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} else if (Subtarget.isTargetWin64())
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setRelocationModel(Reloc::PIC_);
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else
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setRelocationModel(Reloc::Static);
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}
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assert(getRelocationModel() != Reloc::Default &&
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@ -148,21 +154,19 @@ X86TargetMachine::X86TargetMachine(const Target &T, const std::string &TT,
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if (getRelocationModel() == Reloc::Static) {
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// Unless we're in PIC or DynamicNoPIC mode, set the PIC style to None.
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Subtarget.setPICStyle(PICStyles::None);
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} else if (Subtarget.is64Bit()) {
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// PIC in 64 bit mode is always rip-rel.
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Subtarget.setPICStyle(PICStyles::RIPRel);
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} else if (Subtarget.isTargetCygMing()) {
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Subtarget.setPICStyle(PICStyles::None);
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} else if (Subtarget.isTargetDarwin()) {
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if (Subtarget.is64Bit())
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Subtarget.setPICStyle(PICStyles::RIPRel);
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else if (getRelocationModel() == Reloc::PIC_)
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if (getRelocationModel() == Reloc::PIC_)
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Subtarget.setPICStyle(PICStyles::StubPIC);
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else {
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assert(getRelocationModel() == Reloc::DynamicNoPIC);
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Subtarget.setPICStyle(PICStyles::StubDynamicNoPIC);
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}
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} else if (Subtarget.isTargetELF()) {
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if (Subtarget.is64Bit())
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Subtarget.setPICStyle(PICStyles::RIPRel);
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else
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Subtarget.setPICStyle(PICStyles::GOT);
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}
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