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In PIC mode, GV not requiring an extra load can be used as address immediate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32028 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -4994,21 +4994,14 @@ bool X86TargetLowering::isLegalAddressImmediate(int64_t V) const {
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}
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bool X86TargetLowering::isLegalAddressImmediate(GlobalValue *GV) const {
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// GV is 64-bit but displacement field is 32-bit unless we are in small code
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// model. Mac OS X happens to support only small PIC code model.
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// FIXME: better support for other OS's.
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if (Subtarget->is64Bit() && !Subtarget->isTargetDarwin())
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// In 64-bit mode, GV is 64-bit so it won't fit in the 32-bit displacement
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// field unless we are in small code model.
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if (Subtarget->is64Bit() &&
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getTargetMachine().getCodeModel() != CodeModel::Small)
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return false;
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if (Subtarget->isTargetDarwin()) {
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Reloc::Model RModel = getTargetMachine().getRelocationModel();
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if (RModel == Reloc::Static)
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return true;
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else if (RModel == Reloc::DynamicNoPIC)
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return !(Subtarget->GVRequiresExtraLoad(GV, false));
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else
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return false;
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} else
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return true;
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Reloc::Model RModel = getTargetMachine().getRelocationModel();
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return (RModel == Reloc::Static) ||
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!Subtarget->GVRequiresExtraLoad(GV, false);
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}
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/// isShuffleMaskLegal - Targets can use this to indicate that they only
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