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TargetInfo.h (204643) TargetInfo.h (204793)
1//===---- TargetInfo.h - Encapsulate target details -------------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//

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51 /// pointers to uint64_t or zero-extend them (the default). Has
52 /// no effect for targets:
53 /// - that have 64-bit pointers, or
54 /// - that cannot address through registers larger than pointers, or
55 /// - that implicitly ignore/truncate the top bits when addressing
56 /// through such registers.
57 virtual bool extendPointerWithSExt() const { return false; }
58
1//===---- TargetInfo.h - Encapsulate target details -------------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//

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51 /// pointers to uint64_t or zero-extend them (the default). Has
52 /// no effect for targets:
53 /// - that have 64-bit pointers, or
54 /// - that cannot address through registers larger than pointers, or
55 /// - that implicitly ignore/truncate the top bits when addressing
56 /// through such registers.
57 virtual bool extendPointerWithSExt() const { return false; }
58
59 /// Determines the DWARF register number for the stack pointer, for
60 /// exception-handling purposes. Implements __builtin_dwarf_sp_column.
61 ///
62 /// Returns -1 if the operation is unsupported by this target.
63 virtual int getDwarfEHStackPointer(CodeGen::CodeGenModule &M) const {
64 return -1;
65 }
66
67 /// Initializes the given DWARF EH register-size table, a char*.
68 /// Implements __builtin_init_dwarf_reg_size_table.
69 ///
70 /// Returns true if the operation is unsupported by this target.
71 virtual bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF,
72 llvm::Value *Address) const {
73 return true;
74 }
75
59 /// Performs the code-generation required to convert a return
60 /// address as stored by the system into the actual address of the
61 /// next instruction that will be executed.
62 ///
63 /// Used by __builtin_extract_return_addr().
64 virtual llvm::Value *decodeReturnAddress(CodeGen::CodeGenFunction &CGF,
65 llvm::Value *Address) const {
66 return Address;

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76 /// Performs the code-generation required to convert a return
77 /// address as stored by the system into the actual address of the
78 /// next instruction that will be executed.
79 ///
80 /// Used by __builtin_extract_return_addr().
81 virtual llvm::Value *decodeReturnAddress(CodeGen::CodeGenFunction &CGF,
82 llvm::Value *Address) const {
83 return Address;

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