1 //=====-- X86Subtarget.h - Define TargetMachine for the X86 ---*- C++ -*--====//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Nate Begeman and is distributed under the
6 // University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the X86 specific subclass of TargetSubtarget.
12 //===----------------------------------------------------------------------===//
14 #ifndef X86SUBTARGET_H
15 #define X86SUBTARGET_H
17 #include "llvm/Target/TargetSubtarget.h"
22 class X86Subtarget : public TargetSubtarget {
24 /// stackAlignment - The minimum alignment known to hold of the stack frame on
25 /// entry to the function and which must be maintained by every function.
26 unsigned stackAlignment;
28 /// Used by instruction selector
29 bool indirectExternAndWeakGlobals;
31 /// Used by the asm printer
32 bool asmDarwinLinkerStubs;
33 bool asmLeadingUnderscore;
34 bool asmAlignmentIsInBytes;
35 bool asmPrintDotLocalConstants;
36 bool asmPrintDotLCommConstants;
37 bool asmPrintConstantAlignment;
39 /// This constructor initializes the data members to match that
40 /// of the specified module.
42 X86Subtarget(const Module &M);
44 /// getStackAlignment - Returns the minimum alignment known to hold of the
45 /// stack frame on entry to the function and which must be maintained by every
46 /// function for this subtarget.
47 unsigned getStackAlignment() const { return stackAlignment; }
49 /// Returns true if the instruction selector should treat global values
50 /// referencing external or weak symbols as indirect rather than direct
52 bool getIndirectExternAndWeakGlobals() const {
53 return indirectExternAndWeakGlobals;
56 } // End llvm namespace