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1 | //===-- X86.h - Top-level interface for X86 representation ------*- 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 | //===----------------------------------------------------------------------===// | |
9 | // | |
10 | // This file contains the entry points for global functions defined in the x86 | |
11 | // target library, as used by the LLVM JIT. | |
12 | // | |
13 | //===----------------------------------------------------------------------===// | |
14 | ||
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15 | #ifndef LLVM_LIB_TARGET_X86_X86_H |
16 | #define LLVM_LIB_TARGET_X86_X86_H | |
223e47cc | 17 | |
1a4d82fc | 18 | #include "llvm/Support/CodeGen.h" |
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19 | |
20 | namespace llvm { | |
21 | ||
22 | class FunctionPass; | |
1a4d82fc | 23 | class ImmutablePass; |
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24 | class X86TargetMachine; |
25 | ||
26 | /// createX86ISelDag - This pass converts a legalized DAG into a | |
27 | /// X86-specific DAG, ready for instruction scheduling. | |
28 | /// | |
29 | FunctionPass *createX86ISelDag(X86TargetMachine &TM, | |
30 | CodeGenOpt::Level OptLevel); | |
31 | ||
1a4d82fc | 32 | /// createX86GlobalBaseRegPass - This pass initializes a global base |
223e47cc | 33 | /// register for PIC on x86-32. |
1a4d82fc | 34 | FunctionPass* createX86GlobalBaseRegPass(); |
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35 | |
36 | /// createCleanupLocalDynamicTLSPass() - This pass combines multiple accesses | |
37 | /// to local-dynamic TLS variables so that the TLS base address for the module | |
38 | /// is only fetched once per execution path through the function. | |
39 | FunctionPass *createCleanupLocalDynamicTLSPass(); | |
40 | ||
41 | /// createX86FloatingPointStackifierPass - This function returns a pass which | |
42 | /// converts floating point register references and pseudo instructions into | |
43 | /// floating point stack references and physical instructions. | |
44 | /// | |
45 | FunctionPass *createX86FloatingPointStackifierPass(); | |
46 | ||
47 | /// createX86IssueVZeroUpperPass - This pass inserts AVX vzeroupper instructions | |
48 | /// before each call to avoid transition penalty between functions encoded with | |
49 | /// AVX and SSE. | |
50 | FunctionPass *createX86IssueVZeroUpperPass(); | |
51 | ||
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52 | /// createX86EmitCodeToMemory - Returns a pass that converts a register |
53 | /// allocated function into raw machine code in a dynamically | |
54 | /// allocated chunk of memory. | |
55 | /// | |
56 | FunctionPass *createEmitX86CodeToMemory(); | |
57 | ||
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58 | /// \brief Creates an X86-specific Target Transformation Info pass. |
59 | ImmutablePass *createX86TargetTransformInfoPass(const X86TargetMachine *TM); | |
60 | ||
61 | /// createX86PadShortFunctions - Return a pass that pads short functions | |
62 | /// with NOOPs. This will prevent a stall when returning on the Atom. | |
63 | FunctionPass *createX86PadShortFunctions(); | |
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64 | /// createX86FixupLEAs - Return a a pass that selectively replaces |
65 | /// certain instructions (like add, sub, inc, dec, some shifts, | |
66 | /// and some multiplies) by equivalent LEA instructions, in order | |
67 | /// to eliminate execution delays in some Atom processors. | |
68 | FunctionPass *createX86FixupLEAs(); | |
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69 | |
70 | } // End llvm namespace | |
71 | ||
72 | #endif |