src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.h

   1 /*
   2  * Copyright 2011 Christoph Bumiller
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #include "codegen/nv50_ir.h"
  24 #include "codegen/nv50_ir_build_util.h"
  25
  26 namespace nv50_ir {
  27
  28 class NVC0LegalizeSSA : public Pass
  29 {
  30 private:
  31    virtual bool visit(BasicBlock *);
  32    virtual bool visit(Function *);
  33
  34    // we want to insert calls to the builtin library only after optimization
  35    void handleDIV(Instruction *); // integer division, modulus
  36    void handleRCPRSQ(Instruction *); // double precision float recip/rsqrt
  37    void handleFTZ(Instruction *);
  38
  39 private:
  40    BuildUtil bld;
  41 };
  42
  43 class NVC0LegalizePostRA : public Pass
  44 {
  45 public:
  46    NVC0LegalizePostRA(const Program *);
  47
  48 private:
  49    virtual bool visit(Function *);
  50    virtual bool visit(BasicBlock *);
  51
  52    void replaceZero(Instruction *);
  53    bool tryReplaceContWithBra(BasicBlock *);
  54    void propagateJoin(BasicBlock *);
  55
  56    struct TexUse
  57    {
  58       TexUse(Instruction *use, const Instruction *tex)
  59          : insn(use), tex(tex), level(-1) { }
  60       Instruction *insn;
  61       const Instruction *tex; // or split / mov
  62       int level;
  63    };
  64    struct Limits
  65    {
  66       Limits() { }
  67       Limits(int min, int max) : min(min), max(max) { }
  68       int min, max;
  69    };
  70    bool insertTextureBarriers(Function *);
  71    inline bool insnDominatedBy(const Instruction *, const Instruction *) const;
  72    void findFirstUses(const Instruction *tex, const Instruction *def,
  73                       std::list<TexUse>&,
  74                       unordered_set<const Instruction *>&);
  75    void findOverwritingDefs(const Instruction *tex, Instruction *insn,
  76                             const BasicBlock *term,
  77                             std::list<TexUse>&);
  78    void addTexUse(std::list<TexUse>&, Instruction *, const Instruction *);
  79    const Instruction *recurseDef(const Instruction *);
  80
  81 private:
  82    LValue *rZero;
  83    LValue *carry;
  84    const bool needTexBar;
  85 };
  86
  87 class NVC0LoweringPass : public Pass
  88 {
  89 public:
  90    NVC0LoweringPass(Program *);
  91
  92 protected:
  93    bool handleRDSV(Instruction *);
  94    bool handleWRSV(Instruction *);
  95    bool handleEXPORT(Instruction *);
  96    bool handleOUT(Instruction *);
  97    bool handleDIV(Instruction *);
  98    bool handleMOD(Instruction *);
  99    bool handleSQRT(Instruction *);
 100    bool handlePOW(Instruction *);
 101    bool handleTEX(TexInstruction *);
 102    bool handleTXD(TexInstruction *);
 103    bool handleTXQ(TexInstruction *);
 104    virtual bool handleManualTXD(TexInstruction *);
 105    bool handleTXLQ(TexInstruction *);
 106    bool handleATOM(Instruction *);
 107    bool handleCasExch(Instruction *, bool needCctl);
 108    void handleSurfaceOpNVE4(TexInstruction *);
 109
 110    void checkPredicate(Instruction *);
 111
 112    virtual bool visit(Instruction *);
 113
 114 private:
 115    virtual bool visit(Function *);
 116    virtual bool visit(BasicBlock *);
 117
 118    void readTessCoord(LValue *dst, int c);
 119
 120    Value *loadResInfo32(Value *ptr, uint32_t off);
 121    Value *loadMsInfo32(Value *ptr, uint32_t off);
 122    Value *loadTexHandle(Value *ptr, unsigned int slot);
 123
 124    void adjustCoordinatesMS(TexInstruction *);
 125    void processSurfaceCoordsNVE4(TexInstruction *);
 126
 127 protected:
 128    BuildUtil bld;
 129
 130 private:
 131    const Target *const targ;
 132
 133    Symbol *gMemBase;
 134    LValue *gpEmitAddress;
 135 };
 136
 137 } // namespace nv50_ir