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, bool after)
  59          : insn(use), tex(tex), after(after), level(-1) { }
  60       Instruction *insn;
  61       const Instruction *tex; // or split / mov
  62       bool after;
  63       int level;
  64    };
  65    struct Limits
  66    {
  67       Limits() { }
  68       Limits(int min, int max) : min(min), max(max) { }
  69       int min, max;
  70    };
  71    bool insertTextureBarriers(Function *);
  72    inline bool insnDominatedBy(const Instruction *, const Instruction *) const;
  73    void findFirstUses(Instruction *texi, std::list<TexUse> &uses);
  74    void findFirstUsesBB(int minGPR, int maxGPR, Instruction *start,
  75                         const Instruction *texi, std::list<TexUse> &uses,
  76                         unordered_set<const BasicBlock *> &visited);
  77    void addTexUse(std::list<TexUse>&, Instruction *, const Instruction *);
  78    const Instruction *recurseDef(const Instruction *);
  79
  80 private:
  81    LValue *rZero;
  82    LValue *carry;
  83    LValue *pOne;
  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 handleSUQ(TexInstruction *);
 107    bool handleATOM(Instruction *);
 108    bool handleCasExch(Instruction *, bool needCctl);
 109    void handleSurfaceOpNVE4(TexInstruction *);
 110    void handleSurfaceOpNVC0(TexInstruction *);
 111    void handleSharedATOM(Instruction *);
 112    void handleSharedATOMNVE4(Instruction *);
 113    void handleLDST(Instruction *);
 114    bool handleBUFQ(Instruction *);
 115
 116    void checkPredicate(Instruction *);
 117
 118    virtual bool visit(Instruction *);
 119
 120 private:
 121    virtual bool visit(Function *);
 122    virtual bool visit(BasicBlock *);
 123
 124    void readTessCoord(LValue *dst, int c);
 125
 126    Value *loadResInfo32(Value *ptr, uint32_t off, uint16_t base);
 127    Value *loadResInfo64(Value *ptr, uint32_t off, uint16_t base);
 128    Value *loadResLength32(Value *ptr, uint32_t off, uint16_t base);
 129    Value *loadSuInfo32(Value *ptr, int slot, uint32_t off);
 130    Value *loadBufInfo64(Value *ptr, uint32_t off);
 131    Value *loadBufLength32(Value *ptr, uint32_t off);
 132    Value *loadUboInfo64(Value *ptr, uint32_t off);
 133    Value *loadUboLength32(Value *ptr, uint32_t off);
 134    Value *loadMsInfo32(Value *ptr, uint32_t off);
 135    Value *loadTexHandle(Value *ptr, unsigned int slot);
 136
 137    void adjustCoordinatesMS(TexInstruction *);
 138    void processSurfaceCoordsNVE4(TexInstruction *);
 139    void processSurfaceCoordsNVC0(TexInstruction *);
 140    void convertSurfaceFormat(TexInstruction *);
 141
 142 protected:
 143    BuildUtil bld;
 144
 145 private:
 146    const Target *const targ;
 147
 148    Symbol *gMemBase;
 149    LValue *gpEmitAddress;
 150 };
 151
 152 } // namespace nv50_ir