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
  38 private:
  39    BuildUtil bld;
  40 };
  41
  42 class NVC0LegalizePostRA : public Pass
  43 {
  44 public:
  45    NVC0LegalizePostRA(const Program *);
  46
  47 private:
  48    virtual bool visit(Function *);
  49    virtual bool visit(BasicBlock *);
  50
  51    void replaceZero(Instruction *);
  52    bool tryReplaceContWithBra(BasicBlock *);
  53    void propagateJoin(BasicBlock *);
  54
  55    struct TexUse
  56    {
  57       TexUse(Instruction *use, const Instruction *tex)
  58          : insn(use), tex(tex), level(-1) { }
  59       Instruction *insn;
  60       const Instruction *tex; // or split / mov
  61       int level;
  62    };
  63    struct Limits
  64    {
  65       Limits() { }
  66       Limits(int min, int max) : min(min), max(max) { }
  67       int min, max;
  68    };
  69    bool insertTextureBarriers(Function *);
  70    inline bool insnDominatedBy(const Instruction *, const Instruction *) const;
  71    void findFirstUses(const Instruction *tex, const Instruction *def,
  72                       std::list<TexUse>&);
  73    void findOverwritingDefs(const Instruction *tex, Instruction *insn,
  74                             const BasicBlock *term,
  75                             std::list<TexUse>&);
  76    void addTexUse(std::list<TexUse>&, Instruction *, const Instruction *);
  77    const Instruction *recurseDef(const Instruction *);
  78
  79 private:
  80    LValue *rZero;
  81    LValue *carry;
  82    const bool needTexBar;
  83 };
  84
  85 class NVC0LoweringPass : public Pass
  86 {
  87 public:
  88    NVC0LoweringPass(Program *);
  89
  90 protected:
  91    bool handleRDSV(Instruction *);
  92    bool handleWRSV(Instruction *);
  93    bool handleEXPORT(Instruction *);
  94    bool handleOUT(Instruction *);
  95    bool handleDIV(Instruction *);
  96    bool handleMOD(Instruction *);
  97    bool handleSQRT(Instruction *);
  98    bool handlePOW(Instruction *);
  99    bool handleTEX(TexInstruction *);
 100    bool handleTXD(TexInstruction *);
 101    bool handleTXQ(TexInstruction *);
 102    virtual bool handleManualTXD(TexInstruction *);
 103    bool handleTXLQ(TexInstruction *);
 104    bool handleATOM(Instruction *);
 105    bool handleCasExch(Instruction *, bool needCctl);
 106    void handleSurfaceOpNVE4(TexInstruction *);
 107
 108    void checkPredicate(Instruction *);
 109
 110 private:
 111    virtual bool visit(Function *);
 112    virtual bool visit(BasicBlock *);
 113    virtual bool visit(Instruction *);
 114
 115    void readTessCoord(LValue *dst, int c);
 116
 117    Value *loadResInfo32(Value *ptr, uint32_t off);
 118    Value *loadMsInfo32(Value *ptr, uint32_t off);
 119    Value *loadTexHandle(Value *ptr, unsigned int slot);
 120
 121    void adjustCoordinatesMS(TexInstruction *);
 122    void processSurfaceCoordsNVE4(TexInstruction *);
 123
 124 protected:
 125    BuildUtil bld;
 126
 127 private:
 128    const Target *const targ;
 129
 130    Symbol *gMemBase;
 131    LValue *gpEmitAddress;
 132 };
 133
 134 } // namespace nv50_ir