[Mesa-dev] [PATCH v2 3/9] nvc0/ir: Emit OP_SHFL

[Boyan Ding]

v2: (Samuel Pitoiset)
Add an assertion to check if the target is Kepler
Make sure that asImm() is not NULL
---
 .../drivers/nouveau/codegen/nv50_ir_emit_nvc0.cpp  | 59 ++++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nvc0.cpp 
b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nvc0.cpp
index d5a310f88c..ee2d2f06c1 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nvc0.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nvc0.cpp
@@ -150,6 +150,8 @@ private:
 
    void emitPIXLD(const Instruction *);
 
+   void emitSHFL(const Instruction *);
+
    void emitVOTE(const Instruction *);
 
    inline void defId(const ValueDef&, const int pos);
@@ -2529,6 +2531,60 @@ CodeEmitterNVC0::emitPIXLD(const Instruction *i)
 }
 
 void
+CodeEmitterNVC0::emitSHFL(const Instruction *i)
+{
+   const ImmediateValue *imm;
+
+   assert(targ->getChipset() >= NVISA_GK104_CHIPSET);
+
+   code[0] = 0x00000005;
+   code[1] = 0x88000000 | (i->subOp << 23);
+
+   emitPredicate(i);
+
+   defId(i->def(0), 14);
+   srcId(i->src(0), 20);
+
+   switch (i->src(1).getFile()) {
+   case FILE_GPR:
+      srcId(i->src(1), 26);
+      break;
+   case FILE_IMMEDIATE:
+      imm = i->src(1).get()->asImm();
+      assert(imm);
+      code[0] |= (imm->reg.data.u32 & 0x1f) << 26;
+      code[0] |= 1 << 5;
+      break;
+   default:
+      assert(!"invalid src1 file");
+      break;
+   }
+
+   switch (i->src(2).getFile()) {
+   case FILE_GPR:
+      srcId(i->src(2), 49);
+      break;
+   case FILE_IMMEDIATE:
+      imm = i->src(2).get()->asImm();
+      assert(imm);
+      code[1] |= (imm->reg.data.u32 & 0x1fff) << 10;
+      code[0] |= 1 << 6;
+      break;
+   default:
+      assert(!"invalid src2 file");
+      break;
+   }
+
+   if (!i->defExists(1)) {
+      code[0] |= 3 << 8;
+      code[1] |= 1 << 26;
+   } else {
+      assert(i->def(1).getFile() == FILE_PREDICATE);
+      setPDSTL(i->def(1));
+   }
+}
+
+void
 CodeEmitterNVC0::emitVOTE(const Instruction *i)
 {
    assert(i->src(0).getFile() == FILE_PREDICATE);
@@ -2837,6 +2893,9 @@ CodeEmitterNVC0::emitInstruction(Instruction *insn)
    case OP_PIXLD:
       emitPIXLD(insn);
       break;
+   case OP_SHFL:
+      emitSHFL(insn);
+      break;
    case OP_VOTE:
       emitVOTE(insn);
       break;
-- 
2.12.1

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