From 493ad88e1b6598e3827546854b0c8336b42b36a2 Mon Sep 17 00:00:00 2001
From: Ilia Mirkin <imirkin@alum.mit.edu>
Date: Fri, 18 Jul 2014 22:20:42 -0400
Subject: [PATCH] gk110/ir: add emission of dadd/dmul/dmad opcodes

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
---
 .../nouveau/codegen/nv50_ir_emit_gk110.cpp    | 80 ++++++++++++++++++-
 1 file changed, 77 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
index d8adc93eb5c..204d911ae17 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
@@ -84,11 +84,14 @@ private:
 
    void emitUADD(const Instruction *);
    void emitFADD(const Instruction *);
+   void emitDADD(const Instruction *);
    void emitIMUL(const Instruction *);
    void emitFMUL(const Instruction *);
+   void emitDMUL(const Instruction *);
    void emitIMAD(const Instruction *);
    void emitISAD(const Instruction *);
    void emitFMAD(const Instruction *);
+   void emitDMAD(const Instruction *);
 
    void emitNOT(const Instruction *);
    void emitLogicOp(const Instruction *, uint8_t subOp);
@@ -478,6 +481,28 @@ CodeEmitterGK110::emitFMAD(const Instruction *i)
    }
 }
 
+void
+CodeEmitterGK110::emitDMAD(const Instruction *i)
+{
+   assert(!i->saturate);
+   assert(!i->ftz);
+
+   emitForm_21(i, 0x1b8, 0xb38);
+
+   NEG_(34, 2);
+   RND_(36, F);
+
+   bool neg1 = (i->src(0).mod ^ i->src(1).mod).neg();
+
+   if (code[0] & 0x1) {
+      if (neg1)
+         code[1] ^= 1 << 27;
+   } else
+   if (neg1) {
+      code[1] |= 1 << 19;
+   }
+}
+
 void
 CodeEmitterGK110::emitFMUL(const Instruction *i)
 {
@@ -515,6 +540,29 @@ CodeEmitterGK110::emitFMUL(const Instruction *i)
    }
 }
 
+void
+CodeEmitterGK110::emitDMUL(const Instruction *i)
+{
+   bool neg = (i->src(0).mod ^ i->src(1).mod).neg();
+
+   assert(!i->postFactor);
+   assert(!i->saturate);
+   assert(!i->ftz);
+   assert(!i->dnz);
+
+   emitForm_21(i, 0x240, 0xc40);
+
+   RND_(2a, F);
+
+   if (code[0] & 0x1) {
+      if (neg)
+         code[1] ^= 1 << 27;
+   } else
+   if (neg) {
+      code[1] |= 1 << 19;
+   }
+}
+
 void
 CodeEmitterGK110::emitIMUL(const Instruction *i)
 {
@@ -573,6 +621,26 @@ CodeEmitterGK110::emitFADD(const Instruction *i)
    }
 }
 
+void
+CodeEmitterGK110::emitDADD(const Instruction *i)
+{
+   assert(!i->saturate);
+   assert(!i->ftz);
+
+   emitForm_21(i, 0x238, 0xc38);
+   RND_(2a, F);
+   ABS_(31, 0);
+   NEG_(33, 0);
+   if (code[0] & 0x1) {
+      modNegAbsF32_3b(i, 1);
+      if (i->op == OP_SUB) code[1] ^= 1 << 27;
+   } else {
+      NEG_(30, 1);
+      ABS_(34, 1);
+      if (i->op == OP_SUB) code[1] ^= 1 << 16;
+   }
+}
+
 void
 CodeEmitterGK110::emitUADD(const Instruction *i)
 {
@@ -1634,20 +1702,26 @@ CodeEmitterGK110::emitInstruction(Instruction *insn)
       break;
    case OP_ADD:
    case OP_SUB:
-      if (isFloatType(insn->dType))
+      if (insn->dType == TYPE_F64)
+         emitDADD(insn);
+      else if (isFloatType(insn->dType))
          emitFADD(insn);
       else
          emitUADD(insn);
       break;
    case OP_MUL:
-      if (isFloatType(insn->dType))
+      if (insn->dType == TYPE_F64)
+         emitDMUL(insn);
+      else if (isFloatType(insn->dType))
          emitFMUL(insn);
       else
          emitIMUL(insn);
       break;
    case OP_MAD:
    case OP_FMA:
-      if (isFloatType(insn->dType))
+      if (insn->dType == TYPE_F64)
+         emitDMAD(insn);
+      else if (isFloatType(insn->dType))
          emitFMAD(insn);
       else
          emitIMAD(insn);
-- 
2.30.2