[Beignet] [PATCH V2 4/5] GBE/DebugInfo: Pass debug info : SEL IR => GenInsn

[Bai Yannan]

    1. Add a structure DBGInfo in GenEncoder class, storing debug infomation for subsequentlt passing to GenInsn.
    2. Add a vector<DebugInfo> in GenEncoder class, storing debug information corresponding to vector<GenInstruction>.
    3. Pass debug information from SEL IR firstly to Gen Encoder, then add to vector when emitting, if OCL_DEBUGINFO is true.

Signed-off-by: Yannan Bai <yannan.bai at intel.com>
---
 backend/src/backend/gen_context.cpp |  6 ++++++
 backend/src/backend/gen_encoder.cpp | 13 +++++++++++++
 backend/src/backend/gen_encoder.hpp |  3 +++
 3 files changed, 22 insertions(+)

diff --git a/backend/src/backend/gen_context.cpp b/backend/src/backend/gen_context.cpp
index 9868043..b3aacc9 100644
--- a/backend/src/backend/gen_context.cpp
+++ b/backend/src/backend/gen_context.cpp
@@ -92,6 +92,10 @@ namespace gbe
     return i;
   }
 
+  extern bool OCL_DEBUGINFO; // first defined by calling BVAR in program.cpp
+#define SET_GENINSN_DBGINFO(I) \
+  if(OCL_DEBUGINFO) p->DBGInfo = I.DBGInfo;
+      
   void GenContext::emitInstructionStream(void) {
     // Emit Gen ISA
     for (auto &block : *sel->blockList)
@@ -101,6 +105,7 @@ namespace gbe
       // no more virtual register here in that part of the code generation
       GBE_ASSERT(insn.state.physicalFlag);
       p->curr = insn.state;
+      SET_GENINSN_DBGINFO(insn);
       switch (opcode) {
 #define DECL_SELECTION_IR(OPCODE, FAMILY) \
   case SEL_OP_##OPCODE: this->emit##FAMILY(insn); break;
@@ -114,6 +119,7 @@ namespace gbe
     for(int i = 0; i < 8; i++)
 	p->NOP();
   }
+#undef SET_GENINSN_DBGINFO
 
   bool GenContext::patchBranches(void) {
     using namespace ir;
diff --git a/backend/src/backend/gen_encoder.cpp b/backend/src/backend/gen_encoder.cpp
index b153a2c..713b29f 100644
--- a/backend/src/backend/gen_encoder.cpp
+++ b/backend/src/backend/gen_encoder.cpp
@@ -591,11 +591,23 @@ namespace gbe
       this->setSrc1(insn, bti);
     }
   }
+
+  extern bool OCL_DEBUGINFO; // first defined by calling BVAR in program.cpp
+  void GenEncoder::setDBGInfo(DebugInfo in, bool hasHigh)
+  {
+    if(OCL_DEBUGINFO)
+    {
+      storedbg.push_back(in);
+      if(hasHigh) storedbg.push_back(in);
+    }
+  }
+  
   GenCompactInstruction *GenEncoder::nextCompact(uint32_t opcode) {
     GenCompactInstruction insn;
     std::memset(&insn, 0, sizeof(GenCompactInstruction));
     insn.bits1.opcode = opcode;
     this->store.push_back(insn.low);
+    setDBGInfo(DBGInfo, false);
     return (GenCompactInstruction *)&this->store.back();
   }
 
@@ -605,6 +617,7 @@ namespace gbe
      insn.header.opcode = opcode;
      this->store.push_back(insn.low);
      this->store.push_back(insn.high);
+     setDBGInfo(DBGInfo, true);
      return (GenNativeInstruction *)(&this->store.back()-1);
   }
 
diff --git a/backend/src/backend/gen_encoder.hpp b/backend/src/backend/gen_encoder.hpp
index e9945e8..2fc0e5d 100644
--- a/backend/src/backend/gen_encoder.hpp
+++ b/backend/src/backend/gen_encoder.hpp
@@ -88,6 +88,9 @@ namespace gbe
     uint32_t deviceID;
     /*! simd width for this codegen */
     uint32_t simdWidth;
+    DebugInfo DBGInfo;
+    vector<DebugInfo> storedbg;
+    void setDBGInfo(DebugInfo in, bool hasHigh);
     ////////////////////////////////////////////////////////////////////////
     // Encoding functions
     ////////////////////////////////////////////////////////////////////////
-- 
1.9.1