spirv-opt : SPV_NV_bindless_texture related changes (#4870)

source/opt/ir_loader.cpp

diff --git a/source/opt/ir_loader.cpp b/source/opt/ir_loader.cpp
index 97db9d8..734ad55 100644
--- a/source/opt/ir_loader.cpp
+++ b/source/opt/ir_loader.cpp
@@ -187,6 +187,8 @@
         module_->AddExtInstImport(std::move(spv_inst));
       } else if (opcode == SpvOpMemoryModel) {
         module_->SetMemoryModel(std::move(spv_inst));
+      } else if (opcode == SpvOpSamplerImageAddressingModeNV) {
+        module_->SetSampledImageAddressMode(std::move(spv_inst));
       } else if (opcode == SpvOpEntryPoint) {
         module_->AddEntryPoint(std::move(spv_inst));
       } else if (opcode == SpvOpExecutionMode ||

source/opt/module.cpp

diff --git a/source/opt/module.cpp b/source/opt/module.cpp
index 5983abb..c98af8f 100644
--- a/source/opt/module.cpp
+++ b/source/opt/module.cpp
@@ -90,6 +90,8 @@
   DELEGATE(extensions_);
   DELEGATE(ext_inst_imports_);
   if (memory_model_) memory_model_->ForEachInst(f, run_on_debug_line_insts);
+  if (sampled_image_address_mode_)
+    sampled_image_address_mode_->ForEachInst(f, run_on_debug_line_insts);
   DELEGATE(entry_points_);
   DELEGATE(execution_modes_);
   DELEGATE(debugs1_);
@@ -114,6 +116,9 @@
   if (memory_model_)
     static_cast<const Instruction*>(memory_model_.get())
         ->ForEachInst(f, run_on_debug_line_insts);
+  if (sampled_image_address_mode_)
+    static_cast<const Instruction*>(sampled_image_address_mode_.get())
+        ->ForEachInst(f, run_on_debug_line_insts);
   for (auto& i : entry_points_) DELEGATE(i);
   for (auto& i : execution_modes_) DELEGATE(i);
   for (auto& i : debugs1_) DELEGATE(i);

source/opt/module.h

diff --git a/source/opt/module.h b/source/opt/module.h
index 230be70..7a6be46 100644
--- a/source/opt/module.h
+++ b/source/opt/module.h
@@ -83,6 +83,9 @@
   // Set the memory model for this module.
   inline void SetMemoryModel(std::unique_ptr<Instruction> m);
 
+  // Set the sampled image addressing mode for this module.
+  inline void SetSampledImageAddressMode(std::unique_ptr<Instruction> m);
+
   // Appends an entry point instruction to this module.
   inline void AddEntryPoint(std::unique_ptr<Instruction> e);
 
@@ -158,12 +161,20 @@
   inline IteratorRange<inst_iterator> ext_inst_imports();
   inline IteratorRange<const_inst_iterator> ext_inst_imports() const;
 
-  // Return the memory model instruction contained inthis module.
+  // Return the memory model instruction contained in this module.
   inline Instruction* GetMemoryModel() { return memory_model_.get(); }
   inline const Instruction* GetMemoryModel() const {
     return memory_model_.get();
   }
 
+  // Return the sampled image address mode instruction contained in this module.
+  inline Instruction* GetSampledImageAddressMode() {
+    return sampled_image_address_mode_.get();
+  }
+  inline const Instruction* GetSampledImageAddressMode() const {
+    return sampled_image_address_mode_.get();
+  }
+
   // There are several kinds of debug instructions, according to where they can
   // appear in the logical layout of a module:
   //  - Section 7a:  OpString, OpSourceExtension, OpSource, OpSourceContinued
@@ -288,6 +299,8 @@
   InstructionList ext_inst_imports_;
   // A module only has one memory model instruction.
   std::unique_ptr<Instruction> memory_model_;
+  // A module can only have one optional sampled image addressing mode
+  std::unique_ptr<Instruction> sampled_image_address_mode_;
   InstructionList entry_points_;
   InstructionList execution_modes_;
   InstructionList debugs1_;
@@ -326,6 +339,10 @@
   memory_model_ = std::move(m);
 }
 
+inline void Module::SetSampledImageAddressMode(std::unique_ptr<Instruction> m) {
+  sampled_image_address_mode_ = std::move(m);
+}
+
 inline void Module::AddEntryPoint(std::unique_ptr<Instruction> e) {
   entry_points_.push_back(std::move(e));
 }