From 7bcc2b15c8be4aebc6b9b8f05af6db7a451b228b Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Tue, 10 Nov 2020 14:55:36 -0800
Subject: Use integer RTTI/witness handles in existential tuples. (#1598)

* Use integer RTTI/witness handles in existential tuples.

* Fix clang error.

* Fix IR serialization to use 16bits for opcode.

* Undo accidental comment change.

* Use variable length encoding for opcode.

* Fix compile error.

* Fixing issues

* Fix code review issues.
---
 tools/render-test/cuda/cuda-compute-util.cpp | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

(limited to 'tools/render-test/cuda/cuda-compute-util.cpp')

diff --git a/tools/render-test/cuda/cuda-compute-util.cpp b/tools/render-test/cuda/cuda-compute-util.cpp
index 73ad78f0b..cc84d4a00 100644
--- a/tools/render-test/cuda/cuda-compute-util.cpp
+++ b/tools/render-test/cuda/cuda-compute-util.cpp
@@ -1409,7 +1409,7 @@ static SlangResult _fillRuntimeHandlesInBuffers(
     {
         for (auto& rtti : entry.rttiEntries)
         {
-            CUdeviceptr ptrValue = 0;
+            uint64_t ptrValue = 0;
             switch (rtti.type)
             {
             case RTTIDataEntryType::RTTIObject:
@@ -1422,7 +1422,7 @@ static SlangResult _fillRuntimeHandlesInBuffers(
                     if (!outName)
                         return SLANG_FAIL;
                     SLANG_CUDA_RETURN_ON_FAIL(cuModuleGetGlobal(
-                        &ptrValue,
+                        (CUdeviceptr*)&ptrValue,
                         nullptr,
                         cudaModule.m_module,
                         (char*)outName->getBufferPointer()));
@@ -1438,23 +1438,15 @@ static SlangResult _fillRuntimeHandlesInBuffers(
                     auto interfaceType = reflection->findTypeByName(rtti.interfaceName.getBuffer());
                     if (!interfaceType)
                         return SLANG_FAIL;
-                    ComPtr<ISlangBlob> outName;
-                    linkage->getTypeConformanceWitnessMangledName(
-                        concreteType, interfaceType, outName.writeRef());
-                    if (!outName)
-                        return SLANG_FAIL;
-                    SLANG_CUDA_RETURN_ON_FAIL(cuModuleGetGlobal(
-                        &ptrValue,
-                        nullptr,
-                        cudaModule.m_module,
-                        (char*)outName->getBufferPointer()));
+                    uint32_t id = 0xFFFFFFFF;
+                    linkage->getTypeConformanceWitnessSequentialID(
+                        concreteType, interfaceType, &id);
+                    ptrValue = id;
                     break;
                 }
             default:
                 break;
             }
-            if (!ptrValue)
-                return SLANG_FAIL;
             if (rtti.offset >= 0 &&
                 rtti.offset + sizeof(ptrValue) <=
                     entry.bufferData.getCount() * sizeof(decltype(entry.bufferData[0])))
-- 
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