From e5a75563a1ba2e378353af8b937b8b7bb0fe2c2b Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Tue, 21 Jun 2022 14:55:59 -0700
Subject: Lower throwing COM interface method. (#2282)

* Lower throwing COM interface method.

* Fix.

* Fix warnings.

Co-authored-by: Yong He <yhe@nvidia.com>
---
 source/slang/slang-ir.cpp | 67 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

(limited to 'source/slang/slang-ir.cpp')

diff --git a/source/slang/slang-ir.cpp b/source/slang/slang-ir.cpp
index 562d0ea1a..42ff5823b 100644
--- a/source/slang/slang-ir.cpp
+++ b/source/slang/slang-ir.cpp
@@ -3224,6 +3224,16 @@ namespace Slang
         return emitMakeTuple(type, count, args);
     }
 
+    IRInst* IRBuilder::emitMakeString(IRInst* nativeStr)
+    {
+        return emitIntrinsicInst(getStringType(), kIROp_makeString, 1, &nativeStr);
+    }
+
+    IRInst* IRBuilder::emitGetNativeString(IRInst* str)
+    {
+        return emitIntrinsicInst(getNativeStringType(), kIROp_getNativeStr, 1, &str);
+    }
+
     IRInst* IRBuilder::emitGetTupleElement(IRType* type, IRInst* tuple, UInt element)
     {
         // As a quick simplification/optimization, if the user requests
@@ -4022,6 +4032,18 @@ namespace Slang
         return inst;
     }
 
+    IRInst* IRBuilder::emitBranch(IRBlock* block, Int argCount, IRInst* const* args)
+    {
+        List<IRInst*> argList;
+        argList.add(block);
+        for (Int i = 0; i < argCount; ++i)
+            argList.add(args[i]);
+        auto inst =
+            createInst<IRUnconditionalBranch>(this, kIROp_unconditionalBranch, nullptr, argList.getCount(), argList.getBuffer());
+        addInst(inst);
+        return inst;
+    }
+
     IRInst* IRBuilder::emitBreak(
         IRBlock*    target)
     {
@@ -4089,6 +4111,25 @@ namespace Slang
         return inst;
     }
 
+    IRInst* IRBuilder::emitIfElseWithBlocks(
+        IRInst* val, IRBlock*& outTrueBlock, IRBlock*& outFalseBlock, IRBlock*& outAfterBlock)
+    {
+        outTrueBlock = createBlock();
+        outAfterBlock = createBlock();
+        outFalseBlock = createBlock();
+        auto f = getFunc();
+        SLANG_ASSERT(f);
+        if (f)
+        {
+            f->addBlock(outTrueBlock);
+            f->addBlock(outAfterBlock);
+            f->addBlock(outFalseBlock);
+        }
+        auto result = emitIfElse(val, outTrueBlock, outFalseBlock, outAfterBlock);
+        setInsertInto(outTrueBlock);
+        return result;
+    }
+
     IRInst* IRBuilder::emitIf(
         IRInst*    val,
         IRBlock*    trueBlock,
@@ -4097,6 +4138,18 @@ namespace Slang
         return emitIfElse(val, trueBlock, afterBlock, afterBlock);
     }
 
+    IRInst* IRBuilder::emitIfWithBlocks(
+        IRInst* val, IRBlock*& outTrueBlock, IRBlock*& outAfterBlock)
+    {
+        outTrueBlock = createBlock();
+        outAfterBlock = createBlock();
+        auto result = emitIf(val, outTrueBlock, outAfterBlock);
+        insertBlock(outTrueBlock);
+        insertBlock(outAfterBlock);
+        setInsertInto(outTrueBlock);
+        return result;
+    }
+
     IRInst* IRBuilder::emitLoopTest(
         IRInst*     val,
         IRBlock*    bodyBlock,
@@ -4320,6 +4373,13 @@ namespace Slang
         return inst;
     }
 
+    IRInst* IRBuilder::emitLess(IRInst* left, IRInst* right)
+    {
+        auto inst = createInst<IRInst>(this, kIROp_Less, getBoolType(), left, right);
+        addInst(inst);
+        return inst;
+    }
+
     IRInst* IRBuilder::emitMul(IRType* type, IRInst* left, IRInst* right)
     {
         auto inst = createInst<IRInst>(
@@ -5886,6 +5946,13 @@ namespace Slang
         case kIROp_MakeMatrix:
         case kIROp_makeArray:
         case kIROp_makeStruct:
+        case kIROp_makeString:
+        case kIROp_getNativeStr:
+        case kIROp_MakeResultError:
+        case kIROp_MakeResultValue:
+        case kIROp_GetResultError:
+        case kIROp_GetResultValue:
+        case kIROp_IsResultError:
         case kIROp_Load:    // We are ignoring the possibility of loads from bad addresses, or `volatile` loads
         case kIROp_ImageSubscript:
         case kIROp_FieldExtract:
-- 
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