Add spirv intrinsic definition for `printf`. (#3340)

1 files changed, 20 insertions, 0 deletions

diff --git a/source/slang/slang-emit-spirv.cpp b/source/slang/slang-emit-spirv.cpp
index 869484ab9..d071328c4 100644
--- a/source/slang/slang-emit-spirv.cpp
+++ b/source/slang/slang-emit-spirv.cpp
@@ -1144,6 +1144,21 @@ struct SPIRVEmitContext
         return m_NonSemanticDebugInfoExtInst;
     }
 
+    /// The SPIRV OpExtInstImport inst that represents the NonSemantic debug info
+    /// extended instruction set.
+    SpvInst* m_NonSemanticDebugPrintfExtInst = nullptr;
+
+    SpvInst* getNonSemanticDebugPrintfExtInst()
+    {
+        if (m_NonSemanticDebugPrintfExtInst)
+            return m_NonSemanticDebugPrintfExtInst;
+        m_NonSemanticDebugPrintfExtInst = emitOpExtInstImport(
+            getSection(SpvLogicalSectionID::ExtIntInstImports),
+            nullptr,
+            UnownedStringSlice("NonSemantic.DebugPrintf"));
+        return m_NonSemanticDebugPrintfExtInst;
+    }
+
     // Now that we've gotten the core infrastructure out of the way,
     // let's start looking at emitting some instructions that make
     // up a SPIR-V module.
@@ -4623,6 +4638,11 @@ struct SPIRVEmitContext
                     emitOperand(getGLSL450ExtInst());
                     break;
                 }
+                case kIROp_SPIRVAsmOperandDebugPrintfSet:
+                {
+                    emitOperand(getNonSemanticDebugPrintfExtInst());
+                    break;
+                }
                 default:
                     SLANG_UNREACHABLE("Unhandled case in emitSPIRVAsm");
                 }