From 115920406ebd747e02e1e6a8e4595f7d88eef0d9 Mon Sep 17 00:00:00 2001
From: Dietrich Geisler <dag368@cornell.edu>
Date: Mon, 20 Jul 2020 14:53:23 -0400
Subject: Multiple Entry Point Backend (#1437)

* Multiple Entry Point Backend

This PR introduces changes to the IR linking, emitting, and options for
multiple entry points.  Specifically, this PR updates several locations
to support a (potentially empty) list of entry points, adding list infrastructure and looping over entry points as appropriate.

* Formatting change

* Updated unknown target case to not require an entry point

* Formatting and list consts updates

Co-authored-by: Tim Foley <tfoleyNV@users.noreply.github.com>
---
 source/slang/slang-emit-spirv.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'source/slang/slang-emit-spirv.cpp')

diff --git a/source/slang/slang-emit-spirv.cpp b/source/slang/slang-emit-spirv.cpp
index 0ca523ecf..915d963c0 100644
--- a/source/slang/slang-emit-spirv.cpp
+++ b/source/slang/slang-emit-spirv.cpp
@@ -1115,19 +1115,21 @@ struct SPIRVEmitContext
 SlangResult emitSPIRVFromIR(
     BackEndCompileRequest*  compileRequest,
     IRModule*               irModule,
-    IRFunc*                 irEntryPoint,
+    const List<IRFunc*>&    irEntryPoints,
     List<uint8_t>&          spirvOut)
 {
     SLANG_UNUSED(compileRequest);
     SLANG_UNUSED(irModule);
-    SLANG_UNUSED(irEntryPoint);
 
     spirvOut.clear();
 
     SPIRVEmitContext context;
     context.m_irModule = irModule;
     context.emitFrontMatter();
-    context.ensureInst(irEntryPoint);
+    for (auto irEntryPoint : irEntryPoints)
+    {
+        context.ensureInst(irEntryPoint);
+    }
     context.emitPhysicalLayout();
 
     spirvOut.addRange(
-- 
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