From ef686dc38d309e8491c75f6fb32706550100ff59 Mon Sep 17 00:00:00 2001
From: Sanjiv Gupta <sanjiv.gupta@microchip.com>
Date: Fri, 26 Feb 2010 18:32:18 +0000
Subject: [PATCH] The cloner has nothing to do if any of the main or ISR
 entrypoints are not present in the module.

llvm-svn: 97232
---
 llvm/lib/Target/PIC16/PIC16Passes/PIC16Cloner.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/llvm/lib/Target/PIC16/PIC16Passes/PIC16Cloner.cpp b/llvm/lib/Target/PIC16/PIC16Passes/PIC16Cloner.cpp
index 01dbdca3b8ff..865da35de3c5 100644
--- a/llvm/lib/Target/PIC16/PIC16Passes/PIC16Cloner.cpp
+++ b/llvm/lib/Target/PIC16/PIC16Passes/PIC16Cloner.cpp
@@ -89,6 +89,9 @@ bool PIC16Cloner::runOnModule(Module &M) {
      if (mainCGN && isrCGN)
        break;
    }
+
+   // We have nothing to do if any of the main or ISR is missing.
+   if (! mainCGN || ! isrCGN) return false;
        
    // Time for some diagnostics.
    // See if the main itself is interrupt function then report an error.