From 6b3e14b0a49b60f710b28660ef98ee7a3659a231 Mon Sep 17 00:00:00 2001
From: Matt Pharr <matt.pharr@intel.com>
Date: Mon, 6 Feb 2012 15:33:57 -0800
Subject: [PATCH] Add command-line option to enable debugging output from
 parser.

---
 main.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/main.cpp b/main.cpp
index c2ffe49d..6168f1c2 100644
--- a/main.cpp
+++ b/main.cpp
@@ -149,6 +149,7 @@ devUsage(int ret) {
     printf("        disable-handle-pseudo-memory-ops\n");
     printf("        disable-uniform-control-flow\t\tDisable uniform control flow optimizations\n");
     printf("        disable-uniform-memory-optimizations\tDisable uniform-based coherent memory access\n");
+    printf("    [--yydebug]\t\t\tPrint debugging information during parsing\n");
     exit(ret);
 }
 
@@ -404,6 +405,10 @@ int main(int Argc, char *Argv[]) {
 #endif // !ISPC_IS_WINDOWS
         else if (!strcmp(argv[i], "--quiet"))
             g->quiet = true;
+        else if (!strcmp(argv[i], "--yydebug")) {
+            extern int yydebug;
+            yydebug = 1;
+        }
         else if (!strcmp(argv[i], "-v") || !strcmp(argv[i], "--version")) {
             lPrintVersion();
             return 0;