From e2729b9a98306d6fc97ae0f9832a0a850d8f653a Mon Sep 17 00:00:00 2001
From: Reid Kleckner <reid@kleckner.net>
Date: Sat, 12 Jul 2014 00:18:58 +0000
Subject: Option: Propagate flags from groups to options in each group

This should make it easy to set a flag for a whole group of clang driver
options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212865 91177308-0d34-0410-b5e6-96231b3b80d8
---
 utils/TableGen/OptParserEmitter.cpp | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

(limited to 'utils')

diff --git a/utils/TableGen/OptParserEmitter.cpp b/utils/TableGen/OptParserEmitter.cpp
index c5fd7eecbfe..9262d7c8a02 100644
--- a/utils/TableGen/OptParserEmitter.cpp
+++ b/utils/TableGen/OptParserEmitter.cpp
@@ -221,9 +221,11 @@ void EmitOptParser(RecordKeeper &Records, raw_ostream &OS) {
 
     // The containing option group (if any).
     OS << ", ";
-    if (const DefInit *DI = dyn_cast<DefInit>(R.getValueInit("Group")))
+    const ListInit *GroupFlags = nullptr;
+    if (const DefInit *DI = dyn_cast<DefInit>(R.getValueInit("Group"))) {
+      GroupFlags = DI->getDef()->getValueAsListInit("Flags");
       OS << getOptionName(*DI->getDef());
-    else
+    } else
       OS << "INVALID";
 
     // The option alias (if any).
@@ -249,17 +251,19 @@ void EmitOptParser(RecordKeeper &Records, raw_ostream &OS) {
     }
 
     // The option flags.
+    OS << ", ";
+    int NumFlags = 0;
     const ListInit *LI = R.getValueAsListInit("Flags");
-    if (LI->empty()) {
-      OS << ", 0";
-    } else {
-      OS << ", ";
-      for (unsigned i = 0, e = LI->size(); i != e; ++i) {
-        if (i)
-          OS << " | ";
-        OS << cast<DefInit>(LI->getElement(i))->getDef()->getName();
-      }
+    for (Init *I : *LI)
+      OS << (NumFlags++ ? " | " : "")
+         << cast<DefInit>(I)->getDef()->getName();
+    if (GroupFlags) {
+      for (Init *I : *GroupFlags)
+        OS << (NumFlags++ ? " | " : "")
+           << cast<DefInit>(I)->getDef()->getName();
     }
+    if (NumFlags == 0)
+      OS << '0';
 
     // The option parameter field.
     OS << ", " << R.getValueAsInt("NumArgs");
-- 
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