Make getLastArgNoClaim work for up to 4 arguments.

Summary:
This is needed for http://reviews.llvm.org/D8507
I have no idea what stand-alone tests could be done, if needed.

Reviewers: Bigcheese, craig.topper, samsonov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8508

llvm-svn: 232859

1 files changed, 20 insertions, 0 deletions

diff --git a/llvm/lib/Option/ArgList.cpp b/llvm/lib/Option/ArgList.cpp
index f2547d68842..4bc8f925e1b 100644
--- a/llvm/lib/Option/ArgList.cpp
+++ b/llvm/lib/Option/ArgList.cpp
@@ -63,6 +63,26 @@ Arg *ArgList::getLastArgNoClaim(OptSpecifier Id0, OptSpecifier Id1) const {
   return nullptr;
 }
 
+Arg *ArgList::getLastArgNoClaim(OptSpecifier Id0, OptSpecifier Id1,
+                                OptSpecifier Id2) const {
+  // FIXME: Make search efficient?
+  for (const_reverse_iterator it = rbegin(), ie = rend(); it != ie; ++it)
+    if ((*it)->getOption().matches(Id0) || (*it)->getOption().matches(Id1) ||
+        (*it)->getOption().matches(Id2))
+      return *it;
+  return nullptr;
+}
+
+Arg *ArgList::getLastArgNoClaim(OptSpecifier Id0, OptSpecifier Id1,
+                                OptSpecifier Id2, OptSpecifier Id3) const {
+  // FIXME: Make search efficient?
+  for (const_reverse_iterator it = rbegin(), ie = rend(); it != ie; ++it)
+    if ((*it)->getOption().matches(Id0) || (*it)->getOption().matches(Id1) ||
+        (*it)->getOption().matches(Id2) || (*it)->getOption().matches(Id3))
+      return *it;
+  return nullptr;
+}
+
 Arg *ArgList::getLastArg(OptSpecifier Id) const {
   Arg *Res = nullptr;
   for (const_iterator it = begin(), ie = end(); it != ie; ++it) {