[Options] Add prefixes to options.
Each option has a set of prefixes. When matching an argument such as
-funroll-loops. First the leading - is removed as it is a prefix. Then
a lower_bound search for "funroll-loops" is done against the option table by
option name. From there each option prefix + option name combination is tested
against the argument.
This allows us to support Microsoft style options where both / and - are valid
prefixes. It also simplifies the cases we already have where options come in
both - and -- forms. Almost every option for gnu-ld happens to have this form.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166444 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index 59cebf5..31492a7 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -608,7 +608,7 @@
it != ie; ++it, ++i) {
Arg *A = *it;
llvm::errs() << "Option " << i << " - "
- << "Name: \"" << A->getOption().getName() << "\", "
+ << "Name: \"" << A->getOption().getPrefixedName() << "\", "
<< "Values: {";
for (unsigned j = 0; j < A->getNumValues(); ++j) {
if (j)