Option parsing: support case-insensitive option matching.
Re-submitting r189416 with fix for Windows build on where strcasecmp is not defined.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189501 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/OptParserEmitter.cpp b/utils/TableGen/OptParserEmitter.cpp
index 86328bf..7fb7d65 100644
--- a/utils/TableGen/OptParserEmitter.cpp
+++ b/utils/TableGen/OptParserEmitter.cpp
@@ -13,18 +13,23 @@
#include "llvm/ADT/Twine.h"
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/TableGenBackend.h"
+#include <cstring>
+#include <cctype>
#include <map>
using namespace llvm;
+// Ordering on Info. The logic should match with the consumer-side function in
+// llvm/Option/OptTable.h.
static int StrCmpOptionName(const char *A, const char *B) {
- char a = *A, b = *B;
+ const char *X = A, *Y = B;
+ char a = tolower(*A), b = tolower(*B);
while (a == b) {
if (a == '\0')
- return 0;
+ return strcmp(A, B);
- a = *++A;
- b = *++B;
+ a = tolower(*++X);
+ b = tolower(*++Y);
}
if (a == '\0') // A is a prefix of B.
@@ -50,7 +55,7 @@
if (!ASent)
if (int Cmp = StrCmpOptionName(A->getValueAsString("Name").c_str(),
B->getValueAsString("Name").c_str()))
- return Cmp;
+ return Cmp;
if (!ASent) {
std::vector<std::string> APrefixes = A->getValueAsListOfStrings("Prefixes");