From 706b4fc47bbc608932d3b491ae19a3b9cde9497b Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Fri, 17 Jan 2020 20:45:01 +0000
Subject: Vendor import of llvm-project master e26a78e70, the last commit
 before the llvmorg-11-init tag, from which release/10.x was branched.

---
 llvm/utils/TableGen/OptParserEmitter.cpp | 75 ++------------------------------
 1 file changed, 3 insertions(+), 72 deletions(-)

(limited to 'llvm/utils/TableGen/OptParserEmitter.cpp')

diff --git a/llvm/utils/TableGen/OptParserEmitter.cpp b/llvm/utils/TableGen/OptParserEmitter.cpp
index 51b1cb093b21..c1978ac7ac66 100644
--- a/llvm/utils/TableGen/OptParserEmitter.cpp
+++ b/llvm/utils/TableGen/OptParserEmitter.cpp
@@ -6,7 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/TableGen/Error.h"
+#include "OptEmitter.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/Twine.h"
@@ -18,75 +18,6 @@
 
 using namespace llvm;
 
-// Ordering on Info. The logic should match with the consumer-side function in
-// llvm/Option/OptTable.h.
-// FIXME: Mmake this take StringRefs instead of null terminated strings to
-// simplify callers.
-static int StrCmpOptionName(const char *A, const char *B) {
-  const char *X = A, *Y = B;
-  char a = tolower(*A), b = tolower(*B);
-  while (a == b) {
-    if (a == '\0')
-      return strcmp(A, B);
-
-    a = tolower(*++X);
-    b = tolower(*++Y);
-  }
-
-  if (a == '\0') // A is a prefix of B.
-    return 1;
-  if (b == '\0') // B is a prefix of A.
-    return -1;
-
-  // Otherwise lexicographic.
-  return (a < b) ? -1 : 1;
-}
-
-static int CompareOptionRecords(Record *const *Av, Record *const *Bv) {
-  const Record *A = *Av;
-  const Record *B = *Bv;
-
-  // Sentinel options precede all others and are only ordered by precedence.
-  bool ASent = A->getValueAsDef("Kind")->getValueAsBit("Sentinel");
-  bool BSent = B->getValueAsDef("Kind")->getValueAsBit("Sentinel");
-  if (ASent != BSent)
-    return ASent ? -1 : 1;
-
-  // Compare options by name, unless they are sentinels.
-  if (!ASent)
-    if (int Cmp = StrCmpOptionName(A->getValueAsString("Name").str().c_str(),
-                                   B->getValueAsString("Name").str().c_str()))
-      return Cmp;
-
-  if (!ASent) {
-    std::vector<StringRef> APrefixes = A->getValueAsListOfStrings("Prefixes");
-    std::vector<StringRef> BPrefixes = B->getValueAsListOfStrings("Prefixes");
-
-    for (std::vector<StringRef>::const_iterator APre = APrefixes.begin(),
-                                                AEPre = APrefixes.end(),
-                                                BPre = BPrefixes.begin(),
-                                                BEPre = BPrefixes.end();
-                                                APre != AEPre &&
-                                                BPre != BEPre;
-                                                ++APre, ++BPre) {
-      if (int Cmp = StrCmpOptionName(APre->str().c_str(), BPre->str().c_str()))
-        return Cmp;
-    }
-  }
-
-  // Then by the kind precedence;
-  int APrec = A->getValueAsDef("Kind")->getValueAsInt("Precedence");
-  int BPrec = B->getValueAsDef("Kind")->getValueAsInt("Precedence");
-  if (APrec == BPrec &&
-      A->getValueAsListOfStrings("Prefixes") ==
-      B->getValueAsListOfStrings("Prefixes")) {
-    PrintError(A->getLoc(), Twine("Option is equivalent to"));
-    PrintError(B->getLoc(), Twine("Other defined here"));
-    PrintFatalError("Equivalent Options found.");
-  }
-  return APrec < BPrec ? -1 : 1;
-}
-
 static const std::string getOptionName(const Record &R) {
   // Use the record name unless EnumName is defined.
   if (isa<UnsetInit>(R.getValueInit("EnumName")))
@@ -310,9 +241,9 @@ void EmitOptParser(RecordKeeper &Records, raw_ostream &OS) {
     OS << "bool ValuesWereAdded;\n";
     OS << R.getValueAsString("ValuesCode");
     OS << "\n";
-    for (const std::string &Pref : R.getValueAsListOfStrings("Prefixes")) {
+    for (std::string S : R.getValueAsListOfStrings("Prefixes")) {
       OS << "ValuesWereAdded = Opt.addValues(";
-      std::string S = (Pref + R.getValueAsString("Name")).str();
+      S += R.getValueAsString("Name");
       write_cstring(OS, S);
       OS << ", Values);\n";
       OS << "(void)ValuesWereAdded;\n";
-- 
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