[MC,AsmParser] Don't evaluate end() every iteration

In accordance with https://llvm.org/docs/CodingStandards.html
we shouldn't do this.

Author: chestnykh

llvm/lib/MC/MCParser/AsmParser.cpp

@@ -6116,8 +6116,8 @@ bool AsmParser::parseMSInlineAsm(
   const char *AsmStart = ASMString.begin();
   const char *AsmEnd = ASMString.end();
   array_pod_sort(AsmStrRewrites.begin(), AsmStrRewrites.end(), rewritesSort);
-  for (auto it = AsmStrRewrites.begin(); it != AsmStrRewrites.end(); ++it) {
-    const AsmRewrite &AR = *it;
+  for (auto I = AsmStrRewrites.begin(), E = AsmStrRewrites.end(); I != E; ++I) {
+    const AsmRewrite &AR = *I;
     // Check if this has already been covered by another rewrite...
     if (AR.Done)
       continue;
@@ -6160,7 +6160,7 @@ bool AsmParser::parseMSInlineAsm(
         SMLoc OffsetLoc = SMLoc::getFromPointer(AR.IntelExp.OffsetName.data());
         size_t OffsetLen = OffsetName.size();
         auto rewrite_it = std::find_if(
-            it, AsmStrRewrites.end(), [&](const AsmRewrite &FusingAR) {
+            I, AsmStrRewrites.end(), [&](const AsmRewrite &FusingAR) {
               return FusingAR.Loc == OffsetLoc && FusingAR.Len == OffsetLen &&
                      (FusingAR.Kind == AOK_Input ||
                       FusingAR.Kind == AOK_CallInput);

llvm/lib/MC/MCParser/MasmParser.cpp

@@ -7474,8 +7474,8 @@ bool MasmParser::parseMSInlineAsm(
   const char *AsmStart = ASMString.begin();
   const char *AsmEnd = ASMString.end();
   array_pod_sort(AsmStrRewrites.begin(), AsmStrRewrites.end(), rewritesSort);
-  for (auto it = AsmStrRewrites.begin(); it != AsmStrRewrites.end(); ++it) {
-    const AsmRewrite &AR = *it;
+  for (auto I = AsmStrRewrites.begin(), E = AsmStrRewrites.end(); I != E; ++I) {
+    const AsmRewrite &AR = *I;
     // Check if this has already been covered by another rewrite...
     if (AR.Done)
       continue;
@@ -7518,7 +7518,7 @@ bool MasmParser::parseMSInlineAsm(
         SMLoc OffsetLoc = SMLoc::getFromPointer(AR.IntelExp.OffsetName.data());
         size_t OffsetLen = OffsetName.size();
         auto rewrite_it = std::find_if(
-            it, AsmStrRewrites.end(), [&](const AsmRewrite &FusingAR) {
+            I, AsmStrRewrites.end(), [&](const AsmRewrite &FusingAR) {
               return FusingAR.Loc == OffsetLoc && FusingAR.Len == OffsetLen &&
                      (FusingAR.Kind == AOK_Input ||
                       FusingAR.Kind == AOK_CallInput);