[clang-format][NFC] Enable RemoveSemicolon for clang-format style (#82735)

Also insert separators for decimal integers longer than 4 digits.

Author: owenca

clang/lib/Format/Format.cpp

@@ -1591,7 +1591,7 @@ FormatStyle getLLVMStyle(FormatStyle::LanguageKind Language) {
   LLVMStyle.PenaltyBreakScopeResolution = 500;
   LLVMStyle.PenaltyBreakString = 1000;
   LLVMStyle.PenaltyBreakTemplateDeclaration = prec::Relational;
-  LLVMStyle.PenaltyExcessCharacter = 1000000;
+  LLVMStyle.PenaltyExcessCharacter = 1'000'000;
   LLVMStyle.PenaltyIndentedWhitespace = 0;
   LLVMStyle.PenaltyReturnTypeOnItsOwnLine = 60;
 
@@ -1914,9 +1914,12 @@ FormatStyle getClangFormatStyle() {
   FormatStyle Style = getLLVMStyle();
   Style.InsertBraces = true;
   Style.InsertNewlineAtEOF = true;
+  Style.IntegerLiteralSeparator.Decimal = 3;
+  Style.IntegerLiteralSeparator.DecimalMinDigits = 5;
   Style.LineEnding = FormatStyle::LE_LF;
   Style.RemoveBracesLLVM = true;
   Style.RemoveParentheses = FormatStyle::RPS_ReturnStatement;
+  Style.RemoveSemicolon = true;
   return Style;
 }
 

clang/lib/Format/FormatToken.cpp

@@ -137,7 +137,7 @@ unsigned CommaSeparatedList::formatAfterToken(LineState &State,
   // bin-packed. Add a severe penalty to this so that column layouts are
   // preferred if possible.
   if (!Format)
-    return 10000;
+    return 10'000;
 
   // Format the entire list.
   unsigned Penalty = 0;

clang/lib/Format/UnwrappedLineFormatter.cpp

@@ -1221,7 +1221,7 @@ class OptimizingLineFormatter : public LineFormatter {
     // While not empty, take first element and follow edges.
     while (!Queue.empty()) {
       // Quit if we still haven't found a solution by now.
-      if (Count > 25000000)
+      if (Count > 25'000'000)
         return 0;
 
       Penalty = Queue.top().first.first;
@@ -1235,7 +1235,7 @@ class OptimizingLineFormatter : public LineFormatter {
 
       // Cut off the analysis of certain solutions if the analysis gets too
       // complex. See description of IgnoreStackForComparison.
-      if (Count > 50000)
+      if (Count > 50'000)
         Node->State.IgnoreStackForComparison = true;
 
       if (!Seen.insert(&Node->State).second) {

clang/unittests/Format/FormatTest.cpp

@@ -21669,7 +21669,7 @@ TEST_F(FormatTest, BreakPenaltyAfterCastLParen) {
                "    int)aaaaaaaaaaaaaaaaaaaaaaaa);",
 
                Style);
-  Style.PenaltyBreakOpenParenthesis = 100000;
+  Style.PenaltyBreakOpenParenthesis = 100'000;
   verifyFormat("foo((int)\n"
                "        aaaaaaaaaaaaaaaaaaaaaaaa);",
                "foo((\n"