[Parse] Remove redundant check

hamishknight · hamishknight · commit 1a86c1e0e369 · 2022-04-29T10:53:56.000+01:00
We already check this in `Parser::tryLexRegexLiteral`,
and the failure case doesn't make sense here as
we call `discardToken` afterwards.
diff --git a/lib/Parse/Lexer.cpp b/lib/Parse/Lexer.cpp
@@ -2081,9 +2081,6 @@ bool Lexer::tryLexRegexLiteral(const char *TokStart) {
 }
 
 void Lexer::tryLexForwardSlashRegexLiteralFrom(State S, bool mustBeRegex) {
-  if (!LangOpts.EnableBareSlashRegexLiterals)
-    return;
-
   // Try re-lex with forward slash enabled.
   llvm::SaveAndRestore<LexerForwardSlashRegexMode> RegexLexingScope(
       ForwardSlashRegexMode, mustBeRegex

Original file line number	Diff line number	Diff line change
`@@ -2081,9 +2081,6 @@ bool Lexer::tryLexRegexLiteral(const char *TokStart) {`
`2081`	`2081`	`}`
`2082`	`2082`
`2083`	`2083`	`void Lexer::tryLexForwardSlashRegexLiteralFrom(State S, bool mustBeRegex) {`
`2084`		`- if (!LangOpts.EnableBareSlashRegexLiterals)`
`2085`		`- return;`
`2086`		`-`
`2087`	`2084`	`// Try re-lex with forward slash enabled.`
`2088`	`2085`	`llvm::SaveAndRestore<LexerForwardSlashRegexMode> RegexLexingScope(`
`2089`	`2086`	`ForwardSlashRegexMode, mustBeRegex`