d: Consistently format quotations in comments.

gcc/d/ChangeLog:

	* d-builtins.cc: Update quotation formatting of comments.
	* d-codegen.cc: Likewise.
	* d-lang.cc: Likewise.
	* decl.cc: Likewise.
	* expr.cc: Likewise.
	* imports.cc: Likewise.
	* runtime.cc: Likewise.
	* toir.cc: Likewise.
	* typeinfo.cc: Likewise.
	* types.cc: Likewise.

1 files changed, 4 insertions, 4 deletions

diff --git a/gcc/d/expr.cc b/gcc/d/expr.cc
index bf9bb45..e1842cc 100644
--- a/gcc/d/expr.cc
+++ b/gcc/d/expr.cc
@@ -1739,7 +1739,7 @@ public:
 		    thisexp = TREE_OPERAND (thisexp, 1);
 		  }
 
-		/* Want reference to 'this' object.  */
+		/* Want reference to `this' object.  */
 		if (!POINTER_TYPE_P (TREE_TYPE (thisexp)))
 		  thisexp = build_address (thisexp);
 
@@ -1770,7 +1770,7 @@ public:
 	  {
 	    /* This gets the true function type, getting the function type
 	       from e1->type can sometimes be incorrect, such as when calling
-	       a 'ref' return function.  */
+	       a `ref' return function.  */
 	    tf = get_function_type (e1b->isDotVarExp ()->var->type);
 	  }
 	else
@@ -1794,7 +1794,7 @@ public:
 
 	if (fd->isNested ())
 	  {
-	    /* Maybe re-evaluate symbol storage treating 'fd' as public.  */
+	    /* Maybe re-evaluate symbol storage treating `fd' as public.  */
 	    if (call_by_alias_p (d_function_chain->function, fd))
 	      TREE_PUBLIC (callee) = 1;
 
@@ -2099,7 +2099,7 @@ public:
   {
     Type *ftype = e->type->toBasetype ();
 
-    /* This check is for lambda's, remove 'vthis' as function isn't nested.  */
+    /* This check is for lambda's, remove `vthis' as function isn't nested.  */
     if (e->fd->tok == TOKreserved && ftype->ty == Tpointer)
       {
 	e->fd->tok = TOKfunction;