Recognize when a function is marked pragma(inline).

Author: ibuclaw

gcc/d/ChangeLog

@@ -1,3 +1,7 @@
+2017-12-22  Iain Buclaw  <ibuclaw@gdcproject.org>
+
+	* decls.cc (get_symbol_decl): Handle pragma(inline) attributes.
+
 2017-12-19  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	* d-codegen.cc (build_target_expr): Update signature.

gcc/d/decl.cc

@@ -1120,22 +1120,24 @@ get_symbol_decl (Declaration *decl)
 	  d_keep (newfntype);
 	}
 
-      /* Miscellaneous function flags.  */
-      if (fd->isMember2 () || fd->isFuncLiteralDeclaration ())
+      /* In [pragma/inline], The attribute pragma(inline) affects whether a
+	 function should be inlined or not.  */
+      if (fd->inlining == PINLINEnever)
+	DECL_UNINLINABLE (decl->csym) = 1;
+      else if (fd->inlining == PINLINEalways)
+	{
+	  DECL_DECLARED_INLINE_P (decl->csym) = 1;
+	  DECL_DISREGARD_INLINE_LIMITS (decl->csym) = 1;
+	  DECL_COMDAT (decl->csym) = 1;
+	}
+      else if (fd->isMember2 () || fd->isFuncLiteralDeclaration ())
 	{
 	  /* See grokmethod in cp/decl.c.  Maybe we shouldn't be setting inline
 	     flags without reason or proper handling.  */
 	  DECL_DECLARED_INLINE_P (decl->csym) = 1;
 	  DECL_NO_INLINE_WARNING_P (decl->csym) = 1;
 	}
 
-      /* Function was declared 'naked'.  */
-      if (fd->naked)
-	{
-	  DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (decl->csym) = 1;
-	  DECL_UNINLINABLE (decl->csym) = 1;
-	}
-
       /* Vector array operations are always compiler generated.  */
       if (fd->isArrayOp)
 	{
@@ -1219,12 +1221,6 @@ get_symbol_decl (Declaration *decl)
 	    DECL_EXTERNAL (decl->csym) = 1;
 
 	  d_comdat_linkage (decl->csym);
-
-	  /* Normally the backend only emits COMDAT things when they are needed.
-	     If this decl is meant to be externally visible, then make sure that
-	     to mark it so that it is indeed needed.  */
-	  if (TREE_PUBLIC (decl->csym))
-	    mark_needed (decl->csym);
 	}
       else
 	{
@@ -1234,6 +1230,20 @@ get_symbol_decl (Declaration *decl)
 	  else
 	    DECL_EXTERNAL (decl->csym) = 1;
 	}
+
+      /* Normally the backend only emits COMDAT things when they are needed.
+	 If this decl is meant to be externally visible, then make sure that
+	 to mark it so that it is indeed needed.  */
+      if (TREE_PUBLIC (decl->csym) && (fd != NULL || ti != NULL))
+	{
+	  /* Don't keep functions declared pragma(inline, true) unless
+	     the user wants us to keep all inline functions.  */
+	  if (fd && fd->inlining == PINLINEalways
+	      && !flag_keep_inline_functions)
+	    DECL_COMDAT (decl->csym) = 1;
+	  else if (ti)
+	    mark_needed (decl->csym);
+	}
     }
 
   /* Symbol is going in thread local storage.  */