d: Merge upstream dmd 60bfa0ee7, druntime 94bd5bcb, phobos 3a1cd9a01.

D front-end changes:

    - Import dmd v2.100.0.
    - Add bit fields to D, enabled via the -fpreview=bitfields switch.
    - Removed the -ftransition=markdown and -frevert=markdown switches.
    - Added new trait `__traits(classInstanceAlignment)' to provide the
      required data alignment for classes.
    - The check for `pragma(crt_constructor)' and `pragma(crt_destructor)'
      linkage has been relaxed to allow all `void()' signatures.
    - ImportC parser now recognizes the `typeof(...)' operator.

D runtime changes:

    - Import druntime v2.100.0.

Phobos changes:

    - Import phobos v2.100.0.
    - To comply with dip1000, `std.socket.Socket` methods now accept only
      `scope' arrays.
    - The `fill', `alignSize', `align2', and `align4' methods of
      `std.outbuffer.OutBuffer' have been extended to allow specifying a custom
      value when pre-filling or padding the buffer.

gcc/d/ChangeLog:

	* dmd/MERGE: Merge upstream dmd 60bfa0ee7.
	* dmd/VERSION: Update version to v2.100.0.
	* d-builtins.cc (d_init_versions): Update for new front-end interface.
	* d-codegen.cc (d_decl_context): Use resolvedLinkage to get
	declaration linkage.
	(build_struct_literal): Track offset in bits.
	* d-gimplify.cc (d_gimplify_modify_expr): Check both operands for a
	bit-field reference.
	* d-lang.cc (d_handle_option): Handle -fpreview=bitfields, remove
	-frevert=markdown and -ftransition=vmarkdown.
	(d_post_options): Set flag_rtti and flag_exceptions if -fno-druntime
	was seen on command-line.
	(d_parse_file): Update for new front-end interface.
	(d_type_promotes_to): Use resolvedLinkage to get declaration linkage.
	* decl.cc (make_thunk): Likewise.
	* expr.cc (ExprVisitor::visit (CatAssignExp *)): Remove lowering for
	appending of an element or array to another array.
	* lang.opt (fpreview=bitfields): New option.
	(frevert=markdown): Remove.
	(ftransition=vmarkdown): Remove.
	* types.cc (layout_aggregate_members): Ignore anonymous fields in
	total count.

libphobos/ChangeLog:

	* libdruntime/MERGE: Merge upstream druntime 94bd5bcb.
	* libdruntime/Makefile.am (ALL_DRUNTIME_INSTALL_DSOURCES): Add
	$(DRUNTIME_DSOURCES_ELF).
	(ALL_DRUNTIME_SOURCES): Likewise.
	(DRUNTIME_DSOURCES_ELF): New variable.
	* libdruntime/Makefile.in: Regenerate.
	* src/MERGE: Merge upstream phobos 3a1cd9a01.
	* testsuite/libphobos.init_fini/custom_gc.d: Update test.

1 files changed, 7 insertions, 10 deletions

diff --git a/gcc/d/d-codegen.cc b/gcc/d/d-codegen.cc
index bb96b2f..22090a8 100644
--- a/gcc/d/d-codegen.cc
+++ b/gcc/d/d-codegen.cc
@@ -76,7 +76,7 @@ d_decl_context (Dsymbol *dsym)
 	 but only for extern(D) symbols.  */
       if (parent->isModule ())
 	{
-	  if ((decl != NULL && decl->linkage != LINK::d)
+	  if ((decl != NULL && decl->resolvedLinkage () != LINK::d)
 	      || (ad != NULL && ad->classKind != ClassKind::d))
 	    return NULL_TREE;
 
@@ -1165,7 +1165,7 @@ build_struct_literal (tree type, vec <constructor_elt, va_gc> *init)
     }
 
   vec <constructor_elt, va_gc> *ve = NULL;
-  HOST_WIDE_INT offset = 0;
+  HOST_WIDE_INT bitoffset = 0;
   bool constant_p = true;
   bool finished = false;
 
@@ -1210,11 +1210,11 @@ build_struct_literal (tree type, vec <constructor_elt, va_gc> *init)
 
       if (is_initialized)
 	{
-	  HOST_WIDE_INT fieldpos = int_byte_position (field);
+	  HOST_WIDE_INT fieldpos = int_bit_position (field);
 	  gcc_assert (value != NULL_TREE);
 
 	  /* Must not initialize fields that overlap.  */
-	  if (fieldpos < offset)
+	  if (fieldpos < bitoffset)
 	    {
 	      /* Find the nearest user defined type and field.  */
 	      tree vtype = type;
@@ -1243,12 +1243,9 @@ build_struct_literal (tree type, vec <constructor_elt, va_gc> *init)
 	    finished = true;
 	}
 
-      /* Move offset to the next position in the struct.  */
-      if (TREE_CODE (type) == RECORD_TYPE)
-	{
-	  offset = int_byte_position (field)
-	    + int_size_in_bytes (TREE_TYPE (field));
-	}
+      /* Move bit offset to the next position in the struct.  */
+      if (TREE_CODE (type) == RECORD_TYPE && DECL_SIZE (field))
+	bitoffset = int_bit_position (field) + tree_to_shwi (DECL_SIZE (field));
 
       /* If all initializers have been assigned, there's nothing else to do.  */
       if (vec_safe_is_empty (init))