re PR target/34814 (SDmode function args not passed according to ABI specification)

	PR target/34814
	* doc/tm.texi (TARGET_EXPAND_TO_RTL_HOOK): Document.
	(TARGET_INSTANTIATE_DECLS): Likewise.
	* target.h (expand_to_rtl_hook): New target hook.
	(instantiate_decls): Likewise.
	* function.c (instantiate_decl): Make non-static.  Rename to...
	(instantiate_decl_rtl): ... this.
	(instantiate_expr): Use instantiate_decl_rtl.
	(instantiate_decls_1): Likewise.
	(instantiate_decls): Likewise.
	(instantiate_virtual_regs: Call new instantiate_decls taget hook.
	* function.h (instantiate_decl_rtl): Add prototype.
	* cfgexpand.c (target.h): New include.
	(tree_expand_cfg): Call new expand_to_rtl_hook target hook.
	* target-def.h (TARGET_EXPAND_TO_RTL_HOOK): New define.
	(TARGET_INSTANTIATE_DECLS): Likewise.
	(TARGET_INITIALIZER): New target hooks added.
	* config/rs6000/rs6000-protos.h (rs6000_secondary_memory_needed_rtx):
	New prototype.
	* config/rs6000/rs6000.c (tree-flow.h): New include.
	(machine_function): Add sdmode_stack_slot field.
	(rs6000_alloc_sdmode_stack_slot): New function.
	(rs6000_instantiate_decls): Likewise.
	(rs6000_secondary_memory_needed_rtx): Likewise.
	(rs6000_check_sdmode): Likewise.
	(TARGET_EXPAND_TO_RTL_HOOK): Target macro defined.
	(TARGET_INSTANTIATE_DECLS): Likewise.
	(rs6000_hard_regno_mode_ok): Allow SDmode.
	(num_insns_constant): Likewise.  Handle _Decimal32 constants.
	(rs6000_emit_move): Handle SDmode.
	(function_arg_advance): Likewise.
	(function_arg): Likewise.
	(rs6000_gimplify_va_arg): Likewise.  Add special handling of
	SDmode var args for 32-bit compiles.
	(rs6000_secondary_reload_class): Handle SDmode.
	(rs6000_output_function_epilogue): Likewise.
	(rs6000_function_value): Simplify if statement.
	(rs6000_libcall_value): Likewise.
	* config/rs6000/rs6000.h (SLOW_UNALIGNED_ACCESS): Handle SDmode.
	(SECONDARY_MEMORY_NEEDED_RTX): Add define.
	* config/rs6000/dfp.md (movsd): New define_expand and splitter.
	(movsd_hardfloat): New define_insn.
	(movsd_softfloat): Likewise.
	(movsd_store): Likewise.
	(movsd_load): Likewise.
	(extendsddd2): Likewise.
	(extendsdtd2): Likewise.
	(truncddsd2): Likewise.
	(movdd_hardfloat64): Fixup comment.
	(UNSPEC_MOVSD_LOAD): New constant.
	(UNSPEC_MOVSD_STORE): Likewise.

Co-Authored-By: Janis Johnson <janis187@us.ibm.com>

From-SVN: r131869

1 files changed, 10 insertions, 8 deletions

diff --git a/gcc/function.c b/gcc/function.c
index d89a040..401bb21 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -1568,8 +1568,8 @@ instantiate_virtual_regs_in_insn (rtx insn)
 /* Subroutine of instantiate_decls.  Given RTL representing a decl,
    do any instantiation required.  */
 
-static void
-instantiate_decl (rtx x)
+void
+instantiate_decl_rtl (rtx x)
 {
   rtx addr;
 
@@ -1579,8 +1579,8 @@ instantiate_decl (rtx x)
   /* If this is a CONCAT, recurse for the pieces.  */
   if (GET_CODE (x) == CONCAT)
     {
-      instantiate_decl (XEXP (x, 0));
-      instantiate_decl (XEXP (x, 1));
+      instantiate_decl_rtl (XEXP (x, 0));
+      instantiate_decl_rtl (XEXP (x, 1));
       return;
     }
 
@@ -1610,7 +1610,7 @@ instantiate_expr (tree *tp, int *walk_subtrees, void *data ATTRIBUTE_UNUSED)
     {
       *walk_subtrees = 0;
       if (DECL_P (t) && DECL_RTL_SET_P (t))
-	instantiate_decl (DECL_RTL (t));
+	instantiate_decl_rtl (DECL_RTL (t));
     }
   return NULL;
 }
@@ -1626,7 +1626,7 @@ instantiate_decls_1 (tree let)
   for (t = BLOCK_VARS (let); t; t = TREE_CHAIN (t))
     {
       if (DECL_RTL_SET_P (t))
-	instantiate_decl (DECL_RTL (t));
+	instantiate_decl_rtl (DECL_RTL (t));
       if (TREE_CODE (t) == VAR_DECL && DECL_HAS_VALUE_EXPR_P (t))
 	{
 	  tree v = DECL_VALUE_EXPR (t);
@@ -1650,8 +1650,8 @@ instantiate_decls (tree fndecl)
   /* Process all parameters of the function.  */
   for (decl = DECL_ARGUMENTS (fndecl); decl; decl = TREE_CHAIN (decl))
     {
-      instantiate_decl (DECL_RTL (decl));
-      instantiate_decl (DECL_INCOMING_RTL (decl));
+      instantiate_decl_rtl (DECL_RTL (decl));
+      instantiate_decl_rtl (DECL_INCOMING_RTL (decl));
       if (DECL_HAS_VALUE_EXPR_P (decl))
 	{
 	  tree v = DECL_VALUE_EXPR (decl);
@@ -1715,6 +1715,8 @@ instantiate_virtual_regs (void)
   /* Instantiate the virtual registers in the DECLs for debugging purposes.  */
   instantiate_decls (current_function_decl);
 
+  targetm.instantiate_decls ();
+
   /* Indicate that, from now on, assign_stack_local should use
      frame_pointer_rtx.  */
   virtuals_instantiated = 1;