[PATCH 01/13] Make TARGET_STATIC_CHAIN allow a function type

[Richard Henderson <rth at redhat dot com>]

As opposed to always being a decl.  This is a prerequisite
to allowing the static chain to be loaded for indirect calls.
---
 gcc/config/i386/i386.c     | 19 +++++++++++++------
 gcc/config/moxie/moxie.c   |  5 +----
 gcc/config/xtensa/xtensa.c |  2 +-
 gcc/doc/tm.texi            |  2 +-
 gcc/target.def             |  6 +++---
 gcc/targhooks.c            |  5 +----
 6 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 4c4a6eb..d39e91b 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -26845,13 +26845,10 @@ ix86_minimum_alignment (tree exp, enum machine_mode mode,
    This is a register, unless all free registers are used by arguments.  */
 
 static rtx
-ix86_static_chain (const_tree fndecl, bool incoming_p)
+ix86_static_chain (const_tree fndecl_or_type, bool incoming_p)
 {
   unsigned regno;
 
-  if (!DECL_STATIC_CHAIN (fndecl))
-    return NULL;
-
   if (TARGET_64BIT)
     {
       /* We always use R10 in 64-bit mode.  */
@@ -26859,13 +26856,23 @@ ix86_static_chain (const_tree fndecl, bool incoming_p)
     }
   else
     {
-      tree fntype;
+      const_tree fntype, fndecl;
       unsigned int ccvt;
 
       /* By default in 32-bit mode we use ECX to pass the static chain.  */
       regno = CX_REG;
 
-      fntype = TREE_TYPE (fndecl);
+      if (TREE_CODE (fndecl_or_type) == FUNCTION_DECL)
+	{
+          fntype = TREE_TYPE (fndecl_or_type);
+	  fndecl = fndecl_or_type;
+	}
+      else
+	{
+	  fntype = fndecl_or_type;
+	  fndecl = NULL;
+	}
+
       ccvt = ix86_get_callcvt (fntype);
       if ((ccvt & IX86_CALLCVT_FASTCALL) != 0)
 	{
diff --git a/gcc/config/moxie/moxie.c b/gcc/config/moxie/moxie.c
index 1e289068..2aa06fd 100644
--- a/gcc/config/moxie/moxie.c
+++ b/gcc/config/moxie/moxie.c
@@ -513,13 +513,10 @@ moxie_arg_partial_bytes (cumulative_args_t cum_v,
 /* Worker function for TARGET_STATIC_CHAIN.  */
 
 static rtx
-moxie_static_chain (const_tree fndecl, bool incoming_p)
+moxie_static_chain (const_tree ARG_UNUSED (fndecl_or_type), bool incoming_p)
 {
   rtx addr, mem;
 
-  if (!DECL_STATIC_CHAIN (fndecl))
-    return NULL;
-
   if (incoming_p)
     addr = plus_constant (Pmode, arg_pointer_rtx, 2 * UNITS_PER_WORD);
   else
diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
index dc0629a..6c5d4fb 100644
--- a/gcc/config/xtensa/xtensa.c
+++ b/gcc/config/xtensa/xtensa.c
@@ -3603,7 +3603,7 @@ xtensa_function_value_regno_p (const unsigned int regno)
    expressions that denote where they are stored.  */
 
 static rtx
-xtensa_static_chain (const_tree ARG_UNUSED (fndecl), bool incoming_p)
+xtensa_static_chain (const_tree ARG_UNUSED (fndecl_or_type), bool incoming_p)
 {
   rtx base = incoming_p ? arg_pointer_rtx : stack_pointer_rtx;
   return gen_frame_mem (Pmode, plus_constant (Pmode, base,
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 10af50e..557d6b5 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -3462,7 +3462,7 @@ If the static chain is passed in memory, these macros should not be
 defined; instead, the @code{TARGET_STATIC_CHAIN} hook should be used.
 @end defmac
 
-@deftypefn {Target Hook} rtx TARGET_STATIC_CHAIN (const_tree @var{fndecl}, bool @var{incoming_p})
+@deftypefn {Target Hook} rtx TARGET_STATIC_CHAIN (const_tree @var{fndecl_or_type}, bool @var{incoming_p})
 This hook replaces the use of @code{STATIC_CHAIN_REGNUM} et al for
 targets that may use different static chain locations for different
 nested functions.  This may be required if the target has function
diff --git a/gcc/target.def b/gcc/target.def
index ce11eae..b966a72 100644
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -4147,8 +4147,8 @@ false for naked functions.  The default implementation always returns true.",
  bool, (void),
  hook_bool_void_true)
 
-/* Return an rtx for the static chain for FNDECL.  If INCOMING_P is true,
-       then it should be for the callee; otherwise for the caller.  */
+/* Return an rtx for the static chain for FNDECL_OR_TYPE.  If INCOMING_P
+   is true, then it should be for the callee; otherwise for the caller.  */
 DEFHOOK
 (static_chain,
  "This hook replaces the use of @code{STATIC_CHAIN_REGNUM} et al for\n\
@@ -4170,7 +4170,7 @@ will be at an offset from the frame pointer.\n\
 The variables @code{stack_pointer_rtx}, @code{frame_pointer_rtx}, and\n\
 @code{arg_pointer_rtx} will have been initialized and should be used\n\
 to refer to those items.",
- rtx, (const_tree fndecl, bool incoming_p),
+ rtx, (const_tree fndecl_or_type, bool incoming_p),
  default_static_chain)
 
 /* Fill in the trampoline at MEM with a call to FNDECL and a
diff --git a/gcc/targhooks.c b/gcc/targhooks.c
index 9f15559..99ea5ad 100644
--- a/gcc/targhooks.c
+++ b/gcc/targhooks.c
@@ -837,11 +837,8 @@ default_internal_arg_pointer (void)
 }
 
 rtx
-default_static_chain (const_tree fndecl, bool incoming_p)
+default_static_chain (const_tree ARG_UNUSED (fndecl_or_type), bool incoming_p)
 {
-  if (!DECL_STATIC_CHAIN (fndecl))
-    return NULL;
-
   if (incoming_p)
     {
 #ifdef STATIC_CHAIN_INCOMING_REGNUM
-- 
1.9.3