builtins.c (expand_builtin_thread_pointer): New.

2012-10-11  Chung-Lin Tang  <cltang@codesourcery.com>

	* builtins.c (expand_builtin_thread_pointer): New.
	(expand_builtin_set_thread_pointer): New.
	(expand_builtin): Add BUILT_IN_THREAD_POINTER,
	BUILT_IN_SET_THREAD_POINTER expand cases.
	* builtins.def (BUILT_IN_THREAD_POINTER):
	New __builtin_thread_pointer builtin.
	(BUILT_IN_SET_THREAD_POINTER):
	New __builtin_set_thread_pointer builtin.
	* optabs.def (get_thread_pointer,set_thread_pointer):
	New standard names.
	* doc/md.texi (Standard Names): Document get_thread_pointer and
	set_thread_pointer patterns.
	* config/alpha/alpha.md (get_thread_pointerdi): Rename from load_tp.
	(set_thread_pointerdi): Rename from set_tp.
	* config/alpha/alpha.c (alpha_legitimize_address_1): Change
	gen_load_tp calls to gen_get_thread_pointerdi.
	(alpha_builtin): Remove ALPHA_BUILTIN_THREAD_POINTER,
	ALPHA_BUILTIN_SET_THREAD_POINTER.
	(code_for_builtin): Remove CODE_FOR_load_tp, CODE_FOR_set_tp.
	(alpha_init_builtins): Remove __builtin_thread_pointer,
	__builtin_set_thread_pointer machine-specific builtins.
	(alpha_expand_builtin_thread_pointer): Add hook function for
	TARGET_EXPAND_BUILTIN_THREAD_POINTER.
	(alpha_expand_builtin_set_thread_pointer): Add hook function for
	TARGET_EXPAND_BUILTIN_SET_THREAD_POINTER.
	(alpha_fold_builtin): Remove ALPHA_BUILTIN_THREAD_POINTER,
	ALPHA_BUILTIN_SET_THREAD_POINTER cases.
	* config/arm/arm.md (get_thread_pointersi): New pattern.
	* config/arm/arm-protos.h (arm_load_tp): Add extern declaration.
	* config/arm/arm.c (arm_load_tp): Remove static.
	(arm_builtins): Remove ARM_BUILTIN_THREAD_POINTER.
	(arm_init_tls_builtins): Remove function.
	(arm_init_builtins): Remove call to arm_init_tls_builtins().
	(arm_expand_builtin): Remove ARM_BUILTIN_THREAD_POINTER case.
	* config/mips/mips.md (get_thread_pointer<mode>): New pattern.
	* config/mips/mips-protos.h (mips_expand_thread_pointer):
	Add extern declaration.
	* config/mips/mips.c (mips_expand_thread_pointer):
	Renamed from mips_get_tp.
	(mips_get_tp): New stub calling mips_expand_thread_pointer.
	* config/s390/s390.c (s390_builtin,code_for_builtin_64,
	code_for_builtin_31,s390_init_builtins,s390_expand_builtin): Remove.
	* config/s390/s390.md (get_tp_64,get_tp_31,set_tp_64,set_tp_31):
	Remove.
	(get_thread_pointer<mode>,set_thread_pointer<mode>):
	New, adapted from removed patterns.
	* config/xtensa/xtensa.md (get_thread_pointersi):
	Renamed from load_tp.
	(set_thread_pointersi): Renamed from set_tp.
	* config/xtensa/xtensa.c (xtensa_legitimize_tls_address):
	Change gen_load_tp calls to gen_get_thread_pointersi.
	(xtensa_builtin): Remove XTENSA_BUILTIN_THREAD_POINTER and
	XTENSA_BUILTIN_SET_THREAD_POINTER.
	(xtensa_init_builtins): Remove __builtin_thread_pointer,
	__builtin_set_thread_pointer machine-specific builtins.
	(xtensa_fold_builtin): Remove XTENSA_BUILTIN_THREAD_POINTER,
	XTENSA_BUILTIN_SET_THREAD_POINTER cases.
	(xtensa_expand_builtin): Remove XTENSA_BUILTIN_THREAD_POINTER,
	XTENSA_BUILTIN_SET_THREAD_POINTER cases.

From-SVN: r192364

1 files changed, 46 insertions, 0 deletions

diff --git a/gcc/builtins.c b/gcc/builtins.c
index e6b10ea..fb8d83a 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -5744,6 +5744,45 @@ expand_builtin_sync_synchronize (void)
   expand_mem_thread_fence (MEMMODEL_SEQ_CST);
 }
 
+static rtx
+expand_builtin_thread_pointer (tree exp, rtx target)
+{
+  enum insn_code icode;
+  if (!validate_arglist (exp, VOID_TYPE))
+    return const0_rtx;
+  icode = direct_optab_handler (get_thread_pointer_optab, Pmode);
+  if (icode != CODE_FOR_nothing)
+    {
+      struct expand_operand op;
+      if (!REG_P (target) || GET_MODE (target) != Pmode)
+	target = gen_reg_rtx (Pmode);
+      create_output_operand (&op, target, Pmode);
+      expand_insn (icode, 1, &op);
+      return target;
+    }
+  error ("__builtin_thread_pointer is not supported on this target");
+  return const0_rtx;
+}
+
+static void
+expand_builtin_set_thread_pointer (tree exp)
+{
+  enum insn_code icode;
+  if (!validate_arglist (exp, POINTER_TYPE, VOID_TYPE))
+    return;
+  icode = direct_optab_handler (set_thread_pointer_optab, Pmode);
+  if (icode != CODE_FOR_nothing)
+    {
+      struct expand_operand op;
+      rtx val = expand_expr (CALL_EXPR_ARG (exp, 0), NULL_RTX,
+			     Pmode, EXPAND_NORMAL);      
+      create_fixed_operand (&op, val);
+      expand_insn (icode, 1, &op);
+      return;
+    }
+  error ("__builtin_set_thread_pointer is not supported on this target");
+}
+
 
 /* Expand an expression EXP that calls a built-in function,
    with result going to TARGET if that's convenient
@@ -6809,6 +6848,13 @@ expand_builtin (tree exp, rtx target, rtx subtarget, enum machine_mode mode,
 	maybe_emit_free_warning (exp);
       break;
 
+    case BUILT_IN_THREAD_POINTER:
+      return expand_builtin_thread_pointer (exp, target);
+
+    case BUILT_IN_SET_THREAD_POINTER:
+      expand_builtin_set_thread_pointer (exp);
+      return const0_rtx;
+
     default:	/* just do library call, if unknown builtin */
       break;
     }