re PR target/47715 ([x32] TLS doesn't work)

	PR target/47715
	* config/i386/i386.md (*load_tp_x32): New.
	(*load_tp_x32_zext): Ditto.
	(*add_tp_x32): Ditto.
	(*add_tp_x32_zext): Ditto.
	(*load_tp_<mode>): Disable for TARGET_X32 targets.
	(*add_tp_<mode>): Ditto.
	* config/i386/i386.c (get_thread_pointer): Load thread pointer in
	ptr_mode and convert to Pmode if needed.

From-SVN: r176924

gcc/ChangeLog

+2011-07-29  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/47715
+	* config/i386/i386.md (*load_tp_x32): New.
+	(*load_tp_x32_zext): Ditto.
+	(*add_tp_x32): Ditto.
+	(*add_tp_x32_zext): Ditto.
+	(*load_tp_<mode>): Disable for TARGET_X32 targets.
+	(*add_tp_<mode>): Ditto.
+	* config/i386/i386.c (get_thread_pointer): Load thread pointer in
+	ptr_mode and convert to Pmode if needed.
+
 2011-07-29  Georg-Johann Lay  <avr@gjlay.de>
-	
+
 	PR target/49687
 	* config/avr/avr.md (mulsi3, *mulsi3, mulu<mode>si3,
 	muls<mode>si3, mulohisi3, mulhisi3, umulhisi3, usmulhisi3,
@@ -18,7 +30,7 @@
 	are not suitable.
 
 2011-07-29  Georg-Johann Lay  <avr@gjlay.de>
-	
+
 	PR target/49313
 	* config/avr/libgcc.S (__ffshi2): Don't skip 2-word instruction.
 	(__ctzsi2): Result for 0 may be undefined.

gcc/config/i386/i386.c

@@ -12118,17 +12118,15 @@ legitimize_pic_address (rtx orig, rtx reg)
 static rtx
 get_thread_pointer (bool to_reg)
 {
-  rtx tp, reg, insn;
+  rtx tp = gen_rtx_UNSPEC (ptr_mode, gen_rtvec (1, const0_rtx), UNSPEC_TP);
 
-  tp = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, const0_rtx), UNSPEC_TP);
-  if (!to_reg)
-    return tp;
+  if (GET_MODE (tp) != Pmode)
+    tp = convert_to_mode (Pmode, tp, 1);
 
-  reg = gen_reg_rtx (Pmode);
-  insn = gen_rtx_SET (VOIDmode, reg, tp);
-  insn = emit_insn (insn);
+  if (to_reg)
+    tp = copy_addr_to_reg (tp);
 
-  return reg;
+  return tp;
 }
 
 /* Construct the SYMBOL_REF for the tls_get_addr function.  */

gcc/config/i386/i386.md

@@ -12444,10 +12444,32 @@
 (define_mode_attr tp_seg [(SI "gs") (DI "fs")])
 
 ;; Load and add the thread base pointer from %<tp_seg>:0.
+(define_insn "*load_tp_x32"
+  [(set (match_operand:SI 0 "register_operand" "=r")
+	(unspec:SI [(const_int 0)] UNSPEC_TP))]
+  "TARGET_X32"
+  "mov{l}\t{%%fs:0, %0|%0, DWORD PTR fs:0}"
+  [(set_attr "type" "imov")
+   (set_attr "modrm" "0")
+   (set_attr "length" "7")
+   (set_attr "memory" "load")
+   (set_attr "imm_disp" "false")])
+
+(define_insn "*load_tp_x32_zext"
+  [(set (match_operand:DI 0 "register_operand" "=r")
+	(zero_extend:DI (unspec:SI [(const_int 0)] UNSPEC_TP)))]
+  "TARGET_X32"
+  "mov{l}\t{%%fs:0, %k0|%k0, DWORD PTR fs:0}"
+  [(set_attr "type" "imov")
+   (set_attr "modrm" "0")
+   (set_attr "length" "7")
+   (set_attr "memory" "load")
+   (set_attr "imm_disp" "false")])
+
 (define_insn "*load_tp_<mode>"
   [(set (match_operand:P 0 "register_operand" "=r")
 	(unspec:P [(const_int 0)] UNSPEC_TP))]
-  ""
+  "!TARGET_X32"
   "mov{<imodesuffix>}\t{%%<tp_seg>:0, %0|%0, <iptrsize> PTR <tp_seg>:0}"
   [(set_attr "type" "imov")
    (set_attr "modrm" "0")
@@ -12455,12 +12477,39 @@
    (set_attr "memory" "load")
    (set_attr "imm_disp" "false")])
 
+(define_insn "*add_tp_x32"
+  [(set (match_operand:SI 0 "register_operand" "=r")
+	(plus:SI (unspec:SI [(const_int 0)] UNSPEC_TP)
+		 (match_operand:SI 1 "register_operand" "0")))
+   (clobber (reg:CC FLAGS_REG))]
+  "TARGET_X32"
+  "add{l}\t{%%fs:0, %0|%0, DWORD PTR fs:0}"
+  [(set_attr "type" "alu")
+   (set_attr "modrm" "0")
+   (set_attr "length" "7")
+   (set_attr "memory" "load")
+   (set_attr "imm_disp" "false")])
+
+(define_insn "*add_tp_x32_zext"
+  [(set (match_operand:DI 0 "register_operand" "=r")
+	(zero_extend:DI
+	  (plus:SI (unspec:SI [(const_int 0)] UNSPEC_TP)
+		   (match_operand:SI 1 "register_operand" "0"))))
+   (clobber (reg:CC FLAGS_REG))]
+  "TARGET_X32"
+  "add{l}\t{%%fs:0, %k0|%k0, DWORD PTR fs:0}"
+  [(set_attr "type" "alu")
+   (set_attr "modrm" "0")
+   (set_attr "length" "7")
+   (set_attr "memory" "load")
+   (set_attr "imm_disp" "false")])
+
 (define_insn "*add_tp_<mode>"
   [(set (match_operand:P 0 "register_operand" "=r")
 	(plus:P (unspec:P [(const_int 0)] UNSPEC_TP)
 		(match_operand:P 1 "register_operand" "0")))
    (clobber (reg:CC FLAGS_REG))]
-  ""
+  "!TARGET_X32"
   "add{<imodesuffix>}\t{%%<tp_seg>:0, %0|%0, <iptrsize> PTR <tp_seg>:0}"
   [(set_attr "type" "alu")
    (set_attr "modrm" "0")

gcc/function.c

@@ -4570,9 +4570,14 @@ stack_protect_prologue (void)
   tree guard_decl = targetm.stack_protect_guard ();
   rtx x, y;
 
+  printf ("TESTx\n");
+
   x = expand_normal (crtl->stack_protect_guard);
   y = expand_normal (guard_decl);
 
+  debug_rtx (x);
+  debug_rtx (y);
+
   /* Allow the target to copy from Y to X without leaking Y into a
      register.  */
   if (HAVE_stack_protect_set)
@@ -4604,9 +4609,14 @@ stack_protect_epilogue (void)
   rtx label = gen_label_rtx ();
   rtx x, y, tmp;
 
+  printf ("TESTz\n");
+
   x = expand_normal (crtl->stack_protect_guard);
   y = expand_normal (guard_decl);
 
+  debug_rtx (x);
+  debug_rtx (y);
+
   /* Allow the target to compare Y with X without leaking either into
      a register.  */
   switch (HAVE_stack_protect_test != 0)