re PR target/15551 (-mtune=pentium4 -O2 with sjlj EH breaks stack probe worker…

re PR target/15551 (-mtune=pentium4  -O2 with sjlj EH breaks stack probe worker on windows32  targets)


2004-06-21  Kelley Cook  <kcook@gcc.gnu.org>

	PR target/15551
	* config/i386/i386.md: Change UNSPEC_STACK_PROBE to UNSPECV_STACK_PROBE.
	(allocate_stack_worker): Make unspec_volatile.
	(allocate_stack_worker_rex64):  Likewise.
	(allocate_stack_worker_postreload):  Likewise.
	(allocate_stack_worker_rex64_postreload):  Likewise.

From-SVN: r83458

gcc/ChangeLog

+2004-06-21  Kelley Cook  <kcook@gcc.gnu.org>
+
+	PR target/15551
+	* config/i386/i386.md: Change UNSPEC_STACK_PROBE to UNSPECV_STACK_PROBE.
+	(allocate_stack_worker): Make unspec_volatile.
+	(allocate_stack_worker_rex64):  Likewise.
+	(allocate_stack_worker_postreload):  Likewise.
+	(allocate_stack_worker_rex64_postreload):  Likewise.
+
 2004-06-21  Daniel Berlin  <dberlin@dberlin.org>
     
 	Fix PR optimization/15982

gcc/config/i386/i386.md

+
 ;; GCC machine description for IA-32 and x86-64.
 ;; Copyright (C) 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
 ;; 2001, 2002, 2003, 2004
@@ -63,7 +64,6 @@
    (UNSPEC_INDNTPOFF		8)
 
    ; Prologue support
-   (UNSPEC_STACK_PROBE		10)
    (UNSPEC_STACK_ALLOC		11)
    (UNSPEC_SET_GOT		12)
    (UNSPEC_SSE_PROLOGUE_SAVE	13)
@@ -143,6 +143,7 @@
 
 (define_constants
   [(UNSPECV_BLOCKAGE		0)
+   (UNSPECV_STACK_PROBE		10)
    (UNSPECV_EMMS		31)
    (UNSPECV_LDMXCSR		37)
    (UNSPECV_STMXCSR		40)
@@ -18310,7 +18311,8 @@
 })
 
 (define_insn "allocate_stack_worker_1"
-  [(unspec:SI [(match_operand:SI 0 "register_operand" "a")] UNSPEC_STACK_PROBE)
+  [(unspec_volatile:SI [(match_operand:SI 0 "register_operand" "a")]
+    UNSPECV_STACK_PROBE)
    (set (reg:SI SP_REG) (minus:SI (reg:SI SP_REG) (match_dup 0)))
    (clobber (match_scratch:SI 1 "=0"))
    (clobber (reg:CC FLAGS_REG))]
@@ -18320,8 +18322,8 @@
    (set_attr "length" "5")])
 
 (define_expand "allocate_stack_worker_postreload"
-  [(parallel [(unspec:SI [(match_operand:SI 0 "register_operand" "a")]
-			   UNSPEC_STACK_PROBE)
+  [(parallel [(unspec_volatile:SI [(match_operand:SI 0 "register_operand" "a")]
+				    UNSPECV_STACK_PROBE)
 	      (set (reg:SI SP_REG) (minus:SI (reg:SI SP_REG) (match_dup 0)))
 	      (clobber (match_dup 0))
 	      (clobber (reg:CC FLAGS_REG))])]
@@ -18329,7 +18331,8 @@
   "")
 
 (define_insn "allocate_stack_worker_rex64"
-  [(unspec:DI [(match_operand:DI 0 "register_operand" "a")] UNSPEC_STACK_PROBE)
+  [(unspec_volatile:DI [(match_operand:DI 0 "register_operand" "a")]
+    UNSPECV_STACK_PROBE)
    (set (reg:DI SP_REG) (minus:DI (reg:DI SP_REG) (match_dup 0)))
    (clobber (match_scratch:DI 1 "=0"))
    (clobber (reg:CC FLAGS_REG))]
@@ -18339,8 +18342,8 @@
    (set_attr "length" "5")])
 
 (define_expand "allocate_stack_worker_rex64_postreload"
-  [(parallel [(unspec:DI [(match_operand:DI 0 "register_operand" "a")]
-			   UNSPEC_STACK_PROBE)
+  [(parallel [(unspec_volatile:DI [(match_operand:DI 0 "register_operand" "a")]
+				    UNSPECV_STACK_PROBE)
 	      (set (reg:DI SP_REG) (minus:DI (reg:DI SP_REG) (match_dup 0)))
 	      (clobber (match_dup 0))
 	      (clobber (reg:CC FLAGS_REG))])]