[multiple changes]

2012-05-14  Andrew Pinski  <apinski@cavium.com>
	    H.J. Lu  <hongjiu.lu@intel.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR target/53315
	* config/i386/i386.md (xbegin_1): Use + in constraint and
	match_dup.
	(xbegin): Updated.

2012-05-14  Andi Kleen <ak@linux.intel.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR target/53315
	* gcc.target/i386/i386.exp (check_effective_target_rtm): New.
	* gcc.target/i386/rtm-check.h: New file.
	* gcc.target/i386/pr53315.c: New test.

From-SVN: r187477

gcc/ChangeLog

@@ -1,3 +1,12 @@
+2012-05-14  Andrew Pinski  <apinski@cavium.com>
+	    H.J. Lu  <hongjiu.lu@intel.com>
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/53315
+	* config/i386/i386.md (xbegin_1): Use + in constraint and
+	match_dup.
+	(xbegin): Updated.
+
 2012-05-14  Jakub Jelinek  <jakub@redhat.com>
 
 	* dwarf2out.c (dwarf2out_define, dwarf2out_undef): Treat

gcc/config/i386/i386.md

@@ -18436,11 +18436,13 @@
 
   operands[1] = force_reg (SImode, constm1_rtx);
 
-  emit_jump_insn (gen_xbegin_1 (operands[0], operands[1], label));
+  emit_jump_insn (gen_xbegin_1 (operands[1], label));
 
   emit_label (label);
   LABEL_NUSES (label) = 1;
 
+  emit_move_insn (operands[0], operands[1]);
+
   DONE;
 })
 
@@ -18448,13 +18450,12 @@
   [(set (pc)
 	(if_then_else (ne (unspec [(const_int 0)] UNSPEC_XBEGIN_ABORT)
 			  (const_int 0))
-		      (label_ref (match_operand 2))
+		      (label_ref (match_operand 1))
 		      (pc)))
-   (set (match_operand:SI 0 "register_operand" "=a")
-	(unspec_volatile:SI [(match_operand:SI 1 "register_operand" "0")]
-			    UNSPECV_XBEGIN))]
+   (set (match_operand:SI 0 "register_operand" "+a")
+	(unspec_volatile:SI [(match_dup 0)] UNSPECV_XBEGIN))]
   "TARGET_RTM"
-  "xbegin\t%l2"
+  "xbegin\t%l1"
   [(set_attr "type" "other")
    (set_attr "length" "6")])
 

gcc/testsuite/ChangeLog

@@ -1,3 +1,11 @@
+2012-05-14  Andi Kleen <ak@linux.intel.com>
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/53315
+	* gcc.target/i386/i386.exp (check_effective_target_rtm): New.
+	* gcc.target/i386/rtm-check.h: New file.
+	* gcc.target/i386/pr53315.c: New test.
+
 2012-05-14  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/49110

gcc/testsuite/gcc.target/i386/i386.exp

@@ -1,4 +1,4 @@
-# Copyright (C) 1997, 2004, 2007, 2008, 2009, 2010
+# Copyright (C) 1997, 2004, 2007, 2008, 2009, 2010, 2011, 2012
 # Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
@@ -243,6 +243,17 @@ proc check_effective_target_bmi2 { } {
     } "-mbmi2" ]
 }
 
+# Return 1 if rtm instructions can be compiled.
+proc check_effective_target_rtm { } {
+    return [check_no_compiler_messages rtm object {
+	void
+	_rtm_xend (void)
+	{
+	    return __builtin_ia32_xend ();
+	}
+    } "-mrtm" ]
+}
+
 # If the linker used understands -M <mapfile>, pass it to clear hardware
 # capabilities set by the Sun assembler.
 set clearcap_ldflags "-Wl,-M,$srcdir/$subdir/clearcap.map"

gcc/testsuite/gcc.target/i386/pr53315.c

@@ -0,0 +1,27 @@
+/* PR target/53315 and PR target/53291 */
+/* { dg-do run } */
+/* { dg-options "-O2 -mrtm" } */
+/* { dg-require-effective-target rtm } */
+
+#include <x86intrin.h>
+#include "rtm-check.h"
+
+static void
+rtm_test (void)
+{
+  int flag = -1;
+  unsigned status;
+
+  if ((status = _xbegin ()) == _XBEGIN_STARTED)
+    {
+      flag = _xtest ();
+      _xend ();
+    }
+  else
+    return;
+
+  if (flag != 1)
+    abort ();
+  if (_xtest () != 0)
+    abort ();
+}

gcc/testsuite/gcc.target/i386/rtm-check.h

@@ -0,0 +1,32 @@
+#include <stdlib.h>
+#include "cpuid.h"
+
+static void rtm_test (void);
+
+static void __attribute__ ((noinline)) do_test (void)
+{
+  rtm_test ();
+}
+
+int
+main ()
+{
+  unsigned int eax, ebx, ecx, edx;
+
+  if (__get_cpuid_max (0, NULL) >= 7)
+    {
+      __cpuid_count (7, 0, eax, ebx, ecx, edx);
+      if (ebx & bit_RTM)
+	{
+	  do_test ();
+#ifdef DEBUG
+	  printf ("PASSED\n");
+#endif
+	  return 0;
+	}
+    }
+#ifdef DEBUG
+  printf ("SKIPPED\n");
+#endif
+  return 0;
+}