re PR rtl-optimization/46865 (Using -save-temps (or ccache, distcc) produces…

re PR rtl-optimization/46865 (Using -save-temps (or ccache, distcc) produces different results with multiline macros containing asm code)

	PR rtl-optimization/46865
	* rtl.c (rtx_equal_p_cb, rtx_equal_p): For last operand of
	ASM_OPERANDS and ASM_INPUT if integers are different,
	call locator_eq.
	* jump.c (rtx_renumbered_equal_p): Likewise.

	* gcc.target/i386/pr46865-1.c: New test.
	* gcc.target/i386/pr46865-2.c: New test.

From-SVN: r167686

gcc/ChangeLog

 2010-12-10  Jakub Jelinek  <jakub@redhat.com>
 
+	PR rtl-optimization/46865
+	* rtl.c (rtx_equal_p_cb, rtx_equal_p): For last operand of
+	ASM_OPERANDS and ASM_INPUT if integers are different,
+	call locator_eq.
+	* jump.c (rtx_renumbered_equal_p): Likewise.
+
 	PR tree-optimization/46864
 	* tree-ssa-loop-im.c (loop_suitable_for_sm): Return false even
 	when there are EDGE_EH exit edges.

gcc/jump.c

@@ -1727,7 +1727,13 @@ rtx_renumbered_equal_p (const_rtx x, const_rtx y)
 
 	case 'i':
 	  if (XINT (x, i) != XINT (y, i))
-	    return 0;
+	    {
+	      if (((code == ASM_OPERANDS && i == 6)
+		   || (code == ASM_INPUT && i == 1))
+		  && locator_eq (XINT (x, i), XINT (y, i)))
+		break;
+	      return 0;
+	    }
 	  break;
 
 	case 't':

gcc/rtl.c

@@ -431,7 +431,15 @@ rtx_equal_p_cb (const_rtx x, const_rtx y, rtx_equal_p_callback_function cb)
 	case 'n':
 	case 'i':
 	  if (XINT (x, i) != XINT (y, i))
-	    return 0;
+	    {
+#ifndef GENERATOR_FILE
+	      if (((code == ASM_OPERANDS && i == 6)
+		   || (code == ASM_INPUT && i == 1))
+		  && locator_eq (XINT (x, i), XINT (y, i)))
+		break;
+#endif
+	      return 0;
+	    }
 	  break;
 
 	case 'V':
@@ -555,7 +563,15 @@ rtx_equal_p (const_rtx x, const_rtx y)
 	case 'n':
 	case 'i':
 	  if (XINT (x, i) != XINT (y, i))
-	    return 0;
+	    {
+#ifndef GENERATOR_FILE
+	      if (((code == ASM_OPERANDS && i == 6)
+		   || (code == ASM_INPUT && i == 1))
+		  && locator_eq (XINT (x, i), XINT (y, i)))
+		break;
+#endif
+	      return 0;
+	    }
 	  break;
 
 	case 'V':

gcc/testsuite/ChangeLog

 2010-12-10  Jakub Jelinek  <jakub@redhat.com>
 
+	PR rtl-optimization/46865
+	* gcc.target/i386/pr46865-1.c: New test.
+	* gcc.target/i386/pr46865-2.c: New test.
+
 	PR tree-optimization/46864
 	* g++.dg/opt/pr46864.C: New test.
 

gcc/testsuite/gcc.target/i386/pr46865-1.c

+/* PR rtl-optimization/46865 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+extern unsigned long f;
+
+#define m1(f)							\
+  if (f & 1)							\
+    asm volatile ("nop /* asmnop */\n");			\
+  else								\
+    asm volatile ("nop /* asmnop */\n");
+
+#define m2(f)							\
+  if (f & 1)							\
+    asm volatile ("nop /* asmnop */\n" : : "i" (6) : "cx");	\
+  else								\
+    asm volatile ("nop /* asmnop */\n" : : "i" (6) : "cx");
+
+void
+foo (void)
+{
+  m1 (f);
+}
+
+void
+bar (void)
+{
+  m2 (f);
+}
+
+/* { dg-final { scan-assembler-times "asmnop" 2 } } */

gcc/testsuite/gcc.target/i386/pr46865-2.c

+/* PR rtl-optimization/46865 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -save-temps" } */
+
+extern unsigned long f;
+
+#define m1(f)							\
+  if (f & 1)							\
+    asm volatile ("nop /* asmnop */\n");			\
+  else								\
+    asm volatile ("nop /* asmnop */\n");
+
+#define m2(f)							\
+  if (f & 1)							\
+    asm volatile ("nop /* asmnop */\n" : : "i" (6) : "cx");	\
+  else								\
+    asm volatile ("nop /* asmnop */\n" : : "i" (6) : "cx");
+
+void
+foo (void)
+{
+  m1 (f);
+}
+
+void
+bar (void)
+{
+  m2 (f);
+}
+
+/* { dg-final { scan-assembler-times "asmnop" 2 } } */
+/* { dg-final { cleanup-saved-temps } } */