re PR target/52775 (Change default for using FCFID instruction)

[gcc]
2012-04-11  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/52775
	* config/rs6000/rs6000.h (TARGET_FCFID): Add TARGET_PPC_GPOPT to
	the list of options to enable the FCFID instruction.
	(TARGET_EXTRA_BUILTINS): Adjust comment.

[gcc/testsuite]
2012-04-11  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/52775
	* gcc.target/powerpc/pr52775.c: New file.

From-SVN: r186387

gcc/ChangeLog

+2012-04-12  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	PR target/52775
+	* config/rs6000/rs6000.h (TARGET_FCFID): Add TARGET_PPC_GPOPT to
+	the list of options to enable the FCFID instruction.
+	(TARGET_EXTRA_BUILTINS): Adjust comment.
+
 2012-04-12  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
 
 	PR tree-optimization/18589

gcc/config/rs6000/rs6000.h

@@ -467,10 +467,11 @@ extern int rs6000_vector_align[];
 /* ISA 2.01 allowed FCFID to be done in 32-bit, previously it was 64-bit only.
    Enable 32-bit fcfid's on any of the switches for newer ISA machines or
    XILINX.  */
-#define TARGET_FCFID	(TARGET_POWERPC64 \
-			 || TARGET_POPCNTB	/* ISA 2.02 */ \
-			 || TARGET_CMPB		/* ISA 2.05 */ \
-			 || TARGET_POPCNTD	/* ISA 2.06 */ \
+#define TARGET_FCFID	(TARGET_POWERPC64				\
+			 || TARGET_PPC_GPOPT	/* 970/power4 */	\
+			 || TARGET_POPCNTB	/* ISA 2.02 */		\
+			 || TARGET_CMPB		/* ISA 2.05 */		\
+			 || TARGET_POPCNTD	/* ISA 2.06 */		\
 			 || TARGET_XILINX_FPU)
 
 #define TARGET_FCTIDZ	TARGET_FCFID
@@ -492,7 +493,7 @@ extern int rs6000_vector_align[];
 
 #define TARGET_EXTRA_BUILTINS	(!TARGET_SPE && !TARGET_PAIRED_FLOAT	 \
 				 && ((TARGET_POWERPC64			 \
-				      || TARGET_PPC_GPOPT /* 970 */	 \
+				      || TARGET_PPC_GPOPT /* 970/power4 */ \
 				      || TARGET_POPCNTB	  /* ISA 2.02 */ \
 				      || TARGET_CMPB	  /* ISA 2.05 */ \
 				      || TARGET_POPCNTD	  /* ISA 2.06 */ \

gcc/testsuite/ChangeLog

+2012-04-12  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	PR target/52775
+	* gcc.target/powerpc/pr52775.c: New file.
+
 2012-04-12  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
 
 	PR tree-optimization/18589

gcc/testsuite/gcc.target/powerpc/pr52775.c

+/* { dg-do compile { target { powerpc*-*-* && ilp32 } } } */
+/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
+/* { dg-options "-O1 -mcpu=power4" } */
+/* { dg-final { scan-assembler-times "fcfid" 2 } } */
+
+double
+int_to_double (int *p)
+{
+  return (double)*p;
+}
+
+double
+long_long_to_double (long long *p)
+{
+  return (double)*p;
+}