[4.8, PATCH 17/26] Backport Power8 and LE support: Direct moves

[Bill Schmidt]

Hi,

This patch (diff-direct-move) backports support for the Power8 direct
move instructions for little endian.

Thanks,
Bill


2014-03-19  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

        Backport from mainline
        2013-10-23  Pat Haugen  <pthau...@us.ibm.com>

        * gcc.target/powerpc/direct-move.h: Fix header for executable tests.

        Back port from mainline
        2014-01-16  Michael Meissner  <meiss...@linux.vnet.ibm.com>

        PR target/59844
        * config/rs6000/rs6000.md (reload_vsx_from_gprsf): Add little
        endian support, remove tests for WORDS_BIG_ENDIAN.
        (p8_mfvsrd_3_<mode>): Likewise.
        (reload_gpr_from_vsx<mode>): Likewise.
        (reload_gpr_from_vsxsf): Likewise.
        (p8_mfvsrd_4_disf): Likewise.


Index: gcc-4_8-test/gcc/config/rs6000/rs6000.md
===================================================================
--- gcc-4_8-test.orig/gcc/config/rs6000/rs6000.md
+++ gcc-4_8-test/gcc/config/rs6000/rs6000.md
@@ -9438,7 +9438,7 @@
        (unspec:SF [(match_operand:SF 1 "register_operand" "r")]
                   UNSPEC_P8V_RELOAD_FROM_GPR))
    (clobber (match_operand:DI 2 "register_operand" "=r"))]
-  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE && WORDS_BIG_ENDIAN"
+  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
   "#"
   "&& reload_completed"
   [(const_int 0)]
@@ -9465,7 +9465,7 @@
   [(set (match_operand:DF 0 "register_operand" "=r")
        (unspec:DF [(match_operand:FMOVE128_GPR 1 "register_operand" "wa")]
                   UNSPEC_P8V_RELOAD_FROM_VSX))]
-  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE && WORDS_BIG_ENDIAN"
+  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
   "mfvsrd %0,%x1"
   [(set_attr "type" "mftgpr")])
 
@@ -9475,7 +9475,7 @@
         [(match_operand:FMOVE128_GPR 1 "register_operand" "wa")]
         UNSPEC_P8V_RELOAD_FROM_VSX))
    (clobber (match_operand:FMOVE128_GPR 2 "register_operand" "=wa"))]
-  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE && WORDS_BIG_ENDIAN"
+  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
   "#"
   "&& reload_completed"
   [(const_int 0)]
@@ -9502,7 +9502,7 @@
        (unspec:SF [(match_operand:SF 1 "register_operand" "wa")]
                   UNSPEC_P8V_RELOAD_FROM_VSX))
    (clobber (match_operand:V4SF 2 "register_operand" "=wa"))]
-  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE && WORDS_BIG_ENDIAN"
+  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
   "#"
   "&& reload_completed"
   [(const_int 0)]
@@ -9524,7 +9524,7 @@
   [(set (match_operand:DI 0 "register_operand" "=r")
        (unspec:DI [(match_operand:V4SF 1 "register_operand" "wa")]
                   UNSPEC_P8V_RELOAD_FROM_VSX))]
-  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE && WORDS_BIG_ENDIAN"
+  "TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
   "mfvsrd %0,%x1"
   [(set_attr "type" "mftgpr")])
 
Index: gcc-4_8-test/gcc/testsuite/gcc.target/powerpc/direct-move.h
===================================================================
--- gcc-4_8-test.orig/gcc/testsuite/gcc.target/powerpc/direct-move.h
+++ gcc-4_8-test/gcc/testsuite/gcc.target/powerpc/direct-move.h
@@ -1,5 +1,7 @@
 /* Test functions for direct move support.  */
 
+#include <math.h>
+extern void abort (void);
 
 #ifndef VSX_REG_ATTR
 #define VSX_REG_ATTR "wa"
@@ -111,7 +113,7 @@ const struct test_struct test_functions[
 void __attribute__((__noinline__))
 test_value (TYPE a)
 {
-  size_t i;
+  long i;
 
   for (i = 0; i < sizeof (test_functions) / sizeof (test_functions[0]); i++)
     {
@@ -127,8 +129,7 @@ test_value (TYPE a)
 int
 main (void)
 {
-  size_t i;
-  long j;
+  long i,j;
   union {
     TYPE value;
     unsigned char bytes[sizeof (TYPE)];