rs6000: Don't clear TARGET_ISEL implicitly

We want to actually use isel, so we shouldn't disable it.  It is
already not set by default on CPUs that don't have it, or where we
do not want to use it.

	* config/rs6000/rs6000.c (rs6000_option_override_internal): Don't
	disable isel if it was not set explicitly.

From-SVN: r254485

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3690705de0d94bfdeabfdd9993cdf7b69856d8a7..050224151eba19e8bc20b22c5280a402447f4fd8 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-11-06  Segher Boessenkool  <segher@kernel.crashing.org>
+
+       * config/rs6000/rs6000.c (rs6000_option_override_internal): Don't
+       disable isel if it was not set explicitly.
+
 2017-11-06  James Bowman  <james.bowman@ftdichip.com>
 
        * gcc/dwarf2out.c (modified_type_die): Retain ADDR_SPACE

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index c2712d9deb2dc4a73077aea8fb4489714463b3f7..aacf3f12b3273b3c3fdbe744477e34e60dfbb4c9 100644 (file)
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4798,10 +4798,7 @@ rs6000_option_override_internal (bool global_init_p)
   /* For the E500 family of cores, reset the single/double FP flags to let us
      check that they remain constant across attributes or pragmas.  Also,
      clear a possible request for string instructions, not supported and which
-     we might have silently queried above for -Os. 
-
-     For other families, clear ISEL in case it was set implicitly.
-  */
+     we might have silently queried above for -Os.  */
 
   switch (rs6000_cpu)
     {
@@ -4811,19 +4808,12 @@ rs6000_option_override_internal (bool global_init_p)
     case PROCESSOR_PPCE500MC64:
     case PROCESSOR_PPCE5500:
     case PROCESSOR_PPCE6500:
-
       rs6000_single_float = 0;
       rs6000_double_float = 0;
-
       rs6000_isa_flags &= ~OPTION_MASK_STRING;
-
       break;
 
     default:
-
-      if (cpu_index >= 0 && !(rs6000_isa_flags_explicit & OPTION_MASK_ISEL))
-       rs6000_isa_flags &= ~OPTION_MASK_ISEL;
-
       break;
     }