epiphany: fix -Wimplicit-fallthrough warnings in epiphany.c.

gcc/ChangeLog:

	* config/epiphany/epiphany.c (epiphany_mode_priority):
	Use gcc_unreachable for not handled cases.

diff --git a/gcc/config/epiphany/epiphany.c b/gcc/config/epiphany/epiphany.c
index e19e61a..c9c3215 100644 (file)
--- a/gcc/config/epiphany/epiphany.c
+++ b/gcc/config/epiphany/epiphany.c
@@ -2371,6 +2371,7 @@ epiphany_mode_priority (int entity, int priority)
          case 2: return (epiphany_normal_fp_rounding == FP_MODE_ROUND_NEAREST
                          ? FP_MODE_ROUND_TRUNC : FP_MODE_ROUND_NEAREST);
          case 3: return FP_MODE_CALLER;
+         default: gcc_unreachable ();
          }
       case FP_MODE_ROUND_NEAREST:
       case FP_MODE_CALLER:
@@ -2380,6 +2381,7 @@ epiphany_mode_priority (int entity, int priority)
          case 1: return FP_MODE_ROUND_TRUNC;
          case 2: return FP_MODE_INT;
          case 3: return FP_MODE_CALLER;
+         default: gcc_unreachable ();
          }
       case FP_MODE_ROUND_TRUNC:
        switch (priority)
@@ -2388,6 +2390,7 @@ epiphany_mode_priority (int entity, int priority)
          case 1: return FP_MODE_ROUND_NEAREST;
          case 2: return FP_MODE_INT;
          case 3: return FP_MODE_CALLER;
+         default: gcc_unreachable ();
          }
       case FP_MODE_ROUND_UNKNOWN:
       case FP_MODE_NONE: