[PATCH 1/2] xtensa: Add RTX costs for if_then_else

[Takayuki 'January June' Suwa via Gcc-patches]

It takes one machine instruction for both condtional branch and move.

gcc/ChangeLog:

        * config/xtensa/xtensa.cc (xtensa_rtx_costs):
        Add new case for IF_THEN_ELSE.
---
 gcc/config/xtensa/xtensa.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/config/xtensa/xtensa.cc b/gcc/config/xtensa/xtensa.cc
index a851a7ae6b3..6ac879c38fb 100644
--- a/gcc/config/xtensa/xtensa.cc
+++ b/gcc/config/xtensa/xtensa.cc
@@ -4273,6 +4273,7 @@ xtensa_rtx_costs (rtx x, machine_mode mode, int 
outer_code,
 
     case ZERO_EXTRACT:
     case ZERO_EXTEND:
+    case IF_THEN_ELSE:
       *total = COSTS_N_INSNS (1);
       return true;
 
-- 
2.20.1