From: Jeff Law <jeffreyalaw@gmail.com>
Date: Fri, 25 Jun 2021 13:22:28 +0000 (-0400)
Subject: Use right shifts to eliminate redundant test/compare insns on the H8
X-Git-Tag: basepoints/gcc-13~6503
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3a50aed09edc5e69080a0e49851acdb874227256;p=thirdparty%2Fgcc.git

Use right shifts to eliminate redundant test/compare insns on the H8

gcc/
	* config/h8300/h8300.c (select_cc_mode): Handle ASHIFTRT and LSHIFTRT.
---

diff --git a/gcc/config/h8300/h8300.c b/gcc/config/h8300/h8300.c
index 511c2b28e402..d8b4bfcbdbe7 100644
--- a/gcc/config/h8300/h8300.c
+++ b/gcc/config/h8300/h8300.c
@@ -1947,9 +1947,10 @@ h8300_select_cc_mode (enum rtx_code cond, rtx op0, rtx op1)
   if (op1 == const0_rtx
       && (cond == EQ || cond == NE || cond == LT || cond == GE)
       && (GET_CODE (op0) == PLUS || GET_CODE (op0) == MINUS
-          || GET_CODE (op0) == NEG || GET_CODE (op0) == AND
-          || GET_CODE (op0) == IOR || GET_CODE (op0) == XOR
-          || GET_CODE (op0) == NOT || GET_CODE (op0) == ASHIFT
+	  || GET_CODE (op0) == NEG || GET_CODE (op0) == AND
+	  || GET_CODE (op0) == IOR || GET_CODE (op0) == XOR
+	  || GET_CODE (op0) == NOT || GET_CODE (op0) == ASHIFT
+	  || GET_CODE (op0) == ASHIFTRT || GET_CODE (op0) == LSHIFTRT
 	  || GET_CODE (op0) == MULT || GET_CODE (op0) == SYMBOL_REF
 	  || GET_CODE (op0) == SIGN_EXTEND || GET_CODE (op0) == ZERO_EXTEND
 	  || REG_P (op0) || MEM_P (op0)))