===================================================================
@@ -4529,6 +4529,38 @@
emit_label_after (skip_neg_label, emit_insn (gen_negc (high_dst, high_src)));
DONE;
})
+
+(define_expand "bswapsi2"
+ [(set (match_operand:SI 0 "arith_reg_dest" "")
+ (bswap:SI (match_operand:SI 1 "arith_reg_operand" "")))]
+ "TARGET_SH1"
+{
+ if (! can_create_pseudo_p ())
+ FAIL;
+ else
+ {
+ rtx tmp0 = gen_reg_rtx (SImode);
+ rtx tmp1 = gen_reg_rtx (SImode);
+
+ emit_insn (gen_swapbsi2 (tmp0, operands[1]));
+ emit_insn (gen_rotlsi3_16 (tmp1, tmp0));
+ emit_insn (gen_swapbsi2 (operands[0], tmp1));
+ DONE;
+ }
+})
+
+(define_insn "swapbsi2"
+ [(set (match_operand:SI 0 "arith_reg_dest" "=r")
+ (ior:SI (and:SI (match_operand:SI 1 "arith_reg_operand" "r")
+ (const_int 4294901760))
+ (ior:SI (and:SI (ashift:SI (match_dup 1) (const_int 8))
+ (const_int 65280))
+ (and:SI (ashiftrt:SI (match_dup 1) (const_int 8))
+ (const_int 255)))))]
+ "TARGET_SH1"
+ "swap.b %1,%0"
+ [(set_attr "type" "arith")])
+
;; -------------------------------------------------------------------------
;; Zero extension instructions
Hello, The attached patch adds support for the bswap32 built-in on SH. Tested with make -k -j8 check RUNTESTFLAGS="--target_board=sh-sim \{-m2/-ml,-m2/-mb,-m2a/-mb,-m2a-single/-mb,-m4/-ml, -m4/-mb,-m4-single/-ml,-m4-single/-mb,-m4a-single/-ml, -m4a-single/-mb}" and no new failures. Cheers, Oleg ChangeLog: PR target/53568 * config/sh/sh.md (bswapsi2): New expander. (swapbsi2): New insn.