===================================================================
@@ -14616,6 +14616,31 @@
[(set (reg:SI T_REG)
(zero_extract:SI (match_dup 0) (const_int 1) (match_dup 1)))])
+(define_insn_and_split "*zero_extract_3"
+ [(set (match_operand:SI 0 "arith_reg_dest")
+ (and:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand")
+ (match_operand 2 "const_int_operand"))
+ (match_operand 3 "const_int_operand")))
+ (clobber (reg:SI T_REG))]
+ "TARGET_SH1 && can_create_pseudo_p ()
+ && exact_log2 (INTVAL (operands[3])) >= 0"
+ "#"
+ "&& 1"
+ [(const_int 0)]
+{
+ int rshift = INTVAL (operands[2]);
+ int lshift = exact_log2 (INTVAL (operands[3]));
+
+ rtx tmp = gen_reg_rtx (SImode);
+ emit_insn (gen_rtx_PARALLEL (VOIDmode,
+ gen_rtvec (2,
+ gen_rtx_SET (tmp,
+ gen_rtx_ZERO_EXTRACT (SImode, operands[1], const1_rtx,
+ GEN_INT (rshift + lshift))),
+ gen_rtx_CLOBBER (VOIDmode, get_t_reg_rtx ()))));
+ emit_insn (gen_ashlsi3 (operands[0], tmp, GEN_INT (lshift)));
+})
+
;; -------------------------------------------------------------------------
;; SH2A instructions for bitwise operations.
;; FIXME: Convert multiple instruction insns to insn_and_split.
===================================================================
@@ -2,7 +2,7 @@
special cases. If everything works as expected we won't see any
movt instructions in these cases. */
/* { dg-do compile } */
-/* { dg-options "-O1" } */
+/* { dg-options "-O2" } */
/* { dg-skip-if "" { "sh*-*-*" } { "-m5*"} { "" } } */
/* { dg-final { scan-assembler-times "addc" 6 } } */
/* { dg-final { scan-assembler-times "subc" 4 } } */
Hi, The attached patch fixes PR 67636 in a simple way by adding yet another bit extraction pattern as mentioned in PR 64345#c3. Tested on sh-elf with make -k check RUNTESTFLAGS="--target_board=sh-sim\{-m2/-ml,-m2/-mb, -m2a/-mb,-m4/-ml,-m4/-mb,-m4a/-ml,-m4a/-mb}" Committed to trunk as r233397. Cheers, Oleg gcc/ChangeLog: PR target/67636 PR target/64345 * config/sh/sh.md (*zero_extract_3): New insn_and_split pattern. gcc/testsuite/ChangeLog: PR target/67636 PR target/64345 * gcc.target/sh/pr54236-1.c: Adjust optimization level.