diff options
Diffstat (limited to 'gcc/config/h8300/h8300.md')
| -rw-r--r-- | gcc/config/h8300/h8300.md | 44 |
1 files changed, 41 insertions, 3 deletions
diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md index 06596e5..495fba3 100644 --- a/gcc/config/h8300/h8300.md +++ b/gcc/config/h8300/h8300.md @@ -2043,9 +2043,13 @@ (zero_extend:HI (match_dup 2)))] "operands[2] = gen_rtx_REG (QImode, REGNO (operands[0]));") -;; The compiler can synthesize a H8/300H variant of this which is -;; just as efficient as one that we'd create -(define_insn "zero_extendqisi2" +(define_expand "zero_extendqisi2" + [(set (match_operand:SI 0 "register_operand" "") + (zero_extend:SI (match_operand:QI 1 "general_operand_src" "")))] + "" + "") + +(define_insn "*zero_extendqisi2_h8300" [(set (match_operand:SI 0 "register_operand" "=r,r") (zero_extend:SI (match_operand:QI 1 "general_operand_src" "0,g>")))] "TARGET_H8300" @@ -2055,6 +2059,40 @@ [(set_attr "length" "4,8") (set_attr "cc" "clobber,clobber")]) +(define_insn "*zero_extendqisi2_h8300hs" + [(set (match_operand:SI 0 "register_operand" "=r,r") + (zero_extend:SI (match_operand:QI 1 "general_operand_src" "0,g>")))] + "TARGET_H8300H || TARGET_H8300S" + "@ + extu.w %T0\;extu.l %S0 + mov.b %R1,%w0\;extu.w %T0\;extu.l %S0" + [(set_attr "length" "4,12") + (set_attr "cc" "set_znv,set_znv")]) + +(define_split + [(set (match_operand:SI 0 "register_operand" "") + (zero_extend:SI (match_operand:QI 1 "general_operand_src" "")))] + "(TARGET_H8300H || TARGET_H8300S) + && reg_overlap_mentioned_p (operands[0], operands[1]) + && reload_completed" + [(set (match_dup 2) + (match_dup 1)) + (set (match_dup 0) + (zero_extend:SI (match_dup 2)))] + "operands[2] = gen_rtx_REG (QImode, REGNO (operands[0]));") + +(define_split + [(set (match_operand:SI 0 "register_operand" "") + (zero_extend:SI (match_operand:QI 1 "general_operand_src" "")))] + "(TARGET_H8300H || TARGET_H8300S) + && !reg_overlap_mentioned_p (operands[0], operands[1]) + && reload_completed" + [(set (match_dup 0) + (const_int 0)) + (set (strict_low_part (match_dup 2)) + (match_dup 1))] + "operands[2] = gen_rtx_REG (QImode, REGNO (operands[0]));") + (define_expand "zero_extendhisi2" [(set (match_operand:SI 0 "register_operand" "") (zero_extend:SI (match_operand:HI 1 "register_operand" "")))] |