umuldi3_highpart expander does: if (REG_P (operands[2])) operands[2] = gen_rtx_ZERO_EXTEND (TImode, operands[2]);
on register_operand predicate, which also allows SUBREG RTX. So, subregs were emitted without ZERO_EXTEND RTX. But nowadays we have UMUL_HIGHPART that allows us to fix this issue while also simplifying the instruction RTX. PR target/113720 gcc/ChangeLog: * config/alpha/alpha.md (umuldi3_highpart): Remove expander. (*umuldi3_highpart_reg): Rename to umuldi3_highpart and simplify insn RTX using UMUL_HIGHPART rtx_code. (*umuldi3_highpart_const): Remove. Tested by building a cross-compiler to alpha-linux-gnu. Uros.
diff --git a/gcc/config/alpha/alpha.md b/gcc/config/alpha/alpha.md index 94d5d339c3d..79f12c53c16 100644 --- a/gcc/config/alpha/alpha.md +++ b/gcc/config/alpha/alpha.md @@ -683,41 +683,10 @@ (define_insn "mulv<mode>3" [(set_attr "type" "imul") (set_attr "opsize" "<mode>")]) -(define_expand "umuldi3_highpart" - [(set (match_operand:DI 0 "register_operand") - (truncate:DI - (lshiftrt:TI - (mult:TI (zero_extend:TI - (match_operand:DI 1 "register_operand")) - (match_operand:DI 2 "reg_or_8bit_operand")) - (const_int 64))))] - "" -{ - if (REG_P (operands[2])) - operands[2] = gen_rtx_ZERO_EXTEND (TImode, operands[2]); -}) - -(define_insn "*umuldi3_highpart_reg" - [(set (match_operand:DI 0 "register_operand" "=r") - (truncate:DI - (lshiftrt:TI - (mult:TI (zero_extend:TI - (match_operand:DI 1 "register_operand" "r")) - (zero_extend:TI - (match_operand:DI 2 "register_operand" "r"))) - (const_int 64))))] - "" - "umulh %1,%2,%0" - [(set_attr "type" "imul") - (set_attr "opsize" "udi")]) - -(define_insn "*umuldi3_highpart_const" +(define_insn "umuldi3_highpart" [(set (match_operand:DI 0 "register_operand" "=r") - (truncate:DI - (lshiftrt:TI - (mult:TI (zero_extend:TI (match_operand:DI 1 "register_operand" "r")) - (match_operand:TI 2 "cint8_operand" "I")) - (const_int 64))))] + (umul_highpart:DI (match_operand:DI 1 "reg_or_0_operand" "%rJ") + (match_operand:DI 2 "reg_or_8bit_operand" "rI")))] "" "umulh %1,%2,%0" [(set_attr "type" "imul")