[Bug inline-asm/49142] New: Invalid 8bit register operand

[Bug inline-asm/49142] New: Invalid 8bit register operand

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49142

           Summary: Invalid 8bit register operand
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: inline-asm
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com
            Target: x86_64


i386.md has

(define_insn "*movqi_extzv_2_rex64"
  [(set (match_operand:QI 0 "register_operand" "=Q,?R")
        (subreg:QI
          (zero_extract:SI (match_operand 1 "ext_register_operand" "Q,Q")
                           (const_int 8)
                           (const_int 8)) 0))]
  "TARGET_64BIT"
{
  switch (get_attr_type (insn))
    {
    case TYPE_IMOVX:
      return "movz{bl|x}\t{%h1, %k0|%k0, %h1}";
    default:
      return "mov{b}\t{%h1, %0|%0, %h1}";
    }
}

However, since %ah can only be used with legacy 8bit register,
it puts restriction on the other operand.  We shouldn't generate
"movb %ah, %dil".

[Bug inline-asm/49142] Invalid 8bit register operand

[hjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49142

--- Comment #1 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2011-05-25 16:19:40 UTC ---
Author: hjl
Date: Wed May 25 16:19:36 2011
New Revision: 174211

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174211
Log:
Replace q_regs_operand with QIreg_operand in QI ext patterns.

2011-05-25  H.J. Lu  <hongjiu.lu@intel.com>

    PR target/49142
    * config/i386/i386.md (*movqi_extv_1_rex64): Remove
    "register_operand" check and replace q_regs_operand with
    QIreg_operand in "type" calculation.
    (*movqi_extv_1): Likewise.
    (*movqi_extzv_2_rex64): Likewise.
    (*movqi_extzv_2): Likewise.

    * config/i386/predicates.md (QIreg_operand): New.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.md
    trunk/gcc/config/i386/predicates.md

[Bug inline-asm/49142] Invalid 8bit register operand

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49142

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.7.0

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2011-06-24 15:39:25 UTC ---
Fixed.