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[Bug target/49781] [x32] Unnecessary lea in x32 mode
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 7 Aug 2011 12:53:56 +0000
- Subject: [Bug target/49781] [x32] Unnecessary lea in x32 mode
- Auto-submitted: auto-generated
- References: <bug-49781-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49781
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #24918|0 |1
is obsolete| |
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2011.08.07 12:53:50
AssignedTo|unassigned at gcc dot |ubizjak at gmail dot com
|gnu.org |
Ever Confirmed|0 |1
--- Comment #29 from Uros Bizjak <ubizjak at gmail dot com> 2011-08-07 12:53:50 UTC ---
Created attachment 24938
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24938
WIP patch that exploits addr32.
New version of patch for testing. Survives bootstrap + regtest on
x86_64-pc-linux-gnu.
2011-08-07 Uros Bizjak <ubizjak@gmail.com>
PR target/49781
* config/i386/i386.c (ix86_decompose_address): Allow zero-extended
SImode addresses.
(ix86_print_operand_address): Handle zero-extended addresses.
(memory_address_length): Add length of addr32 prefix for
zero-extended addresses.
(ix86_secondary_reload): Handle moves to/from double-word general
registers from/to zero-extended addresses.
* config/i386/predicates.md (lea_address_operand): Reject
zero-extended operands.