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[Bug target/52461] [avr] XMEGA+EBI: RAMPZ clobbered while reading from flash
- From: "gjl at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 21 Mar 2012 13:20:25 +0000
- Subject: [Bug target/52461] [avr] XMEGA+EBI: RAMPZ clobbered while reading from flash
- Auto-submitted: auto-generated
- References: <bug-52461-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52461
--- Comment #9 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2012-03-21 13:20:25 UTC ---
Author: gjl
Date: Wed Mar 21 13:20:20 2012
New Revision: 185605
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=185605
Log:
PR rtl-optimization/52543
PR target/52461
* config/avr/avr-protos.h (avr_load_lpm): New prototype.
* config/avr/avr.c (avr_mode_dependent_address_p): New function.
(TARGET_MODE_DEPENDENT_ADDRESS_P): New define.
(avr_load_libgcc_p): Restrict to __flash loads.
(avr_out_lpm): Only handle 1-byte loads from __flash.
(avr_load_lpm): New function.
(avr_find_unused_d_reg): Remove.
(avr_out_lpm_no_lpmx): Remove.
(adjust_insn_length): Handle ADJUST_LEN_LOAD_LPM.
* config/avr/avr.md (unspec): Add UNSPEC_LPM.
(load_<mode>_libgcc): Use UNSPEC_LPM instead of MEM.
(load_<mode>, load_<mode>_clobber): New insns.
(mov<mode>): For multi-byte move from non-generic
16-bit address spaces: Expand to load_<mode> resp.
load_<mode>_clobber.
(load<mode>_libgcc): Remove expander.
(split-lpmx): Remove split.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/avr/avr-protos.h
trunk/gcc/config/avr/avr.c
trunk/gcc/config/avr/avr.md