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[Bug target/67850] Wrong call_used_regs used in aggregate_value_p


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67850

--- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Mon Oct 12 12:26:09 2015
New Revision: 228711

URL: https://gcc.gnu.org/viewcvs?rev=228711&root=gcc&view=rev
Log:
Merge ix86_maybe_switch_abi with ix86_set_current_function

ix86_maybe_switch_abi is called to late during RTL expansion and we
use the stale information from compilation of the previous function.
aggregate_value_p uses call_used_regs.  aggregate_value_p is used by
IPA and return value optimization, which are called before
ix86_maybe_switch_abi is called.  This patch merges ix86_maybe_switch_abi
with ix86_set_current_function.

Backport from mainline:

        PR target/67850
        * config/i386/i386.c (ix86_maybe_switch_abi): Merged with ...
        (ix86_set_current_function): This.
        (TARGET_EXPAND_TO_RTL_HOOK): Removed.

Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/config/i386/i386.c


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