[Bug target/39942] Nonoptimal code - leaveq; xchg %ax,%ax; retq

[hjl at gcc dot gnu dot org]

------- Comment #48 from hjl at gcc dot gnu dot org  2009-05-18 17:21 -------
Subject: Bug 39942

Author: hjl
Date: Mon May 18 17:21:13 2009
New Revision: 147671

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=147671
Log:
2009-05-18  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/39942
        * config/i386/i386.c (ix86_avoid_jump_misspredicts): Replace
        gen_align with gen_pad.
        (ix86_reorg): Check ASM_OUTPUT_MAX_SKIP_PAD instead of
        #ifdef ASM_OUTPUT_MAX_SKIP_ALIGN.

        * config/i386/i386.h (ASM_OUTPUT_MAX_SKIP_PAD): New.
        * config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_PAD): Likewise.

        * config/i386/i386.md (align): Renamed to ...
        (pad): This.  Replace ASM_OUTPUT_MAX_SKIP_ALIGN with
        ASM_OUTPUT_MAX_SKIP_PAD.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/config/i386/i386.h
    trunk/gcc/config/i386/i386.md
    trunk/gcc/config/i386/x86-64.h


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39942