[Bug target/39139] [4.4 Regression] ICE with stringop and register var

[jakub at gcc dot gnu dot org]

------- Comment #28 from jakub at gcc dot gnu dot org  2009-02-10 16:22 -------
Subject: Bug 39139

Author: jakub
Date: Tue Feb 10 16:22:29 2009
New Revision: 144065

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=144065
Log:
        PR target/39139
        * function.h (struct function): Add has_local_explicit_reg_vars
        bit.
        * gimplify.c (gimplify_bind_expr): Set it if local DECL_HARD_REGISTER
        VAR_DECLs were seen.
        * tree-ssa-live.c (remove_unused_locals): Recompute
        cfun->has_local_explicit_reg_vars.
        * tree-ssa-sink.c (statement_sink_location): Don't sink BLKmode
        copies or clearings if cfun->has_local_explicit_reg_vars.

        * gcc.target/i386/pr39139.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr39139.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/function.h
    trunk/gcc/gimplify.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-live.c
    trunk/gcc/tree-ssa-sink.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39139