[Bug rtl-optimization/42475] ICE at -O1 and above: internal compiler error: in simplify_subreg, at simplify-rtx.c:4954

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2009-12-23 17:04 -------
Subject: Bug 42475

Author: jakub
Date: Wed Dec 23 17:04:07 2009
New Revision: 155430

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155430
Log:
        PR rtl-optimization/42475
        * combine.c (make_compound_operation) <case SUBREG>: Use mode of
        SUBREG_REG (x) instead of tem's mode.

        * gcc.dg/pr42475.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr42475.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42475