[Bug target/61330] [5 Regression] Thumb ICE for case 920507-1.c

["jsm28 at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61330

--- Comment #7 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Tue Aug 26 17:06:31 2014
New Revision: 214526

URL: https://gcc.gnu.org/viewcvs?rev=214526&root=gcc&view=rev
Log:
Fix ARM ICE for register var asm ("pc") (PR target/60606).

    PR target/60606
    PR target/61330
    * varasm.c (make_decl_rtl): Clear DECL_ASSEMBLER_NAME and
    DECL_HARD_REGISTER and return for invalid register specifications.
    * cfgexpand.c (expand_one_var): If expand_one_hard_reg_var clears
    DECL_HARD_REGISTER, call expand_one_error_var.
    * config/arm/arm.c (arm_hard_regno_mode_ok): Do not allow
    CC_REGNUM with non-MODE_CC modes.
    (arm_regno_class): Return NO_REGS for PC_REGNUM.

testsuite:
    * gcc.dg/torture/pr60606-1.c, gcc.target/arm/pr60606-2.c,
    gcc.target/arm/pr60606-3.c, gcc.target/arm/pr60606-4.c: New tests.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr60606-1.c
    trunk/gcc/testsuite/gcc.target/arm/pr60606-2.c
    trunk/gcc/testsuite/gcc.target/arm/pr60606-3.c
    trunk/gcc/testsuite/gcc.target/arm/pr60606-4.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgexpand.c
    trunk/gcc/config/arm/arm.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/varasm.c