[Bug rtl-optimization/69447] [5 Regression] wrong code with -O2 -fno-schedule-insns and mixed 8/16/32/64bit arithmetics @ armv7a

[rth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69447

--- Comment #20 from Richard Henderson <rth at gcc dot gnu.org> ---
Author: rth
Date: Thu Jan 28 18:11:27 2016
New Revision: 232938

URL: https://gcc.gnu.org/viewcvs?rev=232938&root=gcc&view=rev
Log:
PR rtl-opt/69447

  * lra-remat.c (subreg_regs): New.
  (dump_candidates_and_remat_bb_data): Dump it.
  (operand_to_remat): Reject if operand in subreg_regs.
  (set_bb_regs): Collect subreg_regs.
  (lra_remat): Init and free subreg_regs.  Compute
  calculate_local_reg_remat_bb_data before create_cands.

Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.c-torture/execute/pr69447.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/lra-remat.c