Comment 12 for bug 1296942

Author: jakub
Date: Sun Feb 1 17:33:19 2015
New Revision: 220323

URL: https://gcc.gnu.org/viewcvs?rev=220323&root=gcc&view=rev
Log:
 Backported from mainline
 2015-01-23 Jakub Jelinek <email address hidden>

 PR rtl-optimization/63637
 PR rtl-optimization/60663
 * cse.c (merge_equiv_classes): Set new_elt->cost to MAX_COST
 if elt->cost is MAX_COST for ASM_OPERANDS.
 (find_sets_in_insn): Fix up comment typo.
 (cse_insn): Don't set src_volatile for all non-volatile
 ASM_OPERANDS in PARALLELs, but just those with multiple outputs
 or with "memory" clobber. Set elt->cost to MAX_COST
 for ASM_OPERANDS in PARALLEL. Set src_elt->cost to MAX_COST
 if new_src is ASM_OPERANDS and elt->cost is MAX_COST.

 * gcc.dg/pr63637-1.c: New test.
 * gcc.dg/pr63637-2.c: New test.
 * gcc.dg/pr63637-3.c: New test.
 * gcc.dg/pr63637-4.c: New test.
 * gcc.dg/pr63637-5.c: New test.
 * gcc.dg/pr63637-6.c: New test.
 * gcc.target/i386/pr63637-1.c: New test.
 * gcc.target/i386/pr63637-2.c: New test.
 * gcc.target/i386/pr63637-3.c: New test.
 * gcc.target/i386/pr63637-4.c: New test.
 * gcc.target/i386/pr63637-5.c: New test.
 * gcc.target/i386/pr63637-6.c: New test.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/pr63637-1.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/pr63637-2.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/pr63637-3.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/pr63637-4.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/pr63637-5.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/pr63637-6.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr63637-1.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr63637-2.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr63637-3.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr63637-4.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr63637-5.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr63637-6.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/cse.c
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog