[Bug c/24414] Old-style asms don't clobber memory

[edlinger at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24414

--- Comment #20 from Bernd Edlinger <edlinger at gcc dot gnu.org> ---
Author: edlinger
Date: Mon Jun  6 12:31:59 2016
New Revision: 237133

URL: https://gcc.gnu.org/viewcvs?rev=237133&root=gcc&view=rev
Log:
gcc/
2016-06-06  Bernd Edlinger  <bernd.edlin...@hotmail.de>

        PR c/24414
        * cfgexpand.c (expand_asm_loc): Remove handling for ADDR_EXPR.
        Implicitly clobber memory for basic asm with non-empty assembler
        string.  Use targetm.md_asm_adjust also here.
        * compare-elim.c (arithmetic_flags_clobber_p): Use asm_noperands here.
        * final.c (final_scan_insn): Handle basic asm in PARALLEL block.
        * gimple.c (gimple_asm_clobbers_memory_p): Handle basic asm with
        non-empty assembler string.
        * ira.c (compute_regs_asm_clobbered): Use asm_noperands here.
        * recog.c (asm_noperands): Handle basic asm in PARALLEL block.
        (decode_asm_operands): Handle basic asm in PARALLEL block.
        (extract_insn): Handle basic asm in PARALLEL block.
        * doc/extend.texi: Mention new behavior of basic asm.
        * config/ia64/ia64 (rtx_needs_barrier): Handle ASM_INPUT here.
        * config/pa/pa.c (branch_to_delay_slot_p, branch_needs_nop_p,
        branch_needs_nop_p): Use asm_noperands.

gcc/testsuite/
2016-06-06  Bernd Edlinger  <bernd.edlin...@hotmail.de>

        PR c/24414
        * gcc.target/i386/pr24414.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr24414.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgexpand.c
    trunk/gcc/compare-elim.c
    trunk/gcc/config/ia64/ia64.c
    trunk/gcc/config/pa/pa.c
    trunk/gcc/doc/extend.texi
    trunk/gcc/final.c
    trunk/gcc/gimple.c
    trunk/gcc/ira.c
    trunk/gcc/recog.c
    trunk/gcc/testsuite/ChangeLog