[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.4-387-g315bfa7

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commit 315bfa792075a6536432968285017e24cb6a8d0b
Author: Josh Stone <jistone@redhat.com>
Date:   Fri May 20 18:41:39 2011 -0700

    PR12770: In loc2c, discontiguify based on total_bytes
    
    The total_bytes number is the part that really matters in determining
    whether a given dereference is greater than native size.  In particular,
    using loc->byte_size from a loc_address was telling us that 4 bytes is
    ok (sizeof pointer), even though the pointee was 8 total_bytes.
    
    * loc2c.c (discontiguify::pieces_small_enough): Compare total_bytes to
      the platform word size to decide whether to split into pieces.
      (discontiguify): For loc_constant, we have nothing to do as they're
      always copied byte-wise, but we should truncate the constant block to
      total_bytes.

commit 6b1ea8e3a28f6ce61164e4b35a48c3a77a7623c0
Author: Josh Stone <jistone@redhat.com>
Date:   Fri May 20 16:41:17 2011 -0700

    AUTHORS bump

commit cb034dff943fbd8eb93f9b137f7304b94fcceaa1
Author: Josh Stone <jistone@redhat.com>
Date:   Fri May 20 16:29:21 2011 -0700

    Let the @sum of an empty aggregate be 0
    
    It's handy to have a defined meaning for the @sum of empty aggregate, so
    one doesn't need to check for @count > 0 every time.  For example, now a
    pattern like "x += y; ... println(x)" can be more directly converted to
    aggregates with "x <<< y; ... println(@sum(x))".
    
    * translate.cxx (c_unparser::visit_stat_op): Let the @sum be read even
      on empty aggregates, but leaving the old behavior for compatibility.
    * testsuite/systemtap.maps/absentstats.exp: Check that both @count and
      @sum are allowed by default, and only @count for stap <= 1.4.
    * testsuite/systemtap.maps/ix_clear*.stp: Use @min for empty failure.

-----------------------------------------------------------------------

Summary of changes:
 AUTHORS                                  |    1 +
 loc2c.c                                  |   34 ++++++++---------------------
 testsuite/systemtap.maps/absentstats.exp |   23 +++++++++++++++++++-
 testsuite/systemtap.maps/absentstats.stp |   14 +++++++-----
 testsuite/systemtap.maps/ix_clear.stp    |    4 +-
 testsuite/systemtap.maps/ix_clear2.stp   |    4 +-
 testsuite/systemtap.maps/ix_clear3.stp   |    2 +-
 translate.cxx                            |    4 ++-
 8 files changed, 49 insertions(+), 37 deletions(-)


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