[PATCH 0/4] phisrc fixes

[Luc Van Oostenryck <luc.vanoostenryck@gmail.com>]

This series fixes problems with the creation and placement of phisrcs.

Patch 1 is a preparatory step for patch 4 but fixes a very problem
of its own.
Patch 2 & 3 are the main fixes.
Patch 4 is a small improvement but also avoid divergence in the code
regarding the changes made in patch 3.

Note: I'm very sure there is still others bugs in the same corner but
      at least these patch improve the situation a bit.
Note: Only one patch has a regression test. For the other 3, it's
      to have some examples but this doesn't fit very well into the current
      testsuite.
      
This serie can also be found on the 'sent/broken-phisrc' of
	git://github.com/lucvoo/sparse.git

Luc Van Oostenryck (4):
  volatile loads must not be simplified
  fix superfluous phisrc
  fix phisrc mixup
  missing load simplification

 flow.c                       | 23 ++++++++++++++++-------
 memops.c                     | 13 ++++++-------
 validation/memops-volatile.c | 21 +++++++++++++++++++++
 3 files changed, 43 insertions(+), 14 deletions(-)
 create mode 100644 validation/memops-volatile.c