Most of our loads and stores are atomic when done on aligned operands.
This patch series cleans up our handling of that a little bit, and makes
us handle a few more cases.
The lwa_operand one has a testcase, which is how I noticed this could
use some improvement. Looking at the combine dump for that shows
input_operand isn't handled properly, either. And finally there is
offsettable_mem_operand as well. I didn't see any other memory
operands we should handle as volatile as well, but who knows :-)
Tested on powerpc64-linux {-m32,-m64}; committing to trunk.
Segher
Segher Boessenkool (4):
rs6000: New predicate any_memory_operand
rs6000: Make lwa_operand use any_memory_operand
rs6000: Make input_operand use any_memory_operand
rs6000: Make offsettable_mem_operand use any_memory_operand
gcc/config/rs6000/predicates.md | 22 +++++++++++++---------
gcc/testsuite/gcc.target/powerpc/volatile-mem.c | 16 ++++++++++++++++
2 files changed, 29 insertions(+), 9 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/powerpc/volatile-mem.c
--
1.8.3.1
