On 01/16/2013 09:26 AM, Uros Bizjak wrote:
2012-01-16 Uros Bizjak
PR target/55981
* config/i386/sync.md (atomic_store): Always generate SWImode
store through atomic_store_1.
(atomic_store_1): Macroize insn using SWI mode iterator.
testsuite/ChangeLog:
2012-01-1
Hello!
Using plain movdi pattern is not guaranteed to be atomic for all
operands. For x86_64, when storing DImode immediate outside SImode
range, the compiler splits the move into two separate SImode moves,
violating atomic assumptions.
Attached patch generates atomic store for all supported inpu
