llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-25 14:30:32 +00:00

History

Jakob Stoklund Olesen 36d29bc723 Remove extra MayLoad/MayStore flags from atomic_load/store. These extra flags are not required to properly order the atomic load/store instructions. SelectionDAGBuilder chains atomics as if they were volatile, and SelectionDAG::getAtomic() sets the isVolatile bit on the memory operands of all atomic operations. The volatile bit is enough to order atomic loads and stores during and after SelectionDAG. This means we set mayLoad on atomic_load, mayStore on atomic_store, and mayLoad+mayStore on the remaining atomic read-modify-write operations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162733 91177308-0d34-0410-b5e6-96231b3b80d8	2012-08-28 03:11:32 +00:00
..
llvm	Remove extra MayLoad/MayStore flags from atomic_load/store.	2012-08-28 03:11:32 +00:00
llvm-c	Change the `linker_private_weak_def_auto' linkage to` linkonce_odr_auto_hide' to	2012-08-17 18:33:14 +00:00

Jakob Stoklund Olesen 36d29bc723 Remove extra MayLoad/MayStore flags from atomic_load/store.

These extra flags are not required to properly order the atomic
load/store instructions. SelectionDAGBuilder chains atomics as if they
were volatile, and SelectionDAG::getAtomic() sets the isVolatile bit on
the memory operands of all atomic operations.

The volatile bit is enough to order atomic loads and stores during and
after SelectionDAG.

This means we set mayLoad on atomic_load, mayStore on atomic_store, and
mayLoad+mayStore on the remaining atomic read-modify-write operations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162733 91177308-0d34-0410-b5e6-96231b3b80d8

2012-08-28 03:11:32 +00:00

llvm Remove extra MayLoad/MayStore flags from atomic_load/store. 2012-08-28 03:11:32 +00:00

llvm-c Change the linker_private_weak_def_auto' linkage to linkonce_odr_auto_hide' to 2012-08-17 18:33:14 +00:00