3 Commits

Author SHA1 Message Date
James Molloy
aada52189e [AArch64] Redundant store instructions should be removed as dead code
If there is a store followed by a store with the same value to the same location, then the store is dead/noop. It can be removed.

This problem is found in spec2006-197.parser.

For example,
  stur    w10, [x11, #-4]
  stur    w10, [x11, #-4]
Then one of the two stur instructions can be removed.

Patch by David Xu!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218569 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-27 17:02:54 +00:00
David Xu
abf5bf221f Revert patch of r218493, delete the test case
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218495 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-26 02:40:54 +00:00
David Xu
c41ae2a5c4 Redundant store instructions should be removed as dead code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218493 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-26 02:02:09 +00:00