Hal Finkel 5bbbb37ff2 Conservatively handle multiple MMOs in MIsNeedChainEdge ... MIsNeedChainEdge, which is used by -enable-aa-sched-mi (AA in misched), had an llvm_unreachable when -enable-aa-sched-mi is enabled and we reach an instruction with multiple MMOs. Instead, return a conservative answer. This allows testing -enable-aa-sched-mi on x86. Also, this moves the check above the isUnsafeMemoryObject checks. isUnsafeMemoryObject is currently correct only for instructions with one MMO (as noted in the comment in isUnsafeMemoryObject): // We purposefully do no check for hasOneMemOperand() here // in hope to trigger an assert downstream in order to // finish implementation. The problem with this is that, had the candidate edge passed the "!MIa->mayStore() && !MIb->mayStore()" check, the hoped-for assert would never happen (which could, in theory, lead to incorrect behavior if one of these secondary MMOs was volatile, for example). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198795 91177308-0d34-0410-b5e6-96231b3b80d8		2014-01-08 21:52:02 +00:00
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AArch64	Teach the DAGCombiner how to fold 'vselect' dag nodes according	2014-01-08 18:33:04 +00:00
ARM	ARM IAS: improve .eabi_attribute handling	2014-01-07 02:28:42 +00:00
CPP
Generic	Remove a failing test to get the buildbots back to green.	2014-01-06 00:43:09 +00:00
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X86	Conservatively handle multiple MMOs in MIsNeedChainEdge	2014-01-08 21:52:02 +00:00
XCore	XCore Target: correct callee save register spilling when callsUnwindInit is true.	2014-01-06 14:21:12 +00:00