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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CodeGen	Conservatively handle multiple MMOs in MIsNeedChainEdge	2014-01-08 21:52:02 +00:00
DebugInfo	Emit arange padding with a single directive.	2014-01-07 19:28:14 +00:00
ExecutionEngine	Add missing test case for r198737.	2014-01-08 16:31:16 +00:00
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MC	[AArch64][NEON] Added UXTL and UXTL2 instruction aliases	2014-01-08 21:02:13 +00:00
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tools	tests: disable ARM unwinding tests if ARM is unavailable	2014-01-08 03:44:01 +00:00
Transforms	Fix a bug about generating undef operand when optimising shuffle vector and insert element in instruction combine.	2014-01-08 03:06:15 +00:00
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