Dan Gohman 2644d74bc2 [WebAssembly] Improve the precision of memory and side effect dependence tracking. ...

MachineInstr::isSafeToMove is more conservative than is needed here;
use a more explicit check, and incorporate knowledge of some
WebAssembly-specific opcodes.

llvm-svn: 269736

2016-05-17 04:05:31 +00:00

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