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e817bdd304
advanced copy optimization. This is the final step patch toward transforming: udiv r0, r0, r2 udiv r1, r1, r3 vmov.32 d16[0], r0 vmov.32 d16[1], r1 vmov r0, r1, d16 bx lr into: udiv r0, r0, r2 udiv r1, r1, r3 bx lr Indeed, thanks to this patch, this optimization is able to look through vmov.32 d16[0], r0 vmov.32 d16[1], r1 and is able to rewrite the following sequence: vmov.32 d16[0], r0 vmov.32 d16[1], r1 vmov r0, r1, d16 into simple generic GPR copies that the coalescer managed to remove. <rdar://problem/12702965> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216144 91177308-0d34-0410-b5e6-96231b3b80d8
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