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archived-llvm/test/CodeGen/AArch64
Jessica Paquette 2ee5a85229 [GlobalISel][AArch64] Use getConstantVRegValWithLookThrough for extracts
getConstantVRegValWithLookThrough does the same thing as the
getConstantValueForReg function, and has more visibility across GISel. Plus, it
supports looking through G_TRUNC, G_SEXT, and G_ZEXT. So, we get better code
reuse and more functionality for free by using it.

Add some test cases to select-extract-vector-elt.mir to show that we can now
look through those instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@359351 91177308-0d34-0410-b5e6-96231b3b80d8
2019-04-26 21:53:13 +00:00
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