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Commit 6fed1b7b authored by Craig Topper's avatar Craig Topper Committed by Hans Wennborg
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[X86] Disable copy elision in LowerMemArgument for scalarized vectors when the... 

[X86] Disable copy elision in LowerMemArgument for scalarized vectors when the loc VT is a different size than the original element.

For example a v4f16 argument is scalarized to 4 i32 values. So
the values are spread out instead of being packed tightly like
in the original vector.

Fixes PR47000.

(cherry picked from commit 08b2d0a9)
parent 5fc0afee
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