Commit 228a2bc9 authored by Craig Topper's avatar Craig Topper
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[X86] Teach combineCVTPH2PS to shrink v8i16 loads when the output type is... 

[X86] Teach combineCVTPH2PS to shrink v8i16 loads when the output type is v4f32. Remove extra isel patterns.

Similar to what do for other operations that use a subset of bits.
Allows us to remove a pattern that shrinks a load. Which was
incorrect if the load was volatile.
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