[PATCH] D48712: [X86] Lowering integer truncation intrinsics to native IR

[Craig Topper via Phabricator via cfe-commits]

craig.topper added inline comments.


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Comment at: clang/lib/Headers/avx512vlintrin.h:7421
+      __builtin_convertvector((__v4si)__A, __v4qi), (__v4qi){0, 0, 0, 0}, 0, 1,
+      2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7);
 }
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If you need to add more zeroes than the width of the input, can you just repeat the zero vector in order as many times as necessary. It should look more like a concatentation.

so 0, 1, 2, 3, 4, 5, 6, 7, 4, 5, 6, 7, 4, 5, 6, 7


https://reviews.llvm.org/D48712