[PATCH] D38714: [AVX512] Don't mark EXTLOAD as legal with AVX512. Continue using custom lowering.

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


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Comment at: test/CodeGen/X86/avx512-shuffles/broadcast-vector-int.ll:345
 ; CHECK-NEXT:    kmovw %eax, %k1
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 {%k1} {z} = xmm0[0,2,0,2]
+; CHECK-NEXT:    vbroadcasti32x2 (%rdi), %xmm0 {%k1} {z}
 ; CHECK-NEXT:    retq
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delena wrote:
> load {a0, a1}
> %shuf = { a0, a1, a0, a1}
> %res = { a0, 0, 0, 0, 0}
> - can we do the same with one "vmovd" instruction ?
This test is trying to test broadcasts, the fact the test was using a constant mask is a test problem which I've fixed in r315848


https://reviews.llvm.org/D38714