[PATCH] D44269: [X86] Remove sse41 specific code from lowering v16i8 multiply

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


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Comment at: test/CodeGen/X86/vector-mul.ll:968
+; X86-NEXT:    movdqa {{.*#+}} xmm2 = [0,1,3,7,15,31,63,127,0,1,3,7,15,31,63,127]
+; X86-NEXT:    punpckhbw {{.*#+}} xmm2 = xmm2[8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15]
+; X86-NEXT:    pmovzxbw {{.*#+}} xmm1 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero
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Why wasn't this constant folded?


https://reviews.llvm.org/D44269