[llvm] select m, sub/add(X, C), X --> sub/add (X, and(C, m)) (PR #82441)

[Simon Pilgrim via llvm-commits]

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@@ -22,7 +22,7 @@ define <2 x i64> @masked_select_const(<2 x i64> %a, <2 x i64> %x, <2 x i64> %y)
 ; SSE41-LABEL: masked_select_const:
 ; SSE41:       # %bb.0:
 ; SSE41-NEXT:    movdqa %xmm0, %xmm3
-; SSE41-NEXT:    movdqa {{.*#+}} xmm4 = [4294967272,4294967272,4294967272,4294967272]
+; SSE41-NEXT:    pmovsxbd {{.*#+}} xmm4 = [4294967272,4294967272,4294967272,4294967272]
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RKSimon wrote:

The base commit with the tests needs rebasing (and regenerating) on trunk first

https://github.com/llvm/llvm-project/pull/82441