[llvm] [VPlan] Support scalable VFs in narrowInterleaveGroups. (PR #154842)

[Florian Hahn via llvm-commits]

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@@ -16,18 +16,15 @@ define void @load_store_interleave_group(ptr noalias %data) {
 ; CHECK-NEXT:    [[TMP3:%.*]] = mul nuw i64 [[TMP2]], 2
 ; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 100, [[TMP3]]
 ; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 100, [[N_MOD_VF]]
+; CHECK-NEXT:    [[TMP6:%.*]] = call i64 @llvm.vscale.i64()
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fhahn wrote:

Yep, the minimum iteration check could be improved. This should now be do-able as we create the minimum iteration check directly in VPlan (when not vectorizing the epilogue). I can check separately.

https://github.com/llvm/llvm-project/pull/154842