[llvm] [LV][EVL] Support interleaved access with tail folding by EVL (PR #152070)

[Mel Chen via llvm-commits]

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@@ -401,18 +401,13 @@ define void @gather_interleave_group_with_dead_insert_pos(i64 %N, ptr noalias %s
 ; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <vscale x 4 x i64> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
 ; CHECK-NEXT:    [[AVL:%.*]] = phi i64 [ [[TMP2]], %[[VECTOR_PH]] ], [ [[AVL_NEXT:%.*]], %[[VECTOR_BODY]] ]
 ; CHECK-NEXT:    [[TMP10:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[AVL]], i32 4, i1 true)
-; CHECK-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[TMP10]], i64 0
-; CHECK-NEXT:    [[BROADCAST_SPLAT2:%.*]] = shufflevector <vscale x 4 x i32> [[BROADCAST_SPLATINSERT1]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
 ; CHECK-NEXT:    [[TMP16:%.*]] = zext i32 [[TMP10]] to i64
 ; CHECK-NEXT:    [[TMP12:%.*]] = mul i64 2, [[TMP16]]
 ; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 4 x i64> poison, i64 [[TMP12]], i64 0
 ; CHECK-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <vscale x 4 x i64> [[DOTSPLATINSERT]], <vscale x 4 x i64> poison, <vscale x 4 x i32> zeroinitializer
-; CHECK-NEXT:    [[TMP13:%.*]] = call <vscale x 4 x i32> @llvm.stepvector.nxv4i32()
-; CHECK-NEXT:    [[TMP14:%.*]] = icmp ult <vscale x 4 x i32> [[TMP13]], [[BROADCAST_SPLAT2]]
 ; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = mul i64 [[EVL_BASED_IV]], 2
 ; CHECK-NEXT:    [[TMP22:%.*]] = getelementptr i8, ptr [[SRC]], i64 [[OFFSET_IDX]]
-; CHECK-NEXT:    [[INTERLEAVED_MASK:%.*]] = call <vscale x 8 x i1> @llvm.vector.interleave2.nxv8i1(<vscale x 4 x i1> [[TMP14]], <vscale x 4 x i1> [[TMP14]])
-; CHECK-NEXT:    [[WIDE_MASKED_VEC:%.*]] = call <vscale x 8 x i8> @llvm.masked.load.nxv8i8.p0(ptr [[TMP22]], i32 1, <vscale x 8 x i1> [[INTERLEAVED_MASK]], <vscale x 8 x i8> poison)
+; CHECK-NEXT:    [[WIDE_MASKED_VEC:%.*]] = call <vscale x 8 x i8> @llvm.vp.load.nxv8i8.p0(ptr align 1 [[TMP22]], <vscale x 8 x i1> splat (i1 true), i32 [[TMP10]])
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Mel-Chen wrote:

Oh, my bad, I missed it. You are right, we need a multiplication here. Thank you for your correction.
b06b5abc498478ec265f2cc1ae8533e153a1dfca

https://github.com/llvm/llvm-project/pull/152070