[llvm] [VPlan] Run removeDeadRecipes early. (PR #190191)

[Florian Hahn via llvm-commits]

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@@ -1058,9 +1058,14 @@ define void @pointer_iv_non_uniform_0(ptr %a, i64 %n) {
 ; INTER-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <16 x i32> [[WIDE_VEC]], <16 x i32> poison, <4 x i32> <i32 0, i32 4, i32 8, i32 12>
 ; INTER-NEXT:    [[STRIDED_VEC4:%.*]] = shufflevector <16 x i32> [[WIDE_VEC]], <16 x i32> poison, <4 x i32> <i32 1, i32 5, i32 9, i32 13>
 ; INTER-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[NEXT_GEP]], i32 4
-; INTER-NEXT:    [[WIDE_VEC5:%.*]] = load <16 x i32>, ptr [[TMP7]], align 8
-; INTER-NEXT:    [[STRIDED_VEC6:%.*]] = shufflevector <16 x i32> [[WIDE_VEC5]], <16 x i32> poison, <4 x i32> <i32 0, i32 4, i32 8, i32 12>
-; INTER-NEXT:    [[STRIDED_VEC7:%.*]] = shufflevector <16 x i32> [[WIDE_VEC5]], <16 x i32> poison, <4 x i32> <i32 1, i32 5, i32 9, i32 13>
+; INTER-NEXT:    [[TMP28:%.*]] = getelementptr inbounds i32, ptr [[NEXT_GEP1]], i32 4
+; INTER-NEXT:    [[TMP29:%.*]] = getelementptr inbounds i32, ptr [[NEXT_GEP2]], i32 4
+; INTER-NEXT:    [[TMP30:%.*]] = getelementptr inbounds i32, ptr [[NEXT_GEP3]], i32 4
+; INTER-NEXT:    [[TMP31:%.*]] = insertelement <4 x ptr> poison, ptr [[TMP7]], i32 0
+; INTER-NEXT:    [[TMP32:%.*]] = insertelement <4 x ptr> [[TMP31]], ptr [[TMP28]], i32 1
+; INTER-NEXT:    [[TMP33:%.*]] = insertelement <4 x ptr> [[TMP32]], ptr [[TMP29]], i32 2
+; INTER-NEXT:    [[TMP34:%.*]] = insertelement <4 x ptr> [[TMP33]], ptr [[TMP30]], i32 3
+; INTER-NEXT:    [[STRIDED_VEC6:%.*]] = call <4 x i32> @llvm.masked.gather.v4i32.v4p0(<4 x ptr> align 8 [[TMP34]], <4 x i1> splat (i1 true), <4 x i32> poison)
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fhahn wrote:

Thisi s the same issue as https://github.com/llvm/llvm-project/pull/190191/changes#r3167427598, we fail to form an interleave group becase a member was unsued

https://github.com/llvm/llvm-project/pull/190191