[llvm] [SLP] Avoid -passes=instcombine stages in SLP tests (PR #146257)

[Alexey Bataev via llvm-commits]

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@@ -414,33 +416,127 @@ define i32 @reduce_blockstrided4x4(ptr nocapture noundef readonly %p1, i32 nound
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    [[IDX_EXT:%.*]] = sext i32 [[OFF1:%.*]] to i64
 ; CHECK-NEXT:    [[IDX_EXT63:%.*]] = sext i32 [[OFF2:%.*]] to i64
-; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds nuw i8, ptr [[P1:%.*]], i64 4
-; CHECK-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds nuw i8, ptr [[P2:%.*]], i64 4
+; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i8, ptr [[P1:%.*]], i64 4
+; CHECK-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds i8, ptr [[P2:%.*]], i64 4
 ; CHECK-NEXT:    [[ADD_PTR:%.*]] = getelementptr inbounds i8, ptr [[P1]], i64 [[IDX_EXT]]
 ; CHECK-NEXT:    [[ADD_PTR64:%.*]] = getelementptr inbounds i8, ptr [[P2]], i64 [[IDX_EXT63]]
-; CHECK-NEXT:    [[ARRAYIDX3_1:%.*]] = getelementptr inbounds nuw i8, ptr [[ADD_PTR]], i64 4
-; CHECK-NEXT:    [[ARRAYIDX5_1:%.*]] = getelementptr inbounds nuw i8, ptr [[ADD_PTR64]], i64 4
+; CHECK-NEXT:    [[ARRAYIDX3_1:%.*]] = getelementptr inbounds i8, ptr [[ADD_PTR]], i64 4
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alexey-bataev wrote:

Add a note that dead code must be removed

https://github.com/llvm/llvm-project/pull/146257