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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes=gvn -S %s | FileCheck %s3 4; Reduced test case from5; https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=242786 7; Make sure we do not crash when dealing with a vector constant expression.8define <4 x ptr> @test(ptr %ptr) null_pointer_is_valid {9; CHECK-LABEL: @test(10; CHECK-NEXT: entry:11; CHECK-NEXT: [[L3:%.*]] = load i64, ptr [[PTR:%.*]], align 412; CHECK-NEXT: [[I6:%.*]] = insertelement <4 x ptr> getelementptr inbounds (i64, ptr null, <4 x i64> <i64 poison, i64 poison, i64 poison, i64 -128>), ptr undef, i64 [[L3]]13; CHECK-NEXT: ret <4 x ptr> [[I6]]14;15entry:16 %B9 = sdiv i16 -32768, 25617 %L3 = load i64, ptr %ptr, align 418 %B3 = sub i16 0, %B919 %0 = insertelement <4 x i16> poison, i16 %B3, i32 320 %1 = sub <4 x i16> zeroinitializer, %021 %2 = sext <4 x i16> %1 to <4 x i32>22 %3 = getelementptr inbounds i64, ptr null, <4 x i32> %223 %I6 = insertelement <4 x ptr> %3, ptr undef, i64 %L324 ret <4 x ptr> %I625}26