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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=dse -enable-dse-partial-store-merging=false -S | FileCheck %s3target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"4 5; Ensure that the dead store is deleted in this case. It is wholely6; overwritten by the second store.7define void @test1(ptr %V) {8; CHECK-LABEL: @test1(9; CHECK-NEXT: store i32 1234567, ptr [[V:%.*]], align 410; CHECK-NEXT: ret void11;12 store i8 0, ptr %V13 store i32 1234567, ptr %V14 ret void15}16 17; Note that we could do better by merging the two stores into one.18define void @test2(ptr %P) {19; CHECK-LABEL: @test2(20; CHECK-NEXT: store i32 0, ptr [[P:%.*]], align 421; CHECK-NEXT: store i16 1, ptr [[P]], align 222; CHECK-NEXT: ret void23;24 store i32 0, ptr %P25 store i16 1, ptr %P26 ret void27}28 29 30define i32 @test3(double %__x) {31; CHECK-LABEL: @test3(32; CHECK-NEXT: [[__U:%.*]] = alloca { [3 x i32] }, align 433; CHECK-NEXT: store double [[__X:%.*]], ptr [[__U]], align 834; CHECK-NEXT: [[TMP_4:%.*]] = getelementptr { [3 x i32] }, ptr [[__U]], i32 0, i32 0, i32 135; CHECK-NEXT: [[TMP_5:%.*]] = load i32, ptr [[TMP_4]], align 436; CHECK-NEXT: [[TMP_6:%.*]] = icmp slt i32 [[TMP_5]], 037; CHECK-NEXT: [[TMP_7:%.*]] = zext i1 [[TMP_6]] to i3238; CHECK-NEXT: ret i32 [[TMP_7]]39;40 %__u = alloca { [3 x i32] }41 store double %__x, ptr %__u42 %tmp.4 = getelementptr { [3 x i32] }, ptr %__u, i32 0, i32 0, i32 143 %tmp.5 = load i32, ptr %tmp.444 %tmp.6 = icmp slt i32 %tmp.5, 045 %tmp.7 = zext i1 %tmp.6 to i3246 ret i32 %tmp.747}48 49; PR604350define void @test4(ptr %P) {51; CHECK-LABEL: @test4(52; CHECK-NEXT: store double 0.000000e+00, ptr [[P:%.*]], align 853; CHECK-NEXT: ret void54;55 56 store i8 19, ptr %P ;; dead57 %A = getelementptr i8, ptr %P, i32 358 59 store i8 42, ptr %A ;; dead60 61 store double 0.0, ptr %P62 ret void63}64 65; PR865766declare void @test5a(ptr)67define void @test5(i32 %i) nounwind ssp {68; CHECK-LABEL: @test5(69; CHECK-NEXT: [[A:%.*]] = alloca i32, align 470; CHECK-NEXT: store i32 20, ptr [[A]], align 471; CHECK-NEXT: call void @test5a(ptr [[A]])72; CHECK-NEXT: ret void73;74 %A = alloca i3275 %C = getelementptr i8, ptr %A, i32 %i76 store i8 10, ptr %C ;; Dead store to variable index.77 store i32 20, ptr %A78 79 call void @test5a(ptr %A)80 ret void81}82 83declare void @test5a_as1(ptr)84define void @test5_addrspacecast(i32 %i) nounwind ssp {85; CHECK-LABEL: @test5_addrspacecast(86; CHECK-NEXT: [[A:%.*]] = alloca i32, align 487; CHECK-NEXT: store i32 20, ptr [[A]], align 488; CHECK-NEXT: call void @test5a(ptr [[A]])89; CHECK-NEXT: ret void90;91 %A = alloca i3292 %B = addrspacecast ptr %A to ptr addrspace(1)93 %C = getelementptr i8, ptr addrspace(1) %B, i32 %i94 store i8 10, ptr addrspace(1) %C ;; Dead store to variable index.95 store i32 20, ptr %A96 97 call void @test5a(ptr %A)98 ret void99}100