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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=dse -S | FileCheck %s3 4target datalayout = "e-p:64:64:64"5 6declare void @free(ptr nocapture) allockind("free")7declare noalias ptr @malloc(i64) allockind("alloc,uninitialized")8 9define void @test(ptr %Q, ptr %P) {10; CHECK-LABEL: @test(11; CHECK-NEXT: tail call void @free(ptr [[P:%.*]]) [[ATTR0:#.*]]12; CHECK-NEXT: ret void13;14 %DEAD = load i32, ptr %Q ; <i32> [#uses=1]15 store i32 %DEAD, ptr %P16 tail call void @free(ptr %P) nounwind17 ret void18}19 20define void @test2(ptr %P) {21; CHECK-LABEL: @test2(22; CHECK-NEXT: tail call void @free(ptr [[P:%.*]]) [[ATTR0]]23; CHECK-NEXT: ret void24;25 %Q = getelementptr {i32, i32}, ptr %P, i32 0, i32 126 store i32 4, ptr %Q27 tail call void @free(ptr %P) nounwind28 ret void29}30 31define void @test3() {32; CHECK-LABEL: @test3(33; CHECK-NEXT: [[M:%.*]] = call ptr @malloc(i64 24)34; CHECK-NEXT: call void @free(ptr [[M]]) [[ATTR0]]35; CHECK-NEXT: ret void36;37 %m = call ptr @malloc(i64 24)38 store i8 0, ptr %m39 %m1 = getelementptr i8, ptr %m, i64 140 store i8 1, ptr %m141 call void @free(ptr %m) nounwind42 ret void43}44 45; PR1124046define void @test4(i1 %x) nounwind {47; CHECK-LABEL: @test4(48; CHECK-NEXT: entry:49; CHECK-NEXT: [[ALLOC1:%.*]] = tail call noalias ptr @malloc(i64 4) [[ATTR0]]50; CHECK-NEXT: br i1 [[X:%.*]], label [[SKIPINIT1:%.*]], label [[INIT1:%.*]]51; CHECK: init1:52; CHECK-NEXT: br label [[SKIPINIT1]]53; CHECK: skipinit1:54; CHECK-NEXT: tail call void @free(ptr [[ALLOC1]]) [[ATTR0]]55; CHECK-NEXT: ret void56;57entry:58 %alloc1 = tail call noalias ptr @malloc(i64 4) nounwind59 br i1 %x, label %skipinit1, label %init160 61init1:62 store i8 1, ptr %alloc163 br label %skipinit164 65skipinit1:66 tail call void @free(ptr %alloc1) nounwind67 ret void68}69 70define void @test5() {71; CHECK-LABEL: @test5(72; CHECK-NEXT: br label [[BB:%.*]]73; CHECK: bb:74; CHECK-NEXT: tail call void @free(ptr undef) [[ATTR0]]75; CHECK-NEXT: br label [[BB]]76;77 br label %bb78 79bb:80 tail call void @free(ptr undef) nounwind81 br label %bb82}83 84 85%struct = type { i32 , i32 }86 87; Test case inspired by PR48036.88define void @delete_field_after(ptr %ptr) {89;90; CHECK-LABEL: @delete_field_after(91; CHECK-NEXT: [[PTR_F0:%.*]] = getelementptr [[STRUCT:%.*]], ptr [[PTR:%.*]], i32 192; CHECK-NEXT: [[PTR_F1:%.*]] = getelementptr [[STRUCT]], ptr [[PTR]], i32 0, i32 193; CHECK-NEXT: store i32 0, ptr [[PTR_F1]], align 494; CHECK-NEXT: call void @free(ptr [[PTR_F0]])95; CHECK-NEXT: ret void96;97 %ptr.f0 = getelementptr %struct, ptr %ptr, i32 198 %ptr.f1 = getelementptr %struct, ptr %ptr, i32 0, i32 199 store i32 0, ptr %ptr.f1100 call void @free(ptr %ptr.f0)101 ret void102}103 104; Test case inspired by PR48036.105define void @delete_field_before(ptr %ptr) {106; CHECK-LABEL: @delete_field_before(107; CHECK-NEXT: call void @free(ptr [[PTR:%.*]])108; CHECK-NEXT: ret void109;110 %ptr.f1 = getelementptr %struct, ptr %ptr, i32 1, i32 1111 store i32 0, ptr %ptr.f1112 call void @free(ptr %ptr)113 ret void114}115