1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 2; RUN: opt -passes=newgvn -disable-output < %s 3 4; PR5631 5 6target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 7target triple = "x86_64-apple-darwin10.0" 8 9define ptr @test1(ptr %name, i32 %namelen, ptr %o, i32 %expected_type, i1 %arg) nounwind ssp { 10entry: 11 br i1 %arg, label %if.end13, label %while.body.preheader 12 13 14if.end13: ; preds = %if.then6 15 br label %while.body.preheader 16 17while.body.preheader: ; preds = %if.end13, %if.end 18 br label %while.body 19 20while.body: ; preds = %while.body.backedge, %while.body.preheader 21 %o.addr.0 = phi ptr [ undef, %while.body.preheader ], [ %o.addr.0.be, %while.body.backedge ] ; <ptr> [#uses=2] 22 br i1 false, label %return.loopexit, label %lor.lhs.false 23 24lor.lhs.false: ; preds = %while.body 25 %tmp22 = load i32, ptr %o.addr.0 ; <i32> [#uses=0] 26 br i1 %arg, label %land.lhs.true24, label %if.end31 27 28land.lhs.true24: ; preds = %lor.lhs.false 29 %call28 = call ptr @parse_object(ptr undef) nounwind ; <ptr> [#uses=0] 30 br i1 %arg, label %return.loopexit, label %if.end31 31 32if.end31: ; preds = %land.lhs.true24, %lor.lhs.false 33 br i1 %arg, label %return.loopexit, label %if.end41 34 35if.end41: ; preds = %if.end31 36 %tmp45 = load i32, ptr %o.addr.0 ; <i32> [#uses=0] 37 br i1 %arg, label %if.then50, label %if.else 38 39if.then50: ; preds = %if.end41 40 %tmp53 = load ptr, ptr undef ; <ptr> [#uses=1] 41 br label %while.body.backedge 42 43if.else: ; preds = %if.end41 44 br i1 %arg, label %if.then62, label %if.else67 45 46if.then62: ; preds = %if.else 47 br label %while.body.backedge 48 49while.body.backedge: ; preds = %if.then62, %if.then50 50 %o.addr.0.be = phi ptr [ %tmp53, %if.then50 ], [ undef, %if.then62 ] ; <ptr> [#uses=1] 51 br label %while.body 52 53if.else67: ; preds = %if.else 54 ret ptr null 55 56return.loopexit: ; preds = %if.end31, %land.lhs.true24, %while.body 57 ret ptr undef 58} 59 60declare ptr @parse_object(ptr) 61 62 63 64 65 66 67%struct.attribute_spec = type { ptr, i32, i32, i8, i8, i8 } 68 69@attribute_tables = external global [4 x ptr] ; <ptr> [#uses=2] 70 71define void @test2() nounwind { 72entry: 73 br label %bb69.i 74 75bb69.i: ; preds = %bb57.i.preheader 76 %tmp4 = getelementptr inbounds [4 x ptr], ptr @attribute_tables, i32 0, i32 undef ; <ptr> [#uses=1] 77 %tmp3 = load ptr, ptr %tmp4, align 4 ; <ptr> [#uses=1] 78 br label %bb65.i 79 80bb65.i: ; preds = %bb65.i.preheader, %bb64.i 81 %storemerge6.i = phi i32 [ 1, %bb64.i ], [ 0, %bb69.i ] ; <i32> [#uses=3] 82 %scevgep14 = getelementptr inbounds %struct.attribute_spec, ptr %tmp3, i32 %storemerge6.i, i32 0 ; <ptr> [#uses=1] 83 %tmp2 = load ptr, ptr %scevgep14, align 4 ; <ptr> [#uses=0] 84 %tmp = load ptr, ptr %tmp4, align 4 ; <ptr> [#uses=1] 85 %scevgep1516 = getelementptr inbounds %struct.attribute_spec, ptr %tmp, i32 %storemerge6.i, i32 0 ; <ptr> [#uses=0] 86 unreachable 87 88bb64.i: ; Unreachable 89 br label %bb65.i 90 91bb66.i: ; Unreachable 92 br label %bb69.i 93} 94 95 96 97; rdar://7438974 98 99@g = external global i64, align 8 100 101define ptr @test3(i1 %arg) { 102do.end17.i: 103 %tmp18.i = load ptr, ptr undef 104 br i1 %arg, label %do.body36.i, label %if.then21.i 105 106if.then21.i: 107 ret ptr undef 108 109do.body36.i: 110 %ivar38.i = load i64, ptr @g 111 %add.ptr39.sum.i = add i64 %ivar38.i, 8 112 %tmp40.i = getelementptr inbounds i8, ptr %tmp18.i, i64 %add.ptr39.sum.i 113 %tmp41.i = load i64, ptr %tmp40.i 114 br i1 %arg, label %if.then48.i, label %do.body57.i 115 116if.then48.i: 117 %call54.i = call i32 @foo2() 118 br label %do.body57.i 119 120do.body57.i: 121 %tmp58.i = load ptr, ptr undef 122 %ivar59.i = load i64, ptr @g 123 %add.ptr65.sum.i = add i64 %ivar59.i, 8 124 %tmp66.i = getelementptr inbounds i8, ptr %tmp58.i, i64 %add.ptr65.sum.i 125 %tmp67.i = load i64, ptr %tmp66.i 126 ret ptr undef 127} 128 129declare i32 @foo2() 130 131 132 133define i32 @test4() { 134entry: 135 ret i32 0 136 137dead: 138 %P2 = getelementptr i32, ptr %P2, i32 52 139 %Q2 = getelementptr i32, ptr %Q2, i32 52 140 store i32 4, ptr %P2 141 %A = load i32, ptr %Q2 142 br i1 true, label %dead, label %dead2 143 144dead2: 145 ret i32 %A 146} 147 148 149; PR9841 150define fastcc i8 @test5(ptr %P) nounwind { 151entry: 152 %0 = load i8, ptr %P, align 2 153 154 %Q = getelementptr i8, ptr %P, i32 1 155 %1 = load i8, ptr %Q, align 1 156 ret i8 %1 157} 158 159 160; Test that a GEP in an unreachable block with the following form doesn't crash 161; GVN: 162; 163; %x = gep %some.type %x, ... 164 165%struct.type = type { i64, i32, i32 } 166 167define fastcc void @func(i1 %arg) nounwind uwtable ssp align 2 { 168entry: 169 br label %reachable.bb 170 171;; Unreachable code. 172 173unreachable.bb: 174 %gep.val = getelementptr inbounds %struct.type, ptr %gep.val, i64 1 175 br i1 %arg, label %u2.bb, label %u1.bb 176 177u1.bb: 178 store i64 -1, ptr %gep.val, align 8 179 br label %unreachable.bb 180 181u2.bb: 182 %0 = load i32, ptr undef, align 4 183 %conv.i.i.i.i.i = zext i32 %0 to i64 184 br label %u2.bb 185 186;; Reachable code. 187 188reachable.bb: 189 br label %r1.bb 190 191r1.bb: 192 br label %u2.bb 193} 194