1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -rewrite-statepoints-for-gc -S 2>&1 | FileCheck %s 3; RUN: opt < %s -passes=rewrite-statepoints-for-gc -S 2>&1 | FileCheck %s 4 5; A collection of tests for exercising the base inference logic in the 6; findBasePointers. That is, the logic which proves a potentially derived 7; pointer is actually a base pointer itself. 8 9define i8 addrspace(1)* @test(i8 addrspace(1)* %a) gc "statepoint-example" { 10; CHECK-LABEL: @test( 11; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[A:%.*]]) ] 12; CHECK-NEXT: [[A_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 13; CHECK-NEXT: ret i8 addrspace(1)* [[A_RELOCATED]] 14; 15 call void @foo() 16 ret i8 addrspace(1)* %a 17} 18 19define i8 addrspace(1)* @test_select(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" { 20; CHECK-LABEL: @test_select( 21; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C:%.*]], i8 addrspace(1)* [[A1:%.*]], i8 addrspace(1)* [[A2:%.*]] 22; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[SEL]]) ] 23; CHECK-NEXT: [[SEL_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 24; CHECK-NEXT: ret i8 addrspace(1)* [[SEL_RELOCATED]] 25; 26 %sel = select i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2 27 call void @foo() 28 ret i8 addrspace(1)* %sel 29} 30 31define i8 addrspace(1)* @test_phi1(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" { 32; CHECK-LABEL: @test_phi1( 33; CHECK-NEXT: entry: 34; CHECK-NEXT: br i1 [[C:%.*]], label [[TAKEN:%.*]], label [[UNTAKEN:%.*]] 35; CHECK: taken: 36; CHECK-NEXT: br label [[MERGE:%.*]] 37; CHECK: untaken: 38; CHECK-NEXT: br label [[MERGE]] 39; CHECK: merge: 40; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[A1:%.*]], [[TAKEN]] ], [ [[A2:%.*]], [[UNTAKEN]] ] 41; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]]) ] 42; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 43; CHECK-NEXT: ret i8 addrspace(1)* [[PHI_RELOCATED]] 44; 45entry: 46 br i1 %c, label %taken, label %untaken 47taken: 48 br label %merge 49untaken: 50 br label %merge 51merge: 52 %phi = phi i8 addrspace(1)* [%a1, %taken], [%a2, %untaken] 53 call void @foo() 54 ret i8 addrspace(1)* %phi 55} 56 57define i8 addrspace(1)* @test_phi_lcssa(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" { 58; CHECK-LABEL: @test_phi_lcssa( 59; CHECK-NEXT: entry: 60; CHECK-NEXT: br label [[MERGE:%.*]] 61; CHECK: merge: 62; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[A1:%.*]]) ] 63; CHECK-NEXT: [[A1_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 64; CHECK-NEXT: ret i8 addrspace(1)* [[A1_RELOCATED]] 65; 66entry: 67 br label %merge 68merge: 69 %phi = phi i8 addrspace(1)* [%a1, %entry] 70 call void @foo() 71 ret i8 addrspace(1)* %phi 72} 73 74 75define i8 addrspace(1)* @test_loop1(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" { 76; CHECK-LABEL: @test_loop1( 77; CHECK-NEXT: entry: 78; CHECK-NEXT: br label [[LOOP:%.*]] 79; CHECK: loop: 80; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[A1:%.*]], [[ENTRY:%.*]] ], [ [[A2:%.*]], [[LOOP]] ] 81; CHECK-NEXT: br i1 [[C:%.*]], label [[EXIT:%.*]], label [[LOOP]] 82; CHECK: exit: 83; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]]) ] 84; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 85; CHECK-NEXT: ret i8 addrspace(1)* [[PHI_RELOCATED]] 86; 87entry: 88 br label %loop 89loop: 90 %phi = phi i8 addrspace(1)* [%a1, %entry], [%a2, %loop] 91 br i1 %c, label %exit, label %loop 92exit: 93 %phi2 = phi i8 addrspace(1)* [%phi, %loop] 94 call void @foo() 95 ret i8 addrspace(1)* %phi2 96} 97 98define i8 addrspace(1)* @test_loop2(i1 %c, i8 addrspace(1)* %a1) gc "statepoint-example" { 99; CHECK-LABEL: @test_loop2( 100; CHECK-NEXT: entry: 101; CHECK-NEXT: br label [[LOOP:%.*]] 102; CHECK: loop: 103; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[A1:%.*]], [[ENTRY:%.*]] ], [ [[O2:%.*]], [[LOOP]] ] 104; CHECK-NEXT: [[ADDR:%.*]] = bitcast i8 addrspace(1)* [[PHI]] to i8 addrspace(1)* addrspace(1)* 105; CHECK-NEXT: [[O2]] = load i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[ADDR]], align 8 106; CHECK-NEXT: br i1 [[C:%.*]], label [[EXIT:%.*]], label [[LOOP]] 107; CHECK: exit: 108; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]]) ] 109; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 110; CHECK-NEXT: ret i8 addrspace(1)* [[PHI_RELOCATED]] 111; 112entry: 113 br label %loop 114loop: 115 %phi = phi i8 addrspace(1)* [%a1, %entry], [%o2, %loop] 116 %addr = bitcast i8 addrspace(1)* %phi to i8 addrspace(1)* addrspace(1)* 117 %o2 = load i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* %addr 118 br i1 %c, label %exit, label %loop 119exit: 120 %phi2 = phi i8 addrspace(1)* [%phi, %loop] 121 call void @foo() 122 ret i8 addrspace(1)* %phi2 123} 124 125; %phi1 and phi2 are not base pointers, but they do have a single 126; base pointer which is %a1 127define i8 addrspace(1)* @test_loop3(i1 %c, i8 addrspace(1)* %a1) gc "statepoint-example" { 128; CHECK-LABEL: @test_loop3( 129; CHECK-NEXT: entry: 130; CHECK-NEXT: br label [[LOOP:%.*]] 131; CHECK: loop: 132; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[A1:%.*]], [[ENTRY:%.*]] ], [ [[GEP:%.*]], [[LOOP]] ] 133; CHECK-NEXT: [[GEP]] = getelementptr i8, i8 addrspace(1)* [[PHI]], i64 16 134; CHECK-NEXT: br i1 [[C:%.*]], label [[EXIT:%.*]], label [[LOOP]] 135; CHECK: exit: 136; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]], i8 addrspace(1)* [[A1]]) ] 137; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0) 138; CHECK-NEXT: [[A1_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1) 139; CHECK-NEXT: ret i8 addrspace(1)* [[PHI_RELOCATED]] 140; 141entry: 142 br label %loop 143loop: 144 %phi = phi i8 addrspace(1)* [%a1, %entry], [%gep, %loop] 145 %gep = getelementptr i8, i8 addrspace(1)* %phi, i64 16 146 br i1 %c, label %exit, label %loop 147exit: 148 %phi2 = phi i8 addrspace(1)* [%phi, %loop] 149 call void @foo() 150 ret i8 addrspace(1)* %phi2 151} 152 153define <2 x i8 addrspace(1)*> @test_vec_passthrough(<2 x i8 addrspace(1)*> %a) gc "statepoint-example" { 154; CHECK-LABEL: @test_vec_passthrough( 155; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[A:%.*]]) ] 156; CHECK-NEXT: [[A_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 157; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[A_RELOCATED]] 158; 159 call void @foo() 160 ret <2 x i8 addrspace(1)*> %a 161} 162 163 164define <2 x i8 addrspace(1)*> @test_insert(i8 addrspace(1)* %a) gc "statepoint-example" { 165; CHECK-LABEL: @test_insert( 166; CHECK-NEXT: [[VEC:%.*]] = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* [[A:%.*]], i64 0 167; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[VEC]]) ] 168; CHECK-NEXT: [[VEC_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 169; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[VEC_RELOCATED]] 170; 171 %vec = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* %a, i64 0 172 call void @foo() 173 ret <2 x i8 addrspace(1)*> %vec 174} 175 176define i8 addrspace(1)* @test_extract(<2 x i8 addrspace(1)*> %a) gc "statepoint-example" { 177; CHECK-LABEL: @test_extract( 178; CHECK-NEXT: [[EE:%.*]] = extractelement <2 x i8 addrspace(1)*> [[A:%.*]], i64 0 179; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[EE]]) ] 180; CHECK-NEXT: [[EE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 181; CHECK-NEXT: ret i8 addrspace(1)* [[EE_RELOCATED]] 182; 183 %ee = extractelement <2 x i8 addrspace(1)*> %a, i64 0 184 call void @foo() 185 ret i8 addrspace(1)* %ee 186} 187 188define <2 x i8 addrspace(1)*> @test_shuffle(<2 x i8 addrspace(1)*> %a1) gc "statepoint-example" { 189; CHECK-LABEL: @test_shuffle( 190; CHECK-NEXT: [[RES:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[A1:%.*]], <2 x i8 addrspace(1)*> [[A1]], <2 x i32> zeroinitializer 191; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[RES]]) ] 192; CHECK-NEXT: [[RES_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 193; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[RES_RELOCATED]] 194; 195 %res = shufflevector <2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a1, <2 x i32> zeroinitializer 196 call void @foo() 197 ret <2 x i8 addrspace(1)*> %res 198} 199 200define <2 x i8 addrspace(1)*> @test_shuffle2(<2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a2) gc "statepoint-example" { 201; CHECK-LABEL: @test_shuffle2( 202; CHECK-NEXT: [[RES:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[A1:%.*]], <2 x i8 addrspace(1)*> [[A2:%.*]], <2 x i32> zeroinitializer 203; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[RES]]) ] 204; CHECK-NEXT: [[RES_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 205; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[RES_RELOCATED]] 206; 207 %res = shufflevector <2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a2, <2 x i32> zeroinitializer 208 call void @foo() 209 ret <2 x i8 addrspace(1)*> %res 210} 211 212define <4 x i8 addrspace(1)*> @test_shuffle_concat(<2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a2) gc "statepoint-example" { 213; CHECK-LABEL: @test_shuffle_concat( 214; CHECK-NEXT: [[RES:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[A1:%.*]], <2 x i8 addrspace(1)*> [[A2:%.*]], <4 x i32> <i32 0, i32 1, i32 2, i32 3> 215; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<4 x i8 addrspace(1)*> [[RES]]) ] 216; CHECK-NEXT: [[RES_RELOCATED:%.*]] = call coldcc <4 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v4p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 217; CHECK-NEXT: ret <4 x i8 addrspace(1)*> [[RES_RELOCATED]] 218; 219 %res = shufflevector <2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a2, <4 x i32> <i32 0, i32 1, i32 2, i32 3> 220 call void @foo() 221 ret <4 x i8 addrspace(1)*> %res 222} 223 224; TODO: Special case worth handling - we interpret the shuffle as if we need 225; to select the base pointers from either input when the mask is known. 226define <2 x i8 addrspace(1)*> @test_shuffle_broadcast(i8 addrspace(1)* %a) gc "statepoint-example" { 227; CHECK-LABEL: @test_shuffle_broadcast( 228; CHECK-NEXT: entry: 229; CHECK-NEXT: [[IE:%.*]] = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* [[A:%.*]], i64 0 230; CHECK-NEXT: [[BROADCAST:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[IE]], <2 x i8 addrspace(1)*> undef, <2 x i32> zeroinitializer 231; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[BROADCAST]]) ] 232; CHECK-NEXT: [[BROADCAST_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 233; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[BROADCAST_RELOCATED]] 234; 235entry: 236 %ie = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* %a, i64 0 237 %broadcast = shufflevector <2 x i8 addrspace(1)*> %ie, <2 x i8 addrspace(1)*> undef, <2 x i32> zeroinitializer 238 call void @foo() 239 ret <2 x i8 addrspace(1)*> %broadcast 240} 241 242; Show a case where only a portion of the sub-graph propagates base pointers. 243define i8 @test_subgraph(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" { 244; CHECK-LABEL: @test_subgraph( 245; CHECK-NEXT: entry: 246; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C:%.*]], i8 addrspace(1)* [[A1:%.*]], i8 addrspace(1)* [[A2:%.*]] 247; CHECK-NEXT: br i1 [[C]], label [[TAKEN:%.*]], label [[MERGE:%.*]] 248; CHECK: taken: 249; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, i8 addrspace(1)* [[SEL]], i64 8 250; CHECK-NEXT: br label [[MERGE]] 251; CHECK: merge: 252; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[GEP]], [[TAKEN]] ], [ [[SEL]], [[ENTRY:%.*]] ] 253; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]], i8 addrspace(1)* [[SEL]]) ] 254; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0) 255; CHECK-NEXT: [[SEL_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1) 256; CHECK-NEXT: [[RES:%.*]] = load i8, i8 addrspace(1)* [[PHI_RELOCATED]], align 1 257; CHECK-NEXT: ret i8 [[RES]] 258; 259entry: 260 %sel = select i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2 261 br i1 %c, label %taken, label %merge 262taken: 263 %gep = getelementptr i8, i8 addrspace(1)* %sel, i64 8 264 br label %merge 265merge: 266 %phi = phi i8 addrspace(1)* [%gep, %taken], [%sel, %entry] 267 call void @foo() 268 %res = load i8, i8 addrspace(1)* %phi 269 ret i8 %res 270} 271 272; An example of a non-trivial subgraph computing base pointers. 273define i8 @test_subgraph2(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" { 274; CHECK-LABEL: @test_subgraph2( 275; CHECK-NEXT: entry: 276; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C:%.*]], i8 addrspace(1)* [[A1:%.*]], i8 addrspace(1)* [[A2:%.*]] 277; CHECK-NEXT: [[IE:%.*]] = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* [[SEL]], i64 0 278; CHECK-NEXT: [[BROADCAST:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[IE]], <2 x i8 addrspace(1)*> [[IE]], <2 x i32> zeroinitializer 279; CHECK-NEXT: [[EE:%.*]] = extractelement <2 x i8 addrspace(1)*> [[BROADCAST]], i32 1 280; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[EE]]) ] 281; CHECK-NEXT: [[EE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0) 282; CHECK-NEXT: [[RES:%.*]] = load i8, i8 addrspace(1)* [[EE_RELOCATED]], align 1 283; CHECK-NEXT: ret i8 [[RES]] 284; 285entry: 286 %sel = select i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2 287 %ie = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* %sel, i64 0 288 %broadcast = shufflevector <2 x i8 addrspace(1)*> %ie, <2 x i8 addrspace(1)*> %ie, <2 x i32> zeroinitializer 289 %ee = extractelement <2 x i8 addrspace(1)*> %broadcast, i32 1 290 call void @foo() 291 %res = load i8, i8 addrspace(1)* %ee 292 ret i8 %res 293} 294 295 296declare void @foo() 297