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1; "-debug-only" requires asserts.2; REQUIRES: asserts3; RUN: rm -rf %t && split-file %s %t && cd %t4 5; Generate per-module summaries.6; RUN: opt -module-summary main.ll -o main.bc7; RUN: opt -module-summary lib.ll -o lib.bc8 9; Generate the combined summary and distributed indices.10 11; - For function import, set 'import-instr-limit' to 7 and fall back to import12; function declarations.13; - In main.ll, function 'main' calls 'small_func' and 'large_func'. Both callees14; are defined in lib.ll. 'small_func' has two indirect callees, one is smaller15; and the other one is larger. Both callees of 'small_func' are defined in lib.ll.16; - Given the import limit, in main's combined summary, the import type of 'small_func'17; and 'small_indirect_callee' will be 'definition', and the import type of18; large* functions and their aliasees will be 'declaration'.19;20; The test will disassemble combined summaries and check the import type is21; correct. Right now postlink optimizer pipeline doesn't do anything (e.g.,22; import the declaration or de-serialize summary attributes yet) so there is23; nothing to test more than the summary content.24;25; TODO: Extend this test case to test IR once postlink optimizer makes use of26; the import type for declarations.27;28; RUN: llvm-lto2 run \29; RUN: -debug-only=function-import \30; RUN: -import-instr-limit=7 \31; RUN: -import-instr-evolution-factor=1.0 \32; RUN: -import-declaration \33; RUN: -thinlto-distributed-indexes \34; RUN: -r=main.bc,main,px \35; RUN: -r=main.bc,small_func, \36; RUN: -r=main.bc,large_func, \37; RUN: -r=main.bc,read_write_global_vars, \38; RUN: -r=main.bc,external_func, \39; RUN: -r=lib.bc,callee,pl \40; RUN: -r=lib.bc,large_indirect_callee,px \41; RUN: -r=lib.bc,large_indirect_bar,px \42; RUN: -r=lib.bc,small_func,px \43; RUN: -r=lib.bc,large_func,px \44; RUN: -r=lib.bc,read_write_global_vars,px \45; RUN: -r=lib.bc,large_indirect_callee_alias,px \46; RUN: -r=lib.bc,large_indirect_bar_alias,px \47; RUN: -r=lib.bc,calleeAddrs,px -r=lib.bc,calleeAddrs2,px -o summary main.bc lib.bc 2>&1 | FileCheck %s --check-prefix=DUMP48;49; RUN: llvm-lto -thinlto-action=thinlink -import-declaration -import-instr-limit=7 -import-instr-evolution-factor=1.0 -o combined.index.bc main.bc lib.bc50; RUN: llvm-lto -thinlto-action=distributedindexes -debug-only=function-import -import-declaration -import-instr-limit=7 -import-instr-evolution-factor=1.0 -thinlto-index combined.index.bc main.bc lib.bc 2>&1 | FileCheck %s --check-prefix=DUMP51 52; DUMP: - 2 function definitions and 4 function declarations imported from lib.bc53 54; First disassemble per-module summary and find out the GUID for {large_func, large_indirect_callee}.55;56; RUN: llvm-dis lib.bc -o - | FileCheck %s --check-prefix=LIB-DIS57; LIB-DIS: module: (path: "lib.bc", hash: (0, 0, 0, 0, 0))58; LIB-DIS: gv: (name: "large_func", summaries: {{.*}}) ; guid = 241849756466270893559; LIB-DIS: gv: (name: "large_indirect_bar_alias", summaries: {{.*}}, aliasee: [[LARGEINDIRECT_BAR:\^[0-9]+]]{{.*}}guid = 1359095177347491331560; LIB-DIS: [[LARGEINDIRECT_BAR]] = gv: (name: "large_indirect_bar", summaries: {{.*}}) ; guid = 1377091788539953677361; LIB-DIS: [[LARGEINDIRECT:\^[0-9]+]] = gv: (name: "large_indirect_callee", summaries: {{.*}}) ; guid = 1434344078666469113462; LIB-DIS: gv: (name: "large_indirect_callee_alias", summaries: {{.*}}, aliasee: [[LARGEINDIRECT]]{{.*}}guid = 1673017394362535046963;64; Secondly disassemble main's combined summary and verify the import type of65; these two GUIDs are declaration.66;67; RUN: llvm-dis main.bc.thinlto.bc -o - | FileCheck %s --check-prefix=MAIN-DIS68;69; MAIN-DIS: [[LIBMOD:\^[0-9]+]] = module: (path: "lib.bc", hash: (0, 0, 0, 0, 0))70; MAIN-DIS: gv: (guid: 2418497564662708935, summaries: (function: (module: [[LIBMOD]], flags: ({{.*}} importType: declaration), insts: 8, {{.*}})))71; When alias is imported as a copy of the aliasee, but the aliasee is not being72; imported by itself, the aliasee should be null.73; MAIN-DIS: gv: (guid: 13590951773474913315, summaries: (alias: (module: [[LIBMOD]], flags: ({{.*}} importType: declaration), aliasee: null)))74; MAIN-DIS: [[LARGEINDIRECT:\^[0-9]+]] = gv: (guid: 14343440786664691134, summaries: (function: (module: [[LIBMOD]], flags: ({{.*}} importType: declaration), insts: 8, {{.*}})))75; MAIN-DIS: gv: (guid: 16730173943625350469, summaries: (alias: (module: [[LIBMOD]], flags: ({{.*}} importType: declaration), aliasee: [[LARGEINDIRECT]])))76 77; RUN: opt -passes=function-import -import-all-index -summary-file=main.bc.thinlto.bc main.bc -o main-after-import.bc78; RUN: llvm-dis -o - main-after-import.bc | FileCheck %s --check-prefix=MAIN-IMPORT79 80; Tests that dso_local attribute is applied on a global var from its summary.81MAIN-IMPORT: @read_write_global_vars = external dso_local global [1 x ptr]82 83; Run in-process ThinLTO and tests that84; 1. `callee` remains internalized even if the symbols of its callers85; (large_func, large_indirect_callee, large_indirect_bar) are exported as86; declarations and visible to main module.87; 2. the debugging logs from `function-import` pass are expected.88; Set relocation model to static so the dso_local attribute from a summary is89; applied on the global variable declaration.90 91; RUN: llvm-lto2 run \92; RUN: -relocation-model=static \93; RUN: -debug-only=function-import \94; RUN: -save-temps \95; RUN: -thinlto-threads=1 \96; RUN: -import-instr-limit=7 \97; RUN: -import-instr-evolution-factor=1.0 \98; RUN: -import-declaration \99; RUN: -r=main.bc,main,px \100; RUN: -r=main.bc,small_func, \101; RUN: -r=main.bc,large_func, \102; RUN: -r=main.bc,read_write_global_vars, \103; RUN: -r=main.bc,external_func, \104; RUN: -r=lib.bc,callee,pl \105; RUN: -r=lib.bc,large_indirect_callee,px \106; RUN: -r=lib.bc,large_indirect_bar,px \107; RUN: -r=lib.bc,small_func,px \108; RUN: -r=lib.bc,large_func,px \109; RUN: -r=lib.bc,read_write_global_vars,px \110; RUN: -r=lib.bc,large_indirect_callee_alias,px \111; RUN: -r=lib.bc,large_indirect_bar_alias,px \112; RUN: -r=lib.bc,calleeAddrs,px -r=lib.bc,calleeAddrs2,px -o in-process main.bc lib.bc 2>&1 | FileCheck %s --check-prefix=IMPORTDUMP113 114; TODO: Extend this test case to test IR once postlink optimizer makes use of115; the import type for declarations.116; IMPORTDUMP-DAG: Not importing function 11825436545918268459 callee from lib.cc117; IMPORTDUMP-DAG: Is importing function declaration 14343440786664691134 large_indirect_callee from lib.cc118; IMPORTDUMP-DAG: Is importing function definition 13568239288960714650 small_indirect_callee from lib.cc119; IMPORTDUMP-DAG: Is importing function definition 6976996067367342685 small_func from lib.cc120; IMPORTDUMP-DAG: Is importing function declaration 2418497564662708935 large_func from lib.cc121; IMPORTDUMP-DAG: Is importing global declaration 7680325410415171624 calleeAddrs from lib.cc122; IMPORTDUMP-DAG: Is importing alias declaration 16730173943625350469 large_indirect_callee_alias from lib.cc123; IMPORTDUMP-DAG: Is importing alias declaration 13590951773474913315 large_indirect_bar_alias from lib.cc124; IMPORTDUMP-DAG: Not importing function 13770917885399536773 large_indirect_bar125 126; RUN: llvm-dis in-process.1.3.import.bc -o - | FileCheck %s --check-prefix=IMPORT127 128; RUN: llvm-dis in-process.2.2.internalize.bc -o - | FileCheck %s --check-prefix=INTERNALIZE129 130; IMPORT-DAG: define available_externally void @small_func131; IMPORT-DAG: define available_externally hidden void @small_indirect_callee132; IMPORT-DAG: declare void @large_func133; Tests that dso_local attribute is applied on a global var from its summary.134; IMPORT-DAG: @read_write_global_vars = external dso_local global [1 x ptr]135; IMPORT-NOT: large_indirect_callee136; IMPORT-NOT: large_indirect_callee_alias137; IMPORT-NOT: large_indirect_bar138; IMPORT-NOT: large_indirect_bar_alias139 140; INTERNALIZE: define internal void @callee()141 142;--- main.ll143target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"144target triple = "x86_64-unknown-linux-gnu"145 146@read_write_global_vars = external global [1 x ptr]147 148define i32 @main() {149 call void @small_func()150 call void @large_func()151 %num = call ptr @external_func(ptr @read_write_global_vars)152 store ptr %num, ptr getelementptr inbounds ([1 x ptr], ptr @read_write_global_vars, i64 0, i64 0)153 %res1 = call i32 @external_func(ptr @read_write_global_vars)154 ret i32 0155}156 157declare void @small_func()158 159; large_func without attributes160declare void @large_func()161 162declare ptr @external_func(ptr)163 164;--- lib.ll165source_filename = "lib.cc"166target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"167target triple = "x86_64-unknown-linux-gnu"168 169; Both large_indirect_callee and large_indirect_callee_alias are referenced170; and visible to main.ll.171@calleeAddrs = global [3 x ptr] [ptr @large_indirect_callee, ptr @small_indirect_callee, ptr @large_indirect_callee_alias]172 173; large_indirect_bar_alias is visible to main.ll but its aliasee isn't.174@calleeAddrs2 = global [1 x ptr] [ptr @large_indirect_bar_alias]175 176; @read_write_global_vars is not read-only nor write-only (in main.ll). It's not177; a constant global var and has references, so it's not importable as a definition.178@read_write_global_vars = dso_local global [1 x ptr] [ptr @large_indirect_callee]179 180define void @callee() #1 {181 ret void182}183 184define void @large_indirect_callee()#2 {185 call void @callee()186 call void @callee()187 call void @callee()188 call void @callee()189 call void @callee()190 call void @callee()191 call void @callee()192 ret void193}194 195define void @large_indirect_bar()#2 {196 call void @callee()197 call void @callee()198 call void @callee()199 call void @callee()200 call void @callee()201 call void @callee()202 call void @callee()203 ret void204}205 206define internal void @small_indirect_callee() #0 {207entry:208 %0 = load ptr, ptr @calleeAddrs2209 call void %0(), !prof !3210 ret void211}212 213@large_indirect_callee_alias = alias void(), ptr @large_indirect_callee214 215@large_indirect_bar_alias = alias void(), ptr @large_indirect_bar216 217define void @small_func() {218entry:219 %0 = load ptr, ptr @calleeAddrs220 call void %0(), !prof !0221 %1 = load ptr, ptr getelementptr inbounds ([3 x ptr], ptr @calleeAddrs, i64 0, i64 1)222 call void %1(), !prof !1223 %2 = load ptr, ptr getelementptr inbounds ([3 x ptr], ptr @calleeAddrs, i64 0, i64 2)224 call void %2(), !prof !2225 ret void226}227 228define void @large_func() #0 {229entry:230 call void @callee()231 call void @callee()232 call void @callee()233 call void @callee()234 call void @callee()235 call void @callee()236 call void @callee()237 ret void238}239 240attributes #0 = { nounwind norecurse }241 242attributes #1 = { noinline }243 244attributes #2 = { norecurse }245 246!0 = !{!"VP", i32 0, i64 1, i64 14343440786664691134, i64 1}247!1 = !{!"VP", i32 0, i64 1, i64 13568239288960714650, i64 1}248!2 = !{!"VP", i32 0, i64 1, i64 16730173943625350469, i64 1}249!3 = !{!"VP", i32 0, i64 1, i64 13590951773474913315, i64 1}250