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1; REQUIRES: x86-registered-target2 3; Test devirtualization through the thin link and backend.4 5; Generate split module with summary for hybrid Thin/Regular LTO WPD.6; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t.o %s7 8; Check that we have module flag showing splitting enabled, and that we don't9; generate summary information needed for index-based WPD.10; RUN: llvm-modextract -b -n=0 %t.o -o %t.o.011; RUN: llvm-dis -o - %t.o.0 | FileCheck %s --check-prefix=ENABLESPLITFLAG --implicit-check-not=vTableFuncs --implicit-check-not=typeidCompatibleVTable12; RUN: llvm-modextract -b -n=1 %t.o -o %t.o.113; RUN: llvm-dis -o - %t.o.1 | FileCheck %s --check-prefix=ENABLESPLITFLAG --implicit-check-not=vTableFuncs --implicit-check-not=typeidCompatibleVTable14; ENABLESPLITFLAG: !{i32 1, !"EnableSplitLTOUnit", i32 1}15 16; Generate unsplit module with summary for ThinLTO index-based WPD.17; RUN: opt -thinlto-bc -o %t2.o %s18 19; Check that we don't have module flag when splitting not enabled for ThinLTO,20; and that we generate summary information needed for index-based WPD.21; RUN: llvm-dis -o - %t2.o | FileCheck %s --check-prefix=NOENABLESPLITFLAG22; NOENABLESPLITFLAG-DAG: !{i32 1, !"EnableSplitLTOUnit", i32 0}23; NOENABLESPLITFLAG-DAG: [[An:\^[0-9]+]] = gv: (name: "_ZN1A1nEi"24; NOENABLESPLITFLAG-DAG: [[Bf:\^[0-9]+]] = gv: (name: "_ZN1B1fEi"25; NOENABLESPLITFLAG-DAG: [[Cf:\^[0-9]+]] = gv: (name: "_ZN1C1fEi"26; NOENABLESPLITFLAG-DAG: [[Dm:\^[0-9]+]] = gv: (name: "_ZN1D1mEi"27; NOENABLESPLITFLAG-DAG: [[B:\^[0-9]+]] = gv: (name: "_ZTV1B", {{.*}} vTableFuncs: ((virtFunc: [[Bf]], offset: 16), (virtFunc: [[An]], offset: 24)), refs: ([[Bf]], [[An]])28; NOENABLESPLITFLAG-DAG: [[C:\^[0-9]+]] = gv: (name: "_ZTV1C", {{.*}} vTableFuncs: ((virtFunc: [[Cf]], offset: 16), (virtFunc: [[An]], offset: 24)), refs: ([[An]], [[Cf]])29; NOENABLESPLITFLAG-DAG: [[D:\^[0-9]+]] = gv: (name: "_ZTV1D", {{.*}} vTableFuncs: ((virtFunc: [[Dm]], offset: 16)), refs: ([[Dm]])30; NOENABLESPLITFLAG-DAG: [[B_RV:\^[0-9]+]] = gv: (name: "_ZTV1B_RV", {{.*}} vTableFuncs: ((virtFunc: [[Bf]], offset: 8), (virtFunc: [[An]], offset: 12)), refs: ([[B_RV]], [[Bf]], [[An]])31; NOENABLESPLITFLAG-DAG: [[C_RV:\^[0-9]+]] = gv: (name: "_ZTV1C_RV", {{.*}} vTableFuncs: ((virtFunc: [[Cf]], offset: 8), (virtFunc: [[An]], offset: 12)), refs: ([[C_RV]], [[An]], [[Cf]])32; NOENABLESPLITFLAG-DAG: [[D_RV:\^[0-9]+]] = gv: (name: "_ZTV1D_RV", {{.*}} vTableFuncs: ((virtFunc: [[Dm]], offset: 8)), refs: ([[D_RV]], [[Dm]])33; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1A", summary: ((offset: 16, [[B]]), (offset: 16, [[C]])))34; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1B", summary: ((offset: 16, [[B]])))35; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1C", summary: ((offset: 16, [[C]])))36; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1A_RV", summary: ((offset: 8, [[B_RV]]), (offset: 8, [[C_RV]])))37; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1B_RV", summary: ((offset: 8, [[B_RV]])))38; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1C_RV", summary: ((offset: 8, [[C_RV]])))39; Type Id on _ZTV1D should have been promoted40; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "1.{{.*}}", summary: ((offset: 16, [[D]])))41; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "2.{{.*}}", summary: ((offset: 8, [[D_RV]])))42 43; Index based WPD44; RUN: llvm-lto2 run %t2.o -save-temps -pass-remarks=. \45; RUN: -whole-program-visibility \46; RUN: -o %t3 \47; RUN: -r=%t2.o,test,px \48; RUN: -r=%t2.o,test_rv,px \49; RUN: -r=%t2.o,_ZN1A1nEi,p \50; RUN: -r=%t2.o,_ZN1B1fEi,p \51; RUN: -r=%t2.o,_ZN1C1fEi,p \52; RUN: -r=%t2.o,_ZN1D1mEi,p \53; RUN: -r=%t2.o,_ZTV1B,px \54; RUN: -r=%t2.o,_ZTV1C,px \55; RUN: -r=%t2.o,_ZTV1D,px \56; RUN: -r=%t2.o,_ZTV1B_RV,px \57; RUN: -r=%t2.o,_ZTV1C_RV,px \58; RUN: -r=%t2.o,_ZTV1D_RV,px \59; RUN: 2>&1 | FileCheck %s --check-prefix=REMARK60; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR61 62; Check that we're able to prevent specific function from being63; devirtualized when running index based WPD.64; RUN: llvm-lto2 run %t2.o -save-temps -pass-remarks=. \65; RUN: -whole-program-visibility \66; RUN: -wholeprogramdevirt-skip=_ZN1A1nEi \67; RUN: -o %t3 \68; RUN: -r=%t2.o,test,px \69; RUN: -r=%t2.o,test_rv,px \70; RUN: -r=%t2.o,_ZN1A1nEi,p \71; RUN: -r=%t2.o,_ZN1B1fEi,p \72; RUN: -r=%t2.o,_ZN1C1fEi,p \73; RUN: -r=%t2.o,_ZN1D1mEi,p \74; RUN: -r=%t2.o,_ZTV1B,px \75; RUN: -r=%t2.o,_ZTV1C,px \76; RUN: -r=%t2.o,_ZTV1D,px \77; RUN: -r=%t2.o,_ZTV1B_RV,px \78; RUN: -r=%t2.o,_ZTV1C_RV,px \79; RUN: -r=%t2.o,_ZTV1D_RV,px \80; RUN: 2>&1 | FileCheck %s --check-prefix=SKIP81 82; RUN: llvm-lto2 run %t.o -save-temps -pass-remarks=. \83; RUN: -whole-program-visibility \84; RUN: -o %t3 \85; RUN: -r=%t.o,test,px \86; RUN: -r=%t.o,test_rv,px \87; RUN: -r=%t.o,_ZN1A1nEi,p \88; RUN: -r=%t.o,_ZN1B1fEi,p \89; RUN: -r=%t.o,_ZN1C1fEi,p \90; RUN: -r=%t.o,_ZN1D1mEi,p \91; RUN: -r=%t.o,_ZTV1B, \92; RUN: -r=%t.o,_ZTV1C, \93; RUN: -r=%t.o,_ZTV1D, \94; RUN: -r=%t.o,_ZTV1B_RV, \95; RUN: -r=%t.o,_ZTV1C_RV, \96; RUN: -r=%t.o,_ZTV1D_RV, \97; RUN: -r=%t.o,_ZN1A1nEi, \98; RUN: -r=%t.o,_ZN1B1fEi, \99; RUN: -r=%t.o,_ZN1C1fEi, \100; RUN: -r=%t.o,_ZN1D1mEi, \101; RUN: -r=%t.o,_ZTV1B,px \102; RUN: -r=%t.o,_ZTV1C,px \103; RUN: -r=%t.o,_ZTV1D,px \104; RUN: -r=%t.o,_ZTV1B_RV,px \105; RUN: -r=%t.o,_ZTV1C_RV,px \106; RUN: -r=%t.o,_ZTV1D_RV,px \107; RUN: 2>&1 | FileCheck %s --check-prefix=REMARK --dump-input=fail108; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR109 110; REMARK-DAG: single-impl: devirtualized a call to _ZN1A1nEi111; REMARK-DAG: single-impl: devirtualized a call to _ZN1D1mEi112; REMARK-DAG: single-impl: devirtualized a call to _ZN1A1nEi113; REMARK-DAG: single-impl: devirtualized a call to _ZN1D1mEi114 115; SKIP-NOT: devirtualized a call to _ZN1A1nEi116 117target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"118target triple = "x86_64-grtev4-linux-gnu"119 120%struct.A = type { ptr }121%struct.B = type { %struct.A }122%struct.C = type { %struct.A }123%struct.D = type { ptr }124 125@_ZTV1B = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr undef, ptr @_ZN1B1fEi, ptr @_ZN1A1nEi] }, !type !0, !type !1126@_ZTV1C = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr undef, ptr @_ZN1C1fEi, ptr @_ZN1A1nEi] }, !type !0, !type !2127@_ZTV1D = constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr undef, ptr @_ZN1D1mEi] }, !type !3128 129@_ZTV1B_RV = constant { [4 x i32] } { [4 x i32] [130 i32 0,131 i32 undef,132 i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1B1fEi to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1B_RV, i32 0, i32 0, i32 2) to i64)) to i32),133 i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1A1nEi to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1B_RV, i32 0, i32 0, i32 3) to i64)) to i32)134] }, !type !7, !type !8135 136@_ZTV1C_RV = constant { [4 x i32] } { [4 x i32] [137 i32 0,138 i32 undef,139 i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1C1fEi to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1C_RV, i32 0, i32 0, i32 2) to i64)) to i32),140 i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1A1nEi to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1C_RV, i32 0, i32 0, i32 3) to i64)) to i32)141] }, !type !7, !type !9142 143@_ZTV1D_RV = constant { [3 x i32] } { [3 x i32] [144 i32 0,145 i32 undef,146 i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1D1mEi to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [3 x i32] }, ptr @_ZTV1D_RV, i32 0, i32 0, i32 2) to i64)) to i32)147] }, !type !10148 149; CHECK-IR-LABEL: define {{(noundef )?}}i32 @test150define i32 @test(ptr %obj, ptr %obj2, i32 %a) {151entry:152 %vtable = load ptr, ptr %obj153 %p = call i1 @llvm.type.test(ptr %vtable, metadata !"_ZTS1A")154 call void @llvm.assume(i1 %p)155 %fptrptr = getelementptr ptr, ptr %vtable, i32 1156 %fptr1 = load ptr, ptr %fptrptr, align 8157 158 ; Check that the call was devirtualized.159 ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi160 ; Ensure !prof and !callees metadata for indirect call promotion removed.161 ; CHECK-IR-NOT: prof162 ; CHECK-IR-NOT: callees163 %call = tail call i32 %fptr1(ptr nonnull %obj, i32 %a), !prof !5, !callees !6164 165 %fptr22 = load ptr, ptr %vtable, align 8166 167 ; We still have to call it as virtual.168 ; CHECK-IR: %call3 = tail call i32 %fptr22169 %call3 = tail call i32 %fptr22(ptr nonnull %obj, i32 %call)170 171 %vtable2 = load ptr, ptr %obj2172 %p2 = call i1 @llvm.type.test(ptr %vtable2, metadata !4)173 call void @llvm.assume(i1 %p2)174 175 %fptr33 = load ptr, ptr %vtable2, align 8176 177 ; Check that the call was devirtualized.178 ; CHECK-IR: %call4 = tail call i32 @_ZN1D1mEi179 %call4 = tail call i32 %fptr33(ptr nonnull %obj2, i32 %call3)180 ret i32 %call4181}182; CHECK-IR-LABEL: ret i32183; CHECK-IR-LABEL: }184 185declare ptr @llvm.load.relative.i32(ptr, i32)186 187; CHECK-IR-LABEL: define {{.*}}i32 @test_rv188define i32 @test_rv(ptr %obj, ptr %obj2, i32 %a) {189entry:190 %vtable = load ptr, ptr %obj191 %p = call i1 @llvm.type.test(ptr %vtable, metadata !"_ZTS1A_RV")192 call void @llvm.assume(i1 %p)193 %fptr1_rv = call ptr @llvm.load.relative.i32(ptr %vtable, i32 4)194 195 ; Check that the call was devirtualized.196 ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi197 ; Ensure !prof and !callees metadata for indirect call promotion removed.198 ; CHECK-IR-NOT: prof199 ; CHECK-IR-NOT: callees200 %call = tail call i32 %fptr1_rv(ptr nonnull %obj, i32 %a), !prof !5, !callees !6201 202 %fptr22_rv = call ptr @llvm.load.relative.i32(ptr %vtable, i32 0)203 204 ; We still have to call it as virtual.205 ; CHECK-IR: %call3 = tail call i32 %fptr22206 %call3 = tail call i32 %fptr22_rv(ptr nonnull %obj, i32 %call)207 208 %vtable2 = load ptr, ptr %obj2209 %p2 = call i1 @llvm.type.test(ptr %vtable2, metadata !11)210 call void @llvm.assume(i1 %p2)211 212 %fptr33_rv = call ptr @llvm.load.relative.i32(ptr %vtable2, i32 0)213 214 ; Check that the call was devirtualized.215 ; CHECK-IR: %call4 = tail call i32 @_ZN1D1mEi216 %call4 = tail call i32 %fptr33_rv(ptr nonnull %obj2, i32 %call3)217 ret i32 %call4218}219; CHECK-IR-LABEL: ret i32220; CHECK-IR-LABEL: }221 222declare i1 @llvm.type.test(ptr, metadata)223declare void @llvm.assume(i1)224 225define i32 @_ZN1B1fEi(ptr %this, i32 %a) #0 {226 ret i32 0;227}228 229define i32 @_ZN1A1nEi(ptr %this, i32 %a) #0 {230 ret i32 0;231}232 233define i32 @_ZN1C1fEi(ptr %this, i32 %a) #0 {234 ret i32 0;235}236 237define i32 @_ZN1D1mEi(ptr %this, i32 %a) #0 {238 ret i32 0;239}240 241; Make sure we don't inline or otherwise optimize out the direct calls.242attributes #0 = { noinline optnone }243 244!0 = !{i64 16, !"_ZTS1A"}245!1 = !{i64 16, !"_ZTS1B"}246!2 = !{i64 16, !"_ZTS1C"}247!3 = !{i64 16, !4}248!4 = distinct !{}249!5 = !{!"VP", i32 0, i64 1, i64 1621563287929432257, i64 1}250!6 = !{ptr @_ZN1A1nEi}251 252!7 = !{i64 8, !"_ZTS1A_RV"}253!8 = !{i64 8, !"_ZTS1B_RV"}254!9 = !{i64 8, !"_ZTS1C_RV"}255!10 = !{i64 8, !11}256!11 = distinct !{}257