| ; REQUIRES: x86 |
| |
| ; RUN: rm -rf %t.dir |
| ; RUN: split-file %s %t.dir |
| ; RUN: cd %t.dir |
| |
| ;; Common artifacts |
| ; RUN: opt --thinlto-bc --thinlto-split-lto-unit -o %t1.o ThinLTO.ll |
| ; RUN: opt -module-summary -o %t2.o RegularLTO.ll |
| |
| ;; --lto-whole-program-visibility when there's split ThinLTO and a RegularLTO with summary optimizes |
| ;; using the combined index. |
| ; RUN: ld.lld %t1.o %t2.o -o %t3 -save-temps --lto-whole-program-visibility \ |
| ; RUN: -mllvm -pass-remarks=. 2>&1 | FileCheck %s --check-prefix=REMARK |
| ; RUN: llvm-dis %t1.o.4.opt.bc -o - | FileCheck %s --check-prefixes=CHECK-IR,CHECK-COMMON-IR |
| ; RUN: llvm-dis %t3.0.4.opt.bc -o - | FileCheck %s --check-prefixes=CHECK-REGULAR-IR,CHECK-COMMON-REGULAR-IR |
| |
| ;; --lto-validate-all-vtables-have-type-infos when there's split ThinLTO and a RegularLTO with summary behaves the same |
| ;; as everything is present in the combined index. |
| ; RUN: ld.lld %t1.o %t2.o -o %t3 -save-temps --lto-whole-program-visibility --lto-validate-all-vtables-have-type-infos \ |
| ; RUN: -mllvm -pass-remarks=. 2>&1 | FileCheck %s --check-prefix=REMARK |
| ; RUN: llvm-dis %t1.o.4.opt.bc -o - | FileCheck %s --check-prefixes=CHECK-IR,CHECK-COMMON-IR |
| ; RUN: llvm-dis %t3.0.4.opt.bc -o - | FileCheck %s --check-prefixes=CHECK-REGULAR-IR,CHECK-COMMON-REGULAR-IR |
| |
| ; REMARK-DAG: single-impl: devirtualized a call to _ZN1D1mEi |
| ; REMARK-DAG: single-impl: devirtualized a call to _ZN1A1nEi |
| |
| ;--- ThinLTO.ll |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %struct.A = type { ptr } |
| %struct.B = type { %struct.A } |
| %struct.C = type { %struct.A } |
| %struct.D = type { ptr } |
| |
| @_ZTV1B = linkonce_odr constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr @_ZTI1B, ptr @_ZN1A1fEi, ptr @_ZN1A1nEi] }, !type !0, !type !1, !type !2, !type !3, !type !4, !type !5 |
| @_ZTV1C = linkonce_odr constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr @_ZTI1C, ptr @_ZN1A1fEi, ptr @_ZN1A1nEi] }, !type !0, !type !1, !type !2, !type !6, !type !7, !type !8 |
| @_ZTV1D = internal constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI1D, ptr @_ZN1D1mEi] }, !type !9, !vcall_visibility !11 |
| |
| @_ZTS1A = linkonce_odr constant [3 x i8] c"1A\00" |
| @_ZTI1A = linkonce_odr constant { ptr, ptr } { ptr null, ptr @_ZTS1A } |
| |
| @_ZTS1B = linkonce_odr constant [3 x i8] c"1B\00" |
| @_ZTI1B = linkonce_odr constant { ptr, ptr, ptr } { ptr null, ptr @_ZTS1B, ptr @_ZTI1A } |
| |
| @_ZTS1C = linkonce_odr constant [3 x i8] c"1C\00" |
| @_ZTI1C = linkonce_odr constant { ptr, ptr, ptr } { ptr null, ptr @_ZTS1C, ptr @_ZTI1A } |
| |
| @_ZTS1D = internal constant [3 x i8] c"1D\00" |
| @_ZTI1D = internal constant { ptr, ptr } { ptr null, ptr @_ZTS1D } |
| |
| ;; Prevent the vtables from being dead code eliminated. |
| @llvm.used = appending global [3 x ptr] [ ptr @_ZTV1B, ptr @_ZTV1C, ptr @_ZTV1D ], section "llvm.metadata" |
| |
| ; CHECK-COMMON-IR-LABEL: define dso_local noundef i32 @_start |
| define i32 @_start(ptr %obj, ptr %obj2, i32 %a) { |
| ;; Call function built with RegularLTO |
| %RegularLTOResult = call i32 @RegularLTO(ptr %obj, i32 %a) |
| |
| ;; ThinLTO code starts here |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"_ZTS1A") |
| call void @llvm.assume(i1 %p) |
| %fptrptr = getelementptr ptr, ptr %vtable, i32 1 |
| %fptr1 = load ptr, ptr %fptrptr, align 8 |
| |
| ;; Check that the call was devirtualized. |
| ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi |
| %call = tail call i32 %fptr1(ptr nonnull %obj, i32 %a) |
| |
| %fptr22 = load ptr, ptr %vtable, align 8 |
| |
| ;; Check that the call was not devirtualized. |
| ; CHECK-IR: %call2 = tail call i32 %fptr22 |
| %call2 = tail call i32 %fptr22(ptr nonnull %obj, i32 %call) |
| |
| %vtable2 = load ptr, ptr %obj2 |
| %p2 = call i1 @llvm.type.test(ptr %vtable2, metadata !10) |
| call void @llvm.assume(i1 %p2) |
| |
| %fptr33 = load ptr, ptr %vtable2, align 8 |
| |
| ;; Check that the call was devirtualized. |
| ; CHECK-IR: %call3 = tail call i32 @_ZN1D1mEi |
| %call3 = tail call i32 %fptr33(ptr nonnull %obj2, i32 %call2) |
| |
| ret i32 %call3 |
| } |
| ; CHECK-COMMON-IR-LABEL: ret i32 |
| ; CHECK-COMMON-IR-LABEL: } |
| |
| declare i32 @RegularLTO(ptr) |
| declare i1 @llvm.type.test(ptr, metadata) |
| declare void @llvm.assume(i1) |
| |
| define linkonce_odr i32 @_ZN1A1fEi(ptr %this, i32 %a) #0 { |
| ret i32 0; |
| } |
| |
| define linkonce_odr i32 @_ZN1A1nEi(ptr %this, i32 %a) #0 { |
| ret i32 0; |
| } |
| |
| define internal i32 @_ZN1D1mEi(ptr %this, i32 %a) #0 { |
| ret i32 0; |
| } |
| |
| ;; Make sure we don't inline or otherwise optimize out the direct calls. |
| attributes #0 = { noinline optnone } |
| |
| !0 = !{i64 16, !"_ZTS1A"} |
| !1 = !{i64 16, !"_ZTSM1AFviE.virtual"} |
| !2 = !{i64 24, !"_ZTSM1AFviE.virtual"} |
| !3 = !{i64 16, !"_ZTS1B"} |
| !4 = !{i64 16, !"_ZTSM1BFviE.virtual"} |
| !5 = !{i64 24, !"_ZTSM1BFviE.virtual"} |
| !6 = !{i64 16, !"_ZTS1C"} |
| !7 = !{i64 16, !"_ZTSM1CFviE.virtual"} |
| !8 = !{i64 24, !"_ZTSM1CFviE.virtual"} |
| !9 = !{i64 16, !10} |
| !10 = distinct !{} |
| !11 = !{i64 2} |
| |
| ;--- RegularLTO.ll |
| ; REQUIRES: x86 |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %struct.A = type { ptr } |
| %struct.Native = type { %struct.A } |
| |
| @_ZTV7Regular = linkonce_odr unnamed_addr constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr @_ZTI7Regular, ptr @_ZN7Regular1fEi, ptr @_ZN1A1nEi] } , !type !0, !type !1, !type !2, !type !3, !type !4, !type !5 |
| @_ZTS7Regular = linkonce_odr constant [9 x i8] c"7Regular\00" |
| @_ZTI7Regular = linkonce_odr constant { ptr, ptr, ptr } { ptr null, ptr @_ZTS7Regular, ptr @_ZTI1A } |
| |
| ; Base type A does not need to emit a vtable if it's never instantiated. However, RTTI still gets generated |
| @_ZTS1A = linkonce_odr constant [3 x i8] c"1A\00" |
| @_ZTI1A = linkonce_odr constant { ptr, ptr } { ptr null, ptr @_ZTS1A } |
| |
| ;; Prevent the vtables from being dead code eliminated. |
| @llvm.used = appending global [1 x ptr] [ ptr @_ZTV7Regular ], section "llvm.metadata" |
| |
| ; CHECK-COMMON-REGULAR-IR-LABEL: define dso_local i32 @RegularLTO |
| define i32 @RegularLTO(ptr %obj, i32 %a) #0 { |
| entry: |
| %vtable = load ptr, ptr %obj |
| %p = call i1 @llvm.type.test(ptr %vtable, metadata !"_ZTS1A") |
| call void @llvm.assume(i1 %p) |
| %fptr1 = load ptr, ptr %vtable, align 8 |
| |
| ;; Check that the call was not devirtualized. |
| ; CHECK-REGULAR-IR: %call = tail call i32 %fptr1 |
| %call = tail call i32 %fptr1(ptr nonnull %obj, i32 %a) |
| |
| ret i32 %call |
| } |
| ; CHECK-COMMON-REGULAR-IR-LABEL: ret i32 |
| ; CHECK-COMMON-REGULAR-IR-LABEL: } |
| |
| declare i1 @llvm.type.test(ptr, metadata) |
| declare void @llvm.assume(i1) |
| |
| define linkonce_odr i32 @_ZN7Regular1fEi(ptr %this, i32 %a) #0 { |
| ret i32 1; |
| } |
| |
| define linkonce_odr i32 @_ZN1A1nEi(ptr %this, i32 %a) #0 { |
| ret i32 0; |
| } |
| |
| attributes #0 = { noinline optnone } |
| !llvm.module.flags = !{!6, !7} |
| |
| !0 = !{i64 16, !"_ZTS1A"} |
| !1 = !{i64 16, !"_ZTSM1AFviE.virtual"} |
| !2 = !{i64 24, !"_ZTSM1AFviE.virtual"} |
| !3 = !{i64 16, !"_ZTS7Regular"} |
| !4 = !{i64 16, !"_ZTSM7RegularFviE.virtual"} |
| !5 = !{i64 24, !"_ZTSM7RegularFviE.virtual"} |
| !6 = !{i32 1, !"ThinLTO", i32 0} |
| !7 = !{i32 1, !"EnableSplitLTOUnit", i32 1} |