1;; Test that pure virtual base is handled correctly. 2 3;; Index based WPD 4;; Generate unsplit module with summary for ThinLTO index-based WPD. 5; RUN: opt --thinlto-bc -o %t1a.o %s 6; RUN: llvm-lto2 run %t1a.o -save-temps -pass-remarks=. \ 7; RUN: -whole-program-visibility \ 8; RUN: -o %t3a \ 9; RUN: -r=%t1a.o,_start,plx \ 10; RUN: -r=%t1a.o,_ZTV1A,p \ 11; RUN: -r=%t1a.o,_ZTV1B,p \ 12; RUN: -r=%t1a.o,_ZN1A1fEi,p \ 13; RUN: -r=%t1a.o,_ZN1A1nEi,p \ 14; RUN: -r=%t1a.o,_ZN1B1fEi,p \ 15; RUN: -r=%t1a.o,__cxa_pure_virtual, \ 16; RUN: 2>&1 | FileCheck %s --check-prefix=REMARK 17; RUN: llvm-dis %t3a.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR 18 19;; Hybrid WPD 20;; Generate split module with summary for hybrid Thin/Regular LTO WPD. 21; RUN: opt --thinlto-bc --thinlto-split-lto-unit -o %t1b.o %s 22; RUN: llvm-lto2 run %t1b.o -save-temps -pass-remarks=. \ 23; RUN: -whole-program-visibility \ 24; RUN: -o %t3b \ 25; RUN: -r=%t1b.o,_start,plx \ 26; RUN: -r=%t1b.o,_ZTV1A, \ 27; RUN: -r=%t1b.o,_ZTV1B, \ 28; RUN: -r=%t1b.o,__cxa_pure_virtual, \ 29; RUN: -r=%t1b.o,_ZN1A1fEi,p \ 30; RUN: -r=%t1b.o,_ZN1A1nEi,p \ 31; RUN: -r=%t1b.o,_ZN1B1fEi,p \ 32; RUN: -r=%t1b.o,_ZTV1A,p \ 33; RUN: -r=%t1b.o,_ZTV1B,p \ 34; RUN: -r=%t1b.o,_ZN1A1nEi, \ 35; RUN: -r=%t1b.o,_ZN1B1fEi, \ 36; RUN: -r=%t1b.o,__cxa_pure_virtual, \ 37; RUN: 2>&1 | FileCheck %s --check-prefix=REMARK 38; RUN: llvm-dis %t3b.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR 39 40;; Regular LTO WPD 41; RUN: opt -o %t1c.o %s 42; RUN: llvm-lto2 run %t1c.o -save-temps -pass-remarks=. \ 43; RUN: -whole-program-visibility \ 44; RUN: -o %t3c \ 45; RUN: -r=%t1c.o,_start,plx \ 46; RUN: -r=%t1c.o,_ZTV1A,p \ 47; RUN: -r=%t1c.o,_ZTV1B,p \ 48; RUN: -r=%t1c.o,_ZN1A1fEi,p \ 49; RUN: -r=%t1c.o,_ZN1A1nEi,p \ 50; RUN: -r=%t1c.o,_ZN1B1fEi,p \ 51; RUN: -r=%t1c.o,__cxa_pure_virtual, \ 52; RUN: 2>&1 | FileCheck %s --check-prefix=REMARK 53; RUN: llvm-dis %t3c.0.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR 54 55; REMARK-DAG: single-impl: devirtualized a call to _ZN1A1nEi 56 57target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 58target triple = "x86_64-grtev4-linux-gnu" 59 60%struct.A = type { i32 (...)** } 61%struct.B = type { %struct.A } 62 63@_ZTV1A = linkonce_odr unnamed_addr constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (void ()* @__cxa_pure_virtual to i8*), i8* bitcast (void ()* @__cxa_pure_virtual to i8*)] }, !type !0, !vcall_visibility !2 64@_ZTV1B = linkonce_odr unnamed_addr constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !1, !vcall_visibility !2 65 66;; Prevent the vtables from being dead code eliminated. 67@llvm.used = appending global [2 x i8*] [ i8* bitcast ( { [4 x i8*] }* @_ZTV1A to i8*), i8* bitcast ( { [4 x i8*] }* @_ZTV1B to i8*)] 68 69; CHECK-IR-LABEL: define dso_local i32 @_start 70define i32 @_start(%struct.A* %obj, i32 %a) { 71entry: 72 %0 = bitcast %struct.A* %obj to i8*** 73 %vtable = load i8**, i8*** %0 74 %1 = bitcast i8** %vtable to i8* 75 %p = call i1 @llvm.type.test(i8* %1, metadata !"_ZTS1A") 76 call void @llvm.assume(i1 %p) 77 %fptrptr = getelementptr i8*, i8** %vtable, i32 1 78 %2 = bitcast i8** %fptrptr to i32 (%struct.A*, i32)** 79 %fptr1 = load i32 (%struct.A*, i32)*, i32 (%struct.A*, i32)** %2, align 8 80 81 ;; Check that the call was devirtualized. 82 ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi 83 ; CHECK-NODEVIRT-IR: %call = tail call i32 %fptr1 84 %call = tail call i32 %fptr1(%struct.A* nonnull %obj, i32 %a) 85 86 ret i32 %call 87} 88; CHECK-IR-LABEL: ret i32 89; CHECK-IR-NEXT: } 90 91declare i1 @llvm.type.test(i8*, metadata) 92declare void @llvm.assume(i1) 93declare void @__cxa_pure_virtual() unnamed_addr 94 95define linkonce_odr i32 @_ZN1A1fEi(%struct.A* %this, i32 %a) #0 { 96 ret i32 0 97} 98 99define linkonce_odr i32 @_ZN1A1nEi(%struct.A* %this, i32 %a) #0 { 100 ret i32 0 101} 102 103define linkonce_odr i32 @_ZN1B1fEi(%struct.B* %this, i32 %a) #0 { 104 ret i32 0 105} 106 107;; Make sure we don't inline or otherwise optimize out the direct calls. 108attributes #0 = { noinline optnone } 109 110!0 = !{i64 16, !"_ZTS1A"} 111!1 = !{i64 16, !"_ZTS1B"} 112!2 = !{i64 0} 113