| ; REQUIRES: x86-registered-target |
| |
| ; Test CFI devirtualization through the thin link and backend. |
| |
| ; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t.o %s |
| |
| ; Legacy PM |
| ; FIXME: Fix machine verifier issues and remove -verify-machineinstrs=0. PR39436. |
| ; RUN: llvm-lto2 run %t.o -save-temps -pass-remarks=. \ |
| ; RUN: -verify-machineinstrs=0 \ |
| ; RUN: -o %t3 \ |
| ; RUN: -r=%t.o,test,px \ |
| ; RUN: -r=%t.o,_ZN1A1nEi,p \ |
| ; RUN: -r=%t.o,_ZN1B1fEi,p \ |
| ; RUN: -r=%t.o,_ZN1C1fEi,p \ |
| ; RUN: -r=%t.o,empty,p \ |
| ; RUN: -r=%t.o,_ZTV1B, \ |
| ; RUN: -r=%t.o,_ZTV1C, \ |
| ; RUN: -r=%t.o,_ZN1A1nEi, \ |
| ; RUN: -r=%t.o,_ZN1B1fEi, \ |
| ; RUN: -r=%t.o,_ZN1C1fEi, \ |
| ; RUN: -r=%t.o,_ZTV1B,px \ |
| ; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=REMARK |
| ; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR |
| |
| ; New PM |
| ; FIXME: Fix machine verifier issues and remove -verify-machineinstrs=0. PR39436. |
| ; RUN: llvm-lto2 run %t.o -save-temps -use-new-pm -pass-remarks=. \ |
| ; RUN: -verify-machineinstrs=0 \ |
| ; RUN: -o %t3 \ |
| ; RUN: -r=%t.o,test,px \ |
| ; RUN: -r=%t.o,_ZN1A1nEi,p \ |
| ; RUN: -r=%t.o,_ZN1B1fEi,p \ |
| ; RUN: -r=%t.o,_ZN1C1fEi,p \ |
| ; RUN: -r=%t.o,empty,p \ |
| ; RUN: -r=%t.o,_ZTV1B, \ |
| ; RUN: -r=%t.o,_ZTV1C, \ |
| ; RUN: -r=%t.o,_ZN1A1nEi, \ |
| ; RUN: -r=%t.o,_ZN1B1fEi, \ |
| ; RUN: -r=%t.o,_ZN1C1fEi, \ |
| ; RUN: -r=%t.o,_ZTV1B,px \ |
| ; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=REMARK |
| ; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR |
| |
| ; REMARK: single-impl: devirtualized a call to _ZN1A1nEi |
| |
| ; Next check that we emit an error when trying to LTO link this module |
| ; containing an llvm.type.checked.load (with a split LTO Unit) with one |
| ; that does not have a split LTO Unit. |
| ; RUN: opt -thinlto-bc -o %t2.o %S/Inputs/empty.ll |
| ; RUN: not llvm-lto2 run %t.o %t2.o -save-temps -pass-remarks=. \ |
| ; RUN: -verify-machineinstrs=0 \ |
| ; RUN: -o %t3 \ |
| ; RUN: -r=%t.o,test,px \ |
| ; RUN: -r=%t.o,_ZN1A1nEi,p \ |
| ; RUN: -r=%t.o,_ZN1B1fEi,p \ |
| ; RUN: -r=%t.o,_ZN1C1fEi,p \ |
| ; RUN: -r=%t.o,empty,p \ |
| ; RUN: -r=%t.o,_ZTV1B, \ |
| ; RUN: -r=%t.o,_ZTV1C, \ |
| ; RUN: -r=%t.o,_ZN1A1nEi, \ |
| ; RUN: -r=%t.o,_ZN1B1fEi, \ |
| ; RUN: -r=%t.o,_ZN1C1fEi, \ |
| ; RUN: -r=%t.o,_ZTV1B,px \ |
| ; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=ERROR |
| ; ERROR: LLVM ERROR: inconsistent LTO Unit splitting with llvm.type.test or llvm.type.checked.load |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-grtev4-linux-gnu" |
| |
| %struct.A = type { i32 (...)** } |
| %struct.B = type { %struct.A } |
| %struct.C = type { %struct.A } |
| |
| @_ZTV1B = 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 |
| @_ZTV1C = constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.C*, i32)* @_ZN1C1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !2 |
| |
| ; Put declaration first to test handling of remarks when the first |
| ; function has no basic blocks. |
| declare void @empty() |
| |
| ; CHECK-IR-LABEL: define i32 @test |
| define i32 @test(%struct.A* %obj, i32 %a) { |
| entry: |
| %0 = bitcast %struct.A* %obj to i8** |
| %vtable5 = load i8*, i8** %0 |
| |
| %1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable5, i32 8, metadata !"_ZTS1A") |
| %2 = extractvalue { i8*, i1 } %1, 1 |
| br i1 %2, label %cont, label %trap |
| |
| trap: |
| tail call void @llvm.trap() |
| unreachable |
| |
| cont: |
| %3 = extractvalue { i8*, i1 } %1, 0 |
| %4 = bitcast i8* %3 to i32 (%struct.A*, i32)* |
| |
| ; Check that the call was devirtualized. |
| ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi |
| %call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a) |
| %vtable16 = load i8*, i8** %0 |
| %5 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable16, i32 0, metadata !"_ZTS1A") |
| %6 = extractvalue { i8*, i1 } %5, 1 |
| br i1 %6, label %cont2, label %trap |
| |
| cont2: |
| %7 = extractvalue { i8*, i1 } %5, 0 |
| %8 = bitcast i8* %7 to i32 (%struct.A*, i32)* |
| |
| ; Check that traps are conditional. Invalid TYPE_ID can cause |
| ; unconditional traps. |
| ; CHECK-IR: br i1 {{.*}}, label %trap |
| |
| ; We still have to call it as virtual. |
| ; CHECK-IR: %call3 = tail call i32 %8 |
| %call3 = tail call i32 %8(%struct.A* nonnull %obj, i32 %call) |
| ret i32 %call3 |
| } |
| ; CHECK-IR-LABEL: ret i32 |
| ; CHECK-IR-LABEL: } |
| |
| declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata) |
| declare void @llvm.trap() |
| |
| declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a) |
| declare i32 @_ZN1A1nEi(%struct.A* %this, i32 %a) |
| declare i32 @_ZN1C1fEi(%struct.C* %this, i32 %a) |
| |
| !0 = !{i64 16, !"_ZTS1A"} |
| !1 = !{i64 16, !"_ZTS1B"} |
| !2 = !{i64 16, !"_ZTS1C"} |