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; REQUIRES: x86-registered-target
; Test CFI devirtualization through the thin link and backend.
; RUN: opt -thinlto-bc -o %t.o %s
; Legacy PM
; RUN: llvm-lto2 run %t.o -save-temps \
; 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,_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
; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR
; New PM
; RUN: llvm-lto2 run %t.o -save-temps -use-new-pm \
; 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,_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
; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR
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
; 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"}
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