forked from OSchip/llvm-project
113 lines
3.7 KiB
LLVM
113 lines
3.7 KiB
LLVM
; REQUIRES: x86-registered-target
|
|
|
|
; Test CFI devirtualization through the thin link and backend.
|
|
|
|
; RUN: opt -thinlto-bc -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
|
|
|
|
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"}
|