mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 11:13:28 +01:00
b852bbbbae
This restores commit 748bb5a0f1964d20dfb3891b0948ab6c66236c70, along with a fix for a Chromium test suite build issue (and a new test for that case). Differential Revision: https://reviews.llvm.org/D73242
75 lines
2.5 KiB
LLVM
75 lines
2.5 KiB
LLVM
; REQUIRES: x86-registered-target
|
|
|
|
; Test CFI devirtualization through the thin link and backend when
|
|
; a type id is Unsat (not used on any global's type metadata).
|
|
;
|
|
; In this test case, the first module is split and will import a resolution
|
|
; for its type test. The resolution would be exported by the second
|
|
; module, which is set up so that it does not get split (treated as regular
|
|
; LTO because it does not have any external globals from which to create
|
|
; a unique module ID). We should not actually get any resolution for the
|
|
; type id in this case, since no globals include it in their type metadata,
|
|
; so the resolution is Unsat and the type.checked.load instructions are
|
|
; converted to type tests that evaluate to false.
|
|
|
|
; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t.o %s
|
|
; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t1.o %p/Inputs/cfi-unsat.ll
|
|
|
|
; RUN: llvm-lto2 run %t.o %t1.o -save-temps -use-new-pm -pass-remarks=. \
|
|
; RUN: -whole-program-visibility \
|
|
; RUN: -o %t3 \
|
|
; RUN: -r=%t.o,test2,px \
|
|
; RUN: -r=%t1.o,_ZTV1B,px \
|
|
; RUN: -r=%t1.o,test,px
|
|
; RUN: llvm-dis %t3.index.bc -o - | FileCheck %s --check-prefix=INDEX
|
|
; RUN: llvm-dis %t3.0.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR0
|
|
; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
|
|
|
|
; INDEX-NOT: "typeid:"
|
|
|
|
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-grtev4-linux-gnu"
|
|
|
|
%struct.A = type { i32 (...)** }
|
|
|
|
$test2 = comdat any
|
|
|
|
; CHECK-IR0: define weak_odr i32 @test
|
|
define linkonce_odr i32 @test2(%struct.A* %obj, i32 %a) comdat {
|
|
; CHECK-IR0-NEXT: entry:
|
|
entry:
|
|
; CHECK-IR0-NEXT: %0 = bitcast
|
|
%0 = bitcast %struct.A* %obj to i8**
|
|
; CHECK-IR0-NEXT: %vtable5 =
|
|
%vtable5 = load i8*, i8** %0
|
|
|
|
; CHECK-IR0-NEXT: tail call void @llvm.trap()
|
|
; CHECK-IR0-NEXT: unreachable
|
|
|
|
%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)*
|
|
|
|
%call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a)
|
|
|
|
ret i32 %call
|
|
; CHECK-IR0-NEXT: }
|
|
}
|
|
|
|
; CHECK-IR1: define weak_odr i32 @test2
|
|
; CHECK-IR1-NEXT: entry:
|
|
; CHECK-IR1-NEXT: tail call void @llvm.trap()
|
|
; CHECK-IR1-NEXT: unreachable
|
|
; CHECK-IR1-NEXT: }
|
|
|
|
declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata)
|
|
declare void @llvm.trap()
|