cfi.ll
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; REQUIRES: x86-registered-target
; Test CFI through the thin link and backend.
; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t.o %s
; Legacy PM
; RUN: llvm-lto2 run -save-temps %t.o \
; RUN: -o %t3 \
; RUN: -r=%t.o,test,px \
; RUN: -r=%t.o,_ZTV1B, \
; RUN: -r=%t.o,_ZN1B1fEi, \
; RUN: -r=%t.o,_ZTV1B,px
; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR
; New PM
; RUN: llvm-lto2 run -save-temps %t.o -use-new-pm \
; RUN: -o %t3 \
; RUN: -r=%t.o,test,px \
; RUN: -r=%t.o,_ZTV1B, \
; RUN: -r=%t.o,_ZN1B1fEi, \
; RUN: -r=%t.o,_ZTV1B,px
; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR
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.B = type { %struct.A }
%struct.A = type { i32 (...)** }
@_ZTV1B = constant { [3 x i8*] } { [3 x i8*] [i8* undef, i8* undef, i8* undef] }, !type !0
; CHECK-IR-LABEL: define void @test
define void @test(i8* %b) {
entry:
; Ensure that traps are conditional. Invalid TYPE_ID can cause
; unconditional traps.
; CHECK-IR: br i1 {{.*}}, label %trap
%0 = bitcast i8* %b to i8**
%vtable2 = load i8*, i8** %0
%1 = tail call i1 @llvm.type.test(i8* %vtable2, metadata !"_ZTS1A")
br i1 %1, label %cont, label %trap
trap:
tail call void @llvm.trap()
unreachable
cont:
; CHECK-IR-LABEL: ret void
ret void
}
; CHECK-IR-LABEL: }
declare i1 @llvm.type.test(i8*, metadata)
declare void @llvm.trap()
declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a)
!0 = !{i64 16, !"_ZTS1A"}
!1 = !{i64 16, !"_ZTS1B"}