1 ; RUN: opt -S -lowertypetests < %s | llc -asm-verbose=false -disable-wasm-fallthrough-return-opt | FileCheck %s 2 3 ; Tests that we correctly assign indexes for control flow integrity. 4 5 target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" 6 target triple = "wasm32-unknown-unknown" 7 8 @0 = private unnamed_addr constant [2 x void (...)*] [void (...)* bitcast (void ()* @f to void (...)*), void (...)* bitcast (void ()* @g to void (...)*)], align 16 9 10 ; CHECK-LABEL: h: 11 ; CHECK-NOT: .indidx 12 define void @h() !type !0 { 13 ret void 14 } 15 16 ; CHECK-LABEL: f: 17 ; CHECK: .indidx 1 18 define void @f() !type !0 { 19 ret void 20 } 21 22 ; CHECK-LABEL: g: 23 ; CHECK: .indidx 2 24 define void @g() !type !1 { 25 ret void 26 } 27 28 !0 = !{i32 0, !"typeid1"} 29 !1 = !{i32 0, !"typeid2"} 30 31 declare i1 @llvm.type.test(i8* %ptr, metadata %bitset) nounwind readnone 32 declare void @llvm.trap() nounwind noreturn 33 34 ; CHECK-LABEL: foo: 35 ; CHECK: br_if 36 ; CHECK: br_if 37 ; CHECK: unreachable 38 define i1 @foo(i8* %p) { 39 %x = call i1 @llvm.type.test(i8* %p, metadata !"typeid1") 40 br i1 %x, label %contx, label %trap 41 42 trap: 43 tail call void @llvm.trap() #1 44 unreachable 45 46 contx: 47 %y = call i1 @llvm.type.test(i8* %p, metadata !"typeid2") 48 br i1 %y, label %conty, label %trap 49 50 conty: 51 %z = add i1 %x, %y 52 ret i1 %z 53 } 54
