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; RUN: opt -S -passes=lowertypetests %s | llc -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers | FileCheck %s
; Tests that we correctly assign indexes for control flow integrity.
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
@0 = private unnamed_addr constant [2 x ptr] [ptr @f, ptr @g], align 16
; CHECK-LABEL: h:
; CHECK-NOT: .indidx
define void @h() !type !0 {
ret void
}
; CHECK-LABEL: f:
; CHECK: .indidx 1
define void @f() !type !0 {
ret void
}
; CHECK-LABEL: g:
; CHECK: .indidx 2
define void @g() !type !1 {
ret void
}
!0 = !{i32 0, !"typeid1"}
!1 = !{i32 0, !"typeid2"}
declare i1 @llvm.type.test(ptr %ptr, metadata %bitset) nounwind readnone
declare void @llvm.trap() nounwind noreturn
; CHECK-LABEL: foo:
; CHECK: br_if
; CHECK: br_if
; CHECK: unreachable
define i1 @foo(ptr %p) {
%x = call i1 @llvm.type.test(ptr %p, metadata !"typeid1")
br i1 %x, label %contx, label %trap
trap:
tail call void @llvm.trap() #1
unreachable
contx:
%y = call i1 @llvm.type.test(ptr %p, metadata !"typeid2")
br i1 %y, label %conty, label %trap
conty:
%z = add i1 %x, %y
ret i1 %z
}
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