llvm-for-llvmta/test/CodeGen/WinCFGuard/cfguard-cast.ll

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2022-04-25 10:02:23 +02:00
; RUN: llc < %s -mtriple=x86_64-pc-windows-msvc | FileCheck %s
; Check how constant function pointer casts are handled.
declare void @unprototyped(...)
define i32 @call_unprototyped() {
call void bitcast (void (...)* @unprototyped to void ()*)()
ret i32 0
}
; CHECK-LABEL: call_unprototyped:
; CHECK: callq unprototyped
; CHECK: xorl %eax, %eax
; CHECK: retq
declare void @escaped_cast()
define i32 @escape_it_with_cast(i8** %p) {
store i8* bitcast (void ()* @escaped_cast to i8*), i8** %p
ret i32 0
}
declare void @dead_constant()
!llvm.module.flags = !{!0}
!0 = !{i32 2, !"cfguard", i32 1}
!dead_constant_root = !{!1}
!1 = !DITemplateValueParameter(name: "dead_constant", value: i8* bitcast (void ()* @dead_constant to i8*))
; CHECK-LABEL: .section .gfids$y,"dr"
; CHECK-NEXT: .symidx escaped_cast
; CHECK-NOT: .symidx