target triple = "aarch64-pc-windows-msvc"
declare void @func()
define void @test(ptr %p) personality ptr @__CxxFrameHandler3 {
%v0 = load i32, ptr %p
%v1 = load i32, ptr %p
%xor = xor i32 %v0, %v1
%cmp = icmp eq i32 %xor, 0
br i1 %cmp, label %exit, label %bb
bb:
invoke void @func()
to label %exit unwind label %unwind
unwind:
%cp = cleanuppad within none []
store volatile i32 0, ptr %p
cleanupret from %cp unwind to caller
exit:
ret void
}
declare i32 @__CxxFrameHandler3(...)Produces something like this:
$stateUnwindMap$test:
.word -1 // ToState
.word "?dtor$-1@?0?test@4HA"@IMGREL // Action
Note the ?dtor$-1 referring to an unnumbered MBB. This ultimately causes linker errors.
Only observed on AArch64 Windows.
Produces something like this:
Note the
?dtor$-1referring to an unnumbered MBB. This ultimately causes linker errors.Only observed on AArch64 Windows.