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; RUN: llc %s -o - -verify-machineinstrs | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-unknown"
; The machine level BranchFolding pass will try to remove the 'unreachable' block
; and rewrite 'entry' to jump to the block 'unreachable' falls through to.
; That will be a landing pad and result in 'entry' jumping to 2 landing pads.
; This tests that we don't do this change when the fallthrough is itself a landing
; pad.
declare i32 @__gxx_personality_v0(...)
declare void @foo()
; Function Attrs: noreturn
declare void @_throw()
; CHECK-LABEL: @main
; CHECK: %unreachable
define i32 @main(i8* %cleanup) {
entry:
invoke void @_throw() #0
to label %unreachable unwind label %catch.dispatch9
catch.dispatch9: ; preds = %entry
%tmp13 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
cleanup
catch i8* null
invoke void @_throw() #0
to label %unreachable unwind label %lpad31
lpad31: ; preds = %catch.dispatch9
%tmp20 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
cleanup
catch i8* null
call void @foo()
unreachable
unreachable: ; preds = %catch.dispatch9, %entry
unreachable
}
attributes #0 = { noreturn }
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