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; Test that if an invoked function is inlined, and if that function cannot
; throw, that the dead handler is now unreachable.
; RUN: opt < %s -passes=inline,simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
declare void @might_throw()
define internal i32 @callee() personality ptr @__gxx_personality_v0 {
enrty:
invoke void @might_throw()
to label %cont unwind label %exc
cont:
ret i32 0
exc:
%exn = landingpad {ptr, i32}
cleanup
ret i32 1
}
; caller returns true if might_throw throws an exception... callee cannot throw.
define i32 @caller() personality ptr @__gxx_personality_v0 {
; CHECK-LABEL: define i32 @caller() personality ptr @__gxx_personality_v0
enrty:
%X = invoke i32 @callee()
to label %cont unwind label %UnreachableExceptionHandler
; CHECK-NOT: @callee
; CHECK: invoke void @might_throw()
; CHECK: to label %[[C:.*]] unwind label %[[E:.*]]
; CHECK: [[E]]:
; CHECK: landingpad
; CHECK: cleanup
; CHECK: br label %[[C]]
cont:
; CHECK: [[C]]:
ret i32 %X
; CHECK: %[[PHI:.*]] = phi i32
; CHECK: ret i32 %[[PHI]]
UnreachableExceptionHandler:
; CHECK-NOT: UnreachableExceptionHandler:
%exn = landingpad {ptr, i32}
cleanup
ret i32 -1
; CHECK-NOT: ret i32 -1
}
; CHECK: }
declare i32 @__gxx_personality_v0(...)
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