blob: 7471d8b34620c3898eeb57e789492e11efcf937e [file] [log] [blame]
; Test for a problem afflicting several C++ programs in the testsuite. The
; instcombine pass is trying to get rid of the cast in the invoke instruction,
; inserting a cast of the return value after the PHI instruction, but which is
; used by the PHI instruction. This is bad: because of the semantics of the
; invoke instruction, we really cannot perform this transformation at all at
; least without splitting the critical edge.
; RUN: opt < %s -instcombine -disable-output
declare i8* @test()
define i32 @foo() personality i32 (...)* @__gxx_personality_v0 {
br i1 true, label %cont, label %call
call: ; preds = %entry
%P = invoke i32* bitcast (i8* ()* @test to i32* ()*)( )
to label %cont unwind label %N ; <i32*> [#uses=1]
cont: ; preds = %call, %entry
%P2 = phi i32* [ %P, %call ], [ null, %entry ] ; <i32*> [#uses=1]
%V = load i32, i32* %P2 ; <i32> [#uses=1]
ret i32 %V
N: ; preds = %call
%exn = landingpad {i8*, i32}
ret i32 0
declare i32 @__gxx_personality_v0(...)