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New testcase that is not actually handled yet, but should be in the future.

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This is here to remind me to get back to this after a while.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10336 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-12-09 16:26:42 +00:00
parent aa2a47d813
commit bb9fc2c461
1 changed files with 31 additions and 0 deletions
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31
test/Transforms/TailCallElim/tail_call_with_branch.ll Normal file
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; This testcase is due to tail-duplication not wanting to copy the return
; instruction into the terminating blocks because there was other code
; optimized out of the function after the taildup happened.
; RUN: llvm-as < %s | opt -tailcallelim | llvm-dis | not grep call
int %t4(int %a) {
entry:
%tmp.1 = and int %a, 1
%tmp.2 = cast int %tmp.1 to bool
br bool %tmp.2, label %then.0, label %else.0
then.0:
%tmp.5 = add int %a, -1
%tmp.3 = call int %t4( int %tmp.5 )
br label %return
else.0:
%tmp.7 = setne int %a, 0
br bool %tmp.7, label %then.1, label %return
then.1:
%tmp.11 = add int %a, -2
%tmp.9 = call int %t4( int %tmp.11 )
br label %return
return:
%result.0 = phi int [ 0, %else.0 ], [ %tmp.3, %then.0 ], [ %tmp.9, %then.1 ]
ret int %result.0
}