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Testcase for missed merge opportunity

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2477 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2002-05-06 03:11:32 +00:00
parent 9c1291c85e
commit c3a53f9aa8
1 changed files with 22 additions and 0 deletions
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test/Transforms/SimplifyCFG/2002-05-05-EmptyBlockMerge.ll Normal file
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; Basic block #2 should be merged into BB #3!
;
; RUN: if as < %s | opt -dce | dis | grep 'br label'
; RUN: then exit 1
; RUN: else exit 0
; RUN: fi
;
void "cprop_test12"(int* %data) {
bb0:
%reg108 = load int* %data
%cond218 = setne int %reg108, 5
br bool %cond218, label %bb3, label %bb2
bb2:
br label %bb3
bb3:
%reg117 = phi int [ 110, %bb2 ], [ %reg108, %bb0 ]
store int %reg117, int* %data
ret void
}