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Make sure that LCSSA works properly when it encounters an exit block that has

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more than one predecessor inside the loop.

llvm-svn: 28749
This commit is contained in:
Owen Anderson 2006-06-12 07:05:47 +00:00
parent 15b85dbfa5
commit 4796bc9bda
1 changed files with 28 additions and 0 deletions
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28
test/Regression/Transforms/LCSSA/2006-06-12-MultipleExitsSameBlock.ll Normal file
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; RUN: llvm-as < %s | opt -lcssa | llvm-dis | grep "%X.1.lcssa" &&
; RUN: llvm-as < %s | opt -lcssa | llvm-dis | not grep "%X.1.lcssa1"
declare bool %c1()
declare bool %c2()
int %foo() {
entry:
br label %loop_begin
loop_begin:
br bool true, label %loop_body.1, label %loop_exit2
loop_body.1:
%X.1 = add int 0, 1
%rel.1 = call bool %c1()
br bool %rel.1, label %loop_exit, label %loop_body.2
loop_body.2:
%rel.2 = call bool %c2()
br bool %rel.2, label %loop_exit, label %loop_begin
loop_exit:
ret int %X.1
loop_exit2:
ret int 1
}