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add a testcase for r125827

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llvm-svn: 125831
This commit is contained in:
Chris Lattner 2011-02-18 05:05:01 +00:00
parent f6fa19a03f
commit 6bf82a073a
1 changed files with 24 additions and 0 deletions
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test/Transforms/LoopUnroll/basic.ll Normal file
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; RUN: opt < %s -loop-unroll -S | FileCheck %s
; This should not unroll since the address of the loop header is taken.
; CHECK: @test1
; CHECK: store i8* blockaddress(@test1, %l1), i8** %P
; CHECK: l1:
; CHECK-NEXT: phi i32
; rdar://8287027
define i32 @test1(i8** %P) nounwind ssp {
entry:
store i8* blockaddress(@test1, %l1), i8** %P
br label %l1
l1: ; preds = %l1, %entry
%x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
%inc = add nsw i32 %x.0, 1
%exitcond = icmp eq i32 %inc, 3
br i1 %exitcond, label %l2, label %l1
l2: ; preds = %l1
ret i32 0
}