| Chris Lattner | 67982da | 2011-02-18 05:05:01 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -loop-unroll -S | FileCheck %s |
| 2 | |
| 3 | |
| 4 | ; This should not unroll since the address of the loop header is taken. |
| 5 | |
| 6 | ; CHECK: @test1 |
| 7 | ; CHECK: store i8* blockaddress(@test1, %l1), i8** %P |
| 8 | ; CHECK: l1: |
| 9 | ; CHECK-NEXT: phi i32 |
| 10 | ; rdar://8287027 |
| 11 | define i32 @test1(i8** %P) nounwind ssp { |
| 12 | entry: |
| 13 | store i8* blockaddress(@test1, %l1), i8** %P |
| 14 | br label %l1 |
| 15 | |
| 16 | l1: ; preds = %l1, %entry |
| 17 | %x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ] |
| 18 | %inc = add nsw i32 %x.0, 1 |
| 19 | %exitcond = icmp eq i32 %inc, 3 |
| 20 | br i1 %exitcond, label %l2, label %l1 |
| 21 | |
| 22 | l2: ; preds = %l1 |
| 23 | ret i32 0 |
| 24 | } |