| Dan Gohman | bd59d7b | 2009-06-14 22:58:51 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | opt -indvars | llvm-dis > %t |
| 2 | ; RUN: grep {%exitcond = icmp eq i64 %indvar.next, %n} %t |
| 3 | ; RUN: grep {getelementptr i8\\* %A, i64 %indvar} %t |
| 4 | ; RUN: grep getelementptr %t | count 1 |
| 5 | ; RUN: grep add %t | count 1 |
| 6 | ; RUN: not grep scevgep %t |
| 7 | ; RUN: not grep ptrtoint %t |
| 8 | |
| 9 | ; Indvars should be able to expand the pointer-arithmetic |
| 10 | ; IV into an integer IV indexing into a simple getelementptr. |
| 11 | |
| 12 | target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64" |
| 13 | |
| 14 | define void @foo(i8* %A, i64 %n) nounwind { |
| 15 | entry: |
| 16 | %0 = icmp eq i64 %n, 0 ; <i1> [#uses=1] |
| 17 | br i1 %0, label %return, label %bb.nph |
| 18 | |
| 19 | bb.nph: ; preds = %entry |
| 20 | %1 = getelementptr i8* %A, i64 %n ; <i8*> [#uses=1] |
| 21 | br label %bb |
| 22 | |
| 23 | bb: ; preds = %bb1, %bb.nph |
| 24 | %q.01 = phi i8* [ %2, %bb1 ], [ %A, %bb.nph ] ; <i8*> [#uses=2] |
| 25 | store i8 0, i8* %q.01, align 1 |
| 26 | %2 = getelementptr i8* %q.01, i64 1 ; <i8*> [#uses=2] |
| 27 | br label %bb1 |
| 28 | |
| 29 | bb1: ; preds = %bb |
| 30 | %3 = icmp eq i8* %1, %2 ; <i1> [#uses=1] |
| 31 | br i1 %3, label %bb1.return_crit_edge, label %bb |
| 32 | |
| 33 | bb1.return_crit_edge: ; preds = %bb1 |
| 34 | br label %return |
| 35 | |
| 36 | return: ; preds = %bb1.return_crit_edge, %entry |
| 37 | ret void |
| 38 | } |