| Dan Gohman | a25e81a | 2009-10-26 15:32:57 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=x86-64 | grep cvtsi2sd |
| 2 | |
| 3 | ; LSR previously eliminated the sitofp by introducing an induction |
| 4 | ; variable which stepped by a bogus ((double)UINT32_C(-1)). It's theoretically |
| 5 | ; possible to eliminate the sitofp using a proper -1.0 step though; this |
| 6 | ; test should be changed if that is done. |
| 7 | |
| 8 | define void @foo(i32 %N) nounwind { |
| 9 | entry: |
| 10 | %0 = icmp slt i32 %N, 0 ; <i1> [#uses=1] |
| 11 | br i1 %0, label %bb, label %return |
| 12 | |
| 13 | bb: ; preds = %bb, %entry |
| 14 | %i.03 = phi i32 [ 0, %entry ], [ %2, %bb ] ; <i32> [#uses=2] |
| 15 | %1 = sitofp i32 %i.03 to double ; <double> [#uses=1] |
| 16 | tail call void @bar(double %1) nounwind |
| 17 | %2 = add nsw i32 %i.03, -1 ; <i32> [#uses=2] |
| 18 | %exitcond = icmp eq i32 %2, %N ; <i1> [#uses=1] |
| 19 | br i1 %exitcond, label %return, label %bb |
| 20 | |
| 21 | return: ; preds = %bb, %entry |
| 22 | ret void |
| 23 | } |
| 24 | |
| 25 | declare void @bar(double) |