| Evan Cheng | 8239daf | 2010-11-03 00:45:17 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -mtriple=arm-apple-darwin -mcpu=cortex-a8 | FileCheck %s |
| 2 | ; rdar://8598427 |
| 3 | ; Adjust if-converter heuristics to avoid predicating vmrs which can cause |
| 4 | ; significant regression. |
| 5 | |
| 6 | %struct.xyz_t = type { double, double, double } |
| 7 | |
| 8 | define i32 @effie(i32 %tsets, %struct.xyz_t* nocapture %p, i32 %a, i32 %b, i32 %c) nounwind readonly noinline { |
| 9 | ; CHECK: effie: |
| 10 | entry: |
| 11 | %0 = icmp sgt i32 %tsets, 0 |
| 12 | br i1 %0, label %bb.nph, label %bb6 |
| 13 | |
| 14 | bb.nph: ; preds = %entry |
| 15 | %1 = add nsw i32 %b, %a |
| 16 | %2 = add nsw i32 %1, %c |
| 17 | br label %bb |
| 18 | |
| 19 | bb: ; preds = %bb4, %bb.nph |
| 20 | ; CHECK: vcmpe.f64 |
| 21 | ; CHECK: vmrs apsr_nzcv, fpscr |
| 22 | %r.19 = phi i32 [ 0, %bb.nph ], [ %r.0, %bb4 ] |
| 23 | %n.08 = phi i32 [ 0, %bb.nph ], [ %10, %bb4 ] |
| 24 | %scevgep10 = getelementptr inbounds %struct.xyz_t* %p, i32 %n.08, i32 0 |
| 25 | %scevgep11 = getelementptr %struct.xyz_t* %p, i32 %n.08, i32 1 |
| 26 | %3 = load double* %scevgep10, align 4 |
| 27 | %4 = load double* %scevgep11, align 4 |
| 28 | %5 = fcmp uge double %3, %4 |
| 29 | br i1 %5, label %bb3, label %bb1 |
| 30 | |
| 31 | bb1: ; preds = %bb |
| 32 | ; CHECK-NOT: it |
| 33 | ; CHECK-NOT: vcmpemi |
| 34 | ; CHECK-NOT: vmrsmi |
| 35 | ; CHECK: vcmpe.f64 |
| 36 | ; CHECK: vmrs apsr_nzcv, fpscr |
| 37 | %scevgep12 = getelementptr %struct.xyz_t* %p, i32 %n.08, i32 2 |
| 38 | %6 = load double* %scevgep12, align 4 |
| 39 | %7 = fcmp uge double %3, %6 |
| 40 | br i1 %7, label %bb3, label %bb2 |
| 41 | |
| 42 | bb2: ; preds = %bb1 |
| 43 | %8 = add nsw i32 %2, %r.19 |
| 44 | br label %bb4 |
| 45 | |
| 46 | bb3: ; preds = %bb1, %bb |
| 47 | %9 = add nsw i32 %r.19, 1 |
| 48 | br label %bb4 |
| 49 | |
| 50 | bb4: ; preds = %bb3, %bb2 |
| 51 | %r.0 = phi i32 [ %9, %bb3 ], [ %8, %bb2 ] |
| 52 | %10 = add nsw i32 %n.08, 1 |
| 53 | %exitcond = icmp eq i32 %10, %tsets |
| 54 | br i1 %exitcond, label %bb6, label %bb |
| 55 | |
| 56 | bb6: ; preds = %bb4, %entry |
| 57 | %r.1.lcssa = phi i32 [ 0, %entry ], [ %r.0, %bb4 ] |
| 58 | ret i32 %r.1.lcssa |
| 59 | } |