| Dan Gohman | 8566963 | 2010-02-25 06:57:05 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -S -indvars -loop-deletion -simplifycfg | FileCheck %s |
| 2 | ; PR5794 |
| 3 | |
| 4 | ; Indvars and loop deletion should be able to eliminate all looping |
| 5 | ; in this testcase. |
| 6 | |
| 7 | ; CHECK: define i32 @pmat(i32 %m, i32 %n, double* %y) nounwind { |
| 8 | ; CHECK-NEXT: entry: |
| 9 | ; CHECK-NEXT: ret i32 0 |
| 10 | ; CHECK-NEXT: } |
| 11 | |
| 12 | target datalayout = "e-p:64:64:64" |
| 13 | |
| 14 | define i32 @pmat(i32 %m, i32 %n, double* %y) nounwind { |
| 15 | entry: |
| 16 | %cmp4 = icmp sgt i32 %m, 0 |
| 17 | br i1 %cmp4, label %bb.n10, label %w.e12 |
| 18 | |
| 19 | w.c: |
| 20 | %cmp = icmp slt i32 %inc11, %m |
| 21 | br i1 %cmp, label %w.c2.p, label %w.c.w.e12c |
| 22 | |
| 23 | w.c.w.e12c: |
| 24 | br label %w.c.w.e12c.s |
| 25 | |
| 26 | w.c.w.e12c.s: |
| 27 | br label %w.e12 |
| 28 | |
| 29 | bb.n10: |
| 30 | %cmp51 = icmp sgt i32 %n, 0 |
| 31 | br i1 %cmp51, label %bb.n10.w.c.w.e12c.sc, label %bb.n10.bb.n10.sc |
| 32 | |
| 33 | bb.n10.bb.n10.sc: |
| 34 | br label %bb.n10.s |
| 35 | |
| 36 | bb.n10.w.c.w.e12c.sc: |
| 37 | br label %w.c.w.e12c.s |
| 38 | |
| 39 | bb.n10.s: |
| 40 | br label %w.c2.p |
| 41 | |
| 42 | w.c2.p: |
| 43 | %i.05 = phi i32 [ 0, %bb.n10.s ], [ %inc11, %w.c ] |
| 44 | br i1 false, label %bb.n, label %w.e |
| 45 | |
| 46 | w.c2: |
| 47 | br i1 undef, label %w.b6, label %w.c2.w.ec |
| 48 | |
| 49 | w.c2.w.ec: |
| 50 | br label %w.e |
| 51 | |
| 52 | bb.n: |
| 53 | br label %w.b6 |
| 54 | |
| 55 | w.b6: |
| 56 | br label %w.c2 |
| 57 | |
| 58 | w.e: |
| 59 | %i.08 = phi i32 [ undef, %w.c2.w.ec ], [ %i.05, %w.c2.p ] |
| 60 | %inc11 = add nsw i32 %i.08, 1 |
| 61 | br label %w.c |
| 62 | |
| 63 | w.e12: |
| 64 | ret i32 0 |
| 65 | } |