| Michael Ilseman | e2754dc | 2012-12-14 22:08:26 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -instcombine -S | FileCheck %s |
| 2 | |
| 3 | ; CHECK: no_crash |
| 4 | define float @no_crash(float %a) nounwind { |
| 5 | entry: |
| 6 | br label %for.body |
| 7 | |
| 8 | for.body: |
| 9 | %sum.057 = phi float [ 0.000000e+00, %entry ], [ %add5, %bb0 ] |
| 10 | %add5 = fadd float %sum.057, %a ; PR14592 |
| 11 | br i1 undef, label %bb0, label %end |
| 12 | |
| 13 | bb0: |
| 14 | br label %for.body |
| 15 | |
| 16 | end: |
| 17 | ret float %add5 |
| 18 | } |
| 19 | |
| David Majnemer | 7e2b988 | 2014-11-03 21:55:12 +0000 | [diff] [blame] | 20 | ; CHECK-LABEL: @pr21377( |
| David Majnemer | d28edfe | 2014-11-04 05:17:58 +0000 | [diff] [blame] | 21 | define void @pr21377(i32) { |
| Michael Ilseman | e2754dc | 2012-12-14 22:08:26 +0000 | [diff] [blame] | 22 | entry: |
| David Majnemer | d28edfe | 2014-11-04 05:17:58 +0000 | [diff] [blame] | 23 | br label %while.body |
| Michael Ilseman | e2754dc | 2012-12-14 22:08:26 +0000 | [diff] [blame] | 24 | |
| David Majnemer | d28edfe | 2014-11-04 05:17:58 +0000 | [diff] [blame] | 25 | while.body: ; preds = %if.end, %entry |
| 26 | %phi1 = phi i64 [ undef, %entry ], [ %or2, %if.end ] |
| 27 | %zext = zext i32 %0 to i64 |
| 28 | br i1 undef, label %if.end, label %if.else |
| Michael Ilseman | e2754dc | 2012-12-14 22:08:26 +0000 | [diff] [blame] | 29 | |
| David Majnemer | d28edfe | 2014-11-04 05:17:58 +0000 | [diff] [blame] | 30 | if.else: ; preds = %while.body |
| 31 | %or1 = or i64 %phi1, %zext |
| 32 | %and = and i64 %or1, 4294967295 |
| 33 | br label %if.end |
| Michael Ilseman | e2754dc | 2012-12-14 22:08:26 +0000 | [diff] [blame] | 34 | |
| David Majnemer | d28edfe | 2014-11-04 05:17:58 +0000 | [diff] [blame] | 35 | if.end: ; preds = %if.else, %while.body |
| 36 | %phi2 = phi i64 [ %and, %if.else ], [ undef, %while.body ] |
| 37 | %or2 = or i64 %phi2, %zext |
| 38 | br label %while.body |
| Michael Ilseman | e2754dc | 2012-12-14 22:08:26 +0000 | [diff] [blame] | 39 | } |