| Peter Collingbourne | 9a03c73 | 2012-05-20 01:32:09 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -loop-unswitch -disable-output |
| 2 | ; PR12887 |
| 3 | target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" |
| 4 | target triple = "x86_64-unknown-linux-gnu" |
| 5 | |
| 6 | @a = common global i32 0, align 4 |
| 7 | @c = common global i32 0, align 4 |
| 8 | @b = common global i32 0, align 4 |
| 9 | |
| 10 | define void @func() noreturn nounwind uwtable { |
| 11 | entry: |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 12 | %0 = load i32, i32* @a, align 4 |
| Peter Collingbourne | 9a03c73 | 2012-05-20 01:32:09 +0000 | [diff] [blame] | 13 | %tobool = icmp eq i32 %0, 0 |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 14 | %1 = load i32, i32* @b, align 4 |
| Peter Collingbourne | 9a03c73 | 2012-05-20 01:32:09 +0000 | [diff] [blame] | 15 | br label %while.body |
| 16 | |
| 17 | while.body: ; preds = %while.body, %entry |
| 18 | %d.0 = phi i8 [ undef, %entry ], [ %conv2, %while.body ] |
| 19 | %conv = sext i8 %d.0 to i32 |
| 20 | %cond = select i1 %tobool, i32 0, i32 %conv |
| 21 | %conv11 = zext i8 %d.0 to i32 |
| 22 | %add = add i32 %1, %conv11 |
| 23 | %conv2 = trunc i32 %add to i8 |
| 24 | br label %while.body |
| 25 | } |