| Dan Gohman | 1880092 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -instcombine -S | grep {volatile load} | count 2 |
| Chris Lattner | 9233c12 | 2008-04-29 17:13:43 +0000 | [diff] [blame] | 2 | ; PR2262 |
| 3 | target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" |
| 4 | target triple = "i386-apple-darwin8" |
| 5 | @g_1 = internal global i32 0 ; <i32*> [#uses=3] |
| Chris Lattner | 9233c12 | 2008-04-29 17:13:43 +0000 | [diff] [blame] | 6 | |
| Chris Lattner | 53bcf36 | 2008-04-29 17:25:32 +0000 | [diff] [blame] | 7 | define i32 @main(i32 %i) nounwind { |
| Chris Lattner | 9233c12 | 2008-04-29 17:13:43 +0000 | [diff] [blame] | 8 | entry: |
| Chris Lattner | 53bcf36 | 2008-04-29 17:25:32 +0000 | [diff] [blame] | 9 | %tmp93 = icmp slt i32 %i, 10 ; <i1> [#uses=0] |
| Chris Lattner | 9233c12 | 2008-04-29 17:13:43 +0000 | [diff] [blame] | 10 | %tmp34 = volatile load i32* @g_1, align 4 ; <i32> [#uses=1] |
| Chris Lattner | 53bcf36 | 2008-04-29 17:25:32 +0000 | [diff] [blame] | 11 | br i1 %tmp93, label %bb11, label %bb |
| Chris Lattner | 9233c12 | 2008-04-29 17:13:43 +0000 | [diff] [blame] | 12 | |
| 13 | bb: ; preds = %bb, %entry |
| Chris Lattner | 9233c12 | 2008-04-29 17:13:43 +0000 | [diff] [blame] | 14 | %tmp3 = volatile load i32* @g_1, align 4 ; <i32> [#uses=1] |
| Chris Lattner | 53bcf36 | 2008-04-29 17:25:32 +0000 | [diff] [blame] | 15 | br label %bb11 |
| Chris Lattner | 9233c12 | 2008-04-29 17:13:43 +0000 | [diff] [blame] | 16 | |
| 17 | bb11: ; preds = %bb |
| Chris Lattner | 53bcf36 | 2008-04-29 17:25:32 +0000 | [diff] [blame] | 18 | %tmp4 = phi i32 [ %tmp34, %entry ], [ %tmp3, %bb ] ; <i32> [#uses=1] |
| 19 | ret i32 %tmp4 |
| Chris Lattner | 9233c12 | 2008-04-29 17:13:43 +0000 | [diff] [blame] | 20 | } |
| 21 | |