| Chandler Carruth | a5a29f9 | 2012-07-02 12:47:22 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -instcombine -S | grep "load volatile" | count 2 |
| Chris Lattner | d9e3b5c | 2008-04-29 17:28:22 +0000 | [diff] [blame] | 2 | 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" |
| 3 | target triple = "i386-apple-darwin8" |
| 4 | @g_1 = internal global i32 0 ; <i32*> [#uses=3] |
| 5 | |
| 6 | define i32 @main() nounwind { |
| 7 | entry: |
| 8 | %tmp93 = icmp slt i32 0, 10 ; <i1> [#uses=0] |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 9 | %tmp34 = load volatile i32, i32* @g_1, align 4 ; <i32> [#uses=1] |
| Chris Lattner | d9e3b5c | 2008-04-29 17:28:22 +0000 | [diff] [blame] | 10 | br label %bb |
| 11 | |
| 12 | bb: ; preds = %bb, %entry |
| 13 | %b.0.reg2mem.0 = phi i32 [ 0, %entry ], [ %tmp6, %bb ] ; <i32> [#uses=1] |
| 14 | %tmp3.reg2mem.0 = phi i32 [ %tmp34, %entry ], [ %tmp3, %bb ] ; <i32> [#uses=1] |
| 15 | %tmp4 = add i32 %tmp3.reg2mem.0, 5 ; <i32> [#uses=1] |
| Chris Lattner | 6a144a2 | 2011-11-27 06:54:59 +0000 | [diff] [blame] | 16 | store volatile i32 %tmp4, i32* @g_1, align 4 |
| Chris Lattner | d9e3b5c | 2008-04-29 17:28:22 +0000 | [diff] [blame] | 17 | %tmp6 = add i32 %b.0.reg2mem.0, 1 ; <i32> [#uses=2] |
| 18 | %tmp9 = icmp slt i32 %tmp6, 10 ; <i1> [#uses=1] |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 19 | %tmp3 = load volatile i32, i32* @g_1, align 4 ; <i32> [#uses=1] |
| Chris Lattner | d9e3b5c | 2008-04-29 17:28:22 +0000 | [diff] [blame] | 20 | br i1 %tmp9, label %bb, label %bb11 |
| 21 | |
| 22 | bb11: ; preds = %bb |
| 23 | ret i32 0 |
| 24 | } |
| 25 | |