| Dan Gohman | 1880092 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -simplifycfg -S | grep {%outval = phi i32 .*mux} |
| Chris Lattner | 80b03a1 | 2008-07-13 22:23:11 +0000 | [diff] [blame] | 2 | ; PR2540 |
| 3 | ; Outval should end up with a select from 0/2, not all constants. |
| 4 | |
| 5 | 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-f80:32:32" |
| 6 | target triple = "i386-pc-linux-gnu" |
| 7 | @g_37 = common global i32 0 ; <i32*> [#uses=1] |
| 8 | @.str = internal constant [4 x i8] c"%d\0A\00" ; <[4 x i8]*> [#uses=1] |
| 9 | |
| 10 | define i32 @main() nounwind { |
| 11 | entry: |
| 12 | %l = load i32* @g_37, align 4 ; <i32> [#uses=1] |
| 13 | %cmpa = icmp ne i32 %l, 0 ; <i1> [#uses=3] |
| 14 | br i1 %cmpa, label %func_1.exit, label %mooseblock |
| 15 | |
| 16 | mooseblock: ; preds = %entry |
| 17 | %cmpb = icmp eq i1 %cmpa, false ; <i1> [#uses=2] |
| 18 | br i1 %cmpb, label %monkeyblock, label %beeblock |
| 19 | |
| 20 | monkeyblock: ; preds = %monkeyblock, %mooseblock |
| 21 | br i1 %cmpb, label %cowblock, label %monkeyblock |
| 22 | |
| 23 | beeblock: ; preds = %beeblock, %mooseblock |
| 24 | br i1 %cmpa, label %cowblock, label %beeblock |
| 25 | |
| 26 | cowblock: ; preds = %beeblock, %monkeyblock |
| 27 | %cowval = phi i32 [ 2, %beeblock ], [ 0, %monkeyblock ] ; <i32> [#uses=1] |
| 28 | br label %func_1.exit |
| 29 | |
| 30 | func_1.exit: ; preds = %cowblock, %entry |
| 31 | %outval = phi i32 [ %cowval, %cowblock ], [ 1, %entry ] ; <i32> [#uses=1] |
| 32 | %pout = tail call i32 (i8*, ...)* @printf( i8* noalias getelementptr ([4 x i8]* @.str, i32 0, i32 0), i32 %outval ) nounwind ; <i32> [#uses=0] |
| 33 | ret i32 0 |
| 34 | } |
| 35 | |
| 36 | declare i32 @printf(i8*, ...) nounwind |