| ; RUN: opt < %s -simplifycfg -S | grep "%outval = phi i32 .*mux" |
| ; PR2540 |
| ; Outval should end up with a select from 0/2, not all constants. |
| |
| 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" |
| target triple = "i386-pc-linux-gnu" |
| @g_37 = common global i32 0 ; <i32*> [#uses=1] |
| @.str = internal constant [4 x i8] c"%d\0A\00" ; <[4 x i8]*> [#uses=1] |
| |
| define i32 @main() nounwind { |
| entry: |
| %l = load i32* @g_37, align 4 ; <i32> [#uses=1] |
| %cmpa = icmp ne i32 %l, 0 ; <i1> [#uses=3] |
| br i1 %cmpa, label %func_1.exit, label %mooseblock |
| |
| mooseblock: ; preds = %entry |
| %cmpb = icmp eq i1 %cmpa, false ; <i1> [#uses=2] |
| br i1 %cmpb, label %monkeyblock, label %beeblock |
| |
| monkeyblock: ; preds = %monkeyblock, %mooseblock |
| br i1 %cmpb, label %cowblock, label %monkeyblock |
| |
| beeblock: ; preds = %beeblock, %mooseblock |
| br i1 %cmpa, label %cowblock, label %beeblock |
| |
| cowblock: ; preds = %beeblock, %monkeyblock |
| %cowval = phi i32 [ 2, %beeblock ], [ 0, %monkeyblock ] ; <i32> [#uses=1] |
| br label %func_1.exit |
| |
| func_1.exit: ; preds = %cowblock, %entry |
| %outval = phi i32 [ %cowval, %cowblock ], [ 1, %entry ] ; <i32> [#uses=1] |
| %pout = tail call i32 (i8*, ...)* @printf( i8* noalias getelementptr ([4 x i8]* @.str, i32 0, i32 0), i32 %outval ) nounwind ; <i32> [#uses=0] |
| ret i32 0 |
| } |
| |
| declare i32 @printf(i8*, ...) nounwind |
