1 ; RUN: opt < %s -simplifycfg -S | grep "%outval = phi i32 .*mux" 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 37
