|  | ; RUN: llc -O1 -verify-coalescing < %s | 
|  | ; PR12495 | 
|  | target datalayout = | 
|  | "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" | 
|  | target triple = "x86_64-apple-macosx10.7.0" | 
|  |  | 
|  | define void @func(ptr nocapture) nounwind uwtable ssp align 2 { | 
|  | br i1 undef, label %4, label %2 | 
|  |  | 
|  | ; <label>:2                                       ; preds = %1 | 
|  | %3 = tail call double @foo() nounwind | 
|  | br label %4 | 
|  |  | 
|  | ; <label>:4                                       ; preds = %2, %1 | 
|  | %5 = phi double [ %3, %2 ], [ 0.000000e+00, %1 ] | 
|  | %6 = fsub double %5, undef | 
|  | %7 = fcmp olt double %6, 0.000000e+00 | 
|  | %8 = select i1 %7, double 0.000000e+00, double %6 | 
|  | %9 = fcmp olt double undef, 0.000000e+00 | 
|  | %10 = fcmp olt double %8, undef | 
|  | %11 = or i1 %9, %10 | 
|  | br i1 %11, label %12, label %14 | 
|  |  | 
|  | ; <label>:12                                      ; preds = %4 | 
|  | %13 = tail call double @fmod(double %8, double 0.000000e+00) nounwind | 
|  | unreachable | 
|  |  | 
|  | ; <label>:14                                      ; preds = %4 | 
|  | ret void | 
|  | } | 
|  |  | 
|  | declare double @foo() | 
|  |  | 
|  | declare double @fmod(double, double) |