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      1 ; RUN: llc %s -O0 -fast-isel -regalloc=fast -mcpu=i386 -o -
      2 ; PR4767
      3 
      4 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"
      5 target triple = "i386-apple-darwin10"
      6 
      7 define void @fn(x86_fp80 %x) nounwind ssp {
      8 entry:
      9   %x.addr = alloca x86_fp80                       ; <x86_fp80*> [#uses=5]
     10   store x86_fp80 %x, x86_fp80* %x.addr
     11   br i1 false, label %cond.true, label %cond.false
     12 
     13 cond.true:                                        ; preds = %entry
     14   %tmp = load x86_fp80* %x.addr                   ; <x86_fp80> [#uses=1]
     15   %tmp1 = load x86_fp80* %x.addr                  ; <x86_fp80> [#uses=1]
     16   %cmp = fcmp oeq x86_fp80 %tmp, %tmp1            ; <i1> [#uses=1]
     17   br i1 %cmp, label %if.then, label %if.end
     18 
     19 cond.false:                                       ; preds = %entry
     20   %tmp2 = load x86_fp80* %x.addr                  ; <x86_fp80> [#uses=1]
     21   %tmp3 = load x86_fp80* %x.addr                  ; <x86_fp80> [#uses=1]
     22   %cmp4 = fcmp une x86_fp80 %tmp2, %tmp3          ; <i1> [#uses=1]
     23   br i1 %cmp4, label %if.then, label %if.end
     24 
     25 if.then:                                          ; preds = %cond.false, %cond.true
     26   br label %if.end
     27 
     28 if.end:                                           ; preds = %if.then, %cond.false, %cond.true
     29   ret void
     30 }
     31 
     32 ; PR10575
     33 ; This produces a FP0 = IMPLICIT_DEF instruction.
     34 define void @__m_rankmerge_MOD_dindexmerge_() nounwind {
     35 entry:
     36   br label %"20"
     37 
     38 "20":                                             ; preds = %"23", %entry
     39     %0 = phi double [ undef, %entry ], [ %0, %"23" ]
     40     %1 = phi double [ 0.000000e+00, %entry ], [ %2, %"23" ]
     41     br i1 undef, label %"21", label %"23"
     42 
     43 "21":                                             ; preds = %"20"
     44     ret void
     45 
     46 "23":                                             ; preds = %"20"
     47     %2 = select i1 undef, double %0, double %1
     48     br label %"20"
     49 }
     50