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      1 ; RUN: llc < %s -O3
      2 ; PR4626
      3 ; ModuleID = '<stdin>'
      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-f80:32:32"
      5 target triple = "i386-pc-linux-gnu"
      6 @g_3 = common global i8 0, align 1		; <i8*> [#uses=2]
      7 
      8 define signext i8 @safe_mul_func_int16_t_s_s(i32 %_si1, i8 signext %_si2) nounwind readnone {
      9 entry:
     10 	%tobool = icmp eq i32 %_si1, 0		; <i1> [#uses=1]
     11 	%cmp = icmp sgt i8 %_si2, 0		; <i1> [#uses=2]
     12 	%or.cond = or i1 %cmp, %tobool		; <i1> [#uses=1]
     13 	br i1 %or.cond, label %lor.rhs, label %land.lhs.true3
     14 
     15 land.lhs.true3:		; preds = %entry
     16 	%conv5 = sext i8 %_si2 to i32		; <i32> [#uses=1]
     17 	%cmp7 = icmp slt i32 %conv5, %_si1		; <i1> [#uses=1]
     18 	br i1 %cmp7, label %cond.end, label %lor.rhs
     19 
     20 lor.rhs:		; preds = %land.lhs.true3, %entry
     21 	%cmp10.not = icmp slt i32 %_si1, 1		; <i1> [#uses=1]
     22 	%or.cond23 = and i1 %cmp, %cmp10.not		; <i1> [#uses=1]
     23 	br i1 %or.cond23, label %lor.end, label %cond.false
     24 
     25 lor.end:		; preds = %lor.rhs
     26 	%tobool19 = icmp ne i8 %_si2, 0		; <i1> [#uses=2]
     27 	%lor.ext = zext i1 %tobool19 to i32		; <i32> [#uses=1]
     28 	br i1 %tobool19, label %cond.end, label %cond.false
     29 
     30 cond.false:		; preds = %lor.end, %lor.rhs
     31 	%conv21 = sext i8 %_si2 to i32		; <i32> [#uses=1]
     32 	br label %cond.end
     33 
     34 cond.end:		; preds = %cond.false, %lor.end, %land.lhs.true3
     35 	%cond = phi i32 [ %conv21, %cond.false ], [ 1, %land.lhs.true3 ], [ %lor.ext, %lor.end ]		; <i32> [#uses=1]
     36 	%conv22 = trunc i32 %cond to i8		; <i8> [#uses=1]
     37 	ret i8 %conv22
     38 }
     39 
     40 define i32 @func_34(i8 signext %p_35) nounwind readonly {
     41 entry:
     42 	%tobool = icmp eq i8 %p_35, 0		; <i1> [#uses=1]
     43 	br i1 %tobool, label %lor.lhs.false, label %if.then
     44 
     45 lor.lhs.false:		; preds = %entry
     46 	%tmp1 = load i8* @g_3		; <i8> [#uses=1]
     47 	%tobool3 = icmp eq i8 %tmp1, 0		; <i1> [#uses=1]
     48 	br i1 %tobool3, label %return, label %if.then
     49 
     50 if.then:		; preds = %lor.lhs.false, %entry
     51 	%tmp4 = load i8* @g_3		; <i8> [#uses=1]
     52 	%conv5 = sext i8 %tmp4 to i32		; <i32> [#uses=1]
     53 	ret i32 %conv5
     54 
     55 return:		; preds = %lor.lhs.false
     56 	ret i32 0
     57 }
     58 
     59 define void @foo(i32 %p_5) noreturn nounwind {
     60 entry:
     61 	%cmp = icmp sgt i32 %p_5, 0		; <i1> [#uses=2]
     62 	%call = tail call i32 @safe() nounwind		; <i32> [#uses=1]
     63 	%conv1 = trunc i32 %call to i8		; <i8> [#uses=3]
     64 	%tobool.i = xor i1 %cmp, true		; <i1> [#uses=3]
     65 	%cmp.i = icmp sgt i8 %conv1, 0		; <i1> [#uses=3]
     66 	%or.cond.i = or i1 %cmp.i, %tobool.i		; <i1> [#uses=1]
     67 	br i1 %or.cond.i, label %lor.rhs.i, label %land.lhs.true3.i
     68 
     69 land.lhs.true3.i:		; preds = %entry
     70 	%xor = zext i1 %cmp to i32		; <i32> [#uses=1]
     71 	%conv5.i = sext i8 %conv1 to i32		; <i32> [#uses=1]
     72 	%cmp7.i = icmp slt i32 %conv5.i, %xor		; <i1> [#uses=1]
     73 	%cmp7.i.not = xor i1 %cmp7.i, true		; <i1> [#uses=1]
     74 	%or.cond23.i = and i1 %cmp.i, %tobool.i		; <i1> [#uses=1]
     75 	%or.cond = and i1 %cmp7.i.not, %or.cond23.i		; <i1> [#uses=1]
     76 	br i1 %or.cond, label %lor.end.i, label %for.inc
     77 
     78 lor.rhs.i:		; preds = %entry
     79 	%or.cond23.i.old = and i1 %cmp.i, %tobool.i		; <i1> [#uses=1]
     80 	br i1 %or.cond23.i.old, label %lor.end.i, label %for.inc
     81 
     82 lor.end.i:		; preds = %lor.rhs.i, %land.lhs.true3.i
     83 	%tobool19.i = icmp eq i8 %conv1, 0		; <i1> [#uses=0]
     84 	br label %for.inc
     85 
     86 for.inc:		; preds = %for.inc, %lor.end.i, %lor.rhs.i, %land.lhs.true3.i
     87 	br label %for.inc
     88 }
     89 
     90 define i32 @func_35(i8 signext %p_35) nounwind readonly {
     91 entry:
     92   %tobool = icmp eq i8 %p_35, 0                   ; <i1> [#uses=1]
     93   br i1 %tobool, label %lor.lhs.false, label %if.then
     94 
     95 lor.lhs.false:                                    ; preds = %entry
     96   %tmp1 = load i8* @g_3                           ; <i8> [#uses=1]
     97   %tobool3 = icmp eq i8 %tmp1, 0                  ; <i1> [#uses=1]
     98   br i1 %tobool3, label %return, label %if.then
     99 
    100 if.then:                                          ; preds = %lor.lhs.false, %entry
    101   %tmp4 = load i8* @g_3                           ; <i8> [#uses=1]
    102   %conv5 = sext i8 %tmp4 to i32                   ; <i32> [#uses=1]
    103   ret i32 %conv5
    104 
    105 return:                                           ; preds = %lor.lhs.false
    106   ret i32 0
    107 }
    108 
    109 define void @bar(i32 %p_5) noreturn nounwind {
    110 entry:
    111   %cmp = icmp sgt i32 %p_5, 0                     ; <i1> [#uses=2]
    112   %call = tail call i32 @safe() nounwind          ; <i32> [#uses=1]
    113   %conv1 = trunc i32 %call to i8                  ; <i8> [#uses=3]
    114   %tobool.i = xor i1 %cmp, true                   ; <i1> [#uses=3]
    115   %cmp.i = icmp sgt i8 %conv1, 0                  ; <i1> [#uses=3]
    116   %or.cond.i = or i1 %cmp.i, %tobool.i            ; <i1> [#uses=1]
    117   br i1 %or.cond.i, label %lor.rhs.i, label %land.lhs.true3.i
    118 
    119 land.lhs.true3.i:                                 ; preds = %entry
    120   %xor = zext i1 %cmp to i32                      ; <i32> [#uses=1]
    121   %conv5.i = sext i8 %conv1 to i32                ; <i32> [#uses=1]
    122   %cmp7.i = icmp slt i32 %conv5.i, %xor           ; <i1> [#uses=1]
    123   %cmp7.i.not = xor i1 %cmp7.i, true              ; <i1> [#uses=1]
    124   %or.cond23.i = and i1 %cmp.i, %tobool.i         ; <i1> [#uses=1]
    125   %or.cond = and i1 %cmp7.i.not, %or.cond23.i     ; <i1> [#uses=1]
    126   br i1 %or.cond, label %lor.end.i, label %for.inc
    127 
    128 lor.rhs.i:                                        ; preds = %entry
    129   %or.cond23.i.old = and i1 %cmp.i, %tobool.i     ; <i1> [#uses=1]
    130   br i1 %or.cond23.i.old, label %lor.end.i, label %for.inc
    131 
    132 lor.end.i:                                        ; preds = %lor.rhs.i, %land.lhs.true3.i
    133   %tobool19.i = icmp eq i8 %conv1, 0              ; <i1> [#uses=0]
    134   br label %for.inc
    135 
    136 for.inc:                                          ; preds = %for.inc, %lor.end.i, %lor.rhs.i, %land.lhs.true3.i
    137   br label %for.inc
    138 }
    139 
    140 declare i32 @safe()
    141