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; RUN: opt < %s -passes=indvars
; PR4315
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-f80:128:128"
target triple = "x86_64-undermydesk-freebsd8.0"
%struct.mbuf = type <{ ptr, ptr, i32, i8, i8, i8, i8 }>
define i32 @crash(ptr %m) nounwind {
entry:
br label %for.cond
for.cond: ; preds = %if.end, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %if.end ] ; <i32> [#uses=3]
%chksum.0 = phi i8 [ 0, %entry ], [ %conv3, %if.end ] ; <i8> [#uses=3]
%cmp = icmp slt i32 %i.0, 1 ; <i1> [#uses=1]
br i1 %cmp, label %for.body, label %do.body
for.body: ; preds = %for.cond
br i1 undef, label %if.end, label %do.body
if.end: ; preds = %for.body
%i.02 = trunc i32 %i.0 to i8 ; <i8> [#uses=1]
%conv3 = add i8 %chksum.0, %i.02 ; <i8> [#uses=1]
%inc = add i32 %i.0, 1 ; <i32> [#uses=1]
br label %for.cond
do.body: ; preds = %do.cond, %for.body, %for.cond
%chksum.2 = phi i8 [ undef, %do.cond ], [ %chksum.0, %for.body ], [ %chksum.0, %for.cond ] ; <i8> [#uses=1]
br i1 undef, label %do.cond, label %bb.nph
bb.nph: ; preds = %do.body
br label %while.body
while.body: ; preds = %while.body, %bb.nph
%chksum.13 = phi i8 [ undef, %while.body ], [ %chksum.2, %bb.nph ] ; <i8> [#uses=0]
br i1 undef, label %do.cond, label %while.body
do.cond: ; preds = %while.body, %do.body
br i1 false, label %do.end, label %do.body
do.end: ; preds = %do.cond
ret i32 0
}
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