1 ; RUN: opt < %s -indvars 2 ; PR4315 3 4 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" 5 target triple = "x86_64-undermydesk-freebsd8.0" 6 %struct.mbuf = type <{ %struct.mbuf*, i8*, i32, i8, i8, i8, i8 }> 7 8 define i32 @crash(%struct.mbuf* %m) nounwind { 9 entry: 10 br label %for.cond 11 12 for.cond: ; preds = %if.end, %entry 13 %i.0 = phi i32 [ 0, %entry ], [ %inc, %if.end ] ; <i32> [#uses=3] 14 %chksum.0 = phi i8 [ 0, %entry ], [ %conv3, %if.end ] ; <i8> [#uses=3] 15 %cmp = icmp slt i32 %i.0, 1 ; <i1> [#uses=1] 16 br i1 %cmp, label %for.body, label %do.body 17 18 for.body: ; preds = %for.cond 19 br i1 undef, label %if.end, label %do.body 20 21 if.end: ; preds = %for.body 22 %i.02 = trunc i32 %i.0 to i8 ; <i8> [#uses=1] 23 %conv3 = add i8 %chksum.0, %i.02 ; <i8> [#uses=1] 24 %inc = add i32 %i.0, 1 ; <i32> [#uses=1] 25 br label %for.cond 26 27 do.body: ; preds = %do.cond, %for.body, %for.cond 28 %chksum.2 = phi i8 [ undef, %do.cond ], [ %chksum.0, %for.body ], [ %chksum.0, %for.cond ] ; <i8> [#uses=1] 29 br i1 undef, label %do.cond, label %bb.nph 30 31 bb.nph: ; preds = %do.body 32 br label %while.body 33 34 while.body: ; preds = %while.body, %bb.nph 35 %chksum.13 = phi i8 [ undef, %while.body ], [ %chksum.2, %bb.nph ] ; <i8> [#uses=0] 36 br i1 undef, label %do.cond, label %while.body 37 38 do.cond: ; preds = %while.body, %do.body 39 br i1 false, label %do.end, label %do.body 40 41 do.end: ; preds = %do.cond 42 ret i32 0 43 } 44
