|  | ; RUN: opt -passes=loop-simplify -S %s | FileCheck %s | 
|  | 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-f128:128:128-v128:128:128-n32:64" | 
|  | target triple = "powerpc64le-unknown-linux" | 
|  |  | 
|  | define fastcc void @do_update_md(ptr nocapture readonly %x, i1 %arg, i16 %arg2) #0 { | 
|  | entry: | 
|  | br i1 %arg, label %if.end365, label %lor.lhs.false134 | 
|  |  | 
|  | lor.lhs.false134:                                 ; preds = %entry | 
|  | br i1 %arg, label %lor.lhs.false138, label %if.end365 | 
|  |  | 
|  | lor.lhs.false138:                                 ; preds = %lor.lhs.false134 | 
|  | br i1 %arg, label %lor.lhs.false142, label %if.end365 | 
|  |  | 
|  | lor.lhs.false142:                                 ; preds = %lor.lhs.false138 | 
|  | br i1 %arg, label %for.body276.lr.ph, label %if.end365 | 
|  |  | 
|  | for.body276.lr.ph:                                ; preds = %lor.lhs.false142 | 
|  | switch i16 %arg2, label %if.then288 [ | 
|  | i16 4, label %for.body344 | 
|  | i16 2, label %for.body344 | 
|  | ] | 
|  |  | 
|  | if.then288:                                       ; preds = %for.body276.lr.ph | 
|  | br label %for.body305 | 
|  |  | 
|  | for.body305:                                      ; preds = %for.body305, %if.then288 | 
|  | br label %for.body305 | 
|  |  | 
|  | for.body344:                                      ; preds = %for.body344, %for.body276.lr.ph, %for.body276.lr.ph | 
|  | %indvar = phi i64 [ %indvar.next, %for.body344 ], [ 0, %for.body276.lr.ph ], [ 0, %for.body276.lr.ph ] | 
|  | %indvars.iv552 = phi i64 [ %indvars.iv.next553, %for.body344 ], [ 0, %for.body276.lr.ph ], [ 0, %for.body276.lr.ph ] | 
|  | %indvars.iv.next553 = add nuw nsw i64 %indvars.iv552, 1 | 
|  | %indvar.next = add i64 %indvar, 1 | 
|  | br label %for.body344 | 
|  |  | 
|  | ; CHECK-LABEL: @do_update_md | 
|  | ; CHECK: %indvars.iv552 = phi i64 [ %indvars.iv.next553, %for.body344 ], [ 0, %for.body344.preheader ] | 
|  | ; CHECK: ret | 
|  |  | 
|  | if.end365:                                        ; preds = %lor.lhs.false142, %lor.lhs.false138, %lor.lhs.false134, %entry | 
|  | ret void | 
|  | } | 
|  |  | 
|  | attributes #0 = { nounwind } | 
|  |  |