|  | ; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s | 
|  |  | 
|  | define void @t() nounwind ssp { | 
|  | ; CHECK-LABEL: t: | 
|  | entry: | 
|  | br i1 undef, label %return, label %if.end.i | 
|  |  | 
|  | if.end.i:                                         ; preds = %entry | 
|  | %tmp7.i = load i32, i32* undef, align 4 | 
|  | br i1 undef, label %return, label %if.end | 
|  |  | 
|  | if.end:                                           ; preds = %if.end.i | 
|  | ; CHECK: %if.end | 
|  | ; CHECK: movl (%{{.*}}), [[REG:%[a-z]+]] | 
|  | ; CHECK-NOT: movl [[REG]], [[REG]] | 
|  | ; CHECK-NEXT: testl [[REG]], [[REG]] | 
|  | ; CHECK-NEXT: xorl | 
|  | %tmp138 = select i1 undef, i32 0, i32 %tmp7.i | 
|  | %tmp867 = zext i32 %tmp138 to i64 | 
|  | br label %while.cond | 
|  |  | 
|  | while.cond:                                       ; preds = %while.body, %if.end | 
|  | %tmp869 = sub i64 %tmp867, 0 | 
|  | %scale2.0 = trunc i64 %tmp869 to i32 | 
|  | %cmp149 = icmp eq i32 %scale2.0, 0 | 
|  | br i1 %cmp149, label %while.end, label %land.rhs | 
|  |  | 
|  | land.rhs:                                         ; preds = %while.cond | 
|  | br i1 undef, label %while.body, label %while.end | 
|  |  | 
|  | while.body:                                       ; preds = %land.rhs | 
|  | br label %while.cond | 
|  |  | 
|  | while.end:                                        ; preds = %land.rhs, %while.cond | 
|  | br i1 undef, label %cond.false205, label %cond.true190 | 
|  |  | 
|  | cond.true190:                                     ; preds = %while.end | 
|  | br i1 undef, label %cond.false242, label %cond.true225 | 
|  |  | 
|  | cond.false205:                                    ; preds = %while.end | 
|  | unreachable | 
|  |  | 
|  | cond.true225:                                     ; preds = %cond.true190 | 
|  | br i1 undef, label %cond.false280, label %cond.true271 | 
|  |  | 
|  | cond.false242:                                    ; preds = %cond.true190 | 
|  | unreachable | 
|  |  | 
|  | cond.true271:                                     ; preds = %cond.true225 | 
|  | unreachable | 
|  |  | 
|  | cond.false280:                                    ; preds = %cond.true225 | 
|  | unreachable | 
|  |  | 
|  | return:                                           ; preds = %if.end.i, %entry | 
|  | ret void | 
|  | } |