1 ; RUN: opt -S -jump-threading < %s | FileCheck %s 2 3 4 ; CHECK-LABEL: @f( 5 ; CHECK-LABEL: entry: 6 ; CHECK-NEXT: br label %[[loop:.*]] 7 ; CHECK: [[loop]]: 8 ; CHECK-NEXT: br label %[[loop]] 9 10 define void @f() { 11 entry: 12 br label %for.cond1 13 14 if.end16: 15 %phi1 = phi i32 [ undef, %for.cond1 ] 16 %g.3 = phi i32 [ %g.1, %for.cond1 ] 17 %sext = shl i32 %g.3, 16 18 %conv20 = ashr exact i32 %sext, 16 19 %tobool21 = icmp eq i32 %phi1, 0 20 br i1 %tobool21, label %lor.rhs, label %for.cond1 21 22 for.cond1: 23 %g.1 = phi i32 [ 0, %entry ], [ 0, %lor.rhs ], [ %g.3, %if.end16 ] 24 br i1 undef, label %lor.rhs, label %if.end16 25 26 lor.rhs: 27 br label %for.cond1 28 } 29
