<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Feb 22, 2019, at 7:33 AM, James Y Knight via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org" class="">llvm-dev@lists.llvm.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="">After watching a few different people get confused about nameless blocks in llvm IR, and recalling my own confusion a few years ago, I'd like to change the syntax slightly to make it a bit clearer.</div><div class=""><br class=""></div><div dir="ltr" class="">This is similar to the change made for instruction names in <a href="https://llvm.org/" class="">https://llvm.org/</a><span style="font-family: "Segoe UI", "Segoe UI Emoji", "Segoe UI Symbol", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">PR2480 a decade ago.</span></div><div dir="ltr" class=""><br class=""></div><div class="">Two changes:</div><div class="">1. Change the parsing of a numeric block label to parse as a value number rather than a string.</div><div class="">2. When printing blocks, always print the value number as a proper label, except for the initial block.</div><div dir="ltr" class=""><div class=""><br class="">See proposed change in <a href="https://reviews.llvm.org/D58548" class="">https://reviews.llvm.org/D58548</a></div></div></div></div></blockquote><br class=""></div><div>Great idea!</div><div><br class=""></div><div>-Chris</div><br class=""></body></html>