[PATCH] D68298: [GlobalOpt] Pass DTU to removeUnreachableBlocks instead of recomputing.

Sat Jan 4 12:06:28 PST 2020

xbolva00 added a comment.

In D68298#1804330 <https://reviews.llvm.org/D68298#1804330>, @nikic wrote:

> Yes, we're still on the legacy manager, so DT is not available here. I've just verified that reverting this patch does indeed reclaim a sizable part of the LLVM 10 compile-time regressions (end-to-end timings <https://perf.rust-lang.org/compare.html?start=97588aeda139309169b11654fc809e1ac5fd246c&end=1b6633b46cd7705ec813cfd1cd7083e92f9da903>).

Maybe reason of https://bugs.llvm.org/show_bug.cgi?id=44408 too

Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68298/new/

https://reviews.llvm.org/D68298