[all-commits] [llvm/llvm-project] 87c786: Reland "[StackColoring] Remap PseudoSourceValue fr...

[Fangrui Song via All-commits]

  Branch: refs/heads/release/10.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 87c7863c3ec4b66944bfcf39efd666de417f28b8
      https://github.com/llvm/llvm-project/commit/87c7863c3ec4b66944bfcf39efd666de417f28b8
  Author: Fangrui Song <maskray at google.com>
  Date:   2020-01-27 (Mon, 27 Jan 2020)

  Changed paths:
    M llvm/lib/CodeGen/StackColoring.cpp

  Log Message:
  -----------
  Reland "[StackColoring] Remap PseudoSourceValue frame indices via MachineFunction::getPSVManager()""

Reland 7a8b0b1595e7dc878b48cf9bbaa652087a6895db, with a fix that checks
`!E.value().empty()` to avoid inserting a zero to SlotRemap.

Debugged by rnk@ in https://bugs.chromium.org/p/chromium/issues/detail?id=1045650#c33

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D73510

(cherry picked from commit 68051c122440b556e88a946bce12bae58fcfccb4)
(cherry picked from commit c7c5da6df30141c563e1f5b8ddeabeecdd29e55e)