[all-commits] [llvm/llvm-project] c7c5da: Reland "[StackColoring] Remap PseudoSourceValue fr...

[Fangrui Song via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: c7c5da6df30141c563e1f5b8ddeabeecdd29e55e
      https://github.com/llvm/llvm-project/commit/c7c5da6df30141c563e1f5b8ddeabeecdd29e55e
  Author: Fangrui Song <maskray at google.com>
  Date:   2020-01-27 (Mon, 27 Jan 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/PseudoSourceValue.h
    M llvm/lib/CodeGen/StackColoring.cpp
    M llvm/test/CodeGen/PowerPC/stack-coloring-vararg.mir

  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