Progress:
In progressChanges

Summary

  1. [FPEnv] Evaluate constant expressions under non-default rounding modes (details)
  2. [DSE] Add tests with lifetime.end that only mark parts of the obj as dead. (details)
Commit 6314f412a83d61e293e3696d4afe1797a4001ac4 by sepavloff
[FPEnv] Evaluate constant expressions under non-default rounding modes

The change implements evaluation of constant floating point expressions
under non-default rounding modes. The main objective was to support
evaluation of global variable initializers, where constant rounding mode
may be specified by `#pragma STDC FENV_ROUND`.

Differential Revision: https://reviews.llvm.org/D87822
The file was modifiedclang/lib/AST/TextNodeDumper.cpp
The file was addedclang/test/AST/const-fpfeatures.cpp
The file was modifiedclang/lib/AST/ExprConstant.cpp
The file was modifiedclang/include/clang/AST/Expr.h
The file was modifiedclang/include/clang/Basic/DiagnosticASTKinds.td
The file was addedclang/test/AST/const-fpfeatures-diag.c
The file was modifiedclang/lib/AST/Expr.cpp
The file was modifiedclang/lib/Sema/SemaAttr.cpp
The file was addedclang/test/AST/const-fpfeatures.c
Commit b2c0193afa2b25afc718bc32751147c5dc1bfd63 by flo
[DSE] Add tests with lifetime.end that only mark parts of the obj as dead.

llvm.lifetime.end accepts a size parameters to limit the size of the
location marked as dead. Add a few tests with stores to locations after
the part that has been marked as dead.
The file was modifiedllvm/test/Transforms/DeadStoreElimination/MSSA/lifetime.ll