[PATCH] D75423: [OpenCL] Mark pointers to constant address space as invariant

[Yaxun Liu via Phabricator via cfe-commits]

yaxunl created this revision.
yaxunl added reviewers: rjmccall, Anastasia, bader.

OpenCL constant address space is immutable, therefore pointers to constant address space can
be marked with llvm.invariant.start permanently.

This should allow more optimization opportunities in LLVM passes.


https://reviews.llvm.org/D75423

Files:
  clang/lib/CodeGen/CGDeclCXX.cpp
  clang/lib/CodeGen/CGExpr.cpp
  clang/lib/CodeGen/CGExprScalar.cpp
  clang/lib/CodeGen/CodeGenFunction.h
  clang/test/CodeGenOpenCL/invariant.cl
  clang/test/CodeGenOpenCL/printf.cl

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