[all-commits] [llvm/llvm-project] 2a2847: [ConstantFold] Get rid of special cases for sizeof...

[Eli Friedman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2a2847823f0d13188c43ebdd0baf42a95df750c7
      https://github.com/llvm/llvm-project/commit/2a2847823f0d13188c43ebdd0baf42a95df750c7
  Author: Eli Friedman <efriedma at quicinc.com>
  Date:   2021-07-31 (Sat, 31 Jul 2021)

  Changed paths:
    M clang/test/CodeGen/catch-nullptr-and-nonzero-offset-in-offsetof-idiom.c
    M clang/test/CodeGen/catch-nullptr-and-nonzero-offset.c
    M clang/test/CodeGenCXX/catch-nullptr-and-nonzero-offset-in-offsetof-idiom.cpp
    M clang/test/OpenMP/for_reduction_codegen.cpp
    M clang/test/OpenMP/master_taskloop_reduction_codegen.cpp
    M clang/test/OpenMP/master_taskloop_simd_reduction_codegen.cpp
    M clang/test/OpenMP/parallel_master_taskloop_reduction_codegen.cpp
    M clang/test/OpenMP/parallel_master_taskloop_simd_reduction_codegen.cpp
    M clang/test/OpenMP/taskloop_reduction_codegen.cpp
    M clang/test/OpenMP/taskloop_simd_reduction_codegen.cpp
    M llvm/lib/IR/ConstantFold.cpp
    M llvm/test/Other/constant-fold-gep.ll
    M llvm/test/Transforms/LowerTypeTests/function-disjoint.ll
    M llvm/test/tools/llvm-as/slow-ptrtoint.ll

  Log Message:
  -----------
  [ConstantFold] Get rid of special cases for sizeof etc.

Target-dependent constant folding will fold these down to simple
constants (or at least, expressions that don't involve a GEP).  We don't
need heroics to try to optimize the form of the expression before that
happens.

Fixes https://bugs.llvm.org/show_bug.cgi?id=51232 .

Differential Revision: https://reviews.llvm.org/D107116