[all-commits] [llvm/llvm-project] a97e20: Revert "GlobalISel: Add G_ASSERT_ALIGN hint instru...

[James Y Knight via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a97e20a3a8a58be751f023e610758310d5664562
      https://github.com/llvm/llvm-project/commit/a97e20a3a8a58be751f023e610758310d5664562
  Author: James Y Knight <jyknight at google.com>
  Date:   2022-01-14 (Fri, 14 Jan 2022)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h
    M llvm/include/llvm/IR/InstrTypes.h
    M llvm/include/llvm/Support/TargetOpcodes.def
    M llvm/include/llvm/Target/GenericOpcodes.td
    M llvm/lib/CodeGen/GlobalISel/CallLowering.cpp
    M llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp
    M llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
    M llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    R llvm/test/CodeGen/AMDGPU/GlobalISel/irtranslator-assert-align.ll
    R llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-assert-align.mir
    M llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp

  Log Message:
  -----------
  Revert "GlobalISel: Add G_ASSERT_ALIGN hint instruction"

This commit sometimes causes a crash when compiling a vtable thunk. E.g.:

clang '--target=aarch64-grtev4-linux-gnu' -xc++ - -c -o /dev/null <<EOF
struct a {
  virtual int f();
};
struct c {
  virtual int &g() const;
};
struct d : a, c {
  int &g() const;
};
int &d::g() const {}
EOF

Some follow-up commits have been reverted as well:
Revert "IR: Make getRetAlign check callee function attributes"
Revert "Fix MSVC "32-bit shift implicitly converted to 64 bits" warning. NFC."
Revert "Fix MSVC "32-bit shift implicitly converted to 64 bits" warning. NFC."

This reverts commit 4f414af6a77cdbd9b6303a7afa525cfb3f9d792a.
This reverts commit a5507d2e253a2c94c3ca7794edf7385af8082b97.
This reverts commit 3d2d208f6a0a421b23937c39b9d371183a5913a3.
This reverts commit 07ddfa95e3b5ea8464e90545f592624221b854ae.