commit 527ff218843f03b3bbec4ce53a89bebb1e66fdbf
author Yonghong Song <yhs@fb.com> Fri Mar 22 01:30:50 2019 +0000
committer Yonghong Song <yhs@fb.com> Fri Mar 22 01:30:50 2019 +0000
tree e400880714211877e7b7fcb3bc1ddee273128af8
parent cfac065bea6cad42bc48df8c823f304ed0bbb387

[BPF] handle derived type properly for computing type id

Currently, the type id for a derived type is computed incorrectly.
For example,
  type #1: int
  type #2: ptr to #1

For a global variable "int *a", type #1 will be attributed to variable "a".
This is due to a bug which assigns the type id of the basetype of
that derived type as the derived type's type id. This happens
to "const", "volatile", "restrict", "typedef" and "pointer" types.

This patch fixed this bug, fixed existing test cases and added
a new one focusing on pointers plus other derived types.

Signed-off-by: Yonghong Song <yhs@fb.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356727 91177308-0d34-0410-b5e6-96231b3b80d8