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| author | Sanjoy Das <sanjoy@playingwithpointers.com> | 2015-09-24 01:00:49 +0000 |
|---|---|---|
| committer | Sanjoy Das <sanjoy@playingwithpointers.com> | 2015-09-24 01:00:49 +0000 |
| commit | b07fc572bdd21d5676f5f0ae8ab52d45718917e5 (patch) | |
| tree | 52fbde0a6db31b67a68b3ec5e92842b4ee248b60 /llvm/lib/Transforms | |
| parent | 3236c9ce4a0672b12f75959d3e048b1fc65c36f9 (diff) | |
| download | bcm5719-llvm-b07fc572bdd21d5676f5f0ae8ab52d45718917e5.tar.gz bcm5719-llvm-b07fc572bdd21d5676f5f0ae8ab52d45718917e5.zip | |
[IR] Teach `llvm::User` to co-allocate a descriptor.
Summary:
With this change, subclasses of `llvm::User` will be able to co-allocate
a variable number of bytes (called a "descriptor") with the `llvm::User`
instance. The co-allocated descriptor can later be accessed using
`llvm::User::getDescriptor`. This will be used in later changes to
implement operand bundles.
This change steals one bit from `NumUserOperands`, but given that it is
still 28 bits wide I don't think this will be a practical issue.
This change does not allow allocating hung off uses with descriptors.
This only for simplicity, not for any fundamental reason; and we can
easily add this functionality later if needed.
Reviewers: reames, chandlerc, dexonsmith, kmod, majnemer, pete, JosephTremoulet
Subscribers: pete, sanjoy, llvm-commits
Differential Revision: http://reviews.llvm.org/D12455
llvm-svn: 248453
Diffstat (limited to 'llvm/lib/Transforms')
0 files changed, 0 insertions, 0 deletions
