Sanjoy Das f9e7219610 Introduce @llvm.experimental.deoptimize ...

Summary:
This intrinsic, together with deoptimization operand bundles, allow
frontends to express transfer of control and frame-local state from
one (typically more specialized, hence faster) version of a function
into another (typically more generic, hence slower) version.

In languages with a fully integrated managed runtime this intrinsic can
be used to implement "uncommon trap" like functionality.  In unmanaged
languages like C and C++, this intrinsic can be used to represent the
slow paths of specialized functions.

Note: this change does not address how `@llvm.experimental_deoptimize`
is lowered.  That will be done in a later change.

Reviewers: chandlerc, rnk, atrick, reames

Subscribers: llvm-commits, kmod, mjacob, maksfb, mcrosier, JosephTremoulet

Differential Revision: http://reviews.llvm.org/D17732

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@263281 91177308-0d34-0410-b5e6-96231b3b80d8

2016-03-11 19:08:34 +00:00

..

llvm

Introduce @llvm.experimental.deoptimize

2016-03-11 19:08:34 +00:00

llvm-c

Use lto_bool_t instead of a raw bool (fixup for r262977).

2016-03-09 04:05:28 +00:00