llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-22 13:29:44 +00:00

History

Chandler Carruth 4363b0729b [x86] Teach the target-specific combining how to aggressively fold

half-shuffles, even looking through intervening instructions in a chain.

Summary:
This doesn't happen to show up with any test cases I've found for the current
shuffle lowering, but previous attempts would benefit from this and it seems
generally useful. I've tested it directly using intrinsics, which also shows
that it will work with hand vectorized code as well.

Note that even though pshufd isn't directly used in these tests, it gets
exercised because we combine some of the half shuffles into a pshufd
first, and then merge them.

Differential Revision: http://reviews.llvm.org/D4291

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211890 91177308-0d34-0410-b5e6-96231b3b80d8

2014-06-27 11:34:40 +00:00

AArch64

MachineScheduler: add some book-keeping to fix an assert.

2014-06-27 04:57:05 +00:00

ARM

Fix up scoping in a few tests (and delete one that validates unnecessary behavior).

2014-06-24 20:10:27 +00:00

CPP

IR: add "cmpxchg weak" variant to support permitted failure.

2014-06-13 14:24:07 +00:00

Generic

Add a new attribute called 'jumptable' that creates jump-instruction tables for functions marked with this attribute.