Dylan McKay a14534711a [RegAllocGreedy] Attempt to split unspillable live intervals ...

Summary:
Previously, when allocating unspillable live ranges, we would never
attempt to split. We would always bail out and try last ditch graph
recoloring.

This patch changes this by attempting to split all live intervals before
performing recoloring.

This fixes LLVM bug PR14879.

I can't add test cases for any backends other than AVR because none of
them have small enough register classes to trigger the bug.

Reviewers: qcolombet

Subscribers: MatzeB

Differential Revision: https://reviews.llvm.org/D25070

llvm-svn: 283838

2016-10-11 01:04:36 +00:00

..

high-pressure-on-ptrregs.ll

[RegAllocGreedy] Attempt to split unspillable live intervals

2016-10-11 01:04:36 +00:00

large-return-size.ll

Allow a maximum of 64 bits to be returned in registers

2016-10-08 01:05:09 +00:00

lit.local.cfg

Requires the AVR backend for running test/CodeGen/AVR

2016-10-08 04:39:34 +00:00

smul-with-overflow.ll

[AVR] Expand MULHS for all types

2016-10-08 01:01:49 +00:00

umul-with-overflow.ll

[AVR] Expand MULHS for all types

2016-10-08 01:01:49 +00:00