Dylan McKay 2a80cc688a [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: 282852
2016-09-30 13:59:20 +00:00
2016-09-29 23:05:35 +00:00
2016-09-30 12:12:15 +00:00
2016-09-29 18:17:30 +00:00
Description
llvm with tablegen backend for capstone disassembler
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