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174 Commits

Author SHA1 Message Date
Dylan McKay
a7e0548722 [AVR] Explicitly set the target in all CodeGen tests 
This seems to have caused failures on the buildbot.

llvm-svn: 289324
 2016-12-10 11:23:16 +00:00
Dylan McKay
5c90b8cb4f [AVR] Use the register scavenger when expanding 'LDDW' instructions 
Summary: This gets rid of the hardcoded 'r0' that was used previously.

Reviewers: asl

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D27567

llvm-svn: 289322
 2016-12-10 10:51:55 +00:00
Dylan McKay
5d0233bea2 [AVR] Support stores to undefined pointers 
This would previously trigger an assertion error in AVRISelDAGToDAG.

llvm-svn: 289321
 2016-12-10 10:16:13 +00:00
Dylan McKay
1cdbf42a33 [AVR] Remove a set of redundant tests 
This fixes the build.

llvm-svn: 289201
 2016-12-09 11:22:26 +00:00
Dylan McKay
a5d49dfbb3 [AVR] Add tests for a large number of pseudo instructions 
This adds MIR tests for 24 pseudo instructions.

llvm-svn: 289191
 2016-12-09 07:49:04 +00:00
Dylan McKay
371117e7a5 [AVR] Add MIR tests for pseudo instruction expansions 
This adds tests for 13 pseudo instruction expansions.

llvm-svn: 289039
 2016-12-08 10:52:13 +00:00
Dylan McKay
0cc0446ad2 [AVR] Add MIR tests for a few pseudo instructions 
llvm-svn: 289031
 2016-12-08 08:54:41 +00:00
Dylan McKay
99b756eb40 [AVR] Expand 'SELECT_CC' nodes whereever possible 
llvm-svn: 288905
 2016-12-07 12:34:47 +00:00
Dylan McKay
6dbc8d5a0c [AVR] Move a pseudo expansion test into a folder 
llvm-svn: 288899
 2016-12-07 11:21:45 +00:00
Dylan McKay
8cec7eb6dd [AVR] Allow loading from stack slots where src and dest registers are identical 
Fixes PR 31256

llvm-svn: 288897
 2016-12-07 11:08:56 +00:00
Dylan McKay
6e8c2b1b65 [AVR] Remove 'XFAIL' from a CodeGen test 
This seems to be fixed as of r288052.

llvm-svn: 288618
 2016-12-04 09:50:42 +00:00
Dylan McKay
656c1fa544 Un-XFAIL an AVR CodeGen test 
llvm-svn: 287958
 2016-11-26 01:07:32 +00:00
Dylan McKay
c2de8e8ec3 [AVR] Mark the 'select-must-add-unconditional-jump' test as 'XFAIL' 
llvm-svn: 287871
 2016-11-24 12:38:54 +00:00
Dylan McKay
48c26b2b12 [AVR] Remove some accidentally-commited code that broke the bots 
This is a remnant of an on-chip unit testing tool that has since been
moved out-of-tree.

It was accidentally committed in r287162.

llvm-svn: 287180
 2016-11-17 00:09:38 +00:00
Dylan McKay
6dd69032c9 [AVR] Fix basic block naming in ctlz and cttz tests 
The branch selector would change the names.

llvm-svn: 287174
 2016-11-16 22:48:38 +00:00
Dylan McKay
9701c42de9 [AVR] Add tests for counting leading/trailing zeros 
This adds two test files that verify the 'cttz' and 'ctlz' operations.

llvm-svn: 287172
 2016-11-16 22:38:43 +00:00
Dylan McKay
a789f40002 [AVR] Add the pseudo instruction expansion pass 
Summary:
A lot of the pseudo instructions are required because LLVM assumes that
all integers of the same size as the pointer size are legal. This means
that it will not currently expand 16-bit instructions to their 8-bit
variants because it thinks 16-bit types are legal for the operations.

This also adds all of the CodeGen tests that required the pass to run.

Reviewers: arsenm, kparzysz

Subscribers: wdng, mgorny, modocache, llvm-commits

Differential Revision: https://reviews.llvm.org/D26577

llvm-svn: 287162
 2016-11-16 21:58:04 +00:00
Dylan McKay
0d4778f841 [AVR] Add a selection of CodeGen tests 
Summary: This adds all of the CodeGen tests which currently pass.

Reviewers: arsenm, kparzysz

Subscribers: japaric, wdng

Differential Revision: https://reviews.llvm.org/D26388

llvm-svn: 286418
 2016-11-09 23:46:52 +00:00
Dylan McKay
c328fe5af4 [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
Mehdi Amini
01e0e136bd Requires the AVR backend for running test/CodeGen/AVR 
llvm-svn: 283653
 2016-10-08 04:39:34 +00:00
Dylan McKay
12109e7314 Allow a maximum of 64 bits to be returned in registers 
The rest spills to the stack

Authored by Jake Goulding

llvm-svn: 283635
 2016-10-08 01:05:09 +00:00
Dylan McKay
c1ff65cf62 [AVR] Expand MULHS for all types 
Once MULHS was expanded, this exposed an issue where the condition
register was thought to be 16-bit. This caused an attempt to copy a
16-bit register to an 8-bit register.

Authored by Jake Goulding

llvm-svn: 283634
 2016-10-08 01:01:49 +00:00
Dylan McKay
309eba75b1 Revert "[RegAllocGreedy] Attempt to split unspillable live intervals" 
It was accidentally committed.

llvm-svn: 282855
 2016-09-30 14:05:15 +00:00
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