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59 Commits

Author SHA1 Message Date
Dylan McKay
880b08eb60 [AVR] Enable the '__do_copy_data' function 
Also enables '__do_clear_bss'.

These functions are automaticalled called by the CRT if they are
declared.

We need these to be called otherwise RAM will start completely
uninitialised, even though we need to copy RAM variables from progmem to
RAM.

llvm-svn: 312905
 2017-09-11 10:32:51 +00:00
Dylan McKay
8a8f3f7194 [AVR] Use the correct register classes for 16-bit atomic operations 
llvm-svn: 311620
 2017-08-24 00:14:38 +00:00
Dylan McKay
588df0306e [AVR] Remove the instrumentation pass 
I have a much better way of running integration tests now.

https://github.com/dylanmckay/avr-test-suite

llvm-svn: 308857
 2017-07-23 23:39:11 +00:00
Dylan McKay
1034ec14f4 [AVR] Improve the 'icall-func-pointer-correct-addr-space.ll' test 
Patch by Carl Peto.

llvm-svn: 308856
 2017-07-23 23:00:55 +00:00
Dylan McKay
e228272ebd [AVR] Fix a typo in the tests 
llvm-svn: 308148
 2017-07-16 22:31:07 +00:00
Dylan McKay
dcba8216a6 [AVR] Fix indirect calls to function pointers 
Patch by Carl Peto.

llvm-svn: 307888
 2017-07-13 08:09:36 +00:00
Dylan McKay
9805bce624 [AVR] Use the generic branch relaxer 
llvm-svn: 307617
 2017-07-11 04:17:13 +00:00
Dylan McKay
d5e39b8d0f [AVR] Fix test errors due to tied operands not matching 
Broken due to r307259.

llvm-svn: 307503
 2017-07-09 16:36:35 +00:00
Dylan McKay
4df9fae587 Revert "[AVR] Add the branch selection pass from the GitHub repository" 
This reverts commit 602ef067c1d58ecb425d061f35f2bc4c7e92f4f3.

llvm-svn: 307111
 2017-07-05 00:50:56 +00:00
Dylan McKay
590d049bd1 [AVR] Add the branch selection pass from the GitHub repository 
We should rewrite this using the generic branch relaxation pass, but for
the moment having this pass is better than hitting an assertion error.

llvm-svn: 307109
 2017-07-05 00:41:19 +00:00
Dylan McKay
71adee46e4 [AVR] Fix bug which caused assertion errors for some FRMIDX instructions 
Previously, if a basic block ended with a FRMIDX instruction, we would
end up doing something like this.

*std::next(MBB.end())

Which would hit an error:

"Assertion `!NodePtr->isKnownSentinel()' failed."

llvm-svn: 307057
 2017-07-04 04:40:06 +00:00
Dylan McKay
e7b364c5a9 [AVR] Fix a big in shift operator lowering; Authored by Dr. Gergo Erdi 
When generating code for a shift loop, check the shift
 amount against the literal value 0, not R0

llvm-svn: 304284
 2017-05-31 06:27:46 +00:00
Dylan McKay
c826f672fe [AVR] When lowering Select8/Select16, put newly generated MBBs in the same spot 
Contributed by Dr. Gergő Érdi.

Fixes a bug.

Raised from (https://github.com/avr-rust/rust/issues/49).

llvm-svn: 302973
 2017-05-13 00:22:34 +00:00
Dylan McKay
56c6d8c476 [AVR] Reserve the Y register in all functions 
llvm-svn: 302017
 2017-05-03 11:56:01 +00:00
Dylan McKay
d46a1c2e9a [AVR] Save/restore the frame pointer for all functions 
A recent commit I made made it so that we only did this for signal or
interrupt handlers. This broke normal functions.

llvm-svn: 301893
 2017-05-02 01:57:48 +00:00
Dylan McKay
01c4c20127 [AVR] Implement non-constant bit rotations 
This lets us do bit rotations of variable amount.

llvm-svn: 301794
 2017-05-01 09:48:55 +00:00
Dylan McKay
0e7217df94 [AVR] Support the LDWRdPtr instruction with the same Src+Dst register 
llvm-svn: 301313
 2017-04-25 15:09:04 +00:00
Dylan McKay
6596f8148e [AVR] Remove the 'multibyte' asm test 
It tests registers which are not actually used on AVR.

llvm-svn: 300684
 2017-04-19 12:13:45 +00:00
Dylan McKay
80ec3c2ad2 [AVR] Fix the test suite 
A bunch of tests failed because memory operations have been reordered.

I am unsure which commit changed this behaviour as the AVR build was
failing at that point with an unrelated error.

This commit just reoders some of the CHECK lines in some tests to suit
current llc output.

llvm-svn: 300682
 2017-04-19 12:02:52 +00:00
Dylan McKay
3f6096c4a4 [AVR] Disable integrated assembler for a few tests 
Fixes the build.

llvm-svn: 295895
 2017-02-22 22:41:13 +00:00
Matthias Braun
075724a5d9 MIRTests: Remove unnecessary 2>&1 redirection 
llc mir output goes to stdout nowadays, so the 2>&1 is not necessary
anymore for most tests.

llvm-svn: 295859
 2017-02-22 18:47:41 +00:00
Dylan McKay
a88be31eec [AVR] Implement stacksave/stackrestore by expanding (PR31342) 
Summary:
Authored by Florian Zeitz.

This implements the missing stacksave/stackrestore intrinsics via expansion.

Output of `llc -O0 -march=avr ~/devel/llvm/test/CodeGen/Generic/stacksave-restore.ll` for sanity checking (comments mine):

```
	.text
	.file	".../llvm/test/CodeGen/Generic/stacksave-restore.ll"
	.globl	test
	.p2align	1
	.type	test,@function
test:                                   ; @test
; BB#0:
	push	r28
	push	r29

	in	r28, 61
	in	r29, 62
	sbiw	r28, 4
	in	r0, 63
	cli
	out	62, r29
	out	63, r0
	out	61, r28

	in	r18, 61
	in	r19, 62

	mov	r20, r22
	mov	r21, r23

	in	r30, 61
	in	r31, 62

	lsl	r22
	rol	r23
	lsl	r22
	rol	r23
	in	r26, 61
	in	r27, 62
	sub	r26, r22
	sbc	r27, r23
	andi	r26, 252
	in	r0, 63
	cli
	out	62, r27
	out	63, r0
	out	61, r26

	in	r0, 63
	cli
	out	62, r31
	out	63, r0
	out	61, r30

	in	r30, 61
	in	r31, 62
	sub	r30, r22
	sbc	r31, r23
	andi	r30, 252
	in	r0, 63
	cli
	out	62, r31
	out	63, r0
	out	61, r30

	std	Y+3, r24                ; 2-byte Folded Spill
	std	Y+4, r25                ; 2-byte Folded Spill

	mov	r24, r26
	mov	r25, r27

	in	r0, 63
	cli
	out	62, r19
	out	63, r0
	out	61, r18

	std	Y+1, r20                ; 2-byte Folded Spill
	std	Y+2, r21                ; 2-byte Folded Spill

	adiw	r28, 4
	in	r0, 63
	cli
	out	62, r29
	out	63, r0
	out	61, r28

	pop	r29
	pop	r28
	ret
.Lfunc_end0:
	.size	test, .Lfunc_end0-test
```

Reviewers: dylanmckay

Reviewed By: dylanmckay

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D29553

llvm-svn: 294146
 2017-02-05 21:35:45 +00:00
Dylan McKay
2883d7625a [AVR] Marm MIR test functions as tracking liveness information 
This fixes an assertion error that broke three tests.

llvm-svn: 294140
 2017-02-05 20:25:34 +00:00
Dylan McKay
1f16d209e4 [AVR] Fix a bug where asm operands are printed twice 
We would unconditionally call printOperand, even if PrintAsmOperand
already printed the immediate.

llvm-svn: 294121
 2017-02-05 10:42:49 +00:00
Dylan McKay
b83005c02c [AVR] Implement TargetLoweing::getRegisterByName 
This allows the use of the 'read_register' intrinsics used by clang's
named register globals features.

llvm-svn: 291375
 2017-01-07 23:39:47 +00:00
Dylan McKay
a840a5bb5c [AVR] Optimize 16-bit ANDs with '1' 
Summary: Fixes PR 31345

Reviewers: dylanmckay

Subscribers: fhahn, llvm-commits

Differential Revision: https://reviews.llvm.org/D28186

llvm-svn: 290778
 2016-12-31 01:07:14 +00:00
Dylan McKay
e1112141cb [AVR] Optimize 16-bit ORs with '0' 
Summary: Fixes PR 31344

Authored by Anmol P. Paralkar

Reviewers: dylanmckay

Subscribers: fhahn, llvm-commits

Differential Revision: https://reviews.llvm.org/D28121

llvm-svn: 290732
 2016-12-30 00:21:56 +00:00
Jun Bum Lim
4f195c2484 [CodeGenPrep] Skip merging empty case blocks 
This is recommit of r287553 after fixing the invalid loop info after eliminating an empty block and unit test failures in AVR and WebAssembly :

Summary: Merging an empty case block into the header block of switch could cause ISel to add COPY instructions in the header of switch, instead of the case block, if the case block is used as an incoming block of a PHI. This could potentially increase dynamic instructions, especially when the switch is in a loop. I added a test case which was reduced from the benchmark I was targetting.

Reviewers: t.p.northover, mcrosier, manmanren, wmi, joerg, davidxl

Subscribers: joerg, qcolombet, danielcdh, hfinkel, mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D22696

llvm-svn: 289988
 2016-12-16 20:38:39 +00:00
Dylan McKay
f71b2bc86e [AVR] Add a test for 64-bit left shifts 
llvm-svn: 289936
 2016-12-16 11:40:00 +00:00
Dylan McKay
dbe4adba91 [AVR] Support floats in the instrumention pass 
This also refactors some common code into the 'GetTypeName' method.

llvm-svn: 289803
 2016-12-15 11:02:41 +00:00
Dylan McKay
fea5788d65 [AVR] Add a function instrumentation pass 
This will be used for an on-chip test suite.

llvm-svn: 289641
 2016-12-14 10:15:00 +00:00
Dylan McKay
7b63330234 [AVR] Add an 'relax memory operation' pass 
Summary:
This pass will be used to relax instructions which use out of bounds
memory accesses to equivalent operations that can work with the
addresses.

The pass currently implements relaxation for the STDWPtrQRr instruction.

Without this pass, an assertion error would be hit in the pseudo expansion pass.

In the future, we will need to add more instructions to this pass. We can do
that on a case-by-case basic.

Reviewers: arsenm, kparzysz

Subscribers: wdng, llvm-commits, mgorny

Differential Revision: https://reviews.llvm.org/D27650

llvm-svn: 289517
 2016-12-13 05:53:14 +00:00
Dylan McKay
f1fc745c90 [AVR] Add calling convention CodeGen tests 
This adds CodeGen tests for the AVR C calling convention.

llvm-svn: 289369
 2016-12-11 07:09:45 +00:00
Dylan McKay
acfd2dc1a0 [AVR] Add a test to validate a simple 'blinking led' program 
llvm-svn: 289362
 2016-12-11 04:59:39 +00:00
Dylan McKay
c9ba38b704 [AVR] Fix and clean up the inline assembly tests 
There was a bug where we would hit an assertion if 'Q' was used as a
constraint.

I also removed hardcoded register names to prefer regexes so the tests
don't break when the register allocator changes.

llvm-svn: 289325
 2016-12-10 11:49:07 +00:00
Dylan McKay
f68bc13836 [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
c328ab2ffc [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
12bab3b378 [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
5205ca6bf1 [AVR] Remove a set of redundant tests 
This fixes the build.

llvm-svn: 289201
 2016-12-09 11:22:26 +00:00
Dylan McKay
9f49c87f3f [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
c77cc04cfe [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
cc95addb7e [AVR] Add MIR tests for a few pseudo instructions 
llvm-svn: 289031
 2016-12-08 08:54:41 +00:00
Dylan McKay
60a412a963 [AVR] Expand 'SELECT_CC' nodes whereever possible 
llvm-svn: 288905
 2016-12-07 12:34:47 +00:00
Dylan McKay
e38eed36e2 [AVR] Move a pseudo expansion test into a folder 
llvm-svn: 288899
 2016-12-07 11:21:45 +00:00
Dylan McKay
8e5826c4b7 [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
f42adfd7eb [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
f17dce2e18 Un-XFAIL an AVR CodeGen test 
llvm-svn: 287958
 2016-11-26 01:07:32 +00:00
Dylan McKay
0d7a1d4169 [AVR] Mark the 'select-must-add-unconditional-jump' test as 'XFAIL' 
llvm-svn: 287871
 2016-11-24 12:38:54 +00:00
Dylan McKay
7d2eae2a90 [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
9912e95275 [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