Commit Graph

70 Commits

Author SHA1 Message Date
Marek Olsak 58f61a84e7 R600/SI: Set 20-bit immediate byte offset for SMRD on VI
llvm-svn: 223614
2014-12-07 17:17:38 +00:00
Marek Olsak be047806d1 R600/SI: Update instruction conversions for VI
There are 3 changes:
- Convert 32-bit S_LSHL/LSHR/ASHR to their V_*REV variants for VI
- Lower RSQ_CLAMP for VI
- Don't generate MIN/MAX_LEGACY on VI

llvm-svn: 223604
2014-12-07 12:19:03 +00:00
Tom Stellard 794c8c0f78 R600/SI: Set the ATC bit on all resource descriptors for the HSA runtime
llvm-svn: 223125
2014-12-02 17:05:41 +00:00
Matt Arsenault c5f174d060 R600/SI: Various instruction format bit test cleanups
- Fix missing SALU format bits
- Remove unused isSALUInstr
- Add isVALU
- Switch isDS to use a bit like the others
- Move SIInstrInfo::is* functions to header
- Reorder so they are approximately sorted by type (SALU, VALU, memory)

llvm-svn: 223038
2014-12-01 15:52:46 +00:00
Matt Arsenault c09cc3c5b0 R600/SI: Implement areMemAccessesTriviallyDisjoint
This partially makes up for not having address spaces
used for alias analysis in some simple cases.

This is not yet enabled by default so shouldn't change anything yet.

llvm-svn: 222286
2014-11-19 00:01:31 +00:00
Matt Arsenault 94812216ef R600/SI: Use S_BFE_I64 for 64-bit sext_inreg
llvm-svn: 222012
2014-11-14 18:18:16 +00:00
Matt Arsenault ace5b76739 R600/SI: Fix general commuting breaking src mods
The generic code trying to use findCommutedOpIndices won't
understand that it needs to swap the modifier operands also,
so it should fail if they are set.

llvm-svn: 220064
2014-10-17 18:00:43 +00:00
Matt Arsenault 9783e00d1e R600/SI: Fix hardcoded values for modifiers.
Move enums to SIDefines.h

llvm-svn: 218610
2014-09-29 15:50:26 +00:00
Matt Arsenault ee522bf23e R600/SI: Move finding SGPR operand to move to separate function
llvm-svn: 218533
2014-09-26 17:55:06 +00:00
Matt Arsenault 92befe7996 R600/SI: Implement findCommutedOpIndices
The base implementation of commuteInstruction is used
in some cases, but it turns out this has been broken for a
long time since modifiers were inserted between the real operands.

The base implementation of commuteInstruction also fails on immediates,
which also needs to be fixed.

llvm-svn: 218530
2014-09-26 17:54:54 +00:00
Tom Stellard 96468903d4 R600/SI: Implement VGPR register spilling for compute at -O0 v3
VGPRs are spilled to LDS.  This still needs more testing, but
we need to at least enable it at -O0, because the fast register
allocator spills all registers that are live at the end of blocks
and without this some future commits will break the
flat-address-space.ll test.

v2: Only calculate thread id once

v3: Move insertion of spill instructions to
    SIRegisterInfo::eliminateFrameIndex()
llvm-svn: 218348
2014-09-24 01:33:17 +00:00
Tom Stellard 73ae1cb59a R600/SI: Clean up checks for legality of immediate operands
There are new register classes VCSrc_* which represent operands that
can take an SGPR, VGPR or inline constant.  The VSrc_* class is now used
to represent operands that can take an SGPR, VGPR, or a 32-bit
immediate.

This allows us to have more accurate checks for legality of
immediates, since before we had no way to distinguish between operands
that supported any 32-bit immediate and operands which could only
support inline constants.

llvm-svn: 218334
2014-09-23 21:26:25 +00:00
Tom Stellard ec2e43c073 R600/SI: Add enums for some hard-coded values
llvm-svn: 218250
2014-09-22 15:35:29 +00:00
Matt Arsenault 0e75a06451 R600/SI: Rough first implementation of shouldClusterLoads
llvm-svn: 217968
2014-09-17 17:48:30 +00:00
Matt Arsenault 3f98140c87 R600/SI: Add preliminary support for flat address space
llvm-svn: 217777
2014-09-15 15:41:53 +00:00
Matt Arsenault 9903ccf7ee R600/SI: Add InstrMapping for noret atomics.
Only handles LDS atomics for now, and will be used
to replace atomics with no uses with the no return
versions.

llvm-svn: 217378
2014-09-08 15:07:27 +00:00
Benjamin Kramer 8c90fd71f7 Add override to overriden virtual methods, remove virtual keywords.
No functionality change. Changes made by clang-tidy + some manual cleanup.

llvm-svn: 217028
2014-09-03 11:41:21 +00:00
Tom Stellard 745f2eddef R600/SI: Teach moveToVALU how to handle more S_LOAD_* instructions
llvm-svn: 216220
2014-08-21 20:41:00 +00:00
Matt Arsenault b2baffaffd R600/SI: Fix offset folding in some cases with shifted pointers.
Ordinarily (shl (add x, c1), c2) -> (add (shl x, c2), c1 << c2)
is only done if the add has one use. If the resulting constant
add can be folded into an addressing mode, force this to happen
for the pointer operand.

This ends up happening a lot because of how LDS objects are allocated.
Since the globals are allocated next to each other, acessing the first
element of the second object is directly indexed by a shifted pointer.

llvm-svn: 215739
2014-08-15 17:49:05 +00:00
Benjamin Kramer a7c40ef022 Canonicalize header guards into a common format.
Add header guards to files that were missing guards. Remove #endif comments
as they don't seem common in LLVM (we can easily add them back if we decide
they're useful)

Changes made by clang-tidy with minor tweaks.

llvm-svn: 215558
2014-08-13 16:26:38 +00:00
Tom Stellard 155bbb7713 R600/SI: Add a ComplexPattern for selecting MUBUF _OFFSET variant
This saves us from having to copy a 64-bit 0 value into VGPRs for
BUFFER_* instruction which only have a 12-bit immediate offset.

llvm-svn: 215399
2014-08-11 22:18:17 +00:00
Matt Arsenault c10853f29f R600/SI: Implement areLoadsFromSameBasePtr
This currently has a noticable effect on the kernel argument loads.
LDS and global loads are more problematic, I think because of how copies
are currently inserted to ensure that the address is a VGPR.

llvm-svn: 214942
2014-08-06 00:29:43 +00:00
Tom Stellard b4a313a76f R600/SI: Do abs/neg folding with ComplexPatterns
Abs/neg folding has moved out of foldOperands and into the instruction
selection phase using complex patterns.  As a consequence of this
change, we now prefer to select the 64-bit encoding for most
instructions and the modifier operands have been dropped from
integer VOP3 instructions.

llvm-svn: 214467
2014-08-01 00:32:39 +00:00
Tom Stellard 0e975cf6e5 R600/SI: Simplify and fix handling of VOP2 in SIInstrInfo::legalizeOperands
We were incorrectly assuming that all VOP2 instructions can read SGPRs
in Src0, but this is not true for instructions that read carry-in from
VCC.

The old logic has been replaced with new logic which checks the defined
register classes of the VOP2 instruction to determine whether or not to
legalize the operands.

llvm-svn: 214465
2014-08-01 00:32:35 +00:00
Tom Stellard 6407e1e632 R600/SI: Fold immediates when shrinking instructions
This will prevent us from using extra MOV instructions once we prefer
selecting 64-bit instructions.

llvm-svn: 214464
2014-08-01 00:32:33 +00:00
Tom Stellard 86d12ebdbd R600/SI: Fix incorrect commute operation in shrink instructions pass
We were commuting the instruction by still shrinking it using the
original opcode.

NOTE: This is a candidate for the 3.5 branch.
llvm-svn: 214463
2014-08-01 00:32:28 +00:00
Matt Arsenault 1acc72f431 R600/SI: Implement getLdStBaseRegImmOfs
llvm-svn: 214225
2014-07-29 21:34:55 +00:00
Matt Arsenault e2fabd35b5 R600/SI: Add isMUBUF / isMTBUF
Also add missing comments about how the flags work.

llvm-svn: 214195
2014-07-29 18:51:56 +00:00
Matt Arsenault b9f46eeff1 R600/SI: Fix return type for isMIMG / isSMRD
All the others use bool, so these should too.

llvm-svn: 214106
2014-07-28 17:59:38 +00:00
Tom Stellard 1aaad6970c R600/SI: Add instruction shrinking pass
This pass converts 64-bit instructions to 32-bit when possible.

llvm-svn: 213561
2014-07-21 16:55:33 +00:00
Tom Stellard b02094e115 R600/SI: Use scratch memory for large private arrays
llvm-svn: 213551
2014-07-21 15:45:01 +00:00
Matt Arsenault 0163e033e2 R600: Remove unused function
llvm-svn: 213472
2014-07-20 06:31:06 +00:00
Tom Stellard 2e59a45f80 R600: Move AMDGPUInstrInfo from AMDGPUTargetMachine into AMDGPUSubtarget
llvm-svn: 210869
2014-06-13 01:32:00 +00:00
Matt Arsenault 8333e4378e R600/SI: Implement i64 ctpop
llvm-svn: 210568
2014-06-10 19:18:24 +00:00
Matt Arsenault 689f325099 R600/SI: Keep 64-bit not on SALU
llvm-svn: 210476
2014-06-09 16:36:31 +00:00
Tom Stellard c721a23882 R600/SI: Refactor the VOP3_32 tablegen class
This will allow us to use a single MachineInstr to represent
instructions which behave the same but have different encodings
on some subtargets.

llvm-svn: 209028
2014-05-16 20:56:47 +00:00
Tom Stellard eba61071d7 R600/SI: Only create one instruction when spilling/restoring register v3
The register spiller assumes that only one new instruction is created
when spilling and restoring registers, so we need to emit pseudo
instructions for vector register spills and lower them after
register allocation.

v2:
  - Fix calculation of lane index
  - Extend VGPR liveness to end of program.

v3:
  - Use SIMM16 field of S_NOP to specify multiple NOPs.

https://bugs.freedesktop.org/show_bug.cgi?id=75005

llvm-svn: 207843
2014-05-02 15:41:42 +00:00
Tom Stellard 0c354f25c9 R600/SI: Teach moveToVALU how to handle some SMRD instructions
llvm-svn: 207660
2014-04-30 15:31:29 +00:00
Craig Topper 5656db4a8b [C++11] Add 'override' keywords and remove 'virtual'. Additionally add 'final' and leave 'virtual' on some methods that are marked virtual without overriding anything and have no obvious overrides themselves. R600 edition
llvm-svn: 207503
2014-04-29 07:57:24 +00:00
Craig Topper e73658ddbb [C++] Use 'nullptr'.
llvm-svn: 207394
2014-04-28 04:05:08 +00:00
Matt Arsenault 27cc958dff R600/SI: Match sign_extend_inreg to s_sext_i32_i8 and s_sext_i32_i16
llvm-svn: 206547
2014-04-18 01:53:18 +00:00
Matt Arsenault d7bdcc46a6 R600/SI: Implement shouldConvertConstantLoadToIntImm
llvm-svn: 205244
2014-03-31 19:54:27 +00:00
Tom Stellard 30f59417cf R600/SI: Implement SIInstrInfo::isTriviallyRematerializable()
llvm-svn: 205188
2014-03-31 14:01:56 +00:00
Matt Arsenault 248b7b6ba1 R600/SI: Sub-optimial fix for 64-bit immediates with SALU ops.
No longer asserts, but now you get moves loading legal immediates
into the split 32-bit operations.

llvm-svn: 204661
2014-03-24 20:08:09 +00:00
Matt Arsenault f35182c783 R600/SI: Fix 64-bit bit ops that require the VALU.
Try to match scalar and first like the other instructions.
Expand 64-bit ands to a pair of 32-bit ands since that is not
available on the VALU.

llvm-svn: 204660
2014-03-24 20:08:05 +00:00
Matt Arsenault bd9958038c R600/SI: Move splitting 64-bit immediates to separate function.
llvm-svn: 204651
2014-03-24 18:26:52 +00:00
Tom Stellard 1583409e33 R600/SI: Handle MUBUF instructions in SIInstrInfo::moveToVALU()
llvm-svn: 204476
2014-03-21 15:51:57 +00:00
Matt Arsenault 99395fa98f R600: Remove unused method declaration.
llvm-svn: 204357
2014-03-20 16:41:06 +00:00
Matt Arsenault faa297e89e Remove incomplete comment
llvm-svn: 203518
2014-03-11 00:01:37 +00:00
Matt Arsenault 6dde30354a Move trivial getter into header.
llvm-svn: 203517
2014-03-11 00:01:34 +00:00