Commit Graph

15 Commits

Author SHA1 Message Date
Adrian Prantl 5f8f34e459 Remove \brief commands from doxygen comments.
We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

  for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46290

llvm-svn: 331272
2018-05-01 15:54:18 +00:00
Tim Renouf 132291589f [AMDGPU] AMDPAL scratch buffer support
Summary:
Added support for scratch (including spilling) for OS type amdpal:
generates code to set up the scratch descriptor if it is needed.

With amdpal, the scratch resource descriptor is loaded from offset 0 of
the global information table. The low 32 bits of the address of the
global information table is passed in s0.

Added amdgpu-git-ptr-high function attribute to hard-wire the high 32
bits of the address of the global information table. If the function
attribute is not specified, or is 0xffffffff, then the backend generates
code to use the high 32 bits of pc.

The documentation for the AMDPAL ABI will be added in a later commit.

Subscribers: arsenm, kzhuravl, wdng, nhaehnle, yaxunl, dstuttard, t-tye

Differential Revision: https://reviews.llvm.org/D37483

llvm-svn: 314501
2017-09-29 09:49:35 +00:00
Matt Arsenault ecb43ef1bc AMDGPU: Don't spill SP reg like a normal CSR
llvm-svn: 313217
2017-09-13 23:47:01 +00:00
Matt Arsenault b62a4eb524 AMDGPU: Initial implementation of calls
Includes a hack to fix the type selected for
the GlobalAddress of the function, which will be
fixed by changing the default datalayout to use
generic pointers for 0.

llvm-svn: 309732
2017-08-01 19:54:18 +00:00
Matt Arsenault f28683cf51 AMDGPU: Setup SP/FP in callee function prolog/epilog
llvm-svn: 306312
2017-06-26 17:53:59 +00:00
Matt Arsenault 2b1f9aa577 AMDGPU: Start defining a calling convention
Partially implement callee-side for arguments and return values.
byval doesn't work properly, and most likely sret or other on-stack
return values most as well.

llvm-svn: 303308
2017-05-17 21:56:25 +00:00
Matt Arsenault 36c3122ecd AMDGPU: Shift down reserved SP register like scratch wave offset
llvm-svn: 301367
2017-04-25 23:40:57 +00:00
Konstantin Zhuravlyov ffdb00eda9 [AMDGPU] Split R600/SI getFrameIndexReference and emit stack object offsets for SI
Differential Revision: https://reviews.llvm.org/D29674

llvm-svn: 297499
2017-03-10 19:39:07 +00:00
Matt Arsenault e823d92f7f AMDGPU: Merge initial gfx9 support
llvm-svn: 295554
2017-02-18 18:29:53 +00:00
Eugene Zelenko 2bc2f33ba2 [AMDGPU, PowerPC, TableGen] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).
llvm-svn: 289282
2016-12-09 22:06:55 +00:00
Matt Arsenault 57bc4324f8 AMDGPU: Refactor frame lowering
This will make future changes easier.

llvm-svn: 280296
2016-08-31 21:52:21 +00:00
Konstantin Zhuravlyov f2f3d14774 [AMDGPU] Emit debugger prologue and emit the rest of the debugger fields in the kernel code header
Debugger prologue is emitted if -mattr=+amdgpu-debugger-emit-prologue.

Debugger prologue writes work group IDs and work item IDs to scratch memory at fixed location in the following format:
  - offset 0: work group ID x
  - offset 4: work group ID y
  - offset 8: work group ID z
  - offset 16: work item ID x
  - offset 20: work item ID y
  - offset 24: work item ID z

Set
  - amd_kernel_code_t::debug_wavefront_private_segment_offset_sgpr to scratch wave offset reg
  - amd_kernel_code_t::debug_private_segment_buffer_sgpr to scratch rsrc reg
  - amd_kernel_code_t::is_debug_supported to true if all debugger features are enabled

Differential Revision: http://reviews.llvm.org/D20335

llvm-svn: 273769
2016-06-25 03:11:28 +00:00
Matt Arsenault 43e92fe306 AMDGPU: Cleanup subtarget handling.
Split AMDGPUSubtarget into amdgcn/r600 specific subclasses.
This removes most of the static_casting of the basic codegen
classes everywhere, and tries to restrict the features
visible on the wrong target.

llvm-svn: 273652
2016-06-24 06:30:11 +00:00
Matt Arsenault 0e3d38937e AMDGPU: Remove SIPrepareScratchRegs
It does not work because of emergency stack slots.
This pass was supposed to eliminate dummy registers for the
spill instructions, but the register scavenger can introduce
more during PrologEpilogInserter, so some would end up
left behind if they were needed.

The potential for spilling the scratch resource descriptor
and offset register makes doing something like this
overly complicated. Reserve registers to use for the resource
descriptor and use them directly in eliminateFrameIndex.

Also removes creating another scratch resource descriptor
when directly selecting scratch MUBUF instructions.

The choice of which registers are reserved is temporary.
For now it attempts to pick the next available registers
after the user and system SGPRs.

llvm-svn: 254329
2015-11-30 21:15:53 +00:00
Matt Arsenault 0c90e9501e AMDGPU: Create emergency stack slots during frame lowering
Test has a bogus verifier error which will be fixed by later commits.

llvm-svn: 252327
2015-11-06 18:17:45 +00:00