This fixes a bug that is uncovered by a future commit and will
be tested by the test/CodeGen/R600/sgpr-control-flow.ll test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218352 91177308-0d34-0410-b5e6-96231b3b80d8
The previous implementation was extending the live range of SGPRs
by modifying the live intervals directly. This was causing a lot
of machine verification errors when the machine scheduler was enabled.
The new implementation adds pseudo instructions with implicit uses to
extend the live ranges of SGPRs, which works much better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218351 91177308-0d34-0410-b5e6-96231b3b80d8
These registers can be allocated and used like other 32-bit registers,
but it seems like a likely source for bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218350 91177308-0d34-0410-b5e6-96231b3b80d8
Correctly handle special registers: EXEC, EXEC_LO, EXEC_HI, VCC_LO,
VCC_HI, and M0. The previous implementation would assertion fail
when passed these registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218349 91177308-0d34-0410-b5e6-96231b3b80d8
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()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218348 91177308-0d34-0410-b5e6-96231b3b80d8
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218334 91177308-0d34-0410-b5e6-96231b3b80d8
This reverts commit r218254.
The global_atomics.ll test fails with asserts disabled. For some reason,
the compiler fails to produce the atomic no return variants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218257 91177308-0d34-0410-b5e6-96231b3b80d8
BypassSlowDiv is used by codegen prepare to insert a run-time
check to see if the operands to a 64-bit division are really 32-bit
values and if they are it will do 32-bit division instead.
This is not useful for R600, which has predicated control flow since
both the 32-bit and 64-bit paths will be executed in most cases. It
also increases code size which can lead to more instruction cache
misses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218252 91177308-0d34-0410-b5e6-96231b3b80d8
ISD::MUL and ISD:UMULO are the same except that UMULO sets an overflow
bit. Since we aren't using the overflow bit, we should use ISD::MUL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218251 91177308-0d34-0410-b5e6-96231b3b80d8
In r217636, the value stored in KernelInfo.Num[VS]GPRSs was changed from
the highest GPR index used to the number of gprs in order to be
consistent with the name of the variable.
The code writing the config values still assumed that the value in this
variable was the highest GPR index used, which caused the compiler to
over report the number of GPRs being used.
https://bugs.freedesktop.org/show_bug.cgi?id=84089
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218150 91177308-0d34-0410-b5e6-96231b3b80d8
shim between the TargetTransformInfo immutable pass and the Subtarget
via the TargetMachine and Function. Migrate a single call from
BasicTargetTransformInfo as an example and provide shims where TargetMachine
begins taking a Function to determine the subtarget.
No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218004 91177308-0d34-0410-b5e6-96231b3b80d8
Since read2 / write2 are emitted for 4-byte aligned 8-byte
accesses, these are seen by the scheduler.
The DAG scheduler is semi-deprecated, so just
ignore these for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217969 91177308-0d34-0410-b5e6-96231b3b80d8
Only 1 decimal place should be printed for inline immediates.
Other constants should be hex constants.
Does not include f64 tests because folding those inline
immediates currently does not work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217964 91177308-0d34-0410-b5e6-96231b3b80d8
Instructions are now generally selected to the e64 forms originally,
and shrunk down later. Rename foldOperands to legalizeOperands,
since that's really most of what it tries to do.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217959 91177308-0d34-0410-b5e6-96231b3b80d8
Add some more tests to make sure better operand
choices are still made. Leave some cases that seem
to have no reason to ever be e64 alone.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217789 91177308-0d34-0410-b5e6-96231b3b80d8
Refactored the R600_LDS_1A2D class a bit to get it to actually work.
It seemed to be previously unused and broken.
We also have to disable the conversion to the noret variant for now in
R600ISelLowering because the getLDSNoRetOp method only handles 1A1D LDS ops.
Someone can feel free to modify the AMDGPU::getLDSNoRetOp method to
work for more than 1A1D variants of LDS operations. It's being left as a
future TODO for now.
Signed-off-by: Aaron Watry <awatry at gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217596 91177308-0d34-0410-b5e6-96231b3b80d8
This was only present for SI before.
Cayman may still be missing, but I am unable to test that currently.
v2: Don't create atomicrmw max tests in separate file
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
CC: Tom Stellard <thomas.stellard@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217589 91177308-0d34-0410-b5e6-96231b3b80d8
Need to convert the 64 element offset into bytes, not just the element
size like the normal case instructions.
Noticed by inspection. This can't be hit now because
st64 instructions aren't emitted during instruction selection,
and the post-RA scheduler isn't enabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217560 91177308-0d34-0410-b5e6-96231b3b80d8
Assert in scheduler from an inserted copy_to_regclass from
a constant.
This only seems to break sometimes when a constant initializer
address is forced into VGPRs in a non-entry block. No test
since the only case I've managed to hit only happens with a future
patch, and that case will also not be a problem once scalar instructions
are used in non-entry blocks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217380 91177308-0d34-0410-b5e6-96231b3b80d8
Only handles LDS atomics for now, and will be used
to replace atomics with no uses with the no return
versions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217378 91177308-0d34-0410-b5e6-96231b3b80d8
