| Commit message (Collapse) | Author | Age | Files | Lines |
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This lowers the enhanced ir_call using the lookaside table
of subroutines into an if ladder. This initially was done
at the AST level but it caused some ordering issues so a separate
pass was required.
v2: clone return value derefs.
v2.1: update for subroutine->int convert.
v2.2: add a clone for the array index
Reviewed-by: Chris Forbes <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Similar to gl_ClipDistance -> gl_ClipDistanceMESA
v2: - renamed is_mesa_var to lowered_builtin_array_variable
- moved LowerTessLevel into gl_constants
- cosmetic changes in lower_tess_level.cpp
Reviewed-by: Kenneth Graunke <[email protected]>
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Otherwise `make distcheck' will fail.
Signed-off-by: Emil Velikov <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
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This pass performs a mark and sweep pass over a nir_shader's associated
memory - anything still connected to the program will be kept, and any
dead memory we dropped on the floor will be freed.
The expectation is that this will be called when finished building and
optimizing the shader. However, it's also fine to call it earlier, and
many times, to free up memory earlier.
v2: (feedback from Jason Ekstrand)
- Skip sweeping impl->start_block, as it's already in the CF list.
- Don't sweep SSA defs (they're owned by their defining instruction)
- Don't steal phi sources (they're owned by nir_phi_instr).
- Don't steal tex->src (it's owned by the tex_inst itself)
- Don't sweep dereference chains (top-level dereferences are owned by
the instruction; sub-dereferences are owned by the parent deref).
- Don't sweep sources and destinations (SSA defs are handled as part of
the defining instruction, and registers are handled as part of
function implementations).
- Just steal instructions; don't walk them (no longer required).
v3: (feedback from Jason Ekstrand)
- Steal indirect sources from nir_src/nir_dest.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
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Based on the algo from NV50LegalizeSSA::handleDIV() and handleMOD().
See also trans_idiv() in freedreno/ir3/ir3_compiler.c (which was an
adaptation of the nv50 code from Ilia Mirkin).
A python/numpy script which implements the same algorithm (and is
possibly useful for debugging or analysis) can be found here:
http://people.freedesktop.org/~robclark/div-lowering.py
I've tested this on i965 hacked up to insert the idiv lowering pass,
and on freedreno with NIR frontend.
Signed-off-by: Rob Clark <[email protected]>
Tested-by: Eric Anholt <[email protected]> (vc4)
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This commit adds a pass to L1-normalize cube-map coordinates. Some hardware
such as i965 requires that largest cube-map coordinate is +-1. We had a
pass to perform this normalization in GLSL IR but we need it in NIR for
cube maps on ARB programs to work correctly.
Reviewed-by: Jordan Justen <[email protected]>
v2 (Suggested by Eric):
- Do a vector fabs and split into components later
- Move to core NIR
Reviewed-by: Eric Anholt <[email protected]>
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Not much hardware wants them these days, and it might give us a chance to
do CSE or algebraic at the NIR level.
Reviewed-by: Jason Ekstrand <[email protected]>
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i965/nir: Use the dedicated ffma peephole
total instructions in shared programs: 4418748 -> 4394618 (-0.55%)
instructions in affected programs: 1292790 -> 1268660 (-1.87%)
helped: 5999
HURT: 457
GAINED: 4
LOST: 9
Reviewed-by: Matt Turner <[email protected]>
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NIR uses these enums/#defines in nir_variables and associated intrinsics,
but I want to be able to use them from TGSI->NIR and NIR->TGSI.
Otherwise, we had to pull in all of mtypes.h.
This doesn't cover all of the enums we might want from a shared compiler
core (like varying slots or vert attribs), but it at least covers what I
need at the moment (system values and interp qualifiers).
v2: Move to src/glsl since util/ is really vague. Include in Makefile.am
list. Use plain bitshifts and stdint types instead of undefined
BITFIELD64_BIT.
v3: Rename to shader_enums.h. Move it into Makefile.sources.
Reviewed-by: Kenneth Graunke <[email protected]> (v2, with
recommendation to rename)
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The header was added with commit 2a135c470e3(nir: Add an ALU op builder
kind of like ir_builder.h) but did not made it into to the sources list.
Fortunately it remained unused until a recent commit faf6106c6f6(nir:
Implement a Mesa IR -> NIR translator.)
v2: Remove the bogus dependency. Tweak commit message.
Signed-off-by: Emil Velikov <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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Signed-off-by: Emil Velikov <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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st_glsl_to_tgsi and ir_to_mesa have handled conditional discards for a
long time; the previous patch added that capability to i965.
i965 (Haswell) shader-db stats:
Without NIR:
total instructions in shared programs: 5792133 -> 5776360 (-0.27%)
instructions in affected programs: 737585 -> 721812 (-2.14%)
helped: 6300
HURT: 68
GAINED: 2
With NIR:
total instructions in shared programs: 5787538 -> 5769569 (-0.31%)
instructions in affected programs: 767843 -> 749874 (-2.34%)
helped: 6522
HURT: 35
GAINED: 6
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Connor Abbott <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
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v2 Jason Ekstrand <[email protected]>:
- Use nir_dominance_lca for computing least common anscestors
- Use the block index for comparing dominance tree depths
- Pin things that do partial derivatives
Reviewed-by: Reviewed-by: Connor Abbott <[email protected]>
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v2: Rebase on the nir_opcodes.h python code generation support.
v3: Use SSA values, and set an appropriate writemask on dot products.
v4: Make the arguments be SSA references as well. This lets you stack up
expressions in the arguments of other expressions, at the cost of
having to insert a fmov/imov if you want to swizzle. Also, add
the generated file to NIR_GENERATED_FILES.
v5: Use more pythonish style for iterating the list.
v6: Infer the size of the dest from the size of the srcs, and auto-swizzle
a single small src out to the appropriate size.
v7: Add little helpers for initializing the struct, add a typedef for the
struct like other nir types have.
Reviewed-by: Kenneth Graunke <[email protected]> (v6)
Reviewed-by: Connor Abbott <[email protected]> (v7)
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Cc: "10.5" <[email protected]>
Signed-off-by: Emil Velikov <[email protected]>
Reviewed-by: Connor Abbott <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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This removes phi nodes whose sources all point to the same thing.
Shader-db results:
total NIR instructions in shared programs: 2045293 -> 2041209 (-0.20%)
NIR instructions in affected programs: 126564 -> 122480 (-3.23%)
helped: 615
HURT: 0
total FS instructions in shared programs: 4321840 -> 4320392 (-0.03%)
FS instructions in affected programs: 24622 -> 23174 (-5.88%)
helped: 138
HURT: 0
Reviewed-by: Jason Ekstrand <[email protected]>
Tested-by: Jason Ekstrand <[email protected]>
Signed-off-by: Connor Abbott <[email protected]>
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v2 Jason Ekstrand <[email protected]>:
- Add better comments
- Use nir_ssa_dest_init and nir_src_for_ssa more places
- Fix some void * casts
v3 Jason Ekstrand <[email protected]>:
- Rework the way we determine whether or not to sccalarize a phi node to
make the recursion non-bogus
- Treat load_const instructions as scalarizable
v4 Jason Ekstrand <[email protected]>:
- Allow uniform and input loads to be scalarizable
v5 Jason Ekstrand <[email protected]>:
- Also consider loads of inputs (varying, uniform, or ubo) to be
scalarizable. We were already doing this for load_var on uniforms and
inputs.
Reviewed-by: Kenneth Graunke <[email protected]>
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Add a required field to the Opcode class, const_expr, that contains an
expression or statement that computes the result of the opcode given known
constant inputs. Then take those const_expr's and expand them into a function
that takes an opcode and an array of constant inputs and spits out the constant
result. This means that when adding opcodes, there's one less place to update,
and almost all the opcodes are self-documenting since the information on how to
compute the result is right next to the definition.
The helper functions in nir_constant_expressions.c were taken from
ir_constant_expressions.cpp.
v3 Jason Ekstrand <[email protected]>
- Use mako to generate one function per opcode instead of doing piles of
string splicing
v4 Jason Ekstrand <[email protected]>
- More comments and better indentation in the mako
- Add a description of the constant expression language in nir_opcodes.py
- Added nir_constant_expressions.py to EXTRA_DIST in Makefile.am
Signed-off-by: Jason Ekstrand <[email protected]>
Reviewed-by: Connor Abbott <[email protected]>
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Before, we used a system where a file, nir_opcodes.h, defined some macros that
were included to generate the enum values and the nir_op_infos structure. This
worked pretty well, but for development the error messages were never very
useful, Python tools couldn't understand the opcode list, and it was difficult
to use nir_opcodes.h to do other things like autogenerate a builder API. Now, we
store opcode information in nir_opcodes.py, and we have nir_opcodes_c.py to
generate the old nir_opcodes.c and nir_opcodes_h.py to generate nir_opcodes.h,
which contains all the enum names and gets included into nir.h like before. In
addition to solving the above problems, using Python and Mako to generate
everything means that it's much easier to add keep information centralized as we
add new things like constant propagation that require per-opcode information.
v2:
- make Opcode derive from object (Dylan)
- don't use assert like it's a function (Dylan)
- style fixes for fnoise, use xrange (Dylan)
- use iterkeys() in nir_opcodes_h.py (Dylan)
- use pydoc-style comments (Jason)
- don't make fmin/fmax commutative and associative yet (Jason)
Signed-off-by: Connor Abbott <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
v3 Jason Ekstrand <[email protected]>
- Alphabetize source file lists
- Generate nir_opcodes.h in the builddir instead of the source dir
- Include $(builddir)/src/glsl/nir in the i965 build
- Rework nir_opcodes.h generation so it generates a complete header file
instead of one that has to be embedded inside an enum declaration
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This is the equivalent of brw_fs_channel_expressions.cpp, which I wanted
for vc4.
v2: Use the nir_src_for_ssa() helper, and another instance of
nir_alu_src_copy().
v3: Drop the non-SSA support. All intended callers will have SSA-only ALU
ops.
v4: Use insert_before, drop stale bcsel/fcsel comment, drop now-unused
unsupported() function, drop lower_context struct.
v5: Completely rename the pass to nir_lower_alu_to_scalar(), add an assert
about weird input_sizes[].
Reviewed-by: Jason Ekstrand <[email protected]>
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Apparently $(top_srcdir) is not expanded in a source list when using
subdir-objects, so remove that. It's not clear to me why we were going
to such lengths to prefix each source file anyway.
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This new interface allows for writing a series of objects to a chunk
of memory (a "blob").. The allocated memory is maintained within the
blob itself, (and re-allocated by doubling when necessary).
There are also functions for reading objects from a blob as well. If
code attempts to read beyond the available memory, the read functions
return 0 values (or its moral equivalent) without reading past the
allocated memory. Once the caller is done with the reads, it can check
blob->overrun to ensure whether any invalid values were previously
returned due to attempts to read too far.
Reviewed-by: Jason Ekstrand <[email protected]>
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A worklist is a common concept in optimizations. This adds a structure
that we can reuse for many different types of optimizations.
Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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The original name wasn't particularly descriptive. This one indicates that
it actually gives you SSA values as opposed to the old pass which lowered
variables to registers.
Reviewed-by: Connor Abbott <[email protected]>
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This is no longer needed because it's now part of the algebraic
optimization pass
Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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This pass uses the previously built algebraic transformations framework and
should act as an example for anyone else wanting to make an algebraic
transformation pass for NIR.
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Connor Abbott <[email protected]>
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This framework provides a simple way to do simple search-and-replace
operations on NIR code. The nir_search.h header provides four simple data
structures for representing expressions: nir_value and four subtypes:
nir_variable, nir_constant, and nir_expression. An expression tree can
then be represented by nesting these data structures as needed. The
nir_replace_instr function takes an instruction, an expression, and a
value; if the instruction matches the expression, it is replaced with a new
chain of instructions to generate the given replacement value. The
framework keeps track of swizzles on sources and automatically generates
the currect swizzles for the replacement value.
Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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This pass analizes all of the load/store operations and, when a variable is
never aliased (potentially used by an indirect operation), it is lowered
directly to an SSA value. This pass translates to SSA directly and does
not require any fixup by the original to-SSA pass.
Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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This pass is still fairly basic. It only handles ALU operations, constant
loads, and phi nodes. No texture ops or intrinsics yet.
Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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Reviewed-by: Connor Abbott <[email protected]>
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This pass is kind of stupidly implemented but it should be enough to get us
up and going. We probably want something better that doesn't generate all
of the redundant moves eventually. However, the i965 backend should be
able to handle the movs, so I'm not too worried about it in the short term.
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v2: Jason Ekstrand <[email protected]>:
whitespace fixes
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v2: Jason Ekstrand <[email protected]>:
whitespace fixes
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After linking and inlining, this allows us to convert these registers
into SSA values and optimise more code.
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v2: Jason Ekstrand <[email protected]>
whitespace fixes
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