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* nir: Add new GS intrinsics that maintain a count of emitted vertices.Kenneth Graunke2015-09-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | This patch also introduces a lowering pass to convert the simple GS intrinsics to the new ones. See the comments above that for the rationale behind the new intrinsics. This should be useful for i965; it's a generic enough mechanism that I could see other drivers potentially using it as well, so I don't feel too bad about putting it in the generic code. v2: - Use nir_after_block_before_jump for the cursor (caught by Jason Ekstrand - I'd mistakenly used nir_after_block when rebasing this code onto the new NIR control flow API). - Remove the old emit_vertex intrinsic at the end, rather than in the middle (requested by Jason). - Use state->... directly rather than locals (requested by Jason). - Report progress from nir_lower_gs_intrinsics() (requested by me). - Remove "Authors:" section from file comment (requested by Michael Schellenberger Costa). Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: rename nir_lower_samplers.c{pp,}Emil Velikov2015-09-211-1/+1
| | | | | | | | | | | | | | | | | | With the only C++ function having its own wrapper we can 'demote' this file to a normal C one. This allows us to get rid of extern C { #include <foo.h> } 'hacks'. Plus some of the headers may use C99 initializers, which are not supported by the ISO standard. This may cause build issue on incremental builds. If so run the following: sed -i -e 's|samplers\.cpp|samplers.c|' src/glsl/nir/.deps/nir_lower_samplers.Plo Fixes: ef8eebc6ad5(nir: support indirect indexing samplers in struct arrays) Signed-off-by: Emil Velikov <[email protected]> Reported-by: Gottfried Haider <[email protected]> Tested-by: Gottfried Haider <[email protected]> Reviewed-by: Timothy Arceri <[email protected]>
* nir: add two-sided-color lowering passRob Clark2015-09-181-0/+1
| | | | | Signed-off-by: Rob Clark <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* nir: rename nir_lower_tex_projectorRob Clark2015-09-181-1/+1
| | | | | | | | | | Since the following patches will add additional tex-lowering related functionality, which doesn't make sense to split out into a separate pass (as they would require duplication of the projector lowering logic), let's give this pass a more generic name. Signed-off-by: Rob Clark <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* nir: add lowering stage for user-clip-planes / clipdistRob Clark2015-09-171-0/+1
| | | | | | | | | | | | | | | The vertex shader lowering adds calculation for CLIPDIST, if needed (ie. user-clip-planes), and the frag shader lowering adds conditional kills based on CLIPDIST value (which should be treated as a normal interpolated varying by the driver). Note that this won't quite do the right thing in the face of MSAA plus user-clip-planes, since all the samples would be killed or not (rather than potentially only a portion of them). But it's better than no UCP support at all for drivers that don't have this in hw. Signed-off-by: Rob Clark <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* nir: Add a pass to rewrite uses of vecN sources to the vecN destinationJason Ekstrand2015-09-171-0/+1
| | | | | | | v2 (Jason Ekstrand): - Handle non-SSA sources and destinations Reviewed-by: Eduardo Lima Mitev <[email protected]>
* nir: Add a pass to lower outputs to temporary variablesJason Ekstrand2015-09-091-0/+1
| | | | | | | This pass can be used as a helper for NIR producers so they don't have to worry about creating the temporaries themselves. Reviewed-by: Ian Romanick <[email protected]>
* glsl: build: use makefile.sources variables when possibleEmil Velikov2015-09-091-2/+1
| | | | | | | | | | | Rather than folding one variable within the other only to unwrap them, just use the ones we need. v2: bring back LOCAL_PATH prefix for nir_constant_expressions,h Cc: 11.0 <[email protected]> Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Matt Turner <[email protected]> (v1)
* nir: add an optimization for removing dead control flowConnor Abbott2015-09-011-0/+1
| | | | | | | v2: use nir_cf_node_remove_after() instead of our own broken thing. v3: use the new control flow modification helpers. Reviewed-by: Kenneth Graunke <[email protected]>
* nir: move control flow modification to its own fileConnor Abbott2015-08-241-0/+3
| | | | | | | | | | | | | | | | We want to start reworking and expanding this code, but it'll be a lot easier to do once we disentangle it from the rest of the stuff in nir.c. Unfortunately, there are a few unavoidable dependencies in nir.c on methods we'd rather not expose publicly, since if not used in very specific situations they can cause Bad Things (tm) to happen. Namely, we need to do some magical control flow munging when adding/removing jumps. In the future, we may disallow adding/removing jumps in nir_instr_insert_*() and nir_instr_remove(), and use separate functions that are part of the control flow modification code, but for now we expose them and put them in a separate, private header. Signed-off-by: Connor Abbott <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* nir: Add a nir_opt_undef() to handle csels with undef.Eric Anholt2015-08-141-0/+1
| | | | | | | | | | | | | | | | | | | We may find a cause to do more undef optimization in the future, but for now this fixes up things after if flattening. vc4 was handling this internally most of the time, but a GLB2.7 shader that did a conditional discard and assign gl_FragColor in the else was still emitting some extra code. total instructions in shared programs: 100809 -> 100795 (-0.01%) instructions in affected programs: 37 -> 23 (-37.84%) v2: Use nir_instr_rewrite_src() to update def/use on src[0] (by Thomas Helland). v3: Make sure to flag metadata dirties, and copy the swizzle and abs/neg over to src[0], too (by anholt). Reviewed-by: Thomas Helland <[email protected]> (v2) Tested-by: Thomas Helland <[email protected]> (v2)
* nir: Add a nir_lower_load_const_to_scalar() pass.Eric Anholt2015-08-041-0/+1
| | | | | | | | This is useful to increase the CSE opportunities for a scalar backend. It avoids regressions when dropping vc4's custom CSE implementation. v2: Cleanups by Matt (decl in the for loop, and unreachable()). Reviewed-by: Matt Turner <[email protected]>
* glsl/ir: add subroutine lowering pass (v2.3)Dave Airlie2015-07-231-0/+1
| | | | | | | | | | | | | | 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]>
* glsl: lower gl_TessLevel* from float[n] to vecn.Fabian Bieler2015-07-231-0/+1
| | | | | | | | | | 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]>
* nir: add nir_array.h to the sources listEmil Velikov2015-05-051-0/+1
| | | | | | | Otherwise `make distcheck' will fail. Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Implement a nir_sweep() pass.Kenneth Graunke2015-04-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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]>
* nir: add lowering for idiv/udiv/umodRob Clark2015-04-051-0/+1
| | | | | | | | | | | | | | | | | 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)
* nir: Add a cubemap normalizing passJason Ekstrand2015-04-031-0/+1
| | | | | | | | | | | | | | | 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]>
* nir: Add a lowering pass for texture projectors.Eric Anholt2015-04-031-0/+1
| | | | | | | 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]>
* nir: Add a dedicated ffma peephole optimizationJason Ekstrand2015-04-011-0/+1
| | | | | | | | | | | | | 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]>
* mesa: Make a shared header for 3D pipeline enum / #defines.Eric Anholt2015-04-011-1/+2
| | | | | | | | | | | | | | | | | | 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)
* nir: add nir_builder.h to the tarballEmil Velikov2015-04-011-0/+1
| | | | | | | | | | | | | | 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]>
* glsl: add the remaining files to the tarballEmil Velikov2015-03-241-0/+1
| | | | | Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glsl: Optimize "if (cond) discard;" to a conditional discard.Kenneth Graunke2015-02-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | 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]>
* nir: Add a global code motion (GCM) passJason Ekstrand2015-02-191-0/+1
| | | | | | | | | 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]>
* nir: Add an ALU op builder kind of like ir_builder.hEric Anholt2015-02-181-0/+1
| | | | | | | | | | | | | | | | | 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)
* nir: add missing header to the sources listEmil Velikov2015-02-121-0/+1
| | | | | | | Cc: "10.5" <[email protected]> Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* nir: add an optimization to remove useless phi nodesConnor Abbott2015-02-031-0/+1
| | | | | | | | | | | | | | | | | | | | 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]>
* nir: Add a pass to lower vector phi nodes to scalar phi nodesJason Ekstrand2015-02-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | 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]>
* nir: add new constant folding infrastructureJason Ekstrand2015-01-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | 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]>
* nir: use Python to autogenerate opcode informationConnor Abbott2015-01-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* nir: Add nir_lower_alu_to_scalar.Eric Anholt2015-01-231-0/+1
| | | | | | | | | | | | | | | | 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]>
* glsl: Build with subdir-objects.Matt Turner2015-01-231-170/+167
| | | | | | 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.
* nir: Add headers to distribution.Matt Turner2015-01-231-0/+2
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* glsl: Add blob.c---a simple interface for serializing dataCarl Worth2015-01-161-0/+2
| | | | | | | | | | | | | | | 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]>
* nir: Add a worklist helper structureJason Ekstrand2015-01-151-0/+2
| | | | | | | 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]>
* nir: Add a pass for lowering copy instructionsJason Ekstrand2015-01-151-0/+1
| | | | Reviewed-by: Connor Abbott <[email protected]>
* nir: Rename lower_variables to lower_vars_to_ssaJason Ekstrand2015-01-151-1/+1
| | | | | | | | 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]>
* nir: Remove the ffma peepholeJason Ekstrand2015-01-151-1/+0
| | | | | | | This is no longer needed because it's now part of the algebraic optimization pass Reviewed-by: Connor Abbott <[email protected]>
* nir: Add a basic constant folding passJason Ekstrand2015-01-151-0/+1
| | | | Reviewed-by: Connor Abbott <[email protected]>
* nir: Add an algebraic optimization passJason Ekstrand2015-01-151-1/+5
| | | | | | | | | 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]>
* nir: Add an expression matching frameworkJason Ekstrand2015-01-151-0/+2
| | | | | | | | | | | | | | | 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]>
* nir: Add a lowering pass for adding source modifiers where possibleJason Ekstrand2015-01-151-0/+1
| | | | Reviewed-by: Connor Abbott <[email protected]>
* nir: Remove the old variable lowering codeJason Ekstrand2015-01-151-1/+0
| | | | Reviewed-by: Connor Abbott <[email protected]>
* nir: Add a pass to lower global variables to local variablesJason Ekstrand2015-01-151-0/+1
| | | | Reviewed-by: Connor Abbott <[email protected]>
* nir: Add a pass for lowering input/output loads/storesJason Ekstrand2015-01-151-0/+1
| | | | Reviewed-by: Connor Abbott <[email protected]>
* nir: Add a pass to lower local variables to registersJason Ekstrand2015-01-151-0/+1
| | | | Reviewed-by: Connor Abbott <[email protected]>
* nir: Add a pass to lower local variable accesses to SSA valuesJason Ekstrand2015-01-151-0/+1
| | | | | | | | | 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]>
* nir: Add a copy splitting passJason Ekstrand2015-01-151-0/+1
| | | | Reviewed-by: Connor Abbott <[email protected]>
* nir: Add a basic CSE passJason Ekstrand2015-01-151-0/+1
| | | | | | | 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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