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* nir: add opcode to perform int64 to bool conversionsSamuel Iglesias Gonsálvez2017-02-091-0/+1
| | | | | | Signed-off-by: Samuel Iglesias Gonsálvez <[email protected]> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99660 Reviewed-by: Lionel Landwerlin <[email protected]>
* nir: add extra const notation in compare_blocks()Emil Velikov2017-01-271-2/+2
| | | | | | | | | | | MSVC warns about different const qualifiers. Add the extra const to silence it. nir_phi_builder.c(244) : warning C4090: 'initializing' : different 'const' qualifiers nir_phi_builder.c(245) : warning C4090: 'initializing' : different 'const' qualifiers Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Lionel Landwerlin <[email protected]>
* nir: silence implicit conversion to 64bitEmil Velikov2017-01-271-1/+1
| | | | | | | | | | | | MSVC warns about implicit conversion as below. Annotate the literal appropriately to silence the warning. nir_gather_info.c(249) : warning C4334: '<<' : result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?) Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Lionel Landwerlin <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: bump loop max unroll limitTimothy Arceri2017-01-251-1/+1
| | | | | | | | | | | | | | | | | | The original number was chosen in an attempt to match the limits applied to GLSL IR. A look at the git history of the why these limits were chosen for GLSL IR shows it was more to do with the slow speed of unrolling large loops in GLSL IR than anything else. The speed of loop unrolling in NIR is not a problem so we may wish to bump this even higher in future. No shader-db change, however a furture change will disbale the GLSL IR optimisation loop in the i965 backend results in 4 loops from The Talos Principle failing to unroll. Bumping the limit allows them to unroll which results in the instruction count matching the previous output from when the GLSL IR opts were still enabled. Reviewed-by: Jason Ekstrand <[email protected]>
* nir/search: Use the correct bit size for integer comparisonsJason Ekstrand2017-01-211-32/+16
| | | | | | | | | | | | | | | | | | The previous code always compared integers as 64-bit. Due to variations in sign-extension in the code generated by nir_opt_algebraic.py, this meant that nir_search doesn't always do what you want. Instead, 32-bit values should be matched as 32-bit and 64-bit values should be matched as 64-bit. While we're here we unify the unsigned and signed paths. Now that we're using the right bit size, they should be the same since the only difference we had before was sign extension. This gets the UE4 bitfield_extract optimization working again. It had stopped working due to the constant 0xff00ff00 getting sign-extended when it shouldn't have. Reviewed-by: Iago Toral Quiroga <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Cc: "17.0 13.0" <[email protected]>
* nir: Add support for 64-bit integer types to split_var_copies_blockIan Romanick2017-01-201-0/+2
| | | | | Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* nir: Shift count for shift opcodes is always 32-bitsIan Romanick2017-01-202-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously both sources were unsized. This caused problems when the thing being shifted was 64-bit but the shift count was 32-bit. The expectation in NIR is that all unsized sources (and destination) will ultimately have the same size. The changes in nir_opt_algebraic.py are to prevent errors like: Failed to parse transformation: 03:12:25 (('extract_i8', 'a', 'b'), ('ishr', ('ishl', 'a', ('imul', ('isub', 3, 'b'), 8)), 24), 'options->lower_extract_byte') 03:12:25 Traceback (most recent call last): 03:12:25 File "/home/jenkins/workspace/Leeroy_2/repos/mesa/src/compiler/nir/nir_algebraic.py", line 610, in __init__ 03:12:25 xform = SearchAndReplace(xform) 03:12:25 File "/home/jenkins/workspace/Leeroy_2/repos/mesa/src/compiler/nir/nir_algebraic.py", line 495, in __init__ 03:12:25 BitSizeValidator(varset).validate(self.search, self.replace) 03:12:25 File "/home/jenkins/workspace/Leeroy_2/repos/mesa/src/compiler/nir/nir_algebraic.py", line 311, in validate 03:12:25 validate_dst_class = self._validate_bit_class_up(replace) 03:12:25 File "/home/jenkins/workspace/Leeroy_2/repos/mesa/src/compiler/nir/nir_algebraic.py", line 414, in _validate_bit_class_up 03:12:25 src_class = self._validate_bit_class_up(val.sources[i]) 03:12:25 File "/home/jenkins/workspace/Leeroy_2/repos/mesa/src/compiler/nir/nir_algebraic.py", line 420, in _validate_bit_class_up 03:12:25 assert src_class == src_type_bits 03:12:25 AssertionError Signed-off-by: Ian Romanick <[email protected]> Suggested-by: Connor Abbott <[email protected]> Reviewed-by: Connor Abbott <[email protected]> Cc: Jason Ekstrand <[email protected]>
* nir: Lower packing and unpacking of 64-bit integer typesIan Romanick2017-01-201-5/+37
| | | | | | | | | This change makes me wonder whether double packing should be reimplemented as int64BitsToDouble(packInt2x32(v)). I'm a little on the fence since not all platforms that support fp64 natively support int64. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* nir: Add 64-bit integer support for conversions and bitcastsIan Romanick2017-01-202-1/+30
| | | | | | | | | | | | | | v2 (idr): "cut them down later" => Remove ir_unop_b2u64 and ir_unop_u642b. Handle these with extra i2u or u2i casts just like uint(bool) and bool(uint) conversion is done. v3 (idr): Make the "from" type in a cast unsized. This reduces the number of required cast operations at the expensive slightly more complex code. However, this will be a dramatic improvement when other sized integer types are added. Suggested by Connor. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* nir: Add 64-bit integer constant supportIan Romanick2017-01-202-0/+13
| | | | | | | v2: Rebase on 19a541f (nir: Get rid of nir_constant_data) Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Connor Abbott <[email protected]> [v1]
* nir: add min/max optimisationElie TOURNIER2017-01-191-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add the following optimisations: min(x, -x) = -abs(x) min(x, -abs(x)) = -abs(x) min(x, abs(x)) = x max(x, -abs(x)) = x max(x, abs(x)) = abs(x) max(x, -x) = abs(x) shader-db: total instructions in shared programs: 13067779 -> 13067775 (-0.00%) instructions in affected programs: 249 -> 245 (-1.61%) helped: 4 HURT: 0 total cycles in shared programs: 252054838 -> 252054806 (-0.00%) cycles in affected programs: 504 -> 472 (-6.35%) helped: 2 HURT: 0 Signed-off-by: Elie Tournier <[email protected]> Reviewed-by: Plamena Manolova <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir/algebraic: Only include nir_search_helpers onceJason Ekstrand2017-01-191-1/+1
| | | | | | | We were including it once per value, so probably around 10k times. Let's not cause the compiler any more work than we have to. Reviewed-by: Iago Toral Quiroga <[email protected]>
* nir/gcm: fix a bug with metadata handlingConnor Abbott2017-01-141-3/+3
| | | | | | | | | | | We were using impl->num_blocks, but that isn't guaranteed to be up-to-date until after the block_index metadata is required. If we were unlucky, this could lead to overwriting memory. Noticed by inspection. Signed-off-by: Connor Abbott <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: optimise min/max fadd combosTimothy Arceri2017-01-142-0/+26
| | | | | | | | | | | | | | | | shader-db results BDW: total instructions in shared programs: 13060410 -> 13060313 (-0.00%) instructions in affected programs: 24533 -> 24436 (-0.40%) helped: 88 HURT: 0 total cycles in shared programs: 256585692 -> 256586698 (0.00%) cycles in affected programs: 647290 -> 648296 (0.16%) helped: 35 HURT: 30 Reviewed-by: Matt Turner <[email protected]>
* nir/gcm: Fix a typo in a commentJason Ekstrand2017-01-121-1/+1
| | | | Reported-by: Matt Turner <[email protected]>
* nir/gcm: Rework the schedule late loopJason Ekstrand2017-01-121-5/+6
| | | | | | | | | | | | This fixes a bug in code motion that occurred when the best block is the same as the schedule early block. In this case, because we're checking (lca != def->parent_instr->block) at the top of the loop, we never get to the check for loop depth so we wouldn't move it out of the loop. This commit reworks the loop to be a simple for loop up the dominator chain and we place the (lca != def->parent_instr->block) check at the end of the loop. Reviewed-by: Matt Turner <[email protected]>
* nir: don't turn ieq/ine into inot if used by an ifTimothy Arceri2017-01-122-2/+8
| | | | | | | | | | | | | | | | | | | Otherwise we will end up with an extra instruction to compare the result of the inot. On BDW: total instructions in shared programs: 13060620 -> 13060481 (-0.00%) instructions in affected programs: 103379 -> 103240 (-0.13%) helped: 127 HURT: 0 total cycles in shared programs: 256590950 -> 256587408 (-0.00%) cycles in affected programs: 11324730 -> 11321188 (-0.03%) helped: 114 HURT: 21 Reviewed-by: Jason Ekstrand <[email protected]>
* nir: add late opt to turn inot/b2f combos back to bcselTimothy Arceri2017-01-122-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | We turn these from bcsel into inot/b2f combos in order for other optimisation passes to get further. Once we have finished turn the ones that remain and are used in more than a single expression back into a bcsel. On BDW: total instructions in shared programs: 13060965 -> 13060297 (-0.01%) instructions in affected programs: 835701 -> 835033 (-0.08%) helped: 670 HURT: 2 total cycles in shared programs: 256599536 -> 256598006 (-0.00%) cycles in affected programs: 114655488 -> 114653958 (-0.00%) helped: 419 HURT: 240 LOST: 0 GAINED: 1 The 2 HURT is because inserting bcsel creates the only use of const 1.0 in two shaders from tri-of-friendship-and-madness. Reviewed-by: Jason Ekstrand <[email protected]>
* nir: add imprecise flrp optimisationTimothy Arceri2017-01-121-0/+1
| | | | | | | | | | | | | | | | | | On BDW: total instructions in shared programs: 13061890 -> 13061877 (-0.00%) instructions in affected programs: 2441 -> 2428 (-0.53%) helped: 13 HURT: 0 total cycles in shared programs: 256612254 -> 256611784 (-0.00%) cycles in affected programs: 16418 -> 15948 (-2.86%) helped: 10 HURT: 2 V2: don't use ffma directly Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Introduce a nir_opt_move_comparisons() pass.Kenneth Graunke2017-01-122-0/+187
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This tries to move comparisons (a common source of boolean values) closer to their first use. For GPUs which use condition codes, this can eliminate a lot of temporary booleans and comparisons which reload the condition code register based on a boolean. V2: (Timothy Arceri) - fix move comparision for phis so we dont end up with: vec1 32 ssa_227 = phi block_34: ssa_1, block_38: ssa_240 vec1 32 ssa_235 = feq ssa_227, ssa_1 vec1 32 ssa_230 = phi block_34: ssa_221, block_38: ssa_235 - add nir_op_i2b/nir_op_f2b to the list of comparisons. V3: (Timothy Arceri) - tidy up suggested by Jason. - add inot/fnot to move comparison list V4: (Jason Ekstrand) - clean up move_comparison_source - get rid of the tuple - rework phi handling Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> [v1] Reviewed-by: Jason Ekstrand <[email protected]>
* nir/algebraic: add support for conditional helper functions to expressionsTimothy Arceri2017-01-123-1/+15
| | | | Reviewed-by: Jason Ekstrand <[email protected]>
* nir/search: Only allow matching SSA valuesJason Ekstrand2017-01-111-5/+11
| | | | | | | | This is more correct and should also be a tiny bit faster since we're just comparing pointers instead of calling nir_src_equal. Reviewed-by: Timothy Arceri <[email protected]> Cc: "13.0" <[email protected]>
* nir: change asserts to unreachable in nir_type_conversion_opTapani Pälli2017-01-111-3/+3
| | | | | | | | | this is to avoid following compilation error on Android: error: control may reach end of non-void function [-Werror,-Wreturn-type] Signed-off-by: Tapani Pälli <[email protected]> Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
* nir: Add a pass to lower TES patch_vertices intrinsics to a constant.Kenneth Graunke2017-01-102-0/+54
| | | | | | | | | | | | | | In Vulkan, we always have both the TCS and TES available in the same pipeline, so we can simply use the TCS OutputVertices execution mode value as the TES PatchVertices built-in. For GLSL, we handle this in the linker. But we could use this pass in the case when both TCS and TES are linked together, if we wanted. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Dave Airlie <[email protected]> Reviewed-by: Iago Toral Quiroga <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Fix anonymous union initialization with older GCC.Vinson Lee2017-01-091-1/+1
| | | | | | | | | | | | | | | Fix this build error with GCC 4.4.7. CC nir/nir_opt_copy_prop_vars.lo nir/nir_opt_copy_prop_vars.c: In function ‘copy_prop_vars_block’: nir/nir_opt_copy_prop_vars.c:765: error: unknown field ‘deref’ specified in initializer nir/nir_opt_copy_prop_vars.c:765: warning: missing braces around initializer nir/nir_opt_copy_prop_vars.c:765: warning: (near initialization for ‘(anonymous).<anonymous>’) nir/nir_opt_copy_prop_vars.c:765: warning: initialization from incompatible pointer type Fixes: 62332d139c8f ("nir: Add a local variable-based copy propagation pass") Signed-off-by: Vinson Lee <[email protected]> Acked-by: Jason Ekstrand <[email protected]>
* nir: remove duplicated foreach loopThomas Hindoe Paaboel Andersen2017-01-091-1/+0
| | | | | | | | The foreach loop was called both in the else case and right after. The indentation seems to indicate that the extra call was from a previous version with an else section with out curly brackets. Reviewed-by: Jason Ekstrand <[email protected]>
* nir/i965: use two slots from inputs_read for dvec3/dvec4 vertex input attributesJuan A. Suarez Romero2017-01-091-25/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So far, input_reads was a bitmap tracking which vertex input locations were being used. In OpenGL, an attribute bigger than a vec4 (like a dvec3 or dvec4) consumes just one location, any other small attribute. So we mark the proper bit in inputs_read, and also the same bit in double_inputs_read if the attribute is a dvec3/dvec4. But in Vulkan, this is slightly different: a dvec3/dvec4 attribute consumes two locations, not just one. And hence two bits would be marked in inputs_read for the same vertex input attribute. To avoid handling two different situations in NIR, we just choose the latest one: in OpenGL, when creating NIR from GLSL/IR, any dvec3/dvec4 vertex input attribute is marked with two bits in the inputs_read bitmap (and also in the double_inputs_read), and following attributes are adjusted accordingly. As example, if in our GLSL/IR shader we have three attributes: layout(location = 0) vec3 attr0; layout(location = 1) dvec4 attr1; layout(location = 2) dvec3 attr2; then in our NIR shader we put attr0 in location 0, attr1 in locations 1 and 2, and attr2 in location 3 and 4. Checking carefully, basically we are using slots rather than locations in NIR. When emitting the vertices, we do a inverse map to know the corresponding location for each slot. v2 (Jason): - use two slots from inputs_read for dvec3/dvec4 NIR from GLSL/IR. v3 (Jason): - Fix commit log error. - Use ladder ifs and fix braces. - elements_double is divisible by 2, don't need DIV_ROUND_UP(). - Use if ladder instead of a switch. - Add comment about hardware restriction in 64bit vertex attributes. Reviewed-by: Jason Ekstrand <[email protected]>
* nir: add nir_type_conversion_op()Samuel Iglesias Gonsálvez2017-01-092-0/+83
| | | | | | | | | | | | | | This function returns the nir_op corresponding to the conversion between the given nir_alu_type arguments. This function lacks support for integer-based types with bit_size != 32 and for float16 conversion ops. v2: - Improve readiness of the code and delete cases that don't happen now (Jason) Signed-off-by: Samuel Iglesias Gonsálvez <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: add nir_get_nir_type_for_glsl_type()Samuel Iglesias Gonsálvez2017-01-091-0/+24
| | | | | | | | | | | v2 (Jason): - Refactor nir_get_nir_type_for_glsl_type() to avoid using unneeded helpers (Jason) v3: - Use return directly (Jason) Signed-off-by: Samuel Iglesias Gonsálvez <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: add another comparison simplificationTimothy Arceri2017-01-091-0/+2
| | | | | | | | | | | | | | | | On BDW: total instructions in shared programs: 13061877 -> 13060965 (-0.01%) instructions in affected programs: 133569 -> 132657 (-0.68%) helped: 566 HURT: 0 total cycles in shared programs: 256611784 -> 256599536 (-0.00%) cycles in affected programs: 861016 -> 848768 (-1.42%) helped: 379 HURT: 73 Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Turn bcsel of +/- 1.0 and 0.0 into b2f sequences.Kenneth Graunke2017-01-091-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On BDW: total instructions in shared programs: 13074882 -> 13068703 (-0.05%) instructions in affected programs: 1823116 -> 1816937 (-0.34%) helped: 4187 HURT: 537 total cycles in shared programs: 256622718 -> 256425382 (-0.08%) cycles in affected programs: 123790120 -> 123592784 (-0.16%) helped: 3823 HURT: 2037 total spills in shared programs: 15276 -> 14929 (-2.27%) spills in affected programs: 9446 -> 9099 (-3.67%) helped: 352 HURT: 1 total fills in shared programs: 20496 -> 20144 (-1.72%) fills in affected programs: 13040 -> 12688 (-2.70%) helped: 352 HURT: 1 LOST: 2 GAINED: 21 v2: Rely on 'a' being a well-formed boolean (Connor, Eric). Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Timothy Arceri <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Convert ineg(b2i(a)) to a if it's a boolean.Kenneth Graunke2017-01-091-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | On BDW: total instructions in shared programs: 13071119 -> 13070371 (-0.01%) instructions in affected programs: 83424 -> 82676 (-0.90%) helped: 505 HURT: 45 (all TCS, all hurt by a single instruction) total cycles in shared programs: 256601322 -> 256588932 (-0.00%) cycles in affected programs: 819410 -> 807020 (-1.51%) helped: 450 HURT: 57 total loops in shared programs: 2950 -> 2942 (-0.27%) loops in affected programs: 8 -> 0 helped: 7 HURT: 0 v2: Drop unnecessary 'a@bool' annotation (Connor, Eric). Add a comment explaining the rule (Ian). Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> [v1] Reviewed-by: Timothy Arceri <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* nir: Add a local variable-based copy propagation passJason Ekstrand2017-01-062-0/+815
| | | | Reviewed-by: Timothy Arceri <[email protected]>
* nir/builder: Add a helper for getting the most recently added instructionJason Ekstrand2017-01-061-0/+7
| | | | Reviewed-by: Timothy Arceri <[email protected]>
* nir/builder: Add a load_deref_var helperJason Ekstrand2017-01-061-0/+16
| | | | Reviewed-by: Timothy Arceri <[email protected]>
* nir/dead_variables: Remove shader-local variables that are only writtenJason Ekstrand2017-01-061-9/+60
| | | | Reviewed-by: Timothy Arceri <[email protected]>
* nir/dead_variables: Removed shared variables when requestedJason Ekstrand2017-01-061-0/+3
| | | | Reviewed-by: Timothy Arceri <[email protected]>
* nir: fix loop iteration count calculation for floatsTimothy Arceri2017-01-041-2/+2
| | | | | | | | | | | | Fixes performance regression in SynMark PSPom caused by loops with float counters not always unrolling. For example: for (float i = 0.02; i < 0.9; i += 0.11) ... Reviewed-by: Jason Ekstrand <[email protected]>
* nir/split_var_copies: Use a nir_shader rather than a void *mem_ctxJason Ekstrand2016-12-301-3/+3
| | | | | Reviewed-by: Eduardo Lima Mitev <[email protected]> Reviewed-by: Jordan Justen <[email protected]>
* nir/opt_peephole_select: Pass around the actual nir_shaderJason Ekstrand2016-12-301-4/+5
| | | | | Reviewed-by: Eduardo Lima Mitev <[email protected]> Reviewed-by: Jordan Justen <[email protected]>
* nir/conditional_if: Properly use the builderJason Ekstrand2016-12-301-11/+10
| | | | | | | | | | We were passing around a void *mem_ctx and using that to initialize the builder which was wrong since that pointed to ralloc_parent(impl) which is the shader but the builder is supposed to be initialized with the nir_function_impl. Reviewed-by: Eduardo Lima Mitev <[email protected]> Reviewed-by: Jordan Justen <[email protected]>
* nir/lower_var_copies: Use a shader rather than a void *mem_ctxJason Ekstrand2016-12-302-9/+10
| | | | | Reviewed-by: Eduardo Lima Mitev <[email protected]> Reviewed-by: Jordan Justen <[email protected]>
* nir/lower_io: Use the builder instead of carrying a mem_ctxJason Ekstrand2016-12-301-8/+8
| | | | | Reviewed-by: Eduardo Lima Mitev <[email protected]> Reviewed-by: Jordan Justen <[email protected]>
* nir/from_ssa: Use nir_builder for emit_copyJason Ekstrand2016-12-301-13/+13
| | | | | | | | This lets us get rid of the void *mem_ctx parameter and make things a bit more type safe. Reviewed-by: Eduardo Lima Mitev <[email protected]> Reviewed-by: Jordan Justen <[email protected]>
* nir: Make nir_copy_deref follow the "clone" patternJason Ekstrand2016-12-308-45/+37
| | | | | | | | | We rename it to nir_deref_clone, re-order the sources to match the other clone functions, and expose nir_deref_var_clone. This past part, in particular, lets us get rid of quite a few lines since we no longer have to call nir_copy_deref and wrap it in deref_as_var. Reviewed-by: Jordan Justen <[email protected]>
* nir: Rewrite lower_regs_to_ssa to use the phi builderJason Ekstrand2016-12-291-421/+174
| | | | | This keeps some of Connor's original code. However, while I was at it, I updated this very old pass to a bit more modern NIR.
* nir/phi-builder: Set the value in the block when creating a phiJason Ekstrand2016-12-291-1/+1
| | | | | | | | | After we figure out the value that we are going to return, we have a loop that walks up the dominance tree and sets the value in each of the blocks that doesn't have one yet. In the case of the phi, the def is set to NEEDS_PHI not NULL, so the last one where the phi node actually goes never gets filled out. This can lead to duplicating the phi node unnecessarily.
* nir: Add foreach_register helper macrosJason Ekstrand2016-12-291-0/+5
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* nir: Rename convert_to_ssa lower_regs_to_ssaJason Ekstrand2016-12-295-9/+8
| | | | This matches the naming of nir_lower_vars_to_ssa, the other to-SSA pass.
* nir: stop gcc warning about uninitialised variablesTimothy Arceri2016-12-291-1/+1
| | | | Reviewed-by: Jason Ekstrand <[email protected]>
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