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* glsl: optimize (0 cmp x + y) into (-x cmp y).Samuel Iglesias Gonsalvez2015-03-131-3/+12
| | | | | | | | | | | | | The optimization done by commit 34ec1a24d did not take it into account. Fixes: dEQP-GLES3.functional.shaders.random.all_features.fragment.20 Signed-off-by: Samuel Iglesias Gonsalvez <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]> Cc: "10.4 10.5" <[email protected]>
* nir: Fix non-determinism in nir_lower_vars_to_ssa().Kenneth Graunke2015-03-121-97/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | Previously, we stored derefs in a hash table, using the malloc'd pointer as the key. Then, we walked through the hash table and generated code, based on the order of the hash table's elements. Memory addresses returned by malloc are pretty much random, which meant that the hash was random, and the hash table's elements would be walked in some random order. This led to successive compiles of the same shader using different variable names and slightly different orderings of phi-nodes. Code could not be diff'd, and the final assembly would sometimes change slightly too. It turns out the only point of the hash table was to avoid inserting the same node multiple times for different dereferences. We never actually searched the hash table! This patch uses an intrusive linked list instead. Since exec_list uses head and tail sentinels, checking prev or next against NULL will tell us whether the node is already in the list. Pair programming with Jason Ekstrand. Signed-off-by: Jason Ekstrand <[email protected]> Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* util: Fix foreach_list_typed_safe when exec_node is not at offset 0.Jason Ekstrand2015-03-121-2/+2
| | | | | | | | | | | | | | | | | | | | __next and __prev are pointers to the structure containing the exec_node link, not the embedded exec_node. NULL checks would fail unless the embedded exec_node happened to be at offset 0 in the parent struct. v2: Jason Ekstrand <[email protected]>: Use "(__node)->__field.next != NULL" to check for the end of the list instead of the "&__next->__field != NULL". The former is far more obviously correct as it matches what the non-safe versions do. The original code tried to avoid any use of __next as the client code may delete it during its execution. However, since the looping condition is checked after the iteration clause but before the client code is executed, we know that __node is valid during the looping condition. Signed-off-by: Jason Ekstrand <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* nir: Add intrinsics for SYSTEM_VALUE_BASE_VERTEX and VERTEX_ID_ZERO_BASEKenneth Graunke2015-03-122-0/+8
| | | | | | | | | Ian and I added these around the time Connor was developing NIR. Now that both exist, we should make them work together! Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir/worklist: Don't change the start index when computing the tail indexJason Ekstrand2015-03-112-7/+7
| | | | Reviewed-by: Mark Janes <[email protected]>
* nir: Optimize a + neg(a)Thomas Helland2015-03-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | Shader-db i965 instructions: total instructions in shared programs: 1711180 -> 1711159 (-0.00%) instructions in affected programs: 825 -> 804 (-2.55%) helped: 9 HURT: 0 GAINED: 3 LOST: 3 Shader-db NIR instructions: total instructions in shared programs: 606187 -> 606179 (-0.00%) instructions in affected programs: 298 -> 290 (-2.68%) helped: 4 HURT: 0 GAINED: 0 LOST: 0 Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]> Signed-off-by: Thomas Helland <[email protected]>
* nir: Optimize (a*b)+(a*c) -> a*(b+c)Thomas Helland2015-03-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | Shader-db i965 instructions: total instructions in shared programs: 1715894 -> 1710802 (-0.30%) instructions in affected programs: 443080 -> 437988 (-1.15%) helped: 1502 HURT: 13 GAINED: 4 LOST: 4 Shader-db NIR instructions: total instructions in shared programs: 607710 -> 606187 (-0.25%) instructions in affected programs: 208285 -> 206762 (-0.73%) helped: 769 HURT: 8 GAINED: 0 LOST: 0 Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]> Signed-off-by: Thomas Helland <[email protected]>
* nir: Make the printer include nir_variable::location too.Kenneth Graunke2015-03-091-1/+1
| | | | | | | | | Being able to see both location and driver_location can be useful when debugging IO mistakes. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* nir: Only do gl_FrontFacing workaround in glsl_to_nir for the FS.Kenneth Graunke2015-03-081-1/+2
| | | | | | | | | | | | Vertex shaders can have shader inputs where location happens to be VARYING_SLOT_FACE. Without predicating this on the shader stage, we suddenly end up with load_front_face intrinsics in vertex shaders, which is nonsensical. Fixes spec/arb_vertex_buffer_object/pos-array when using NIR for VS. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Plumb the shader stage into glsl_to_nir().Kenneth Graunke2015-03-082-7/+9
| | | | | | | | | The next commit needs to know the shader stage in glsl_to_nir(). To facilitate that, we pass the gl_shader rather than the raw exec_list of instructions. This has both the exec_list and the stage. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Add native_integers to nir_shader_compiler_options.Kenneth Graunke2015-03-083-7/+12
| | | | | | | | | | | glsl_to_nir, tgsi_to_nir, and prog_to_nir all want to know whether the driver supports native integers. Presumably other passes may as well. Adding this to nir_shader_compiler_options is an easy way to provide that information, as it's accessible via nir_shader::options. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Try to make sense of the nir_shader_compiler_options code.Kenneth Graunke2015-03-082-28/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | The code in glsl_to_nir is entirely dead, as we translate from GLSL to NIR at link time, when there isn't a _mesa_glsl_parse_state to pass, so every caller passes NULL. glsl_to_nir seems like the wrong place to try and create the shader compiler options structure anyway - tgsi_to_nir, prog_to_nir, and other translators all would have to duplicate that code. The driver should set this up once with whatever settings it wants, and pass it in. Eric also added a NirOptions field to ctx->Const.ShaderCompilerOptions[] and left a comment saying: "The memory for the options is expected to be kept in a single static copy by the driver." This suggests the plan was to do exactly that. That pointer was not marked const, however, and the dead code used a mix of static structures and ralloced ones. This patch deletes the dead code in glsl_to_nir, instead making it take the shader compiler options as a mandatory argument. It creates an (empty) options struct in the i965 driver, and makes NirOptions point to that. It marks the pointer const so that we can actually do so without generating "discards const qualifier" compiler warnings. Signed-off-by: Kenneth Graunke <[email protected]> Acked-by: Jason Ekstrand <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* nir: Delete nir_shader::user_structures and num_user_structures.Kenneth Graunke2015-03-084-22/+0
| | | | | | | | | | | Nothing actually uses these, and the only caller of glsl_to_nir() (brw_fs_nir.cpp) always passes NULL for the _mesa_glsl_parse_state pointer, meaning they'll always be NULL and 0, respectively. Just delete them. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* glsl: Mark array access when copying to a temporary for the ?: operator.Kenneth Graunke2015-03-081-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Piglit's spec/glsl-1.20/compiler/structure-and-array-operations/ array-selection.vert test contains the following code: gl_Position = (pick_from_a_or_b ? a : b)[i]; where "a" and "b" are uniform vec4[2] variables. ast_to_hir creates a temporary vec4[2] variable, conditional_tmp, and generates an if-block to copy one or the other: (declare (temporary) (array vec4 2) conditional_tmp) (if (var_ref pick_from_a_or_b) ((assign () (var_ref conditional_tmp) (var_ref a))) ((assign () (var_ref conditional_tmp) (var_ref b)))) However, we failed to update max_array_access for "a" and "b", so it remained 0 - here, the whole array is being accessed. At link time, update_array_sizes() used this bogus information to change the types of "a" and "b" to vec4[1]. We then had assignments from a vec4[1] to a vec4[2], which is highly illegal. This tripped assertions in nir_split_var_copies with scalar VS. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]> Cc: [email protected]
* glsl: let interface linking code validate its arraysTimothy Arceri2015-03-061-1/+2
| | | | | | Currently intrastage arrays are validated twice for interface blocks. Reviewed-by: Mark Janes <[email protected]>
* glsl: use common intrastage array validationTimothy Arceri2015-03-061-37/+37
| | | | | | | | | | | Use common intrastage array validation for interface blocks. This change also allows us to support interface blocks that are arrays of arrays. V2: Reinsert unsized array asserts in interstage_match() Reviewed-by: Mark Janes <[email protected]>
* glsl: move array validation into its own functionTimothy Arceri2015-03-062-39/+55
| | | | | | V2: return true when var->type is unsized but max access is within valid range Reviewed-by: Mark Janes <[email protected]>
* glsl: include stdio.h where neededBrian Paul2015-03-052-0/+2
| | | | | Acked-by: Matt Turner <[email protected]> Reviewed-by: José Fonseca <[email protected]>
* glsl: Fix GCC unused-variable warning in release build.Vinson Lee2015-03-041-3/+1
| | | | | | | | | | | CXX ast_array_index.lo ast_array_index.cpp: In function ‘void update_max_array_access(ir_rvalue*, int, YYLTYPE*, _mesa_glsl_parse_state*)’: ast_array_index.cpp:86:30: warning: unused variable ‘interface_type’ [-Wunused-variable] const glsl_type *interface_type = ^ Signed-off-by: Vinson Lee <[email protected]> Reviewed-by: Timothy Arceri <[email protected]>
* scons: Use -Werror MSVC compatibility flags per-directory.Jose Fonseca2015-03-041-0/+2
| | | | | | Matching what we already do with autotools builds. Reviewed-by: Brian Paul <[email protected]>
* nir: Use helper macros for dealing with VLAs.Jose Fonseca2015-03-044-24/+69
| | | | | | | | | | v2: - Single statement, by using memset return value as suggested by Ian Romanick. - No internal declaration, as suggested by Jason Ekstrand. - Move macros to a header. Reviewed-by: Jason Ekstrand <[email protected]>
* configure: Leverage gcc warn options to enable safe use of C99 features ↵Jose Fonseca2015-03-031-2/+6
| | | | | | | | | | | | | | | | | | | | | | | where possible. The main objective of this change is to enable Linux developers to use more of C99 throughout Mesa, with confidence that the portions that need to be built with MSVC -- and only those portions --, stay portable. This is achieved by using the appropriate -Werror= options only on the places they need to be used. Unfortunately we still need MSVC 2008 on a few portions of the code (namely llvmpipe and its dependencies). I hope to eventually eliminate this so that we can use C99 everywhere, but there are technical/logistic challenges (specifically, newer Windows SDKs no longer bundle MSVC, instead require a full installation of Visual Studio, and that has hindered adoption of newer MSVC versions on our build processes.) Thankfully we have more directy control over our OpenGL driver, which is why we're now able to migrate to MSVC 2013 for most of the tree. Reviewed-by: Brian Paul <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: replace Elements() with ARRAY_SIZE()Brian Paul2015-03-0211-22/+22
| | | | Acked-by: Ilia Mirkin <[email protected]>
* Revert "configure: Leverage gcc warn options to enable safe use of C99 ↵Kenneth Graunke2015-02-271-6/+2
| | | | | | | | | features where possible." This reverts commit 79daa510c7a871a33797308a2ccb4b83a067ffbe. I apparently hadn't done a clean build when testing this; it broke the build for Tom, Ben, and myself. We like the idea; let's try a v2.
* glsl: silence uninitialized var warning on MinGWBrian Paul2015-02-271-0/+1
| | | | Reviewed-by: Anuj Phogat <[email protected]>
* configure: Leverage gcc warn options to enable safe use of C99 features ↵Jose Fonseca2015-02-271-2/+6
| | | | | | | | | | | | | | | | | | | | | | | where possible. The main objective of this change is to enable Linux developers to use more of C99 throughout Mesa, with confidence that the portions that need to be built with MSVC -- and only those portions --, stay portable. This is achieved by using the appropriate -Werror= options only on the places they need to be used. Unfortunately we still need MSVC 2008 on a few portions of the code (namely llvmpipe and its dependencies). I hope to eventually eliminate this so that we can use C99 everywhere, but there are technical/logistic challenges (specifically, newer Windows SDKs no longer bundle MSVC, instead require a full installation of Visual Studio, and that has hindered adoption of newer MSVC versions on our build processes.) Thankfully we have more directy control over our OpenGL driver, which is why we're now able to migrate to MSVC 2013 for most of the tree. Reviewed-by: Brian Paul <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* nir: Use alloca instead of variable length arrays.Jose Fonseca2015-02-273-16/+21
| | | | | | | | This is to enable the code to build with -Werror=vla in the short term, and enable the code to build with MSVC2013 soon after. Reviewed-by: Brian Paul <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* mesa: only include ctype.h where it's usedBrian Paul2015-02-261-0/+1
| | | | | Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Jose Fonseca <[email protected]>
* glsl: #include c99_math.h instead of core.hBrian Paul2015-02-261-1/+1
| | | | | | | We only need the M_LOG2E definition. Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Jose Fonseca <[email protected]>
* glsl: Rewrite and fix min/max to saturate optimization.Matt Turner2015-02-251-29/+46
| | | | | | | | | | | | | | | | | | | | | | There were some bugs, and the code was really difficult to follow. We would optimize min(max(x, b), 1.0) into max(sat(x), b) but not pay attention to the order of min/max and also do max(min(x, b), 1.0) into max(sat(x), b) Corrects four shaders from Champions of Regnum that do min(max(x, 1), 10) and corrects rendering of Mass Effect under VMware Workstation. Cc: "10.4 10.5" <[email protected]> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89180 Reviewed-by: Abdiel Janulgue <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: add double support for packing varyingsIlia Mirkin2015-02-241-27/+90
| | | | | | | | | Doubles are always packed, but a single double will never cross a slot boundary -- single slots can still be wasted in some situations. Signed-off-by: Ilia Mirkin <[email protected]> Reviewed-by: Dave Airlie <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glcpp: remove unneeded #include of core.hBrian Paul2015-02-241-1/+0
| | | | | | isblank() is not used in the code. Reviewed-by: Matt Turner <[email protected]>
* glsl: Optimize "if (cond) discard;" to a conditional discard.Kenneth Graunke2015-02-244-0/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | 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: Introduce nir_intrinsic_discard_if.Kenneth Graunke2015-02-242-2/+10
| | | | | | | | | | | | This is a conditional discard, which takes a boolean source. Note that we don't generate ir_discard::condition today, so this shouldn't break drivers (since none implement this intrinsic yet). 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]>
* glsl: Delete dead discard conditions in constant folding.Kenneth Graunke2015-02-241-0/+24
| | | | | | | | | | | | | | | | opt_constant_folding() already detects conditional assignments where the condition is constant, and either deletes the assignment or the condition. Make it handle discards in the same fashion. Spotted happening in the wild in Tropico 5 shaders. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* glsl: Handle conditional discards in lower_discard_flow().Kenneth Graunke2015-02-241-1/+8
| | | | | | | | | | | | | This pass wasn't prepared to handle conditional discards. Instead of initializing the "discarded" temporary to "true", set it to the condition. Then, refer to the variable for the condition, to avoid duplicating the expression tree. 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]>
* glsl: Make ir_rvalue_visitor visit ir_discard::condition.Kenneth Graunke2015-02-242-0/+22
| | | | | | | | | | | | | This was forgotten. I omitted the NULL check since we don't check ir_assignment::condition either. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* glsl: Make ir_validate check the type of ir_discard::condition.Kenneth Graunke2015-02-241-0/+15
| | | | | | | | | | Copy and pasted from the ir_if::condition handling, plus a NULL check. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* nir/register: Add a parent_instr fieldJason Ekstrand2015-02-243-1/+18
| | | | | | | | | | | | | This adds a parent_instr field similar to the one for ssa_def. The difference here is that the parent_instr field on a nir_register can be NULL if the register does not have a unique definition or if that definition does not dominate all its uses. We set this field in the out-of-SSA pass so that backends can get SSA-like information even after they have gone out of SSA. Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* nir/gcm: Add some missing break statementsJason Ekstrand2015-02-231-0/+4
| | | | Reviewed-by: Connor Abbott <[email protected]>
* nir: Copy-propagate vecN operations that are actually movesJason Ekstrand2015-02-231-16/+29
| | | | | | | | | | | | | | | | | | | We were already do this for ALU operations but we haven't for non-ALU operations. This changes that. total NIR instructions in shared programs: 2039883 -> 2022338 (-0.86%) NIR instructions in affected programs: 1768850 -> 1751305 (-0.99%) helped: 14244 HURT: 124 total FS instructions in shared programs: 4083960 -> 4084036 (0.00%) FS instructions in affected programs: 7302 -> 7378 (1.04%) helped: 12 HURT: 51 Signed-off-by: Jason Ekstrand <[email protected]> Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* nir: Generalize the optimization of subs of subs from 0.Eric Anholt2015-02-211-2/+2
| | | | | | | | | | | | I initially wrote this based on the "(('fneg', ('fneg', a)), a)" above, but we can generalize it and make it more potentially useful. In the specific original case of a 0 for our new 'a' argument, it'll get further algebraic optimization once the 0 is an argument to the new add. No shader-db effects. Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* nir: Collapse repeated bcsels on the same argument.Eric Anholt2015-02-211-0/+1
| | | | | | | | | vc4 results: total instructions in shared programs: 39881 -> 39794 (-0.22%) instructions in affected programs: 6302 -> 6215 (-1.38%) Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* nir: When faced with a csel on !condition, just flip the arguments.Eric Anholt2015-02-211-0/+1
| | | | | | | | total NIR instructions in shared programs: 39426 -> 39411 (-0.04%) NIR instructions in affected programs: 3748 -> 3733 (-0.40%) Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* nir: Allow nir_opt_algebraic to see booleanness through &&, ||, ^, !.Eric Anholt2015-02-211-1/+29
| | | | | | | | | | | | | | | | | We have some useful optimizations to drop things like 'ine a, 0' on a boolean argument, but if 'a' came from logical operations on bools, it couldn't tell. These kinds of constructs appear as a result of TGSI->NIR quite frequently (at least with if flattening), so being a little more aggressive in detecting booleans can pay off. v2: Add ixor as a booleanness-preserving op (Suggestion by Connor). vc4 results: total instructions in shared programs: 40207 -> 39881 (-0.81%) instructions in affected programs: 6677 -> 6351 (-4.88%) Reviewed-by: Matt Turner <[email protected]> (v1) Reviewed-by: Connor Abbott <[email protected]>
* nir: Add a couple of simplifications of csel operations.Eric Anholt2015-02-211-0/+3
| | | | | | | | vc4 was already cleaning these up, but it does shave 4 NIR instructions in shader-db. Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* glsl: ensure that enter/leave record get a record typeIlia Mirkin2015-02-212-0/+5
| | | | | | | May make life easier for tools like Coverity. Signed-off-by: Ilia Mirkin <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* nir: Fix the Mesa build without -DDEBUG.Kenneth Graunke2015-02-201-2/+2
| | | | | | | | | | | | | With -DDEBUG -UNDEBUG, this assert uses reg_state::stack_size, which doesn't exist, breaking the build: assert(state->states[index].index < state->states[index].stack_size); Switch it to ifndef NDEBUG, so the field will exist if the assertion actually generates code. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* nir: Drop dependency on mtypes.h for core NIR.Eric Anholt2015-02-203-1/+5
| | | | | | | | One less new directory necessary for gallium code that wants to interact with NIR. Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Jose Fonseca <[email protected]>
* glsl: Only include mtypes from glsl_types.h for the C++ code that needs it.Eric Anholt2015-02-201-1/+1
| | | | | | It's used in one of the methods, not in the structure definitions. Reviewed-by: Jose Fonseca <[email protected]>
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