ralloc_adopt() reparents all children from one context to another.
Conceptually, ralloc_adopt(new_ctx, old_ctx) behaves like this
pseudocode:
foreach child of old_ctx:
ralloc_steal(new_ctx, child)
However, ralloc provides no way to iterate over a memory context's
children, and ralloc_adopt does this task more efficiently anyway.
One potential use of this is to implement a memory-sweeper pass: first,
steal all of a context's memory to a temporary context. Then, walk over
anything that should be kept, and ralloc_steal it back to the original
context. Finally, free the temporary context. This works when the
context is something that can't be freed (i.e. an important structure).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
These are due how we implemented the atomic tests, not the atomic
implementation itself. It's also difficult to refactor the code to
avoid the warnings due to the use of macros -- the code would be quite
hairy.
Reviewed-by: Brian Paul <brianp@vmware.com>
The SSE 4.1 ROUND instructions let us implement roundeven directly.
Otherwise we assume that the rounding mode has not been modified (as we
do in the rest of Mesa) and use rint().
glibc uses the ROUND instruction in rint() after a cpuid check. This
patch just lets us inline it directly when we're already building for
SSE 4.1.
Reviewed-by: Carl Worth <cworth@cworth.org>
Eric's initial patch adding constant expression evaluation for
ir_unop_round_even used nearbyint. The open-coded _mesa_round_to_even
implementation came about without much explanation after a reviewer
asked whether nearbyint depended on the application not modifying the
rounding mode. Of course (as Eric commented) we rely on the application
not changing the rounding mode from its default (round-to-nearest) in
many other places, including the IROUND function used by
_mesa_round_to_even!
Worse, IROUND() is implemented using the trunc(x + 0.5) trick which
fails for x = nextafterf(0.5, 0.0).
Still worse, _mesa_round_to_even unexpectedly returns an int. I suspect
that could cause problems when rounding large integral values not
representable as an int in ir_constant_expression.cpp's
ir_unop_round_even evaluation. Its use of _mesa_round_to_even is clearly
broken for doubles (as noted during review).
The constant expression evaluation code for the packing built-in
functions also mistakenly assumed that _mesa_round_to_even returned a
float, as can be seen by the cast through a signed integer type to an
unsigned (since negative float -> unsigned conversions are undefined).
rint() and nearbyint() implement the round-half-to-even behavior we want
when the rounding mode is set to the default round-to-nearest. The only
difference between them is that nearbyint() raises the inexact
exception.
This patch implements _mesa_roundeven{f,}, a function similar to the
roundeven function added by a yet unimplemented technical specification
(ISO/IEC TS 18661-1:2014), with a small difference in behavior -- we
don't bother raising the inexact exception, which I don't think we care
about anyway.
At least recent Intel CPUs can quickly change a subset of the bits in
the x87 floating-point control register, but the exception mask bits are
not included. rint() does not need to change these bits, but nearbyint()
does (twice: save old, set new, and restore old) in order to raise the
inexact exception, which would incur some penalty.
Reviewed-by: Carl Worth <cworth@cworth.org>
Suggested-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Replace the _MSC_VER >= 1200 with defined (_MSC_VER) and compact if/else
statements. We require MSVC 2008 or later with commit 46110c5d564.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This is just to help repro and fixing these issues with any C++ compiler --
Commiting this will of course wait until all issues are addressed.
$ scons src/glsl/
scons: Reading SConscript files ...
Checking for GCC ... yes
Checking for Clang ... no
Checking for X11 (x11 xext xdamage xfixes glproto >= 1.4.13)... yes
Checking for XCB (x11-xcb xcb-glx >= 1.8.1 xcb-dri2 >= 1.8)... yes
Checking for XF86VIDMODE (xxf86vm)... yes
Checking for DRM (libdrm >= 2.4.38)... yes
Checking for UDEV (libudev >= 151)... yes
warning: LLVM disabled: not building llvmpipe
scons: done reading SConscript files.
scons: Building targets ...
scons: building associated VariantDir targets: build/linux-x86_64-debug/glsl
Compiling src/glsl/ast_array_index.cpp ...
Compiling src/glsl/ast_expr.cpp ...
Compiling src/glsl/ast_function.cpp ...
Compiling src/glsl/ast_to_hir.cpp ...
Compiling src/glsl/ast_type.cpp ...
Compiling src/glsl/builtin_functions.cpp ...
In file included from include/c99_compat.h:28:0,
from src/mapi/u_compiler.h:4,
from src/mapi/u_thread.h:47,
from src/mapi/glapi/glapi.h:47,
from src/mesa/main/mtypes.h:42,
from src/mesa/main/errors.h:47,
from src/mesa/main/imports.h:41,
from src/mesa/main/core.h:44,
from src/glsl/builtin_functions.cpp:58:
include/no_extern_c.h:48:1: error: template with C linkage
template<class T> class _IncludeInsideExternCNotPortable;
^
In file included from include/c99_compat.h:28:0,
from include/c11/threads.h:38,
from src/mapi/u_thread.h:49,
from src/mapi/glapi/glapi.h:47,
from src/mesa/main/mtypes.h:42,
from src/mesa/main/errors.h:47,
from src/mesa/main/imports.h:41,
from src/mesa/main/core.h:44,
from src/glsl/builtin_functions.cpp:58:
include/no_extern_c.h:48:1: error: template with C linkage
template<class T> class _IncludeInsideExternCNotPortable;
^
Compiling src/glsl/builtin_types.cpp ...
Compiling src/glsl/builtin_variables.cpp ...
scons: *** [build/linux-x86_64-debug/glsl/builtin_functions.os] Error 1
scons: building terminated because of errors.
Reviewed-by: Mark Janes <mark.a.janes@intel.com>
System headers may contain C++ declarations, which cannot be given C
linkage. For this reason, include statements should never occur
inside extern "C".
This patch moves the C linkage statements to enclose only the
declarations within a single header.
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Define the macro in src/util/macros.h rather than in two different
places. Note that USED isn't actually used anywhere at this time.
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
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 <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This reverts commit 79daa510c7.
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.
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 <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The round-robin allocation strategy is expected to decrease the amount
of false dependencies created by the register allocator and give the
post-RA scheduling pass more freedom to move instructions around. On
the other hand it has the disadvantage of increasing fragmentation and
decreasing the number of equally-colored nearby nodes, what increases
the likelihood of failure in presence of optimistically colorable
nodes.
This patch disables the round-robin strategy for optimistically
colorable nodes. These typically arise in situations of high register
pressure or for registers with large live intervals, in both cases the
task of the instruction scheduler shouldn't be constrained excessively
by the dense packing of those nodes, and a spill (or on Intel hardware
a fall-back to SIMD8 mode) is invariably worse than a slightly less
optimal scheduling.
Shader-db results on the i965 driver:
total instructions in shared programs: 5488539 -> 5488489 (-0.00%)
instructions in affected programs: 1121 -> 1071 (-4.46%)
helped: 1
HURT: 0
GAINED: 49
LOST: 5
v2: Re-enable round-robin already for the lowest one of the nodes
pushed optimistically onto the sack (Connor).
v3: Use UINT_MAX instead of ~0, open-code MIN2 (Jason, Connor).
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
While the C compiler accepts typeof, C++ requires __typeof.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86944
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Cc: "10.5" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
delete_management.c:56:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i = 0; i < size; i++) {
^
delete_management.c:69:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i = size - 100; i < size; i++) {
^
delete_management.c:79:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
assert(key_value(entry->key) >= size - 100 &&
^
delete_management.c:79:70: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
assert(key_value(entry->key) >= size - 100 &&
^
insert_many.c:56:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i = 0; i < size; i++) {
^
insert_many.c:62:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i = 0; i < size; i++) {
^
insert_many.c:67:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
assert(ht->entries == size);
^
random_entry.c:62:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i = 0; i < size; i++) {
^
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Add another class of tests.
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=89112
I failed to spot this in my previous change, because bool was a typedef
for char on the system I tested.
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
We need to build certain parts of Mesa (namely gallium, llvmpipe, and
therefore util) with Windows SDK 7.0.7600, which includes MSVC 2008.
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This provides for atomic addition, which will be used by an upcoming
shader-cache patch. A simple test is added to "make check" as well.
Note: The various O/S functions differ on whether they return the
original value or the value after the addition, so I did not provide
an add_return() macro which would be sensitive to that difference.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: José Fonseca <jfonseca@vmware.com>
Previously, the set_insert function would bail early if it found a deleted
slot that it could re-use. However, this is a problem if the key being
inserted is already in the set but further down the list. If this happens,
the element ends up getting inserted in the set twice. This commit makes
it so that we walk over all of the possible entries for the given key and
then, if we don't find the key, place it in the available free entry we
found.
Reviewed-by: Eric Anholt <eric@anholt.net>
Previously, the hash_table_insert function would bail early if it found a
deleted slot that it could re-use. However, this is a problem if the key
being inserted is already in the hash table but further down the list. If
this happens, the element ends up getting inserted in the hash table twice.
This commit makes it so that we walk over all of the possible entries for
the given key and then, if we don't find the key, place it in the available
free entry we found.
Reviewed-by: Eric Anholt <eric@anholt.net>
The intrinsics are universally available, whereas older Windows SDKs (e.g.
7.0.7600) don't have the non-intrisic entrypoint.
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
The idea is that after a remove_from_list(), you might want to be able to
do a remove_from_list() on it again or an is_empty_list(). This is
apparently relied on by r300g.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This reverts commits d6eb572905 and
58e8468d11.
This is no longer necessary as we aren't using it in NIR anymore. Also, it
broke the build on some strange systems so let's put it back in querymatrix
where it came from.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88852
Acked-by: Matt Turner <mattst88@gmail.com>
The problem is that the fallbacks we have at the moment don't work in C++.
While we could theoretically fix the fallbacks it would also raise the
issue of correctly detecting the fpclassify function. So, for now, we'll
just disable it until we actually have a C++ user.
Reported-by: Tom Stellard <thomas.stellard@amd.com>
Tested-by: Tom Stellard <thomas.stellard@amd.com>
Tested-by: EdB <edb+mesa@sigluy.net>
v2: s/unsigned int/unsigned/ in prog_optimize.c
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
The filename of sha1.h was conflicting with the system-provided
sha1.h, (and in some confiurations, our sha1.c was unsuccessfully
attemping to include "sha1.h" and <sha1.h> as two different files).
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88523
Fix build error.
CC libmesautil_la-sha1.lo
sha1.c: In function '_mesa_sha1_final':
sha1.c:210:22: error: 'grcy_md_hd_t' undeclared (first use in this function)
gcry_md_hd_t h = (grcy_md_hd_t) ctx;
^
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88519
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
We don't actually have the code for the shader cache just yet, but
this configure machinery puts everything in place so that the shader
cache can be optionally compiled in.
Specifically, if the user passes no option (neither
--disable-shader-cache, nor --enable-shader-cache), then this feature
will be automatically detected based on the presence of a usable SHA-1
library. If no suitable library can be found, then the shader cache
will be automatically disabled, (and reported in the final output from
configure).
The user can force the shader-cache feature to not be compiled, (even
if a SHA-1 library is detected), by passing
--disable-shader-cache. This will prevent the compiled Mesa libraries
from depending on any library for SHA-1 implementation.
Finally, the user can also force the shader cache on with
--enable-shader-cache. This will cause configure to trigger a fatal
error if no sutiable SHA-1 implementation can be found for the
shader-cache feature.
Bug fix by José Fonseca <jfonseca@vmware.com>: Fix to put conditional
assignment in Makefile.am, not Makefile.sources to avoid breaking
scons build.
Note: As recommended by José, with this commit the scons build will
not compile any of the SHA-1-using code. This is waiting for someone
to write SConstruct detection of the available SHA-1 libraries, (and
set the appropriate HAVE_SHA1_* variables).
Reviewed-by: Matt Turner <mattst88@gmail.com>
The upcoming shader cache uses the SHA-1 algorithm for cryptographic
naming. These new mesa_sha1 functions are implemented with any one of
several differeny cryptographics libraries.
This code was copied from the xserver repository, (where it has
apparently been functioning well on a variety of operating systems),
and comes licensed with a license identical to that of Mesa.
Bug fixes by José Fonseca <jfonseca@vmware.com>: Fix to put
conditional assignment in Makefile.am, not Makefile.sources to avoid
breaking scons build. Fix include file for CryptoAPI section. Fix
missing cast in openssl section.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Previously, if __builtin_unreachable() was unavailable, the
unreachable macro was defined to do nothing. We do better here, by at
least still making it an assert.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Previously, the set API required the user to do all of the hashing of keys
as it passed them in. Since the hashing function is intrinsically tied to
the comparison function, it makes sense for the hash set to know about
it. Also, it makes for a somewhat clumsy API as the user is constantly
calling hashing functions many of which have long names. This is
especially bad when the standard call looks something like
_mesa_set_add(ht, _mesa_pointer_hash(key), key);
In the above case, there is no reason why the hash set shouldn't do the
hashing for you. We leave the option for you to do your own hashing if
it's more efficient, but it's no longer needed. Also, if you do do your
own hashing, the hash set will assert that your hash matches what it
expects out of the hashing function. This should make it harder to mess up
your hashing.
This is analygous to 94303a0750 where we did this for hash_table
Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
We already have search_pre_hashed. This makes the APIs match better.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
