This had two uses, neither of them very good. On s390x we used it to
store the fact of our s390-ness, which we can replace with
DETECT_ARCH_S390. On x64 we used it to communicate AMD-Zen-ness to the
L3 topology detection code, which we can replace with a local parameter.
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34820>
When use LA464(3A5000 pc), LLVM18 and kernel(which not supports lsx/lasx),
it will get a illegal instruction error. LA464 will return LA464 and
LA664 will return a generic when calling getHostCPUName(). Return LA464
name will add all feature(+f,+d,+lsx,+lasx,lvz) by default and generate
vector instruction, generic will add null. Hence we use util_get_cpu_caps
to judge if kernel supports lsx/lasx or not.
Set lsx and lasx by util_get_cpu_caps. Only LLVM 18 on loongarch
supports lsx and lasx completely. LLVM 16 isn't supported and
LLVM 17's LSX support is incomplete.
Signed-off-by: Jiale Zhao <zhaojiale@loongson.cn>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30220>
This is achieved by the following steps:
#ifndef DEBUG => #if !MESA_DEBUG
defined(DEBUG) => MESA_DEBUG
#ifdef DEBUG => #if MESA_DEBUG
This is done by replace in vscode
excludes
docs,*.rs,addrlib,src/imgui,*.sh,src/intel/vulkan/grl/gpu
These are safe because those files should keep DEBUG macro is already excluded;
and not directly replace DEBUG, as we have some symbols around it.
Use debug or NDEBUG instead of DEBUG in comments when proper
This for reduce the usage of DEBUG,
so it's easier migrating to MESA_DEBUG
These are found when migrating DEBUG to MESA_DEBUG,
these are all comment update, so it's safe
Replace comment /* DEBUG */ and /* !DEBUG */ with proper /* MESA_DEBUG */ or /* !MESA_DEBUG */ manually
DEBUG || !NDEBUG -> MESA_DEBUG || !NDEBUG
!DEBUG && NDEBUG -> !(MESA_DEBUG || !NDEBUG)
Replace the DEBUG present in comment with proper new MESA_DEBUG manually
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Acked-by: David Heidelberg <david.heidelberg@collabora.com>
Reviewed-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28092>
As a side effect solve:
```
[91/1401] Compiling C object src/util/libmesa_util.a.p/u_cpu_detect.c.o
../src/util/u_cpu_detect.c: In function '_util_cpu_detect_once':
../src/util/u_cpu_detect.c:889:11: warning: 'regs2[2]' may be used uninitialized [-Wmaybe-uninitialized]
889 | if (((regs2[2] >> 27) & 1) && // OSXSAVE
| ^~~~~~~~~~~~~~~~~~~~~~
../src/util/u_cpu_detect.c:823:16: note: 'regs2[2]' was declared here
823 | uint32_t regs2[4];
| ^~~~~
```
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Signed-off-by: David Heidelberg <david.heidelberg@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23164>
Even though the defines in p_config.h are stared with PIPE_, they are indeed
are generic detecting mechanics, we will rename them to DETECT_* in latter MR
We rename src/gallium/include/pipe/p_config.h src/util/detect_arch.h because
the detect code in src/gallium/include/pipe/p_config.h are most about
processor architecture detecting.
The file util/detect.h is added to replace functional of src/gallium/include/pipe/p_config.h
So we replace of #include "pipe/p_config.h" with #include "util/detect.h"
The file util/detect_cc.h is added as a placeholder for moving compiler related macro defines
from p_config.h into it in following commits
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19674>
Due to how alignas is defined, it itsn't allowed to use it on a struct,
it needs to be used on the first member instead. So move the declaration
in those cases.
This still leaves the ALIGN16 macro using compiler-specific directives,
because it's a lot of work to untangle the above. This probably deserves
its own MR.
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16908>
util_cpu_detect is an anti-pattern: it relies on callers high up in the call
chain initializing a local implementation detail. As a real example, I added:
...a Mali compiler unit test
...that called bi_imm_f16() to construct an FP16 immediate
...that calls _mesa_float_to_half internally
...that calls util_get_cpu_caps internally, but only on x86_64!
...that relies on util_cpu_detect having been called before.
As a consequence, this unit test:
...crashes on x86_64 with USE_X86_64_ASM set
...passes on every other architecture
...works on my local arm64 workstation and on my test board
...failed CI which runs on x86_64
...needed to have a random util_cpu_detect() call sprinkled in.
This is a bad design decision. It pollutes the tree with magic, it causes
mysterious CI failures especially for non-x86_64 developers, and it is not
justified by a micro-optimization.
Instead, let's call util_cpu_detect directly from util_get_cpu_caps, avoiding
the footgun where it fails to be called. This cleans up Mesa's design,
simplifies the tree, and avoids a class of a (possibly platform-specific)
failures. To mitigate the added overhead, wrap it all in a (fast) atomic
load check and declare the whole thing as ATTRIBUTE_CONST so the
compiler will CSE calls to util_cpu_detect.
Co-authored-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15580>
Correct type for sysctl argument to fix the build.
../src/util/u_cpu_detect.c:631:29: error: incompatible pointer types passing 'int *' to parameter of type 'size_t *' (aka 'unsigned long *') [-Werror,-Wincompatible-pointer-types]
sysctl(mib, 2, &ncpu, &len, NULL, 0);
^~~~
Fixes: 5623c75e40 ("util: Fix setting nr_cpus on some BSD variants")
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13448>
ls3a4000 and ls2k1000 cpu is mips64r5 compatible with MSA SIMD
instruction set implemented, while ls3a3000 is mips64r2 compatible only.
Due to lacking llvm support for loongson CPU, llvm::sys::getHostCPUName().
return "generic" on all loongson mips CPU.
So we override the MCPU to mips64r5 if MSA is implemented, feedback to
mips64r2 for all other ordinaries.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: suijingfeng <suijingfeng@loongson.cn>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11955>
This prevents problems when some CPUs are offline. In a four CPU
system, if CPUs 1 and 2 are offline, the cache topology code would
only examine CPUs 0 and 1... giving incorrect information.
The types are changed to int16_t so that the offset of num_L3_caches
does not change. This triggered a STATIC_ASSERT failure:
STATIC_ASSERT(offsetof(struct util_cpu_caps_t, num_L3_caches) == 5 * sizeof(uint32_t));
I'm assuming there's some assembly code or something that depends on
this offset, and I don't feel like messing with it.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11228>
In the current code, this prevents a very unlikely corner case. More
importantly, it should prevent the next commit from breaking the
universe.
Imagine a system with 64 CPUs configured, but first 32 CPUs are offline.
_SC_NPROCESSORS_CONF will return 32. All of the surrounding code will
interpret this as meaning CPUs 0 through 31, but all of those CPUs are
offline. Nothing good can happen then.
The problem cases require systems with more than 32 CPUs because
util_cpu_caps.num_cpu_mask_bits is always rounded up to a multiple of
32.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11228>
Adam Jackson