# git rev-parse -q --verify dc1c8034e31b14a2e5e212104ec508aec44ce1b9^{commit}
dc1c8034e31b14a2e5e212104ec508aec44ce1b9
already have revision, skipping fetch
# git checkout -q -f -B kisskb dc1c8034e31b14a2e5e212104ec508aec44ce1b9
# git clean -qxdf
# < git log -1
# commit dc1c8034e31b14a2e5e212104ec508aec44ce1b9
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Jul 28 20:24:12 2024 -0700
# 
#     minmax: simplify min()/max()/clamp() implementation
#     
#     Now that we no longer have any C constant expression contexts (ie array
#     size declarations or static initializers) that use min() or max(), we
#     can simpify the implementation by not having to worry about the result
#     staying as a C constant expression.
#     
#     So now we can unconditionally just use temporary variables of the right
#     type, and get rid of the excessive expansion that used to come from the
#     use of
#     
#        __builtin_choose_expr(__is_constexpr(...), ..
#     
#     to pick the specialized code for constant expressions.
#     
#     Another expansion simplification is to pass the temporary variables (in
#     addition to the original expression) to our __types_ok() macro.  That
#     may superficially look like it complicates the macro, but when we only
#     want the type of the expression, expanding the temporary variable names
#     is much simpler and smaller than expanding the potentially complicated
#     original expression.
#     
#     As a result, on my machine, doing a
#     
#       $ time make drivers/staging/media/atomisp/pci/isp/kernels/ynr/ynr_1.0/ia_css_ynr.host.i
#     
#     goes from
#     
#             real    0m16.621s
#             user    0m15.360s
#             sys     0m1.221s
#     
#     to
#     
#             real    0m2.532s
#             user    0m2.091s
#             sys     0m0.452s
#     
#     because the token expansion goes down dramatically.
#     
#     In particular, the longest line expansion (which was line 71 of that
#     'ia_css_ynr.host.c' file) shrinks from 23,338kB (yes, 23MB for one
#     single line) to "just" 1,444kB (now "only" 1.4MB).
#     
#     And yes, that line is still the line from hell, because it's doing
#     multiple levels of "min()/max()" expansion thanks to some of them being
#     hidden inside the uDIGIT_FITTING() macro.
#     
#     Lorenzo has a nice cleanup patch that makes that driver use inline
#     functions instead of macros for sDIGIT_FITTING() and uDIGIT_FITTING(),
#     which will fix that line once and for all, but the 16-fold reduction in
#     this case does show why we need to simplify these helpers.
#     
#     Cc: David Laight <David.Laight@aculab.com>
#     Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-ld --version
# < git log --format=%s --max-count=1 dc1c8034e31b14a2e5e212104ec508aec44ce1b9
# make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_SAMPLES=n
# < make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  help
# make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  olddefconfig
# make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  
  Generating include/generated/machtypes.h
<stdin>:1519:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/arch/sh/kernel/cpu/sh2/../../entry-common.S: Assembler messages:
/kisskb/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:85: Warning: overflow in branch to __restore_all; converted into longer instruction sequence
/kisskb/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:357: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence
/kisskb/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:360: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence
/kisskb/src/kernel/fork.c: In function '__do_sys_clone3':
/kisskb/src/kernel/fork.c:3072:2: error: #warning clone3() entry point is missing, please fix [-Werror=cpp]
 3072 | #warning clone3() entry point is missing, please fix
      |  ^~~~~~~
cc1: all warnings being treated as errors
make[4]: *** [/kisskb/src/scripts/Makefile.build:244: kernel/fork.o] Error 1
make[4]: *** Waiting for unfinished jobs....
{standard input}: Assembler messages:
{standard input}: Warning: end of file not at end of a line; newline inserted
{standard input}:1111: Error: unknown pseudo-op: `.l18'
{standard input}: Error: open CFI at the end of file; missing .cfi_endproc directive
{standard input}:1070: Error: displacement to undefined symbol .L142 overflows 8-bit field 
{standard input}:1075: Error: displacement to undefined symbol .L161 overflows 8-bit field 
{standard input}:1059: Error: pcrel too far
{standard input}:1060: Error: pcrel too far
{standard input}:1061: Error: pcrel too far
sh4-linux-gcc: internal compiler error: Segmentation fault signal terminated program cc1
Please submit a full bug report, with preprocessed source (by using -freport-bug).
See <https://gcc.gnu.org/bugs/> for instructions.
make[6]: *** [/kisskb/src/scripts/Makefile.build:244: drivers/net/pcs/pcs-xpcs.o] Error 4
make[6]: *** Waiting for unfinished jobs....
make[5]: *** [/kisskb/src/scripts/Makefile.build:485: drivers/net/pcs] Error 2
make[5]: *** Waiting for unfinished jobs....
make[3]: *** [/kisskb/src/scripts/Makefile.build:485: kernel] Error 2
make[3]: *** Waiting for unfinished jobs....
make[4]: *** [/kisskb/src/scripts/Makefile.build:485: drivers/net] Error 2
make[4]: *** Waiting for unfinished jobs....
{standard input}: Assembler messages:
{standard input}: Warning: end of file not at end of a line; newline inserted
{standard input}:1270: Error: unknown pseudo-op: `.al'
{standard input}: Error: open CFI at the end of file; missing .cfi_endproc directive
{standard input}:1254: Error: pcrel too far
{standard input}:1255: Error: pcrel too far
sh4-linux-gcc: internal compiler error: Segmentation fault signal terminated program cc1
Please submit a full bug report, with preprocessed source (by using -freport-bug).
See <https://gcc.gnu.org/bugs/> for instructions.
make[6]: *** [/kisskb/src/scripts/Makefile.build:244: drivers/hwmon/pmbus/mp2975.o] Error 4
make[6]: *** Waiting for unfinished jobs....
make[5]: *** [/kisskb/src/scripts/Makefile.build:485: drivers/hwmon/pmbus] Error 2
make[5]: *** Waiting for unfinished jobs....
make[4]: *** [/kisskb/src/scripts/Makefile.build:485: drivers/hwmon] Error 2
make[3]: *** [/kisskb/src/scripts/Makefile.build:485: drivers] Error 2
make[2]: *** [/kisskb/src/Makefile:1925: .] Error 2
make[1]: *** [/kisskb/src/Makefile:224: __sub-make] Error 2
make: *** [Makefile:224: __sub-make] Error 2
Command 'make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  ' returned non-zero exit status 2.
# rm -rf /kisskb/build/linus_allmodconfig_sh4-gcc13
# Build took: 0:05:26.026996