Using -Oline -j 72 W=1 redirect to /tmp/tmp.g9fpc8oJil and /tmp/tmp.glR5payvzh
LLVM=1 cc=clang
clang version 18.1.6 (Fedora 18.1.6-3.fc40)
Tree base:
9410645520e9 ("Merge tag 'net-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_clang/tools/objtool && make O=/home/nipa/net/wt-0/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/microchip/sparx5/sparx5_packet.o
  LD [M]  drivers/net/ethernet/microchip/sparx5/sparx5-switch.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#909)
  CC [M]  drivers/net/ethernet/microchip/sparx5/sparx5-switch.mod.o
  LD [M]  drivers/net/ethernet/microchip/sparx5/sparx5-switch.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_clang/tools/objtool && make O=/home/nipa/net/wt-0/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/microchip/sparx5/sparx5_packet.o
  LD [M]  drivers/net/ethernet/microchip/sparx5/sparx5-switch.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#909)
  CC [M]  drivers/net/ethernet/microchip/sparx5/sparx5-switch.mod.o
  LD [M]  drivers/net/ethernet/microchip/sparx5/sparx5-switch.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_clang/tools/objtool && make O=/home/nipa/net/wt-0/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/microchip/sparx5/sparx5_packet.o
  LD [M]  drivers/net/ethernet/microchip/sparx5/sparx5-switch.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#909)
  CC [M]  drivers/net/ethernet/microchip/sparx5/sparx5-switch.mod.o
  LD [M]  drivers/net/ethernet/microchip/sparx5/sparx5-switch.ko