Using -Oline -j 72 W=1 redirect to /tmp/tmp.bZtkFDN2F5 and /tmp/tmp.Km18Y3p7Nf
LLVM=1 cc=clang
clang version 18.1.1 (Fedora 18.1.1-1.fc40)
Tree base:
86474deeb5c3 ("Merge branch 'dt-bindings-net-convert-fsl-fman-related-file-to-yaml-format'")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-0/build_clang/tools/objtool && make O=/home/nipa/net-next/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/intel/igc/igc_nvm.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_i225.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_phy.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_mac.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_base.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_diag.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_dump.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_leds.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_xdp.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_tsn.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_ptp.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_ethtool.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_main.o
  LD [M]  drivers/net/ethernet/intel/igc/igc.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2984)
  CC [M]  drivers/net/ethernet/intel/igc/igc.mod.o
  LD [M]  drivers/net/ethernet/intel/igc/igc.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-0/build_clang/tools/objtool && make O=/home/nipa/net-next/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/intel/igc/igc_i225.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_nvm.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_mac.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_base.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_phy.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_dump.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_diag.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_leds.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_tsn.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_xdp.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_ptp.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_ethtool.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_main.o
  LD [M]  drivers/net/ethernet/intel/igc/igc.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2984)
  CC [M]  drivers/net/ethernet/intel/igc/igc.mod.o
  LD [M]  drivers/net/ethernet/intel/igc/igc.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-0/build_clang/tools/objtool && make O=/home/nipa/net-next/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/intel/igc/igc_i225.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_nvm.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_diag.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_mac.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_phy.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_leds.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_base.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_dump.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_xdp.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_tsn.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_ptp.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_ethtool.o
  CC [M]  drivers/net/ethernet/intel/igc/igc_main.o
  LD [M]  drivers/net/ethernet/intel/igc/igc.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2984)
  CC [M]  drivers/net/ethernet/intel/igc/igc.mod.o
  LD [M]  drivers/net/ethernet/intel/igc/igc.ko