Using -Oline -j 56 W=1 redirect to /tmp/tmp.A7HkBG9DKf and /tmp/tmp.hpHdy4ExTw
LLVM=1 cc=clang
Ubuntu clang version 18.1.3 (1ubuntu1)
Tree base:
3640dbc1f75c ("wifi: iwlwifi: Fix A-MSDU TSO preparation")
Baseline building the tree
make[1]: Entering directory '/home/upstream/wireless/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/upstream/wireless/wt-0/build_clang'
  SYNC    include/config/auto.conf.cmd
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/upstream/wireless/wt-0/build_clang/tools/objtool && make O=/home/upstream/wireless/wt-0/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  net/mac80211/parse.o
  CC [M]  net/mac80211/mlme.o
  CHK     kernel/kheaders_data.tar.xz
  LD [M]  net/mac80211/mac80211.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1)
  CC [M]  net/mac80211/mac80211.mod.o
  LD [M]  net/mac80211/mac80211.ko
Building the tree before the patch
make[1]: Entering directory '/home/upstream/wireless/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/upstream/wireless/wt-0/build_clang'
  SYNC    include/config/auto.conf.cmd
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/upstream/wireless/wt-0/build_clang/tools/objtool && make O=/home/upstream/wireless/wt-0/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  net/mac80211/parse.o
  CC [M]  net/mac80211/mlme.o
  CHK     kernel/kheaders_data.tar.xz
  LD [M]  net/mac80211/mac80211.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1)
  CC [M]  net/mac80211/mac80211.mod.o
  LD [M]  net/mac80211/mac80211.ko
Building the tree with the patch
make[1]: Entering directory '/home/upstream/wireless/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/upstream/wireless/wt-0/build_clang'
  SYNC    include/config/auto.conf.cmd
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/upstream/wireless/wt-0/build_clang/tools/objtool && make O=/home/upstream/wireless/wt-0/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/mac80211/parse.o
  CC [M]  net/mac80211/mlme.o
  LD [M]  net/mac80211/mac80211.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1)
  CC [M]  net/mac80211/mac80211.mod.o
  LD [M]  net/mac80211/mac80211.ko