Using -Oline -j 96 W=1 redirect to /tmp/tmp.U6ErKhfGvu and /tmp/tmp.8iG6c9iG6W
LLVM=1 cc="ccache clang"
clang version 21.1.7 (Fedora 21.1.7-1.fc43)
Tree base:
cc8f4ad11d8b ("net: stmmac: arrange register fields after register offsets")
Skip baseline build, not the first patch and no Kconfig updates
Building the tree before the patch
make[1]: Entering directory '/srv/nipa-poller/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/srv/nipa-poller/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  drivers/net/ethernet/stmicro/stmmac/stmmac_main.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac_lib.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac100_core.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.o
  LD [M]  drivers/net/ethernet/stmicro/stmmac/stmmac.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.o
Building the tree with the patch
make[1]: Entering directory '/srv/nipa-poller/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/srv/nipa-poller/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac_lib.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac100_core.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.o
  CC [M]  drivers/net/ethernet/stmicro/stmmac/stmmac_main.o