[dpdk-dev] [Bug 740] event/cnxk/cnxk_tim_worker build failures on Ubuntu 20.04 cross-compile with clang 10

[dpdk-dev] [Bug 740] event/cnxk/cnxk_tim_worker build failures on Ubuntu 20.04 cross-compile with clang 10

[bugzilla]

https://bugs.dpdk.org/show_bug.cgi?id=740

            Bug ID: 740
           Summary: event/cnxk/cnxk_tim_worker build failures on Ubuntu
                    20.04 cross-compile with clang 10
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: blo@iol.unh.edu
  Target Milestone: ---

Cross-compiling DPDK on Ubuntu 20.04 with clang 10.0.0-4ubuntu1 on latest main
(46c451d905e8e27787a0471ecc1d31a4cde25a9e)  

$ CC_FOR_BUILD=clang meson build --werror --cross-file
config/arm/arm64_armv8_linux_clang_ubuntu1804 -Dexamples=all --default-library
shared  

The Meson build system
Version: 0.58.0

Found ninja-1.10.0 at /usr/bin/ninja

[1901/2540] Compiling C object
drivers/libtmp_rte_event_cnxk.a.p/event_cnxk_cnxk_tim_worker.c.o  
FAILED: drivers/libtmp_rte_event_cnxk.a.p/event_cnxk_cnxk_tim_worker.c.o 
clang -Idrivers/libtmp_rte_event_cnxk.a.p -Idrivers -I../drivers
-Idrivers/event/cnxk -I../drivers/event/cnxk -Ilib/eventdev -I../lib/eventdev
-I. -I.. -Iconfig -I../config -Ilib/eal/include -I../lib/eal/include
-Ilib/eal/linux/include -I../lib/eal/linux/include -Ilib/eal/arm/include
-I../lib/eal/arm/include -Ilib/eal/common -I../lib/eal/common -Ilib/eal
-I../lib/eal -Ilib/kvargs -I../lib/kvargs -Ilib/metrics -I../lib/metrics
-Ilib/telemetry -I../lib/telemetry -Ilib/ring -I../lib/ring -Ilib/ethdev
-I../lib/ethdev -Ilib/net -I../lib/net -Ilib/mbuf -I../lib/mbuf -Ilib/mempool
-I../lib/mempool -Ilib/meter -I../lib/meter -Ilib/hash -I../lib/hash -Ilib/rcu
-I../lib/rcu -Ilib/timer -I../lib/timer -Ilib/cryptodev -I../lib/cryptodev
-Idrivers/bus/pci -I../drivers/bus/pci -I../drivers/bus/pci/linux -Ilib/pci
-I../lib/pci -Idrivers/common/cnxk -I../drivers/common/cnxk -fcolor-diagnostics
-D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Werror -O3 -include rte_config.h
-Wextra -Wcast-qual -Wdeprecated -Wformat -Wformat-nonliteral -Wformat-security
-Wmissing-declarations -Wmissing-prototypes -Wnested-externs
-Wold-style-definition -Wpointer-arith -Wsign-compare -Wstrict-prototypes
-Wundef -Wwrite-strings -Wno-address-of-packed-member
-Wno-missing-field-initializers -D_GNU_SOURCE -target aarch64-linux-gnu
--sysroot /usr/aarch64-linux-gnu -fPIC -march=armv8-a+crc
-DALLOW_EXPERIMENTAL_API -DALLOW_INTERNAL_API
-DRTE_LOG_DEFAULT_LOGTYPE=pmd.event.cnxk -MD -MQ
drivers/libtmp_rte_event_cnxk.a.p/event_cnxk_cnxk_tim_worker.c.o -MF
drivers/libtmp_rte_event_cnxk.a.p/event_cnxk_cnxk_tim_worker.c.o.d -o
drivers/libtmp_rte_event_cnxk.a.p/event_cnxk_cnxk_tim_worker.c.o -c
../drivers/event/cnxk/cnxk_tim_worker.c
In file included from ../drivers/event/cnxk/cnxk_tim_worker.c:6:
../drivers/event/cnxk/cnxk_tim_worker.h:372:23: error: value size does not
match register size specified by the constraint and modifier
[-Werror,-Wasm-operand-widths]
                             : [rem] "=&r"(rem)
                                           ^
../drivers/event/cnxk/cnxk_tim_worker.h:365:17: note: use constraint modifier
"w"
                             "          ldxr %[rem], [%[crem]]  \n"
                                             ^~~~~~
                                             %w[rem]
../drivers/event/cnxk/cnxk_tim_worker.h:372:23: error: value size does not
match register size specified by the constraint and modifier
[-Werror,-Wasm-operand-widths]
                             : [rem] "=&r"(rem)
                                           ^
../drivers/event/cnxk/cnxk_tim_worker.h:366:16: note: use constraint modifier
"w"
                             "          tbz %[rem], 63, dne%=           \n"
                                            ^~~~~~
                                            %w[rem]
../drivers/event/cnxk/cnxk_tim_worker.h:372:23: error: value size does not
match register size specified by the constraint and modifier
[-Werror,-Wasm-operand-widths]
                             : [rem] "=&r"(rem)
                                           ^
../drivers/event/cnxk/cnxk_tim_worker.h:369:17: note: use constraint modifier
"w"
                             "          ldxr %[rem], [%[crem]]  \n"
                                             ^~~~~~
                                             %w[rem]
../drivers/event/cnxk/cnxk_tim_worker.h:372:23: error: value size does not
match register size specified by the constraint and modifier
[-Werror,-Wasm-operand-widths]
                             : [rem] "=&r"(rem)
                                           ^
../drivers/event/cnxk/cnxk_tim_worker.h:370:17: note: use constraint modifier
"w"
                             "          tbnz %[rem], 63, rty%=          \n"
                                             ^~~~~~
                                             %w[rem]
4 errors generated.
[1918/2540] Compiling C object
drivers/libtmp_rte_event_octeontx2.a.p/event_octeontx2_otx2_worker.c.o

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