[Bug 257132] clang 12.0.1 fails to cross-compile kern_mbuf - amd64 host, i386 target

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 14 Jul 2021 15:03:50 +0000
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=257132

--- Comment #4 from imbutler <imb_at_protected-networks.net> ---
It's not only cross-compilation that fails. In an i386 VM and building the
GENERIC kernel with a pentium3 target, I get a similar failure ..

--- subr_prng.o ---
Assertion failed: ((EltVT.getSizeInBits() >= 64 || (uint64_t)((int64_t)Val >>
EltVT.getSizeInBits()) + 1 < 2) && "getConstant with a uint64_t value that
doesn't fit in the type!"), function getConstant, file
/usr/src/contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp,
line 1337.
PLEASE submit a bug report to https://bugs.freebsd.org/submit/ and include the
crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.      Program arguments: cc -target i386-unknown-freebsd14.0
--sysroot=/usr/obj/usr/src/i386.i386/tmp
-B/usr/obj/usr/src/i386.i386/tmp/usr/bin -c -O2 -pipe -fno-strict-aliasing
-march=pentium3 -g -nostdinc -I. -I/usr/src/sys
-I/usr/src/sys/contrib/ck/include -I/usr/src/sys/contrib/libfdt -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-common -MD
-MF.depend.subr_prng.o -MTsubr_prng.o
-fdebug-prefix-map=./machine=/usr/src/sys/i386/include
-fdebug-prefix-map=./x86=/usr/src/sys/x86/include -mno-mmx -mno-sse
-msoft-float -ffreestanding -fwrapv -fstack-protector -Wall -Wredundant-decls
-Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith
-Wcast-qual -Wundef -Wno-pointer-sign -D__printf__=__freebsd_kprintf__
-Wmissing-include-dirs -fdiagnostics-show-option -Wno-unknown-pragmas
-Wno-error=tautological-compare -Wno-error=empty-body
-Wno-error=parentheses-equality -Wno-error=unused-function
-Wno-error=pointer-sign -Wno-error=shift-negative-value
-Wno-address-of-packed-member -Wno-format-zero-length -mno-aes -mno-avx
-std=iso9899:1999 -Werror /usr/src/sys/kern/subr_prng.c
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module
'/usr/src/sys/kern/subr_prng.c'.
4.      Running pass 'X86 DAG->DAG Instruction Selection' on function '_at_prng32'
#0 0x030f49c4 (/usr/bin/cc+0x30f49c4)
#1 0x030f4e30 (/usr/bin/cc+0x30f4e30)
#2 0x030f2a8e (/usr/bin/cc+0x30f2a8e)
#3 0x03090424 (/usr/bin/cc+0x3090424)
#4 0x030905c4 (/usr/bin/cc+0x30905c4)
#5 0x24073399 (/lib/libthr.so.3+0x18399)
cc: error: clang frontend command failed with exit code 134 (use -v to see
invocation)
FreeBSD clang version 12.0.1 (git_at_github.com:llvm/llvm-project.git
llvmorg-12.0.1-rc2-0-ge7dac564cd0e)
Target: i386-unknown-freebsd14.0
Thread model: posix
InstalledDir: /usr/bin
cc: note: diagnostic msg: 
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Received on Wed Jul 14 2021 - 15:03:50 UTC

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