[Bug 243227] net/norm: fix build on powerpc64 elfv2

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243227

            Bug ID: 243227
           Summary: net/norm: fix build on powerpc64 elfv2
           Product: Ports & Packages
           Version: Latest
          Hardware: powerpc
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected], [email protected]
                CC: [email protected], [email protected]
             Flags: maintainer-feedback?([email protected])

Created attachment 210572
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=210572&action=edit
patch

On ELFv2 ABI Clang can't build this port by default and throws assertion
(already reported):
Assertion failed: ((Op.getOpcode() == ISD::FP_TO_SINT || Subtarget.hasFPCVT())
&& "i64 FP_TO_UINT is supported only with FPCVT"), function
LowerFP_TO_INTForReuse, file
/poudriere/jails/powerpc64-elfv2-pkubaj/usr/src/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp,
line 7281.
Stack dump:
0.      Program arguments: /usr/bin/c++ -cc1 -triple
powerpc64-unknown-freebsd13.0 -emit-obj -disable-free -main-file-name
protoDispatcher.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix
-relaxed-aliasing -masm-verbose -mconstructor-aliases -munwind-tables
-fuse-init-array -target-cpu ppc64 -target-feature +secure-plt -mfloat-abi hard
-dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer
-coverage-notes-file
/wrkdirs/usr/ports/net/norm/work/norm-1.5r6/build/protolib/src/common/protoDispatcher.cpp.1.gcno
-resource-dir /usr/lib/clang/9.0.1 -I
/wrkdirs/usr/ports/net/norm/work/norm-1.5r6/build/protolib/include -I
/wrkdirs/usr/ports/net/norm/work/norm-1.5r6/protolib/include -I
/wrkdirs/usr/ports/net/norm/work/norm-1.5r6/build/protolib/include/unix -I
/wrkdirs/usr/ports/net/norm/work/norm-1.5r6/protolib/include/unix -D UNIX -D
HAVE_DIRFD -D HAVE_IPV6 -D HAVE_ASSERT -D HAVE_GETLOGIN -D HAVE_FLOCK -D NDEBUG
-internal-isystem /usr/include/c++/v1 -O3 -fdeprecated-macro
-fdebug-compilation-dir /wrkdirs/usr/ports/net/norm/work/norm-1.5r6/build
-ferror-limit 19 -fmessage-length 0 -stack-protector 2 -fno-signed-char
-fobjc-runtime=gnustep -fcxx-exceptions -fexceptions -fdiagnostics-show-option
-vectorize-loops -vectorize-slp -faddrsig -o
/wrkdirs/usr/ports/net/norm/work/norm-1.5r6/build/protolib/src/common/protoDispatcher.cpp.1.o
-x c++ ../protolib/src/common/protoDispatcher.cpp 
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module
'../protolib/src/common/protoDispatcher.cpp'.
4.      Running pass 'PowerPC DAG->DAG Pattern Instruction Selection' on
function '@_ZN15ProtoDispatcher4WaitEv'
#0 0x000000001371df18 (/usr/bin/c+++0x1371df18)
#1 0x000000001371e594 (/usr/bin/c+++0x1371e594)
#2 0x000000001371b858 (/usr/bin/c+++0x1371b858)
#3 0x000000001371ed0c (/usr/bin/c+++0x1371ed0c)
#4 0x000000081520176c (/lib/libthr.so.3+0x1b76c)
c++: error: unable to execute command: Abort trap (core dumped)
c++: error: clang frontend command failed due to signal (use -v to see
invocation)
FreeBSD clang version 9.0.1 ([email protected]:llvm/llvm-project.git
c1a0a213378a458fbea1a5c77b315c7dce08fd05) (based on LLVM 9.0.1)
Target: powerpc64-unknown-freebsd13.0
Thread model: posix
InstalledDir: /usr/bin
c++: note: diagnostic msg: PLEASE submit a bug report to
https://bugs.freebsd.org/submit/ and include the crash backtrace, preprocessed
source, and associated run script.
c++: note: diagnostic msg: 

The workaround is to optimize for POWER7, which supports necessary features in
hardware.

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