ruby_native_statistics: Missing LLVM builtin: llvm.trunc.f64 (IllegalStateException)

[deepj]

truffleruby 20.1.0-dev-5df1e3ce, like ruby 2.6.5, GraalVM CE Native [x86_64-darwin]

To reproduce:

gem install ruby_native_statistics
ruby -rruby_native_statistics -e 'p [45, -937].percentile(0)'

Error:

~/.rubies/truffleruby-dev/lib/truffle/truffle/cext_ruby.rb:39:in `percentile': Missing LLVM builtin: llvm.trunc.f64 (IllegalStateException) (RuntimeError)
	from com.oracle.truffle.llvm.runtime.nodes.intrinsics.llvm.x86.LLVMX86_MissingBuiltin.doMissing(LLVMX86_MissingBuiltin.java:50)
	from com.oracle.truffle.llvm.runtime.nodes.intrinsics.llvm.x86.LLVMX86_MissingBuiltinNodeGen.executeGeneric(LLVMX86_MissingBuiltinNodeGen.java:42)
	from com.oracle.truffle.llvm.runtime.nodes.api.LLVMExpressionNode.executeDouble(LLVMExpressionNode.java:71)
	from com.oracle.truffle.llvm.runtime.nodes.vars.LLVMWriteNodeFactory$LLVMWriteDoubleNodeGen.execute(LLVMWriteNodeFactory.java:769)
	from com.oracle.truffle.llvm.runtime.nodes.base.LLVMBasicBlockNode$InitializedBlock.doBlock(LLVMBasicBlockNode.java:169)
	from com.oracle.truffle.llvm.runtime.nodes.base.LLVMBasicBlockNodeFactory$InitializedBlockNodeGen.execute(LLVMBasicBlockNodeFactory.java:49)
	from com.oracle.truffle.llvm.runtime.nodes.control.LLVMDispatchBasicBlockNode.doDispatch(LLVMDispatchBasicBlockNode.java:82)
	from com.oracle.truffle.llvm.runtime.nodes.control.LLVMDispatchBasicBlockNodeGen.executeGeneric(LLVMDispatchBasicBlockNodeGen.java:44)
	from com.oracle.truffle.llvm.runtime.nodes.control.LLVMFunctionRootNode.doRun(LLVMFunctionRootNode.java:76)
	from com.oracle.truffle.llvm.runtime.nodes.control.LLVMFunctionRootNodeGen.executeGeneric(LLVMFunctionRootNodeGen.java:46)
	from com.oracle.truffle.llvm.runtime.nodes.func.LLVMFunctionStartNode.execute(LLVMFunctionStartNode.java:87)
	from org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.callProxy(OptimizedCallTarget.java:475)
Translated to internal error
	from -e:1:in `<main>'

[eregon]

On Linux, ruby_native_statistics instead fails to gem install:

$ gem install ruby_native_statistics
Fetching ruby_native_statistics-0.10.1.gem
Building native extensions. This could take a while...
ERROR:  Error installing ruby_native_statistics:
	ERROR: Failed to build gem native extension.

    current directory: /home/eregon/.rubies/truffleruby-dev/lib/gems/gems/ruby_native_statistics-0.10.1/ext/ruby_native_statistics
/home/eregon/.rubies/truffleruby-dev/bin/truffleruby -I /home/eregon/.rubies/truffleruby-dev/lib/mri -r ./siteconf20200311-14839-1byufw7.rb extconf.rb
checking for pow()... no
missing pow()
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
	--with-opt-dir
	--without-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/home/eregon/.rubies/truffleruby-dev/bin/truffleruby

Contents of mkmf.log:
have_func: checking for pow()... -------------------- no

"/home/eregon/.rubies/truffleruby-dev/lib/sulong/native/bin/graalvm-native-clang -o conftest -I/home/eregon/.rubies/truffleruby-dev/lib/cext/include -I/home/eregon/.rubies/truffleruby-dev/lib/cext/include/ruby/backward -I/home/eregon/.rubies/truffleruby-dev/lib/cext/include -I.      -Wimplicit-function-declaration -Wno-int-conversion -Wno-int-to-pointer-cast -Wno-incompatible-pointer-types -Wno-format-invalid-specifier -Wno-format-extra-args -ferror-limit=500 conftest.c  -L. -L/home/eregon/.rubies/truffleruby-dev/lib  -rpath /home/eregon/.rubies/truffleruby-dev/lib/sulong/native/lib     -L/home/eregon/.rubies/truffleruby-dev/lib/cext -rpath /home/eregon/.rubies/truffleruby-dev/lib/cext -ltruffleruby -lpolyglot-mock   "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: int main(int argc, char **argv)
4: {
5:   return 0;
6: }
/* end */

ld.lld: error: undefined symbol: pow
>>> referenced by conftest.c:14
>>>               lto.tmp:(t)
clang-9: error: linker command failed with exit code 1 (use -v to see invocation)
"/home/eregon/.rubies/truffleruby-dev/lib/sulong/native/bin/graalvm-native-clang -o conftest -I/home/eregon/.rubies/truffleruby-dev/lib/cext/include -I/home/eregon/.rubies/truffleruby-dev/lib/cext/include/ruby/backward -I/home/eregon/.rubies/truffleruby-dev/lib/cext/include -I.      -Wimplicit-function-declaration -Wno-int-conversion -Wno-int-to-pointer-cast -Wno-incompatible-pointer-types -Wno-format-invalid-specifier -Wno-format-extra-args -ferror-limit=500 conftest.c  -L. -L/home/eregon/.rubies/truffleruby-dev/lib  -rpath /home/eregon/.rubies/truffleruby-dev/lib/sulong/native/lib     -L/home/eregon/.rubies/truffleruby-dev/lib/cext -rpath /home/eregon/.rubies/truffleruby-dev/lib/cext -ltruffleruby -lpolyglot-mock   "
Process failed: #<Process::Status: pid 14876 exit 1>
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: /*top*/
 4: extern int t(void);
 5: int main(int argc, char **argv)
 6: {
 7:   if (argc > 1000000) {
 8:     int (* volatile tp)(void)=(int (*)(void))&t;
 9:     printf("%d", (*tp)());
10:   }
11: 
12:   return 0;
13: }
14: int t(void) { void ((*volatile p)()); p = (void ((*)()))pow; return !p; }
/* end */

conftest.c:14:13: error: conflicting types for 'pow'
extern void pow();
            ^
/usr/include/bits/mathcalls.h:140:17: note: previous declaration is here
__MATHCALL_VEC (pow,, (_Mdouble_ __x, _Mdouble_ __y));
                ^
conftest.c:15:19: error: too few arguments to function call, expected 2, have 0
int t(void) { pow(); return 0; }
              ~~~ ^
2 errors generated.

Which sounds like a missing -lm flag, which somehow MRI passes to the compiler:

"gcc -o conftest -I/home/eregon/.rubies/ruby-2.6.5/include/ruby-2.6.0/x86_64-linux -I/home/eregon/.rubies/ruby-2.6.5/include/ruby-2.6.0/ruby/backward -I/home/eregon/.rubies/ruby-2.6.5/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-dec\
larations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initia\
lizers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable conftest.c  -L. -L/home/eregon/.rubies/\
ruby-2.6.5/lib -Wl,-rpath,/home/eregon/.rubies/ruby-2.6.5/lib -L. -fstack-protector-strong -rdynamic -Wl,-export-dynamic     -Wl,-rpath,/home/eregon/.rubies/ruby-2.6.5/lib -L/home/eregon/.rubies/ruby-2.6.5/lib -lruby-static -lz -lpthread -lrt -lrt -ldl -lcrypt -lm   -lm   -lc"

[deepj]

@eregon I don't have any problem to compile it on macOS. BTW: Do you use macOS in your CI environment?

[eregon]

Yeah on macOS there is no libm (math), it's part of the libc, so that's why it works there.
Yes, we run a good part of the tests/specs on macOS too.