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Conditionalize constant folding of math intrinsics on the availability of an implementation on the host. This is a little bit unfortunate, but until someone decides to implement a full libm for APFloat, we don't have a better way to get this functionality.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174561 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
parent
42258e0ea8
commit
ec643abe69
@ -1573,6 +1573,7 @@ dnl===-----------------------------------------------------------------------===
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AC_CHECK_FUNCS([backtrace ceilf floorf roundf rintf nearbyintf getcwd ])
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AC_CHECK_FUNCS([powf fmodf strtof round ])
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AC_CHECK_FUNCS([log log2 log10 exp exp2])
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AC_CHECK_FUNCS([getpagesize getrusage getrlimit setrlimit gettimeofday ])
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AC_CHECK_FUNCS([isatty mkdtemp mkstemp ])
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AC_CHECK_FUNCS([mktemp posix_spawn pread realpath sbrk setrlimit strdup ])
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@ -119,6 +119,12 @@ check_symbol_exists(isnan math.h HAVE_ISNAN_IN_MATH_H)
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check_symbol_exists(ceilf math.h HAVE_CEILF)
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check_symbol_exists(floorf math.h HAVE_FLOORF)
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check_symbol_exists(fmodf math.h HAVE_FMODF)
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check_symbol_exists(log "math.h cmath" HAVE_LOG)
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check_symbol_exists(log2 "math.h cmath" HAVE_LOG2)
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check_symbol_exists(log10 "math.h cmath" HAVE_LOG10)
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check_symbol_exists(exp "math.h cmath" HAVE_EXP)
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check_symbol_exists(exp2 "math.h cmath" HAVE_EXP2)
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check_symbol_exists(exp10 "math.h cmath" HAVE_EXP10)
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if( HAVE_SETJMP_H )
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check_symbol_exists(longjmp setjmp.h HAVE_LONGJMP)
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check_symbol_exists(setjmp setjmp.h HAVE_SETJMP)
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114
configure
vendored
114
configure
vendored
@ -17366,6 +17366,120 @@ done
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for ac_func in log log2 log10 exp exp2
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do
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as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
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{ echo "$as_me:$LINENO: checking for $ac_func" >&5
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echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6; }
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if { as_var=$as_ac_var; eval "test \"\${$as_var+set}\" = set"; }; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
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For example, HP-UX 11i <limits.h> declares gettimeofday. */
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#define $ac_func innocuous_$ac_func
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/* System header to define __stub macros and hopefully few prototypes,
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which can conflict with char $ac_func (); below.
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Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
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<limits.h> exists even on freestanding compilers. */
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#ifdef __STDC__
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# include <limits.h>
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#else
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# include <assert.h>
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#endif
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#undef $ac_func
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/* Override any GCC internal prototype to avoid an error.
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Use char because int might match the return type of a GCC
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builtin and then its argument prototype would still apply. */
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#ifdef __cplusplus
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extern "C"
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#endif
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char $ac_func ();
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/* The GNU C library defines this for functions which it implements
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to always fail with ENOSYS. Some functions are actually named
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something starting with __ and the normal name is an alias. */
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#if defined __stub_$ac_func || defined __stub___$ac_func
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choke me
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#endif
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int
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main ()
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{
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return $ac_func ();
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext conftest$ac_exeext
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if { (ac_try="$ac_link"
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case "(($ac_try" in
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*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
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*) ac_try_echo=$ac_try;;
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esac
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eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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(eval "$ac_link") 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
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{ (case "(($ac_try" in
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*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
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*) ac_try_echo=$ac_try;;
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esac
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eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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(eval "$ac_try") 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; } &&
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{ ac_try='test -s conftest$ac_exeext'
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{ (case "(($ac_try" in
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*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
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*) ac_try_echo=$ac_try;;
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esac
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eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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(eval "$ac_try") 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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eval "$as_ac_var=yes"
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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eval "$as_ac_var=no"
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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fi
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ac_res=`eval echo '${'$as_ac_var'}'`
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{ echo "$as_me:$LINENO: result: $ac_res" >&5
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echo "${ECHO_T}$ac_res" >&6; }
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if test `eval echo '${'$as_ac_var'}'` = yes; then
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cat >>confdefs.h <<_ACEOF
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#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
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_ACEOF
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fi
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done
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for ac_func in getpagesize getrusage getrlimit setrlimit gettimeofday
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do
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as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
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@ -122,6 +122,12 @@
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/* Define to 1 if you have the <execinfo.h> header file. */
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#undef HAVE_EXECINFO_H
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/* Define to 1 if you have the `exp' function. */
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#undef HAVE_EXP
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/* Define to 1 if you have the `exp2' function. */
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#undef HAVE_EXP2
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/* Define to 1 if you have the <fcntl.h> header file. */
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#undef HAVE_FCNTL_H
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@ -225,6 +231,15 @@
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the current directory to the dynamic linker search path. */
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#undef HAVE_LINK_R
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/* Define to 1 if you have the `log' function. */
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#undef HAVE_LOG
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/* Define to 1 if you have the `log10' function. */
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#undef HAVE_LOG10
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/* Define to 1 if you have the `log2' function. */
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#undef HAVE_LOG2
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/* Define to 1 if you have the `longjmp' function. */
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#undef HAVE_LONGJMP
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@ -1282,16 +1282,26 @@ llvm::ConstantFoldCall(Function *F, ArrayRef<Constant *> Operands,
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default: break;
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case Intrinsic::fabs:
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return ConstantFoldFP(fabs, V, Ty);
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#if HAVE_LOG2
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case Intrinsic::log2:
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return ConstantFoldFP(log2, V, Ty);
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#endif
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#if HAVE_LOG
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case Intrinsic::log:
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return ConstantFoldFP(log, V, Ty);
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#endif
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#if HAVE_LOG10
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case Intrinsic::log10:
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return ConstantFoldFP(log10, V, Ty);
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#endif
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#if HAVE_EXP
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case Intrinsic::exp:
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return ConstantFoldFP(exp, V, Ty);
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#endif
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#if HAVE_EXP2
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case Intrinsic::exp2:
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return ConstantFoldFP(exp2, V, Ty);
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#endif
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case Intrinsic::floor:
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return ConstantFoldFP(floor, V, Ty);
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}
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