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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-03-24 13:12:43 -0300 |
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| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2024-04-17 16:12:40 -0300 |
| commit | 0062fcb8bab9fcaddf129bedb0c4f06b1670ad34 (patch) | |
| tree | ed7be760255e979b9b1aca21718d11fb1e12bb5b | |
| parent | 9193695399a8e6cf79a9825a7ef480f21e080583 (diff) | |
| download | glibc-0062fcb8bab9fcaddf129bedb0c4f06b1670ad34.tar.gz glibc-0062fcb8bab9fcaddf129bedb0c4f06b1670ad34.tar.xz glibc-0062fcb8bab9fcaddf129bedb0c4f06b1670ad34.zip | |
Use -ffloat-store iff compiler supports it
| -rwxr-xr-x | configure | 24 | ||||
| -rw-r--r-- | configure.ac | 10 | ||||
| -rw-r--r-- | math/Makefile | 4 |
3 files changed, 36 insertions, 2 deletions
diff --git a/configure b/configure index 56120b2f93..f907145b24 100755 --- a/configure +++ b/configure @@ -7368,6 +7368,30 @@ printf "%s\n" "$libc_cv_cc_rounding_math" >&6; } config_vars="$config_vars config-cflags-frounding-math = $libc_cv_cc_rounding_math" +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for compiler option that -ffloat-store" >&5 +printf %s "checking for compiler option that -ffloat-store... " >&6; } +if test ${libc_cv_cc_float_store+y} +then : + printf %s "(cached) " >&6 +else $as_nop + if { ac_try='${CC-cc} -Werror -ffloat-store -xc /dev/null -S -o /dev/null' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; } +then : + libc_cv_cc_float_store=-ffloat-store +else $as_nop + libc_cv_cc_float_store= +fi + +fi +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_float_store" >&5 +printf "%s\n" "$libc_cv_cc_float_store" >&6; } +config_vars="$config_vars +config-cflags-float-store = $libc_cv_cc_float_store" + { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $CC accepts -fno-tree-loop-distribute-patterns with \ __attribute__ ((__optimize__))" >&5 printf %s "checking if $CC accepts -fno-tree-loop-distribute-patterns with \ diff --git a/configure.ac b/configure.ac index 4007e207e8..ff3f62c063 100644 --- a/configure.ac +++ b/configure.ac @@ -1481,6 +1481,16 @@ LIBC_TRY_CC_OPTION([-Werror -frounding-math], LIBC_CONFIG_VAR([config-cflags-frounding-math], [$libc_cv_cc_rounding_math]) +dnl Determine if compiler supports -ffloat-store +AC_CACHE_CHECK([for compiler option that -ffloat-store], + libc_cv_cc_float_store, [dnl +LIBC_TRY_CC_OPTION([-Werror -ffloat-store], + [libc_cv_cc_float_store=-ffloat-store], + [libc_cv_cc_float_store=]) +]) +LIBC_CONFIG_VAR([config-cflags-float-store], + [$libc_cv_cc_float_store]) + AC_CACHE_CHECK(if $CC accepts -fno-tree-loop-distribute-patterns with \ __attribute__ ((__optimize__)), libc_cv_cc_loop_to_function, [dnl cat > conftest.c <<EOF diff --git a/math/Makefile b/math/Makefile index 192c4fb820..da5d041d6c 100644 --- a/math/Makefile +++ b/math/Makefile @@ -936,7 +936,7 @@ $(objpfx)test-tgmath3-macro-list.out: gen-tgmath-tests.py libm-test-fast-math-cflags = -fno-builtin -D__FAST_MATH__ -DTEST_FAST_MATH libm-test-vec-cflags = $(libm-test-fast-math-cflags) -fno-inline \ - -ffloat-store -D_OPENMP=201307 -Wno-unknown-pragmas + $(libc_cv_cc_float_store) -D_OPENMP=201307 -Wno-unknown-pragmas CFLAGS-test-double-vlen4-wrappers.c += $(double-vlen4-arch-ext-cflags) @@ -952,7 +952,7 @@ CFLAGS-test-float-vlen16-wrappers.c += $(float-vlen16-arch-ext-cflags) # raise spurious exceptions for sNaNs, but also do not test for # exceptions. Thus both versions of the classification macros are # validated. -libm-test-no-inline-cflags = -fno-inline -ffloat-store -fno-builtin \ +libm-test-no-inline-cflags = -fno-inline $(libc_cv_cc_float_store) -fno-builtin \ $(config-cflags-signaling-nans) CFLAGS-test-tgmath.c += -fno-builtin # The following testcase uses very long lines (>3 million), so it may take a |