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authorNaohiro Tamura <naohirot@jp.fujitsu.com>2021-05-12 09:26:40 +0000
committerSzabolcs Nagy <szabolcs.nagy@arm.com>2021-05-26 12:01:06 +0100
commit77d175e14e5f4cf24e9579c03eef5d006a286316 (patch)
treea7d8a3778d938f830137f537796cd9a06e53d4e5 /sysdeps/aarch64/configure
parentbfbdfe4eabb7514d7c44f3bc161fa8ef4e2ee364 (diff)
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config: Added HAVE_AARCH64_SVE_ASM for aarch64
This patch checks if assembler supports '-march=armv8.2-a+sve' to
generate SVE code or not, and then define HAVE_AARCH64_SVE_ASM macro.
Diffstat (limited to 'sysdeps/aarch64/configure')
-rw-r--r--sysdeps/aarch64/configure28
1 files changed, 28 insertions, 0 deletions
diff --git a/sysdeps/aarch64/configure b/sysdeps/aarch64/configure
index 83c3a23e44..4c1fac49f3 100644
--- a/sysdeps/aarch64/configure
+++ b/sysdeps/aarch64/configure
@@ -304,3 +304,31 @@ fi
 $as_echo "$libc_cv_aarch64_variant_pcs" >&6; }
 config_vars="$config_vars
 aarch64-variant-pcs = $libc_cv_aarch64_variant_pcs"
+
+# Check if asm support armv8.2-a+sve
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for SVE support in assembler" >&5
+$as_echo_n "checking for SVE support in assembler... " >&6; }
+if ${libc_cv_asm_sve+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.s <<\EOF
+        ptrue p0.b
+EOF
+if { ac_try='${CC-cc} -c -march=armv8.2-a+sve conftest.s 1>&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+  libc_cv_aarch64_sve_asm=yes
+else
+  libc_cv_aarch64_sve_asm=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_sve" >&5
+$as_echo "$libc_cv_asm_sve" >&6; }
+if test $libc_cv_aarch64_sve_asm = yes; then
+  $as_echo "#define HAVE_AARCH64_SVE_ASM 1" >>confdefs.h
+
+fi