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8214465: Upgrade arm-sflt minimum architecture to ARMv5TE for assembler

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Reviewed-by: erikj, dholmes
This commit is contained in:
Jakub Vanek 2018-11-29 00:51:58 -05:00 committed by David Holmes
parent 0c151cbbae
commit e4446cf0be
1 changed files with 7 additions and 2 deletions
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9
make/autoconf/flags.m4
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@ -46,6 +46,11 @@ AC_DEFUN([FLAGS_SETUP_ABI_PROFILE],
AC_MSG_CHECKING([for ABI profle])
AC_MSG_RESULT([$OPENJDK_TARGET_ABI_PROFILE])
# --- Arm-sflt CFLAGS and ASFLAGS ---
# Armv5te is required for assembler, because pld insn used in arm32 hotspot is only in v5E and above.
# However, there is also a GCC bug which generates unaligned strd/ldrd instructions on armv5te:
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82445, and it was fixed only quite recently.
# The resulting compromise is to enable v5TE for assembler and let GCC generate code for v5T.
if test "x$OPENJDK_TARGET_ABI_PROFILE" = xarm-vfp-sflt; then
ARM_FLOAT_TYPE=vfp-sflt
ARM_ARCH_TYPE_FLAGS='-march=armv7-a -mthumb'
@ -57,11 +62,11 @@ AC_DEFUN([FLAGS_SETUP_ABI_PROFILE],
elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarm-sflt; then
ARM_FLOAT_TYPE=sflt
ARM_ARCH_TYPE_FLAGS='-march=armv5t -marm'
ARM_ARCH_TYPE_ASFLAGS='-march=armv5t'
ARM_ARCH_TYPE_ASFLAGS='-march=armv5te'
elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarmv5-vfp-sflt; then
ARM_FLOAT_TYPE=vfp-sflt
ARM_ARCH_TYPE_FLAGS='-march=armv5t -marm'
ARM_ARCH_TYPE_ASFLAGS='-march=armv5t'
ARM_ARCH_TYPE_ASFLAGS='-march=armv5te'
elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarmv6-vfp-hflt; then
ARM_FLOAT_TYPE=vfp-hflt
ARM_ARCH_TYPE_FLAGS='-march=armv6 -marm'