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8341871: Disable G1 for unsupported platforms after JDK-8334060

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Reviewed-by: mdoerr, erikj
This commit is contained in:
Aleksey Shipilev 2024-10-15 12:55:49 +00:00
parent 54c9348c8c
commit 6ed6dff222
1 changed files with 19 additions and 0 deletions
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19
make/autoconf/jvm-features.m4
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@ -479,6 +479,22 @@ AC_DEFUN([JVM_FEATURES_CALCULATE_ACTIVE],
$JVM_FEATURES_ENABLED, $JVM_FEATURES_DISABLED)
])
################################################################################
# Filter the unsupported feature combinations.
# This is called after JVM_FEATURES_ACTIVE are fully populated.
#
AC_DEFUN([JVM_FEATURES_FILTER_UNSUPPORTED],
[
# G1 late barrier expansion in C2 is not implemented for some platforms.
# Choose not to support G1 in this configuration.
if JVM_FEATURES_IS_ACTIVE(compiler2); then
if test "x$OPENJDK_TARGET_CPU" = "xx86"; then
AC_MSG_NOTICE([G1 cannot be used with C2 on this platform, disabling G1])
UTIL_GET_NON_MATCHING_VALUES(JVM_FEATURES_ACTIVE, $JVM_FEATURES_ACTIVE, "g1gc")
fi
fi
])
################################################################################
# Helper function for JVM_FEATURES_VERIFY. Check if the specified JVM
# feature is active. To be used in shell if constructs, like this:
@ -554,6 +570,9 @@ AC_DEFUN_ONCE([JVM_FEATURES_SETUP],
# The result is stored in JVM_FEATURES_ACTIVE.
JVM_FEATURES_CALCULATE_ACTIVE($variant)
# Filter unsupported feature combinations from JVM_FEATURES_ACTIVE.
JVM_FEATURES_FILTER_UNSUPPORTED
# Verify consistency for JVM_FEATURES_ACTIVE.
JVM_FEATURES_VERIFY($variant)