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8363910: Avoid tuning for Power10 CPUs on Linux ppc64le when gcc < 10 is used

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Reviewed-by: stuefe
This commit is contained in:
Matthias Baesken 2025-07-25 11:34:37 +00:00
parent 518d5f4bbb
commit 41c94eed37
1 changed files with 9 additions and 2 deletions
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11
make/autoconf/flags-cflags.m4
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@ -736,8 +736,15 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
$1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc"
elif test "x$FLAGS_CPU" = xppc64le; then
# Little endian machine uses ELFv2 ABI.
# Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
$1_CFLAGS_CPU="-mcpu=power8 -mtune=power10"
# Use Power8 for target cpu, this is the first CPU to support PPC64 LE with ELFv2 ABI.
# Use Power10 for tuning target, this is supported by gcc >= 10
POWER_TUNE_VERSION="-mtune=power10"
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${POWER_TUNE_VERSION}],
IF_FALSE: [
POWER_TUNE_VERSION="-mtune=power8"
]
)
$1_CFLAGS_CPU="-mcpu=power8 ${POWER_TUNE_VERSION}"
$1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2"
fi
elif test "x$FLAGS_CPU" = xs390x; then