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8073583: C2 support for CRC32C on SPARC

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Reviewed-by: jrose, kvn
This commit is contained in:
James Cheng 2015-06-29 00:10:01 -07:00 • committed by Vladimir Kozlov
parent 4a826139e3
commit e2533553f6
21 changed files with 746 additions and 19 deletions
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20
hotspot/src/cpu/sparc/vm/vm_version_sparc.cpp
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@ -230,7 +230,7 @@ void VM_Version::initialize() {
assert((OptoLoopAlignment % relocInfo::addr_unit()) == 0, "alignment is not a multiple of NOP size");
char buf[512];
jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
(has_v9() ? ", v9" : (has_v8() ? ", v8" : "")),
(has_hardware_popc() ? ", popc" : ""),
(has_vis1() ? ", vis1" : ""),
@ -242,6 +242,7 @@ void VM_Version::initialize() {
(has_sha1() ? ", sha1" : ""),
(has_sha256() ? ", sha256" : ""),
(has_sha512() ? ", sha512" : ""),
(has_crc32c() ? ", crc32c" : ""),
(is_ultra3() ? ", ultra3" : ""),
(is_sun4v() ? ", sun4v" : ""),
(is_niagara_plus() ? ", niagara_plus" : (is_niagara() ? ", niagara" : "")),
@ -363,6 +364,23 @@ void VM_Version::initialize() {
}
}
// SPARC T4 and above should have support for CRC32C instruction
if (has_crc32c()) {
if (UseVIS > 2) { // CRC32C intrinsics use VIS3 instructions
if (FLAG_IS_DEFAULT(UseCRC32CIntrinsics)) {
FLAG_SET_DEFAULT(UseCRC32CIntrinsics, true);
}
} else {
if (UseCRC32CIntrinsics) {
warning("SPARC CRC32C intrinsics require VIS3 instruction support. Intrinsics will be disabled.");
FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
}
}
} else if (UseCRC32CIntrinsics) {
warning("CRC32C instruction is not available on this CPU");
FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
}
if (FLAG_IS_DEFAULT(ContendedPaddingWidth) &&
(cache_line_size > ContendedPaddingWidth))
ContendedPaddingWidth = cache_line_size;