--- a/hotspot/src/cpu/x86/vm/vm_version_x86_64.cpp Tue Oct 14 06:58:58 2008 -0700
+++ b/hotspot/src/cpu/x86/vm/vm_version_x86_64.cpp Tue Oct 14 15:10:26 2008 -0700
@@ -186,8 +186,10 @@
if (!VM_Version::supports_sse2()) {
vm_exit_during_initialization("Unknown x64 processor: SSE2 not supported");
}
- if (UseSSE < 4)
- _cpuFeatures &= ~CPU_SSE4;
+ if (UseSSE < 4) {
+ _cpuFeatures &= ~CPU_SSE4_1;
+ _cpuFeatures &= ~CPU_SSE4_2;
+ }
if (UseSSE < 3) {
_cpuFeatures &= ~CPU_SSE3;
_cpuFeatures &= ~CPU_SSSE3;
@@ -204,7 +206,7 @@
}
char buf[256];
- jio_snprintf(buf, sizeof(buf), "(%u cores per cpu, %u threads per core) family %d model %d stepping %d%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+ jio_snprintf(buf, sizeof(buf), "(%u cores per cpu, %u threads per core) family %d model %d stepping %d%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
cores_per_cpu(), threads_per_core(),
cpu_family(), _model, _stepping,
(supports_cmov() ? ", cmov" : ""),
@@ -215,7 +217,8 @@
(supports_sse2() ? ", sse2" : ""),
(supports_sse3() ? ", sse3" : ""),
(supports_ssse3()? ", ssse3": ""),
- (supports_sse4() ? ", sse4" : ""),
+ (supports_sse4_1() ? ", sse4.1" : ""),
+ (supports_sse4_2() ? ", sse4.2" : ""),
(supports_mmx_ext() ? ", mmxext" : ""),
(supports_3dnow() ? ", 3dnow" : ""),
(supports_3dnow2() ? ", 3dnowext" : ""),
@@ -228,7 +231,7 @@
// older Pentiums which do not support it.
if( UseSSE > 4 ) UseSSE=4;
if( UseSSE < 0 ) UseSSE=0;
- if( !supports_sse4() ) // Drop to 3 if no SSE4 support
+ if( !supports_sse4_1() ) // Drop to 3 if no SSE4 support
UseSSE = MIN2((intx)3,UseSSE);
if( !supports_sse3() ) // Drop to 2 if no SSE3 support
UseSSE = MIN2((intx)2,UseSSE);
@@ -314,6 +317,14 @@
MaxLoopPad = 11;
}
#endif // COMPILER2
+ if( FLAG_IS_DEFAULT(UseXMMForArrayCopy) ) {
+ UseXMMForArrayCopy = true; // use SSE2 movq on new Intel cpus
+ }
+ if( supports_sse4_2() && supports_ht() ) { // Newest Intel cpus
+ if( FLAG_IS_DEFAULT(UseUnalignedLoadStores) && UseXMMForArrayCopy ) {
+ UseUnalignedLoadStores = true; // use movdqu on newest Intel cpus
+ }
+ }
}
}
@@ -355,7 +366,7 @@
#ifndef PRODUCT
if (PrintMiscellaneous && Verbose) {
- tty->print_cr("Logical CPUs per package: %u",
+ tty->print_cr("Logical CPUs per core: %u",
logical_processors_per_package());
tty->print_cr("UseSSE=%d",UseSSE);
tty->print("Allocation: ");