archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-24 04:54:40 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8144771: Use AVX3 instructions for string compare

Browse source 
Co-authored-by: Michael C Berg <michael.c.berg@intel.com>
Reviewed-by: kvn, thartmann
This commit is contained in:
Jan Civlin 2015-12-14 14:48:30 -08:00 • committed by Vladimir Kozlov
parent 6f27a97d77
commit a08d3805f0
6 changed files with 234 additions and 103 deletions
Download patch file Download diff file Expand all files Collapse all files

6
hotspot/src/cpu/x86/vm/sharedRuntime_x86_64.cpp
View file

@ -189,7 +189,7 @@ OopMap* RegisterSaver::save_live_registers(MacroAssembler* masm, int additional_
}
// Save full ZMM registes(16..num_xmm_regs)
base_addr = XSAVE_AREA_UPPERBANK;
int off = 0;
off = 0;
int vector_len = Assembler::AVX_512bit;
for (int n = 16; n < num_xmm_regs; n++) {
__ evmovdqul(Address(rsp, base_addr+(off++*64)), as_XMMRegister(n), vector_len);
@ -199,7 +199,7 @@ OopMap* RegisterSaver::save_live_registers(MacroAssembler* masm, int additional_
if (VM_Version::supports_evex()) {
// Save upper bank of ZMM registers(16..31) for double/float usage
int base_addr = XSAVE_AREA_UPPERBANK;
int off = 0;
off = 0;
for (int n = 16; n < num_xmm_regs; n++) {
__ movsd(Address(rsp, base_addr+(off++*64)), as_XMMRegister(n));
}
@ -325,7 +325,7 @@ void RegisterSaver::restore_live_registers(MacroAssembler* masm, bool restore_ve
assert(MaxVectorSize == 64, "only 512bit vectors are supported now");
}
#else
assert(!save_vectors, "vectors are generated only by C2");
assert(!restore_vectors, "vectors are generated only by C2");
#endif
// On EVEX enabled targets everything is handled in pop fpu state