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7063628: Use cbcond on T4

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Add new short branch instruction to Hotspot sparc assembler.

Reviewed-by: never, twisti, jrose
This commit is contained in:
Vladimir Kozlov 2011-07-21 11:25:07 -07:00
parent aa16309657
commit 48c1293916
30 changed files with 966 additions and 1097 deletions
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24
hotspot/src/cpu/sparc/vm/c1_Runtime1_sparc.cpp
View file

@ -71,8 +71,7 @@ int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address e
{ Label L;
Address exception_addr(G2_thread, Thread::pending_exception_offset());
ld_ptr(exception_addr, Gtemp);
br_null(Gtemp, false, pt, L);
delayed()->nop();
br_null_short(Gtemp, pt, L);
Address vm_result_addr(G2_thread, JavaThread::vm_result_offset());
st_ptr(G0, vm_result_addr);
Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset());
@ -333,9 +332,7 @@ OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) {
assert(deopt_blob != NULL, "deoptimization blob must have been created");
Label no_deopt;
__ tst(O0);
__ brx(Assembler::equal, false, Assembler::pt, no_deopt);
__ delayed()->nop();
__ br_null_short(O0, Assembler::pt, no_deopt);
// return to the deoptimization handler entry for unpacking and rexecute
// if we simply returned the we'd deopt as if any call we patched had just
@ -402,18 +399,15 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
if (id == fast_new_instance_init_check_id) {
// make sure the klass is initialized
__ ld(G5_klass, instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc), G3_t1);
__ cmp(G3_t1, instanceKlass::fully_initialized);
__ br(Assembler::notEqual, false, Assembler::pn, slow_path);
__ delayed()->nop();
__ cmp_and_br_short(G3_t1, instanceKlass::fully_initialized, Assembler::notEqual, Assembler::pn, slow_path);
}
#ifdef ASSERT
// assert object can be fast path allocated
{
Label ok, not_ok;
__ ld(G5_klass, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc), G1_obj_size);
__ cmp(G1_obj_size, 0); // make sure it's an instance (LH > 0)
__ br(Assembler::lessEqual, false, Assembler::pn, not_ok);
__ delayed()->nop();
// make sure it's an instance (LH > 0)
__ cmp_and_br_short(G1_obj_size, 0, Assembler::lessEqual, Assembler::pn, not_ok);
__ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size);
__ br(Assembler::zero, false, Assembler::pn, ok);
__ delayed()->nop();
@ -501,9 +495,7 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
int tag = ((id == new_type_array_id)
? Klass::_lh_array_tag_type_value
: Klass::_lh_array_tag_obj_value);
__ cmp(G3_t1, tag);
__ brx(Assembler::equal, false, Assembler::pt, ok);
__ delayed()->nop();
__ cmp_and_brx_short(G3_t1, tag, Assembler::equal, Assembler::pt, ok);
__ stop("assert(is an array klass)");
__ should_not_reach_here();
__ bind(ok);
@ -519,9 +511,7 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
// check that array length is small enough for fast path
__ set(C1_MacroAssembler::max_array_allocation_length, G3_t1);
__ cmp(G4_length, G3_t1);
__ br(Assembler::greaterUnsigned, false, Assembler::pn, slow_path);
__ delayed()->nop();
__ cmp_and_br_short(G4_length, G3_t1, Assembler::greaterUnsigned, Assembler::pn, slow_path);
// if we got here then the TLAB allocation failed, so try
// refilling the TLAB or allocating directly from eden.