src/hotspot/cpu/arm/c1_Runtime1_arm.cpp

rev 51052 : 8207252: C1 still does eden allocations when TLAB is enabled
Summary: Only do eden allocations when TLAB is disabled
Reviewed-by: kbarrett, jrose, tschatzl
Contributed-by: jcbeyler@google.com

*** 544,556 ****
      case fast_new_instance_init_check_id:
        {
          const Register result = R0;
          const Register klass  = R1;
  
!         if (UseTLAB && Universe::heap()->supports_inline_contig_alloc() && id != new_instance_id) {
!           // We come here when TLAB allocation failed.
!           // In this case we try to allocate directly from eden.
            Label slow_case, slow_case_no_pop;
  
            // Make sure the class is fully initialized
            if (id == fast_new_instance_init_check_id) {
              __ ldrb(result, Address(klass, InstanceKlass::init_state_offset()));
--- 544,557 ----
      case fast_new_instance_init_check_id:
        {
          const Register result = R0;
          const Register klass  = R1;
  
!         // If TLAB is disabled, see if there is support for inlining contiguous
!         // allocations.
!         // Otherwise, just go to the slow path.
!         if (!UseTLAB && Universe::heap()->supports_inline_contig_alloc() && id != new_instance_id) {
            Label slow_case, slow_case_no_pop;
  
            // Make sure the class is fully initialized
            if (id == fast_new_instance_init_check_id) {
              __ ldrb(result, Address(klass, InstanceKlass::init_state_offset()));
*** 614,626 ****
  
          const Register result = R0;
          const Register klass  = R1;
          const Register length = R2;
  
!         if (UseTLAB && Universe::heap()->supports_inline_contig_alloc()) {
!           // We come here when TLAB allocation failed.
!           // In this case we try to allocate directly from eden.
            Label slow_case, slow_case_no_pop;
  
  #ifdef AARCH64
            __ mov_slow(Rtemp, C1_MacroAssembler::max_array_allocation_length);
            __ cmp_32(length, Rtemp);
--- 615,628 ----
  
          const Register result = R0;
          const Register klass  = R1;
          const Register length = R2;
  
!         // If TLAB is disabled, see if there is support for inlining contiguous
!         // allocations.
!         // Otherwise, just go to the slow path.
!         if (!UseTLAB && Universe::heap()->supports_inline_contig_alloc()) {
            Label slow_case, slow_case_no_pop;
  
  #ifdef AARCH64
            __ mov_slow(Rtemp, C1_MacroAssembler::max_array_allocation_length);
            __ cmp_32(length, Rtemp);