src/hotspot/cpu/arm/c1_LinearScan_arm.hpp
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src/hotspot/cpu/arm/c1_LinearScan_arm.hpp

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  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef CPU_ARM_VM_C1_LINEARSCAN_ARM_HPP
  26 #define CPU_ARM_VM_C1_LINEARSCAN_ARM_HPP
  27 
  28 inline bool LinearScan::is_processed_reg_num(int reg_num) {
  29   return reg_num < pd_nof_cpu_regs_processed_in_linearscan ||
  30          reg_num >= pd_nof_cpu_regs_frame_map;
  31 }
  32 
  33 inline int LinearScan::num_physical_regs(BasicType type) {
  34 #ifndef AARCH64
  35   if (type == T_LONG || type == T_DOUBLE) return 2;
  36 #endif // !AARCH64
  37   return 1;
  38 }
  39 
  40 
  41 inline bool LinearScan::requires_adjacent_regs(BasicType type) {
  42 #ifdef AARCH64
  43   return false;
  44 #else
  45   return type == T_DOUBLE || type == T_LONG;
  46 #endif // AARCH64
  47 }
  48 
  49 inline bool LinearScan::is_caller_save(int assigned_reg) {
  50   assert(assigned_reg >= 0 && assigned_reg < nof_regs, "should call this only for registers");
  51   // TODO-AARCH64 try to add callee-saved registers
  52   return true;
  53 }
  54 
  55 
  56 inline void LinearScan::pd_add_temps(LIR_Op* op) {
  57   // No extra temporals on ARM
  58 }
  59 
  60 
  61 // Implementation of LinearScanWalker
  62 
  63 inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
  64 #ifndef __SOFTFP__
  65   if (cur->type() == T_FLOAT || cur->type() == T_DOUBLE) {
  66     _first_reg = pd_first_fpu_reg;
  67     _last_reg = pd_first_fpu_reg + pd_nof_fpu_regs_reg_alloc - 1;
  68     return true;
  69   }
  70 #endif // !__SOFTFP__
  71 


  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef CPU_ARM_VM_C1_LINEARSCAN_ARM_HPP
  26 #define CPU_ARM_VM_C1_LINEARSCAN_ARM_HPP
  27 
  28 inline bool LinearScan::is_processed_reg_num(int reg_num) {
  29   return reg_num < pd_nof_cpu_regs_processed_in_linearscan ||
  30          reg_num >= pd_nof_cpu_regs_frame_map;
  31 }
  32 
  33 inline int LinearScan::num_physical_regs(BasicType type) {

  34   if (type == T_LONG || type == T_DOUBLE) return 2;

  35   return 1;
  36 }
  37 
  38 
  39 inline bool LinearScan::requires_adjacent_regs(BasicType type) {



  40   return type == T_DOUBLE || type == T_LONG;

  41 }
  42 
  43 inline bool LinearScan::is_caller_save(int assigned_reg) {
  44   assert(assigned_reg >= 0 && assigned_reg < nof_regs, "should call this only for registers");

  45   return true;
  46 }
  47 
  48 
  49 inline void LinearScan::pd_add_temps(LIR_Op* op) {
  50   // No extra temporals on ARM
  51 }
  52 
  53 
  54 // Implementation of LinearScanWalker
  55 
  56 inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
  57 #ifndef __SOFTFP__
  58   if (cur->type() == T_FLOAT || cur->type() == T_DOUBLE) {
  59     _first_reg = pd_first_fpu_reg;
  60     _last_reg = pd_first_fpu_reg + pd_nof_fpu_regs_reg_alloc - 1;
  61     return true;
  62   }
  63 #endif // !__SOFTFP__
  64 
src/hotspot/cpu/arm/c1_LinearScan_arm.hpp
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