[aarch64-port-dev ] git: openjdk/aarch64-port: master: 8268858: Determine register pressure automatically by the number of available registers for allocation

[Yi Yang]

Changeset: 36d82b6e
Author:    Joshua Zhu <jzhu at openjdk.org>
Committer: Yi Yang <yyang at openjdk.org>
Date:      2021-06-23 03:54:00 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/36d82b6ef18d8add5f97fad507b7d86d702bdf13

8268858: Determine register pressure automatically by the number of available registers for allocation

Reviewed-by: kvn, dlong

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/aarch64/c2_globals_aarch64.hpp
! src/hotspot/cpu/arm/arm.ad
! src/hotspot/cpu/arm/c2_globals_arm.hpp
! src/hotspot/cpu/ppc/c2_globals_ppc.hpp
! src/hotspot/cpu/ppc/ppc.ad
! src/hotspot/cpu/s390/c2_globals_s390.hpp
! src/hotspot/cpu/s390/s390.ad
! src/hotspot/cpu/x86/c2_globals_x86.hpp
! src/hotspot/cpu/x86/x86.ad
! src/hotspot/cpu/x86/x86_32.ad
! src/hotspot/cpu/x86/x86_64.ad
! src/hotspot/share/opto/c2_globals.hpp
! src/hotspot/share/opto/chaitin.cpp
! src/hotspot/share/opto/ifg.cpp
! src/hotspot/share/opto/lcm.cpp
! src/hotspot/share/opto/matcher.hpp
! src/hotspot/share/opto/reg_split.cpp
! src/hotspot/share/opto/superword.cpp
+ test/hotspot/jtreg/compiler/regalloc/TestC2IntPressure.java