# HG changeset patch
# User Josef Eisl <josef.eisl@jku.at>
# Date 1428937221 -7200
# Node ID c6545476bc7719a5d14ae63da9a910e31db95d0f
# Parent  6daa0fd4af52cc86ae568415a425191127a54bf8
RegisterAllocationConfig: add 'catch-all' constant for RegisterPressure.

diff -r 6daa0fd4af52 -r c6545476bc77 graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/alloc/RegisterAllocationConfig.java
--- a/graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/alloc/RegisterAllocationConfig.java	Mon Apr 13 16:53:47 2015 +0200
+++ b/graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/alloc/RegisterAllocationConfig.java	Mon Apr 13 17:00:21 2015 +0200
@@ -36,6 +36,8 @@
  */
 public class RegisterAllocationConfig {
 
+    public static final String ALL_REGISTERS = "<all>";
+
     private static Register findRegister(String name, Register[] all) {
         for (Register reg : all) {
             if (reg.name.equals(name)) {
@@ -46,7 +48,7 @@
     }
 
     private static Register[] initAllocatable(Register[] registers) {
-        if (RegisterPressure.getValue() != null) {
+        if (RegisterPressure.getValue() != null && !RegisterPressure.getValue().equals(ALL_REGISTERS)) {
             String[] names = RegisterPressure.getValue().split(",");
             Register[] regs = new Register[names.length];
             for (int i = 0; i < names.length; i++) {
diff -r 6daa0fd4af52 -r c6545476bc77 graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/lsra/LinearScanPhase.java
--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/lsra/LinearScanPhase.java	Mon Apr 13 16:53:47 2015 +0200
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/lsra/LinearScanPhase.java	Mon Apr 13 17:00:21 2015 +0200
@@ -43,7 +43,7 @@
             new LinearScan(target, lirGenRes, spillMoveFactory, new RegisterAllocationConfig(lirGenRes.getFrameMapBuilder().getRegisterConfig())).allocate();
         } catch (OutOfRegistersException e) {
             if (RegisterPressure.getValue() != null) {
-                try (OverrideScope s = OptionValue.override(RegisterPressure, null)) {
+                try (OverrideScope s = OptionValue.override(RegisterPressure, RegisterAllocationConfig.ALL_REGISTERS)) {
                     // retry with default register set
                     new LinearScan(target, lirGenRes, spillMoveFactory, new RegisterAllocationConfig(lirGenRes.getFrameMapBuilder().getRegisterConfig())).allocate();
                 }