Mercurial > hg > truffle
annotate README_GRAAL.txt @ 7656:01aeaf194641
Remove exclusion of FastMath::slowLog
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 01 Feb 2013 15:18:22 +0100 |
parents | 5d0bb7d52783 |
children | 3a6a718af535 |
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1 Building Graal |
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2 -------------- |
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3 There is a Python script in mxtool/mx.py that simplifies working with the code |
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4 base. It requires Python 2.7. While you can run this script by using an absolute path, |
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5 it's more convenient to add graal/mxtool to your PATH environment variable so that the |
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6 'mx' helper script can be used. The following instructions in this file assume this |
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7 setup. |
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8 |
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9 Building both the Java and C++ source code comprising the Graal VM |
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10 can be done with the following simple command. |
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11 |
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12 % mx build |
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13 |
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14 This builds the 'product' version of HotSpot with the Graal modifications. |
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15 To build the debug or fastdebug versions: |
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16 |
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17 mx build debug |
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18 mx build fastdebug |
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19 |
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20 Running Graal |
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21 ------------- |
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22 |
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23 To run the VM, use 'mx vm' in place of the standard 'java' command: |
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24 |
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25 % mx vm ... |
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26 |
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27 To select the fastdebug or debug versions of the VM: |
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28 |
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29 % mx --fastdebug vm ... |
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30 % mx --debug vm ... |
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31 |
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32 Graal has an optional bootstrap step where it compiles itself before |
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33 compiling any application code. This bootstrap step currently takes about 7 seconds |
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34 on a fast x64 machine. It's useful to disable this bootstrap step when running small |
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35 programs with the -XX:-BootstrapGraal options. For example: |
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36 |
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37 % mx vm -XX:-BootstrapGraal ... |
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38 |
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39 |
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40 Other Build Configurations |
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41 -------------------------- |
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42 |
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43 By default the build commands above create a HotSpot binary where the Graal |
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44 is the only compiler. This binary is the Graal VM binary and identifies as |
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45 such with the -version option: |
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46 |
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47 % mx vm -XX:-BootstrapGraal -version |
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48 java version "1.7.0_07" |
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49 Java(TM) SE Runtime Environment (build 1.7.0_07-b10) |
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50 OpenJDK 64-Bit Graal VM (build 25.0-b10-internal, mixed mode) |
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51 |
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52 It's also possible to build and execute the standard HotSpot binaries |
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53 using the --vm option: |
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54 |
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55 % mx --vm server build |
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56 % mx --vm server vm -version |
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57 java version "1.7.0_07" |
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58 Java(TM) SE Runtime Environment (build 1.7.0_07-b10) |
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59 OpenJDK 64-Bit Server VM (build 25.0-b10-internal, mixed mode) |
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60 |
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61 These standard binaries still include the code necessary to support use of the |
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62 Graal compiler for explicit compilation requests. However, in this configuration |
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63 the Graal compiler will not service VM issued compilation requests (e.g., upon |
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64 counter overflow in the interpreter). |
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65 |
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66 To build a HotSpot binary that completely omits all VM support for Graal, |
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67 define an environment variable OMIT_GRAAL (its value does not matter) and build |
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68 with the --vm option as above (doing a clean first if necessary): |
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69 |
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70 % env OMIT_GRAAL= mx --vm server build |