RFR: 8264874: Build interim-langtools for HotSpot only if Graal is enabled

[Ioi Lam-2]

Many HotSpot developers make only the `hotspot` target, and copy the resulting `libjvm.so` into an already-build JDK image.

HotSpot requires `interim-langtools` only when Graal is enabled. When Graal is disabled, we can avoid building `interim-langtools`. This improves the build time of `make hotspot` by about 20 seconds, or about 15%:

Old:
$ make clean
$ time make hotspot
....
real 1m57.905s
user 42m22.524s
sys 3m7.372s

New:
$ make clean
$ time make hotspot
....
real 1m39.916s
user 41m59.984s
sys 3m3.188s

-------------

Commit messages:
 - 8264874: Build interim-langtools for HotSpot only if Graal is enabled

Changes: https://git.openjdk.java.net/jdk/pull/3389/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3389&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264874
  Stats: 4 lines in 1 file changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3389.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3389/head:pull/3389

PR: https://git.openjdk.java.net/jdk/pull/3389

[Vladimir Kozlov-2]

On Wed, 7 Apr 2021 22:37:28 GMT, Ioi Lam <[hidden email]> wrote:

> Many HotSpot developers make only the `hotspot` target, and copy the resulting `libjvm.so` into an already-build JDK image.
>
> HotSpot requires `interim-langtools` only when Graal is enabled. When Graal is disabled, we can avoid building `interim-langtools`. This improves the build time of `make hotspot` by about 20 seconds, or about 15%:
>
> Old:
> $ make clean
> $ time make hotspot
> ....
> real 1m57.905s
> user 42m22.524s
> sys 3m7.372s
>
> New:
> $ make clean
> $ time make hotspot
> ....
> real 1m39.916s
> user 41m59.984s
> sys 3m3.188s

Good.

-------------

Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/3389

[Erik Joelsson-2]

On Wed, 7 Apr 2021 22:37:28 GMT, Ioi Lam <[hidden email]> wrote:

> Many HotSpot developers make only the `hotspot` target, and copy the resulting `libjvm.so` into an already-build JDK image.
>
> HotSpot requires `interim-langtools` only when Graal is enabled. When Graal is disabled, we can avoid building `interim-langtools`. This improves the build time of `make hotspot` by about 20 seconds, or about 15%:
>
> Old:
> $ make clean
> $ time make hotspot
> ....
> real 1m57.905s
> user 42m22.524s
> sys 3m7.372s
>
> New:
> $ make clean
> $ time make hotspot
> ....
> real 1m39.916s
> user 41m59.984s
> sys 3m3.188s

Marked as reviewed by erikj (Reviewer).

-------------

PR: https://git.openjdk.java.net/jdk/pull/3389

[Ioi Lam-2]

On Thu, 8 Apr 2021 01:13:45 GMT, Vladimir Kozlov <[hidden email]> wrote:

>> Many HotSpot developers make only the `hotspot` target, and copy the resulting `libjvm.so` into an already-build JDK image.
>>
>> HotSpot requires `interim-langtools` only when Graal is enabled. When Graal is disabled, we can avoid building `interim-langtools`. This improves the build time of `make hotspot` by about 20 seconds, or about 15%:
>>
>> Old:
>> $ make clean
>> $ time make hotspot
>> ....
>> real 1m57.905s
>> user 42m22.524s
>> sys 3m7.372s
>>
>> New:
>> $ make clean
>> $ time make hotspot
>> ....
>> real 1m39.916s
>> user 41m59.984s
>> sys 3m3.188s
>
> Good.

Thanks @vnkozlov and @erikj79 for the review!

-------------

PR: https://git.openjdk.java.net/jdk/pull/3389

[Ioi Lam-2]

On Wed, 7 Apr 2021 22:37:28 GMT, Ioi Lam <[hidden email]> wrote:

> Many HotSpot developers make only the `hotspot` target, and copy the resulting `libjvm.so` into an already-build JDK image.
>
> HotSpot requires `interim-langtools` only when Graal is enabled. When Graal is disabled, we can avoid building `interim-langtools`. This improves the build time of `make hotspot` by about 20 seconds, or about 15%:
>
> Old:
> $ make clean
> $ time make hotspot
> ....
> real 1m57.905s
> user 42m22.524s
> sys 3m7.372s
>
> New:
> $ make clean
> $ time make hotspot
> ....
> real 1m39.916s
> user 41m59.984s
> sys 3m3.188s

This pull request has now been integrated.

Changeset: 951f277a
Author:    Ioi Lam <[hidden email]>
URL:       https://git.openjdk.java.net/jdk/commit/951f277a
Stats:     4 lines in 1 file changed: 2 ins; 0 del; 2 mod

8264874: Build interim-langtools for HotSpot only if Graal is enabled

Reviewed-by: kvn, erikj

-------------

PR: https://git.openjdk.java.net/jdk/pull/3389