Integrated: 8315771: [JVMCI] Resolution of bootstrap methods with int[] static arguments

[Sacha Coppey]

On Wed, 6 Sep 2023 11:24:10 GMT, Sacha Coppey <duke at openjdk.org> wrote:

> Currently, `jdk.vm.ci.meta.ConstantPool.lookupBootstrapMethodInvocation` does not support static arguments of type `int[]`.
> 
> Supporting those static arguments allows to correctly lookup the `BootstrapMethodInvocation` of some `InvokeDynamic` and `DynamicConstant`.
> 
> To lookup the constant at the index in the static arguments index list, a new class is introduced, allowing to lazily resolve the constant or obtain the constant pool index of the arguments:
> 
> 
>     static class CachedBSMArgs extends AbstractList<JavaConstant> {
>         private final JavaConstant[] cache;
>         private final HotSpotConstantPool cp;
>         private final int bssIndex;
> 
>         CachedBSMArgs(HotSpotConstantPool cp, int bssIndex, int size) {
>             this.cp = cp;
>             this.bssIndex = bssIndex;
>             this.cache = new JavaConstant[size];
>         }
> 
>         @Override
>         public JavaConstant get(int index) {
>             JavaConstant res = cache[index];
>             if (res == null) {
>                 int argCpi = compilerToVM().bootstrapArgumentIndexAt(cp, bssIndex, index);
>                 res = compilerToVM().lookupConstantInPool(cp, argCpi, false);
>                 if (res == null) {
>                     res = JavaConstant.forInt(argCpi);
>                 }
>                 cache[index] = res;
>             }
>             return res;
>         }
> 
>         @Override
>         public int size() {
>             return cache.length;
>         }
>     }

This pull request has now been integrated.

Changeset: 015f6f5d
Author:    Sacha Coppey <sacha.coppey at oracle.com>
Committer: Doug Simon <dnsimon at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/015f6f5d9497b8cef9ba2e789799a28bcd454341
Stats:     202 lines in 5 files changed: 184 ins; 8 del; 10 mod

8315771: [JVMCI] Resolution of bootstrap methods with int[] static arguments

Reviewed-by: dnsimon, psandoz

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PR: https://git.openjdk.org/jdk/pull/15588