8314262: GHA: Cut down cross-compilation sysroots deeper

[shipilev]

JDK-8294941 cut out some unused files in GHA sysroots. But I notice that even after that, we still have quite a bit of fluff there, especially in RISC-V sysroot. We can cut a bit deeper. Notably, we don't need runnable gcc in the sysroot, because we use the cross-compilation toolchain from the host.

This further saves bandwidth, cache size, etc. for actively developed projects.

Seeing the following improvements in sysroot sizes:

ARM:      64 MB ->  37 MB
AArch64:  80 MB ->  46 MB
S390X:    69 MB ->  41 MB
PPC64:    84 MB ->  51 MB
RISC-V:  287 MB ->  53 MB

Total:   584 MB -> 228 MB (-61%)

Additional testing:

• GHA (cross-builds still work fine)

---

Progress

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Issue

• JDK-8314262: GHA: Cut down cross-compilation sysroots deeper (Enhancement - P4)

Reviewers

• Erik Joelsson (@erikj79 - Reviewer)

Reviewing

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@shipilev This change now passes all automated pre-integration checks.

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After integration, the commit message for the final commit will be:

8314262: GHA: Cut down cross-compilation sysroots deeper

Reviewed-by: erikj

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At the time when this comment was updated there had been 42 new commits pushed to the master branch:

• 0f5e030: 8309335: Get rid of use of reflection to call Thread.isVirtual() in nsk/jdi/EventRequestManager/stepRequests/stepreq001t.java
• f66c73d: 8314166: Update googletest to v1.14.0
• f239954: 8310134: NMT: thread count in Thread section of VM.native_memory output confusing with virtual threads
• 2e8a0ab: 8314120: Add tests for FileDescriptor.sync
• 80809ef: 8314248: Remove HotSpotConstantPool::isResolvedDynamicInvoke
• 004651d: 8311557: [JVMCI] deadlock with JVMTI thread suspension
• 9ded868: 8314114: Fix -Wconversion warnings in os code, primarily linux
• a02d65e: 8310308: IR Framework: check for type and size of vector nodes
• dff99f7: 8313782: Add user-facing warning if THPs are enabled but cannot be used
• f4e72c5: 8313949: Missing word in GPLv2 license text in StackMapTableAttribute.java
• ... and 32 more: https://git.openjdk.org/jdk/compare/43462a36ab02b67d426c04d345868bd420b30c25...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[shipilev]

/integrate

[openjdk]

Going to push as commit 38687f1.
Since your change was applied there have been 49 commits pushed to the master branch:

• a602624: 8314020: Print instruction blocks in byte units
• 0b12480: 8314233: C2: assert(assertion_predicate_has_loop_opaque_node(iff)) failed: unexpected
• e1fdef5: 8314324: "8311557: [JVMCI] deadlock with JVMTI thread suspension" causes various failures
• 2bd2fae: 4346610: Adding JSeparator to JToolBar "pushes" buttons added after separator to edge
• 6a15860: 8314163: os::print_hex_dump prints incorrectly for big endian platforms and unit sizes larger than 1
• 6bf4a33: 8314242: Update applications/scimark/Scimark.java to accept VM flags
• bc8e9f4: 8311591: Add SystemModulesPlugin test case that splits module descriptors with new local variables defined by DedupSetBuilder
• 0f5e030: 8309335: Get rid of use of reflection to call Thread.isVirtual() in nsk/jdi/EventRequestManager/stepRequests/stepreq001t.java
• f66c73d: 8314166: Update googletest to v1.14.0
• f239954: 8310134: NMT: thread count in Thread section of VM.native_memory output confusing with virtual threads
• ... and 39 more: https://git.openjdk.org/jdk/compare/43462a36ab02b67d426c04d345868bd420b30c25...master

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit 38687f1.

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