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[GR-75340] Mark XMM temps for AMD64 CPU feature region vzeroupper#13489

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graalvmbot merged 1 commit into
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yz/GR-75340
May 7, 2026
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[GR-75340] Mark XMM temps for AMD64 CPU feature region vzeroupper#13489
graalvmbot merged 1 commit into
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yz/GR-75340

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@graalvmbot graalvmbot commented May 6, 2026

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Summary

  • Marks xmm0 through xmm15 as temps on AMD64CPUFeatureRegionLeaveOp so register allocation treats the vzeroupper leave marker as clobbering vector registers.
  • Initializes the temp list from fixed XMM registers in the same style as the AMD64 Base64 LIR ops.
  • Prevents vector values live across a CPU feature region leave from being incorrectly considered preserved when vzeroupper is emitted.

@oracle-contributor-agreement oracle-contributor-agreement Bot added the OCA Verified All contributors have signed the Oracle Contributor Agreement. label May 6, 2026
@graalvmbot graalvmbot closed this May 7, 2026
@graalvmbot graalvmbot deleted the yz/GR-75340 branch May 7, 2026 03:29
@graalvmbot graalvmbot merged commit 4c2fb4c into master May 7, 2026
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