JDK-8154537 : AArch64: some integer rotate instructions are never emitted
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 9
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- CPU: aarch64
- Submitted: 2016-04-19
- Updated: 2021-02-01
- Resolved: 2016-04-20
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| JDK 9 | Other |
|---|---|
9 b120Fixed  |
openjdk8u292Fixed |
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Description
(src >>> shift) | (src << (32 - shift)) and (src >>> shift) | (src << (0 - shift)) with src an int have some support in the aarch64.ad ad file: rorI_rReg_Var_C_32 and rorI_rReg_Var_C0 but their definitions is broken and never match any ideal graph subtree.