JDK-8236944 : The legVecZ operand should be limited to zmm0-zmm15 registers
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 11,14,15
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- CPU: x86
- Submitted: 2020-01-10
- Updated: 2020-10-06
- Resolved: 2020-01-13
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| JDK 11 | JDK 14 | JDK 15 |
|---|---|---|
| 11.0.10-oracleFixed | 14 b32Fixed  |
15Fixed |
Related Reports
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Relates :
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Description
Currently legVecZ operand is defined as follows:
operand legVecZ() %{
constraint(ALLOC_IN_RC(vectorz_reg_vl));
match(VecZ);
format %{ %}
interface(REG_INTER);
%}
This allows legVecZ to be zmm0-zmm31 on platforms supporting AVX 512 vl.
The legVecZ should instead be defined as:
operand legVecZ() %{
constraint(ALLOC_IN_RC(vectorz_reg_legacy));
match(VecZ);
format %{ %}
interface(REG_INTER);
%}
Comments
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