JDK-7200233 : C2: can't use expand rules for vector instruction rules
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: hs24
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2012-09-21
- Updated: 2013-06-26
- Resolved: 2012-09-26
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Unresolved : Release in which this issue/RFE will be addressed.
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Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 7 | JDK 8 | Other |
|---|---|---|
7u40Fixed  |
8Fixed |
hs24Fixed |
Related Reports
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Relates :
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Description
I'd like to add rules like the following:
instruct Repl2F_reg(vecD dst, regF src) %{
match(Set dst (ReplicateF src));
expand %{
iRegI tmp;
MoveF2I_reg_reg(tmp, src);
Repl2F_regI(dst,tmp);
%}
%}
instruct vsrl4I_regI(vecX dst, vecX src, iRegI shift) %{
match(Set dst (URShiftVI src (MoveI2F shift)));
expand %{
vecX tmp;
Repl16B_reg(tmp, shift);
vsrl4I_reg(dst, src, tmp);
%}
%}
but the generated expand code will crash because _bottom_type is not
set.
Comments
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