JDK-8148175 : C1: G1 barriers don't preserve FP registers
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 8u60,9
- Priority: P2
- Status: Closed
- Resolution: Fixed
- Submitted: 2016-01-25
- Updated: 2019-01-14
- Resolved: 2016-03-28
The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
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.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
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 8 | JDK 9 |
|---|---|
8u192Fixed  |
9 b114Fixed |
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Description
I have a code which looks like:
public void go() {
final float FINAL = getValue();
for (...) {
if (FINAL != getValue()) {
System.out.println("FAIL");
}
}
}
float getValue() {
return 6;
}
Being run with G1 and -Xcomp the value of the FINAL variable may change...
The source is attached.
# java -Xmx300m -XX:+UseG1GC -Xmixed TestFinalFloat
Final value: 6.0
Still passed
Still passed
Still passed
Final values has changed: -8.532477E32
TEST FAILED
Comments
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