review (S) for
vladimir.kozlov at oracle.com
Wed Dec 15 14:50:02 PST 2010
+ // There no known reason why this should occur but just in case...
What could be the case when assigned_regHi() == -1 but assigned_reg() != -1 (num == 2)?
Tom Rodriguez wrote:
> 6579789: Internal error "c1_LinearScan.cpp:1429 Error: assert(false,"")" in debuggee with fastdebug VM
> When using the x86 FPU, spilling at an exception entry point may
> mutate the intervals so that _sorted_intervals is no longer sorted.
> The fix is detect this case and resort as needed. Additionally I
> added some more assertion checks and fixed a printing problem that
> would assert on partially allocated intervals. Tested with new test
> case and CTW.
More information about the hotspot-compiler-dev