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Re: patch to improve register preferencing in IRA and to *remove regmove* pass


On 10/30/2013, 7:40 PM, David Edelsohn wrote:
Where was this patch bootstrapped? This appears to have broken
bootstrap on PowerPC (Linux and AIX)

/nasfarm/edelsohn/src/src/libgcc/libgcov.c: In function 'gcov_exit':
/nasfarm/edelsohn/src/src/libgcc/libgcov.c:827:1: internal compiler error: in up
date_costs_from_allocno, at ira-color.c:1334


Sorry for inconvenience, David.

I've tested it thoroughly on x86/x86-64 and ppc a few days ago but it looks like I used LRA. PPC was not so interested for me as this patch affects mostly two-op insn architectures. The problem is specific only for reload and occurs when we reassign pseudo from the reload pass.

I've just committed the patch fixing this.

Sorry again.


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