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SubjectRe: [2.6.15-rc5-git3] hpet.c causes FC4 GCC 4.0.2 to bomb with unrecognizable insn
Alessandro Suardi <alessandro.suardi@gmail.com> wrote:
>
> CC drivers/char/hpet.o
> drivers/char/hpet.c: In function `hpet_calibrate':
> drivers/char/hpet.c:803: Unrecognizable insn:
> (insn/i 95 270 264 (parallel[
> (set (reg:SI 0 eax)
> (asm_operands ("") ("=a") 0[
> (reg:DI 1 edx)
> ]
> [
> (asm_input:DI ("A"))
> ] ("drivers/char/hpet.c") 452))
> (set (reg:SI 1 edx)
> (asm_operands ("") ("=d") 1[
> (reg:DI 1 edx)
> ]
> [
> (asm_input:DI ("A"))
> ] ("drivers/char/hpet.c") 452))
> (clobber (reg:QI 19 dirflag))
> (clobber (reg:QI 18 fpsr))
> (clobber (reg:QI 17 flags))
> ] ) -1 (insn_list 92 (nil))
> (nil))
> drivers/char/hpet.c:803: confused by earlier errors, bailing out
> make[2]: *** [drivers/char/hpet.o] Error 1
> make[1]: *** [drivers/char] Error 2
> make: *** [drivers] Error 2
>

Same compiler works OK here, so it's presumably "fixed" by some some good
.config luck.

If we can find a decent workaround in-kernel it's worth putting it in.
It's quite possible that inlined hpet_time_div() - please try uninlining
it.
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