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Re: Bootstrap times on mainline are getting worse

On Fri, 18 Oct 2002, Kaveh R. Ghazi wrote:

> Care to take a stab?
Heh, having the time to do that would be nice.  A cursory look at
the .diff files doesn't reveal anything blatantly obvious.  Only
three potential candidates:

+2002-10-04  Roger Sayle  <>
+       * config/i386/i386.h (processor_costs): Add new fields fadd,
+       fmul, fdiv, fabs, fchs and fsqrt to costs structure.
+       (RTX_COSTS): Use these fields to determine the RTX costs
+       of floating point addition/subtraction, multiplication,
+       division, fabs, negation and square root respectively.
+       * config/i386/i386.c (size_cost): Provide instruction sizes
+       for these new fields.
+       (i386_cost, i486_cost, pentium_cost, pentiumpro_cost,
+       k6_cost, athlon_cost, pentium4_cost): Provide typical cycle
+       counts for these new fields for all x86 processor variants.

+2002-10-04  Richard Henderson  <>
+       * real.h (SIGNIFICAND_BITS): Add one more word.
+       (CONST_DOUBLE_FORMAT): Accomodate 6 words.
+       * real.c (times_pten): New.
+       (real_to_decimal, real_from_string): Use it.
+       (sticky_rshift_significand): Use & to find modulus.
+       (rshift_significand, lshift_significand): Likewise.
+       (do_divide): Apply sticky bit after normalization.
+       (real_to_decimal, real_to_hexadecimal): Fix sign of Inf and NaN.

+2002-10-04  David Edelsohn  <>
+       * unroll.c (copy_loop_body): Remove REG_EQUAL note attached to
+       copied instruction if the note is not loop invariant.

But neither should have had any effects on SPECint.  Anyway, I'll
start undoing patches as time permits.


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