re PR tree-optimization/91109 ([arm] gcc.c-torture/execute/20040709-1.c fails since r273135)
2019-08-16 Bernd Edlinger <bernd.edlinger@hotmail.de> PR tree-optimization/91109 * lra-int.h (lra_need_for_scratch_reg_p): Declare. * lra.c (lra): Use lra_need_for_scratch_reg_p. * lra-spills.c (lra_need_for_scratch_reg_p): New function. From-SVN: r274573
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2019-08-16 Bernd Edlinger <bernd.edlinger@hotmail.de>
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PR tree-optimization/91109
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* lra-int.h (lra_need_for_scratch_reg_p): Declare.
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* lra.c (lra): Use lra_need_for_scratch_reg_p.
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* lra-spills.c (lra_need_for_scratch_reg_p): New function.
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2019-08-16 Uroš Bizjak <ubizjak@gmail.com>
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2019-08-16 Uroš Bizjak <ubizjak@gmail.com>
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* config/i386/mmx.md (mmxdoublemode): New mode attribute.
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* config/i386/mmx.md (mmxdoublemode): New mode attribute.
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@ -396,6 +396,7 @@ extern bool lra_coalesce (void);
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/* lra-spills.c: */
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/* lra-spills.c: */
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extern bool lra_need_for_scratch_reg_p (void);
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extern bool lra_need_for_spills_p (void);
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extern bool lra_need_for_spills_p (void);
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extern void lra_spill (void);
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extern void lra_spill (void);
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extern void lra_final_code_change (void);
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extern void lra_final_code_change (void);
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@ -549,6 +549,19 @@ spill_pseudos (void)
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}
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}
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}
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}
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/* Return true if we need scratch reg assignments. */
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bool
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lra_need_for_scratch_reg_p (void)
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{
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int i; max_regno = max_reg_num ();
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for (i = FIRST_PSEUDO_REGISTER; i < max_regno; i++)
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if (lra_reg_info[i].nrefs != 0 && lra_get_regno_hard_regno (i) < 0
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&& lra_former_scratch_p (i))
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return true;
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return false;
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}
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/* Return true if we need to change some pseudos into memory. */
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/* Return true if we need to change some pseudos into memory. */
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bool
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bool
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lra_need_for_spills_p (void)
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lra_need_for_spills_p (void)
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@ -2567,7 +2567,11 @@ lra (FILE *f)
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lra_create_live_ranges (lra_reg_spill_p, true);
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lra_create_live_ranges (lra_reg_spill_p, true);
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live_p = true;
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live_p = true;
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if (! lra_need_for_spills_p ())
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if (! lra_need_for_spills_p ())
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break;
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{
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if (lra_need_for_scratch_reg_p ())
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continue;
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break;
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}
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}
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}
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lra_spill ();
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lra_spill ();
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/* Assignment of stack slots changes elimination offsets for
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/* Assignment of stack slots changes elimination offsets for
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