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df-scan: fix use of mw_order in df_mw_compare (PR 86096)

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PR rtl-optimization/86096
	* df-scan.c (df_mw_compare): Do not check mw_reg fields when
	comparing mw_order values.

From-SVN: r269189
This commit is contained in:
Alexander Monakov 2019-02-25 18:14:39 +03:00 • committed by Alexander Monakov
parent ea229aa8a1
commit 74a4de687d
2 changed files with 7 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2019-02-25 Alexander Monakov <amonakov@ispras.ru>
PR rtl-optimization/86096
* df-scan.c (df_mw_compare): Do not check mw_reg fields when
comparing mw_order values.
2019-02-25 Jakub Jelinek <jakub@redhat.com>
PR target/89434

5
gcc/df-scan.c
View file

@ -2208,10 +2208,7 @@ df_mw_compare (const df_mw_hardreg *mw1, const df_mw_hardreg *mw2)
if (mw1->end_regno != mw2->end_regno)
return mw1->end_regno - mw2->end_regno;
if (mw1->mw_reg != mw2->mw_reg)
return mw1->mw_order - mw2->mw_order;
return 0;
return mw1->mw_order - mw2->mw_order;
}
/* Like df_mw_compare, but compare two df_mw_hardreg** pointers R1 and R2. */