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ssa-ccp.c (ssa_fast_dce): Update the DF def-use chains after completing fast dead code elimination. 

* ssa-ccp.c (ssa_fast_dce): Update the DF def-use chains
        after completing fast dead code elimination.

From-SVN: r50374
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Jeff Law 2002-03-06 12:56:21 -07:00 committed by Jeff Law
parent 2ca6672b27
commit d094b0b313
2 changed files with 8 additions and 0 deletions
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gcc/ChangeLog
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@ -8,6 +8,9 @@ Wed Mar 6 20:32:09 CET 2002 Jan Hubicka <jh@suse.cz>
Wed Mar 6 12:27:10 2002 Jeffrey A Law (law@redhat.com)
* ssa-ccp.c (ssa_fast_dce): Update the DF def-use chains
after completing fast dead code elimination.
* m68k.h (CONST_COSTS): Lower cost of 0.0 when used inside a
COMPARE operator.

5
gcc/ssa-ccp.c
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@ -1218,4 +1218,9 @@ ssa_fast_dce (df)
}
sbitmap_free (worklist);
/* Update the use-def chains in the df_analyzer as needed. */
df_analyse (df_analyzer, 0,
DF_RD_CHAIN | DF_RU_CHAIN | DF_REG_INFO | DF_HARD_REGS);
}