(combine_instructions): Initialize undobuf in the event

`gen_rtx_combine' is called before `try_combine'. From-SVN: r3359
1993-01-26 19:30:38 -05:00 · 1993-01-26 19:30:38 -05:00 · bef9925b88
parent 42118350f7
commit bef9925b88
1 changed files with 1 additions and 0 deletions
--- a/gcc/combine.c
+++ b/gcc/combine.c
@ -406,6 +406,7 @@ combine_instructions (f, nregs)
  combine_merges = 0;
  combine_extras = 0;
  combine_successes = 0;
+  undobuf.num_undo = previous_num_undos = 0;

  combine_max_regno = nregs;