backend: unify pass memory allocation strategies

It was all over the place for temporary data structures used by
individual passes. Now there is an arena specifically for that, which is
nicer.

1 files changed, 1 insertions, 2 deletions

diff --git a/ir/simpl.c b/ir/simpl.c
index fb89c07..7e6cfd0 100644
--- a/ir/simpl.c
+++ b/ir/simpl.c
@@ -70,7 +70,7 @@ simpl(struct function *fn)
    FREQUIRE(FNUSE);
    int inschange = 0,
        blkchange = 0;
-   struct block **jmpfinal = xcalloc(fn->nblk * sizeof *jmpfinal);
+   struct block **jmpfinal = allocz(fn->passarena, fn->nblk * sizeof *jmpfinal, 0);
    struct block *blk = fn->entry;
 
    do {
@@ -140,7 +140,6 @@ simpl(struct function *fn)
       } while ((blk = blk->lnext) != fn->entry);
       fillpreds(fn);
    }
-   free(jmpfinal);
 }
 
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