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reallocarray: a bit more tuning

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* lib/reallocarray.c: Include intprops.h.
(reallocarray): Use INT_MULTIPLY_WRAPV instead of
xalloc_oversized, as it now suffices and is likely a bit more
efficient (five fewer machine insns on Ubuntu 20.10 x86-64).
* modules/reallocarray (Depends-on): Depend on intprops, not
xalloc-oversized.  Use conditional dependencies to avoid building
realloc-gnu when not needed.
This commit is contained in:
Paul Eggert
2021-04-25 23:11:15 -07:00
parent 974ddbe54c
commit 354b9691ac
3 changed files with 15 additions and 5 deletions
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modules/reallocarray
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@@ -8,8 +8,8 @@ m4/reallocarray.m4
Depends-on:
extensions
xalloc-oversized
realloc-gnu
intprops [test $HAVE_REALLOCARRAY = 0 || test $REPLACE_REALLOCARRAY = 1]
realloc-gnu [test $HAVE_REALLOCARRAY = 0 || test $REPLACE_REALLOCARRAY = 1]
stdlib
configure.ac: