[PATCH] intprops: INT_MULTIPLY_WRAPV speedup for GCC 8.4+

[Paul Eggert]

* lib/intprops.h (INT_MULTIPLY_WRAPV): If GCC 8.x where 4 <= x,
remove workaround for GCC bug 91450 as the bug should be fixed
there too.
---
 ChangeLog      | 7 +++++++
 lib/intprops.h | 3 ++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 3f77be228..47b079b82 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2019-11-22  Paul Eggert  <address@hidden>
+
+       intprops: INT_MULTIPLY_WRAPV speedup for GCC 8.4+
+       * lib/intprops.h (INT_MULTIPLY_WRAPV): If GCC 8.x where 4 <= x,
+       remove workaround for GCC bug 91450 as the bug should be fixed
+       there too.
+
 2019-11-21  Bruno Haible  <address@hidden>
 
        Disable many _GL_CXXALIASWARN on all platforms other than glibc systems.
diff --git a/lib/intprops.h b/lib/intprops.h
index d0c2d706d..1d0fb25b2 100644
--- a/lib/intprops.h
+++ b/lib/intprops.h
@@ -373,7 +373,8 @@
    _GL_INT_OP_WRAPV (a, b, r, -, _GL_INT_SUBTRACT_RANGE_OVERFLOW)
 #endif
 #if _GL_HAS_BUILTIN_MUL_OVERFLOW
-# if 9 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# if (9 < __GNUC__ + (3 <= __GNUC_MINOR__) \
+      || (__GNUC__ == 8 && 4 <= __GNUC_MINOR__))
 #  define INT_MULTIPLY_WRAPV(a, b, r) __builtin_mul_overflow (a, b, r)
 # else
    /* Work around GCC bug 91450.  */
-- 
2.23.0