hg: jdk/submit: 8210416: [linux] Poor StrictMath performance due to non-optimized compilation

[sgehwolf at redhat.com]

Changeset: e6301a4b1db3
Author:    sgehwolf
Date:      2018-09-11 16:27 +0200
URL:       http://hg.openjdk.java.net/jdk/submit/rev/e6301a4b1db3

8210416: [linux] Poor StrictMath performance due to non-optimized compilation
Summary: Compile fdlibm with -O2 -ffp-contract=off on gcc/clang arches.
Reviewed-by: aph, erikj, dholmes, darcy

! make/autoconf/flags-cflags.m4
! make/autoconf/spec.gmk.in
! make/lib/CoreLibraries.gmk