[Bug 1895703] Re: performance degradation in tcg since Meson switch

[Paolo Bonzini]

This patch shold fix the regression:

diff --git a/configure b/configure
index 0004c46525..0786144043 100755
--- a/configure
+++ b/configure
@@ -7414,6 +7414,7 @@ NINJA=${ninja:-$PWD/ninjatool} $meson setup \
         -Dwerror=$(if test "$werror" = yes; then echo true; else echo false; 
fi) \
         -Dstrip=$(if test "$strip_opt" = yes; then echo true; else echo false; 
fi) \
         -Db_pie=$(if test "$pie" = yes; then echo true; else echo false; fi) \
+        -Db_staticpic=$(if test "$pie" = yes; then echo true; else echo false; 
fi) \
         -Db_coverage=$(if test "$gcov" = yes; then echo true; else echo false; 
fi) \
        -Dmalloc=$malloc -Dmalloc_trim=$malloc_trim -Dsparse=$sparse \
        -Dkvm=$kvm -Dhax=$hax -Dwhpx=$whpx -Dhvf=$hvf \

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https://bugs.launchpad.net/bugs/1895703

Title:
  performance degradation in tcg since Meson switch

Status in QEMU:
  New

Bug description:
  The buildsys conversion to Meson (1d806cef0e3..7fd51e68c34)
  introduced a degradation in performance in some TCG targets:

  --------------------------------------------------------
  Test Program: matmult_double
  --------------------------------------------------------
  Target              Instructions     Previous    Latest
                                       1d806cef   7fd51e68
  ----------  --------------------  ----------  ----------
  alpha              3 233 957 639       -----     +7.472%
  m68k               3 919 110 506       -----    +18.433%
  --------------------------------------------------------

  Original report from Ahmed Karaman with further testing done
  by Aleksandar Markovic:
  https://www.mail-archive.com/qemu-devel@nongnu.org/msg740279.html

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