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mesa: Drop -fno-strict-aliasing.

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Improves performance of OglBatch7 by 4.06851% +/- 1.17925% (n=169) on
Haswell, and cuts ~18k of .text:

   text     data      bss      dec      hex  filename
5824627   287816    29384  6141827   5db783  before/i965_dri.so
5806354   287816    29384  6123554   5d7022  after/i965_dri.so

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Matt Turner 2016-05-26 16:34:02 -07:00
parent 12a14052e8
commit 88ad8c7ded
1 changed files with 0 additions and 6 deletions
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6
configure.ac
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@ -300,9 +300,6 @@ if test "x$GCC" = xyes; then
# Restore CFLAGS; VISIBILITY_CFLAGS are added to it where needed.
CFLAGS=$save_CFLAGS
# Work around aliasing bugs - developers should comment this out
CFLAGS="$CFLAGS -fno-strict-aliasing"
# We don't want floating-point math functions to set errno or trap
CFLAGS="$CFLAGS -fno-math-errno -fno-trapping-math"
@ -342,9 +339,6 @@ if test "x$GXX" = xyes; then
# Restore CXXFLAGS; VISIBILITY_CXXFLAGS are added to it where needed.
CXXFLAGS=$save_CXXFLAGS
# Work around aliasing bugs - developers should comment this out
CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
# We don't want floating-point math functions to set errno or trap
CXXFLAGS="$CXXFLAGS -fno-math-errno -fno-trapping-math"
fi