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| author | mm <mm@FreeBSD.org> | 2011-03-17 09:44:33 +0000 |
|---|---|---|
| committer | mm <mm@FreeBSD.org> | 2011-03-17 09:44:33 +0000 |
| commit | 1aee4516fc264f425932af170a3aa3702255e945 (patch) | |
| tree | cd86321bd342cacc140be488882c20c7486698dd /contrib/gcc | |
| parent | 70f17b3a4203d9296814ef0afb0029783f905593 (diff) | |
| download | FreeBSD-src-1aee4516fc264f425932af170a3aa3702255e945.zip FreeBSD-src-1aee4516fc264f425932af170a3aa3702255e945.tar.gz | |
Backport missing tunings for -march=core2:
- enable extra 80387 mathematical constants (ext_80387_constants) [1]
- enable compare and exchange 16 bytes (cmpxchg16b) [2]
Verified against llvm-gcc (and apple gcc)
Obtained from: gcc-4.3 (ref. svn revs. 119260 [1], 121140 [2]; GPLv2)
MFC after: 2 weeks
Diffstat (limited to 'contrib/gcc')
| -rw-r--r-- | contrib/gcc/config/i386/i386.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/contrib/gcc/config/i386/i386.c b/contrib/gcc/config/i386/i386.c index 213110b..2567fca 100644 --- a/contrib/gcc/config/i386/i386.c +++ b/contrib/gcc/config/i386/i386.c @@ -926,7 +926,7 @@ const int x86_use_incdec = ~(m_PENT4 | m_NOCONA | m_CORE2 | m_GENERIC); integer data in xmm registers. Which results in pretty abysmal code. */ const int x86_inter_unit_moves = 0 /* ~(m_ATHLON_K8) */; -const int x86_ext_80387_constants = m_K6_GEODE | m_ATHLON | m_PENT4 | m_NOCONA | m_PPRO | m_GENERIC32; +const int x86_ext_80387_constants = m_K6_GEODE | m_ATHLON | m_PENT4 | m_NOCONA | m_CORE2 | m_PPRO | m_GENERIC32; /* Some CPU cores are not able to predict more than 4 branch instructions in the 16 byte window. */ const int x86_four_jump_limit = m_PPRO | m_ATHLON_K8 | m_PENT4 | m_NOCONA | m_CORE2 | m_GENERIC; @@ -937,7 +937,7 @@ const int x86_cmpxchg = ~m_386; /* Compare and exchange 8 bytes was added for pentium. */ const int x86_cmpxchg8b = ~(m_386 | m_486); /* Compare and exchange 16 bytes was added for nocona. */ -const int x86_cmpxchg16b = m_NOCONA; +const int x86_cmpxchg16b = m_NOCONA | m_CORE2; /* Exchange and add was added for 80486. */ const int x86_xadd = ~m_386; const int x86_pad_returns = m_ATHLON_K8 | m_CORE2 | m_GENERIC; |
