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Diffstat (limited to 'gcc/config/i386/i386.c')
| -rw-r--r-- | gcc/config/i386/i386.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 95873e2..8e9df35 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -393,6 +393,7 @@ const int x86_accumulate_outgoing_args = m_ATHLON | m_PENT4 | m_PPRO; const int x86_prologue_using_move = m_ATHLON | m_PENT4 | m_PPRO; const int x86_epilogue_using_move = m_ATHLON | m_PENT4 | m_PPRO; const int x86_decompose_lea = m_PENT4; +const int x86_arch_always_fancy_math_387 = m_PENT|m_PPRO|m_ATHLON|m_PENT4; /* In case the avreage insn count for single function invocation is lower than this constant, emit fast (but longer) prologue and @@ -1118,6 +1119,11 @@ override_options () if (flag_unsafe_math_optimizations) target_flags &= ~MASK_IEEE_FP; + /* If the architecture always has an FPU, turn off NO_FANCY_MATH_387, + since the insns won't need emulation. */ + if (x86_arch_always_fancy_math_387 & (1 << ix86_arch)) + target_flags &= ~MASK_NO_FANCY_MATH_387; + if (TARGET_64BIT) { if (TARGET_ALIGN_DOUBLE) |