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Diffstat (limited to 'gcc/config/i386/i386.cc')
| -rw-r--r-- | gcc/config/i386/i386.cc | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc index db43045..75a9cb6 100644 --- a/gcc/config/i386/i386.cc +++ b/gcc/config/i386/i386.cc @@ -26397,7 +26397,20 @@ ix86_vector_costs::add_stmt_cost (int count, vect_cost_for_stmt kind, (TREE_OPERAND (gimple_assign_rhs1 (def), 0)))))) { if (fp) - m_num_sse_needed[where]++; + { + /* Scalar FP values residing in x87 registers need to be + spilled and reloaded. */ + auto mode2 = TYPE_MODE (TREE_TYPE (op)); + if (IS_STACK_MODE (mode2)) + { + int cost + = (ix86_cost->hard_register.fp_store[mode2 == SFmode + ? 0 : 1] + + ix86_cost->sse_load[sse_store_index (mode2)]); + stmt_cost += COSTS_N_INSNS (cost) / 2; + } + m_num_sse_needed[where]++; + } else { m_num_gpr_needed[where]++; |