diff options
Diffstat (limited to 'deps/v8/src/ia32/virtual-frame-ia32.h')
| -rw-r--r-- | deps/v8/src/ia32/virtual-frame-ia32.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/deps/v8/src/ia32/virtual-frame-ia32.h b/deps/v8/src/ia32/virtual-frame-ia32.h index e00626b7d..b9faa4614 100644 --- a/deps/v8/src/ia32/virtual-frame-ia32.h +++ b/deps/v8/src/ia32/virtual-frame-ia32.h @@ -139,6 +139,22 @@ class VirtualFrame: public ZoneObject { if (is_used(reg)) SpillElementAt(register_location(reg)); } + // Make the two registers distinct and spill them. Returns the second + // register. If the registers were not distinct then it returns the new + // second register. + Result MakeDistinctAndSpilled(Result* left, Result* right) { + Spill(left->reg()); + Spill(right->reg()); + if (left->reg().is(right->reg())) { + RegisterAllocator* allocator = cgen()->allocator(); + Result fresh = allocator->Allocate(); + ASSERT(fresh.is_valid()); + masm()->mov(fresh.reg(), right->reg()); + return fresh; + } + return *right; + } + // Spill all occurrences of an arbitrary register if possible. Return the // register spilled or no_reg if it was not possible to free any register // (ie, they all have frame-external references). |