x87_stack_.LeavingBlock(current_block_, LGoto::cast(instr));
} else if (FLAG_debug_code && FLAG_enable_slow_asserts &&
!instr->IsGap() && !instr->IsReturn()) {
+ if (instr->ClobbersDoubleRegisters()) {
+ if (instr->HasDoubleRegisterResult()) {
+ ASSERT_EQ(1, x87_stack_.depth());
+ } else {
+ ASSERT_EQ(0, x87_stack_.depth());
+ }
+ }
__ VerifyX87StackDepth(x87_stack_.depth());
}
}
}
+void LCodeGen::X87LoadForUsage(X87Register reg1, X87Register reg2) {
+ ASSERT(x87_stack_.Contains(reg1));
+ ASSERT(x87_stack_.Contains(reg2));
+ x87_stack_.Fxch(reg1, 1);
+ x87_stack_.Fxch(reg2);
+ x87_stack_.pop();
+ x87_stack_.pop();
+}
+
+
void LCodeGen::X87Stack::Fxch(X87Register reg, int other_slot) {
ASSERT(is_mutable_);
ASSERT(Contains(reg) && stack_depth_ > other_slot);
CpuFeatureScope scope(masm(), SSE2);
__ ucomisd(ToDoubleRegister(left), ToDoubleRegister(right));
} else {
- X87Fxch(ToX87Register(right));
- X87Fxch(ToX87Register(left), 1);
- __ fld(0);
- __ fld(2);
+ X87LoadForUsage(ToX87Register(right), ToX87Register(left));
__ FCmp();
}
// Don't base result on EFLAGS when a NaN is involved. Instead
X87Register left, X87Register right, X87Register result);
void X87LoadForUsage(X87Register reg);
+ void X87LoadForUsage(X87Register reg1, X87Register reg2);
void X87PrepareToWrite(X87Register reg) { x87_stack_.PrepareToWrite(reg); }
void X87CommitWrite(X87Register reg) { x87_stack_.CommitWrite(reg); }