Status: New
Owner: ----
New issue 376 by [email protected]: Consider using fcomi for
MacroAssembler::FCmp
http://code.google.com/p/v8/issues/detail?id=376
From macro-assembler-ia32.cc:
void MacroAssembler::FCmp() {
fcompp();
push(eax);
fnstsw_ax();
sahf();
pop(eax);
}
Intel P6 introduced a new instruction that can replace this sequence called
fcomi. It is smaller and faster. It should be considered for use in V8.
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