void emitCall(Asm& a, TCA dest, RegSet args) {
// NB: Keep this in sync with Vgen::emit(call) in vasm-x64.cpp.
if (a.jmpDeltaFits(dest)) {
a.call(dest);
} else {
// can't do a near call; store address in data section.
// call by loading the address using rip-relative addressing. This
// assumes the data section is near the current code section. Since
// this sequence is directly in-line, rip-relative like this is
// more compact than loading a 64-bit immediate.
auto addr = mcg->allocLiteral((uint64_t)dest);
a.call(rip[(intptr_t)addr]);
}
}
