The Return of the Frame Pointers
Brendan Gregg
MARCH 16, 2024
This technique saves two instructions in the prologue and epilogue and makes one additional general-purpose register (%rbp) available." As my former Sun Microsystems colleague Eric Schrock (nickname Schrock) wrote in November 2004 : "On i386, you at least had the advantage of increasing the number of usable registers by 20%.
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