On 8/1/23 17:38, Vineet Gupta wrote:
Also note that getting FP out of the shift-add sequences is the other
key goal of Jivan's work. FP elimination always results in a
spill/reload if we have a shift-add insn where one operand is FP.
Hmm, are you saying it should NOT be generating shift-add with SP as
src, because currently thats exactly what fold FP offset *is* doing and
is the reason it has 5 less insns.
We should not have shift-add with FP as a source prior to register
allocation because it will almost always generate spill code.
jeff
