Craig Topper 4cf2cf18c9 [RISCV][GISel] Stop over promoting G_SITOFP/UITOFP libcalls on RV64. (#118597) ...

When we have legal instructions we want to promote to sXLen and let isel
pattern matching removing the and/sext_inreg.

When using a libcall we want to use a 'si' libcall for small types
instead of 'di'. To match the RV64 ABI, we need to sign extend `unsigned
int` arguments. We reuse the shouldSignExtendTypeInLibCall hook from
SelectionDAG.

2024-12-04 10:42:49 -08:00

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