[RISCV] ReadStoreData is read later in the pipeline for SiFive7 (#86454)

Store data is read later in the pipeline, so we use
SiFive7AnyToGPRBypass to model that a store instruction can begin some
cycles before that data is ready.

Author: michaelmaitland

llvm/lib/Target/RISCV/RISCVSchedSiFive7.td

@@ -950,7 +950,7 @@ def : InstRW<[WriteIALU], (instrs COPY)>;
 def : SiFive7AnyToGPRBypass<ReadJmp>;
 def : SiFive7AnyToGPRBypass<ReadJalr>;
 def : ReadAdvance<ReadCSR, 0>;
-def : ReadAdvance<ReadStoreData, 0>;
+def : SiFive7AnyToGPRBypass<ReadStoreData>;
 def : ReadAdvance<ReadMemBase, 0>;
 def : SiFive7AnyToGPRBypass<ReadIALU>;
 def : SiFive7AnyToGPRBypass<ReadIALU32>;