[llvm] [AArch64] Generalize integer FPR lane stores for all types (PR #134117)

[Paul Walker via llvm-commits]

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@@ -4589,6 +4589,12 @@ def : Pat<(truncstorei16 GPR64:$Rt, (am_unscaled16 GPR64sp:$Rn, simm9:$offset)),
 def : Pat<(truncstorei8 GPR64:$Rt, (am_unscaled8 GPR64sp:$Rn, simm9:$offset)),
   (STURBBi (EXTRACT_SUBREG GPR64:$Rt, sub_32), GPR64sp:$Rn, simm9:$offset)>;
 
+// aarch64mfp8 (bsub) stores
+def : Pat<(store aarch64mfp8:$Rt, (am_unscaled8 GPR64sp:$Rn, simm9:$offset)),
+          (STURBi FPR8:$Rt, GPR64sp:$Rn, simm9:$offset)>;
+def : Pat<(store aarch64mfp8:$Rt, (am_indexed8 GPR64sp:$Rn, uimm12s4:$offset)),
+          (STRBui FPR8:$Rt, GPR64sp:$Rn, uimm12s4:$offset)>;
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paulwalker-arm wrote:

This should use `uimm12s1` given they are byte stores?

https://github.com/llvm/llvm-project/pull/134117