[llvm] [RISCV][CodeGen] Add CodeGen support of Zibi experimental extension (PR #146858)

[Pengcheng Wang via llvm-commits]

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@@ -42,3 +42,12 @@ let Predicates = [HasStdExtZibi] in {
   def BEQI : Branch_imm<0b010, "beqi">;
   def BNEI : Branch_imm<0b011, "bnei">;
 } // Predicates = [HasStdExtZibi]
+
+let Predicates = [HasStdExtZibi] in {
+  multiclass BccImmPat<CondCode Cond, Branch_imm Inst> {
+    def : Pat<(riscv_brcc(XLenVT GPR:$rs1), imm5_zibi:$cimm, Cond, bb:$imm12),
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wangpc-pp wrote:

Please add a space after `riscv_brcc`.

https://github.com/llvm/llvm-project/pull/146858