[backend-fma]添加浮点乘加融合优化，提供开关简单控制是否启用

2025-08-17 00:07:04 +08:00
parent 7be5d25372
commit 07fd22def1
6 changed files with 115 additions and 3 deletions
--- a/src/include/backend/RISCv64/RISCv64LLIR.h
+++ b/src/include/backend/RISCv64/RISCv64LLIR.h
@@ -79,6 +79,7 @@ enum class RVOpcodes {
    FSUB_S, // fsub.s rd, rs1, rs2
    FMUL_S, // fmul.s rd, rs1, rs2
    FDIV_S, // fdiv.s rd, rs1, rs2
+    FMADD_S, // fmadd.s rd, rs1, rs2, rs3
    
    // 浮点比较 (单精度)
    FEQ_S,  // feq.s rd, rs1, rs2 (结果写入整数寄存器rd)