Fix compiler error with JIT when EXT_M is disabled

eleanorLYJ · eleanorLYJ · commit d6838482ca8d · 2025-01-07T00:13:33.000+08:00
When using 'make ENABLE_EXT_M=0 ENABLE_JIT=1', the following error is
observed:

src/jit.c:1693:13: error: ‘ra_load2_sext’ defined but not used [-Werror=unused-function]
 1693 | static void ra_load2_sext(struct jit_state *state,
      |             ^~~~~~~~~~~~~

Fix this by guarding the ra_load2_sext function definition with
RV32_HAS(EXT_M) macro. This ensures the function is only defined when
the M extension is enabled.
diff --git a/src/jit.c b/src/jit.c
@@ -1690,6 +1690,7 @@ static void ra_load2(struct jit_state *state, int vm_reg_idx1, int vm_reg_idx2)
                   offsetof(riscv_t, X) + 4 * vm_reg_idx2);
 }
 
+#if RV32_HAS(EXT_M)
 static void ra_load2_sext(struct jit_state *state,
                           int vm_reg_idx1,
                           int vm_reg_idx2,
@@ -1733,6 +1734,7 @@ static void ra_load2_sext(struct jit_state *state,
                       offsetof(riscv_t, X) + 4 * vm_reg_idx2);
     }
 }
+#endif
 
 void parse_branch_history_table(struct jit_state *state, rv_insn_t *ir)
 {

Original file line number	Diff line number	Diff line change
`@@ -1690,6 +1690,7 @@ static void ra_load2(struct jit_state *state, int vm_reg_idx1, int vm_reg_idx2)`
`1690`	`1690`	`offsetof(riscv_t, X) + 4 * vm_reg_idx2);`
`1691`	`1691`	`}`
`1692`	`1692`
	`1693`	`+#if RV32_HAS(EXT_M)`
`1693`	`1694`	`static void ra_load2_sext(struct jit_state *state,`
`1694`	`1695`	`int vm_reg_idx1,`
`1695`	`1696`	`int vm_reg_idx2,`
`@@ -1733,6 +1734,7 @@ static void ra_load2_sext(struct jit_state *state,`
`1733`	`1734`	`offsetof(riscv_t, X) + 4 * vm_reg_idx2);`
`1734`	`1735`	`}`
`1735`	`1736`	`}`
	`1737`	`+#endif`
`1736`	`1738`
`1737`	`1739`	`void parse_branch_history_table(struct jit_state state, rv_insn_t ir)`
`1738`	`1740`	`{`