[PATCH v3 08/11] RISC-V: Do not inline when callee is versioned but caller is not

[Yangyu Chen]

When the callee is versioned but the caller is not, we should not inline
the callee into the caller, to prevent the default version of the callee
from being inlined into a not versioned caller.

gcc/ChangeLog:

        * config/riscv/riscv.cc (riscv_can_inline_p): Refuse to inline
        when callee is versioned but caller is not.
---
 gcc/config/riscv/riscv.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index f7082df22ef..46961360096 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -7666,6 +7666,10 @@ riscv_compute_frame_info (void)
 static bool
 riscv_can_inline_p (tree caller, tree callee)
 {
+  /* Do not inline when callee is versioned but caller is not.  */
+  if (DECL_FUNCTION_VERSIONED (callee) && ! DECL_FUNCTION_VERSIONED (caller))
+    return false;
+
   tree callee_tree = DECL_FUNCTION_SPECIFIC_TARGET (callee);
   tree caller_tree = DECL_FUNCTION_SPECIFIC_TARGET (caller);
 
-- 
2.45.2