[gcc r15-4800] RISC-V: Do not inline when callee is versioned but caller is not

[Kito Cheng via Gcc-cvs]

https://gcc.gnu.org/g:eb828a1e380e7bb5a708c899081541ee9130ff87

commit r15-4800-geb828a1e380e7bb5a708c899081541ee9130ff87
Author: Yangyu Chen <c...@cyyself.name>
Date:   Thu Oct 24 15:12:45 2024 +0800

    RISC-V: Do not inline when callee is versioned but caller is not
    
    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.

Diff:
---
 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 8443b29fb8f5..0b3b2c4cba91 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -7693,6 +7693,10 @@ 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);