[Bug target/120263] RISC-V: FRM not restored if clobbered via inline asm

[vineetg at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120263

Vineet Gupta <vineetg at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
             Target|                            |riscv

--- Comment #1 from Vineet Gupta <vineetg at gcc dot gnu.org> ---
RISC-V TARGET_MODE_AFTER seems to handle this case but is transitioning to
wrong state and missing out in generating the restore.

Preliminary patch which fixes the test is 

@@ -12438,7 +12438,7 @@ riscv_frm_mode_after (rtx_insn *insn, int mode)
     return mode;

   if (frm_unknown_dynamic_p (insn))
-    return riscv_vector::FRM_DYN;
+    return riscv_vector::FRM_DYN_EXIT;