[Bug target/103074] [11/12 Regression] ICE in lra_assign, at lra-assigns.c:1649 since r11-5066-gbe39636d9f68c437

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103074

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |vmakarov at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The comment above ix86_hardreg_mov_ok doesn't match the implementation, it
doesn't prevent it before reload but before and during reload (LRA).  So I'd
have expected:
--- gcc/config/i386/i386.c      2021-11-22 10:07:01.336225481 +0100
+++ gcc/config/i386/i386.c      2021-11-22 18:54:22.288643063 +0100
@@ -19367,7 +19367,8 @@ ix86_hardreg_mov_ok (rtx dst, rtx src)
           ? standard_sse_constant_p (src, GET_MODE (dst))
           : x86_64_immediate_operand (src, GET_MODE (dst)))
       && ix86_class_likely_spilled_p (REGNO_REG_CLASS (REGNO (dst)))
-      && !reload_completed)
+      && !reload_completed
+      && !lra_in_progress)
     return false;
   return true;
 }
but, that doesn't really fix it and it is unclear what LRA is unhappy about to
me.