[gcc r13-8616] AVR: target/114752 - Fix ICE on inline asm const 64-bit float operand

[gcc r13-8616] AVR: target/114752 - Fix ICE on inline asm const 64-bit float operand

[Georg-Johann Lay]

https://gcc.gnu.org/g:ca7d454804045a39d10a9b1f691a940aeacdf25b

commit r13-8616-gca7d454804045a39d10a9b1f691a940aeacdf25b
Author: Georg-Johann Lay <avr@gjlay.de>
Date:   Wed Apr 17 10:26:05 2024 +0200

    AVR: target/114752 - Fix ICE on inline asm const 64-bit float operand
    
    gcc/
            PR target/114752
            * config/avr/avr.cc (avr_print_operand) [CONST_DOUBLE_P]: Handle DFmode.
    
    (cherry picked from commit 909c6faf2c726178d115726e56304eac91cff6e9)

Diff:
---
 gcc/config/avr/avr.cc | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/gcc/config/avr/avr.cc b/gcc/config/avr/avr.cc
index d91fa51e78c..f8c4eb327a2 100644
--- a/gcc/config/avr/avr.cc
+++ b/gcc/config/avr/avr.cc
@@ -3333,11 +3333,20 @@ avr_print_operand (FILE *file, rtx x, int code)
     }
   else if (CONST_DOUBLE_P (x))
     {
-      long val;
-      if (GET_MODE (x) != SFmode)
-        fatal_insn ("internal compiler error.  Unknown mode:", x);
-      REAL_VALUE_TO_TARGET_SINGLE (*CONST_DOUBLE_REAL_VALUE (x), val);
-      fprintf (file, "0x%lx", val);
+      if (GET_MODE (x) == SFmode)
+	{
+	  long val;
+	  REAL_VALUE_TO_TARGET_SINGLE (*CONST_DOUBLE_REAL_VALUE (x), val);
+	  fprintf (file, "0x%lx", val);
+	}
+      else if (GET_MODE (x) == DFmode)
+	{
+	  long l[2];
+	  REAL_VALUE_TO_TARGET_DOUBLE (*CONST_DOUBLE_REAL_VALUE (x), l);
+	  fprintf (file, "0x%lx%08lx", l[1] & 0xffffffff, l[0] & 0xffffffff);
+	}
+      else
+	fatal_insn ("internal compiler error.  Unknown mode:", x);
     }
   else if (GET_CODE (x) == CONST_STRING)
     fputs (XSTR (x, 0), file);