[i386, darwin] Fix pr/49714

[i386, darwin] Fix pr/49714

[Richard Henderson]

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It *appears* as if the references we were generating before
switching the thunk to rtl weren't valid.  Certainly those
same references don't pass legitimate_address_p, which is
the direct cause of the assertion failure.

Fixed by using the same address transformation that 
ix86_expand_call would have used, rather than doing
something by hand.

Thanks to Dominiq for testing.  Committed.


r~

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        PR target/49714
        * config/i386/i386.c (x86_output_mi_thunk): Use
        machopic_indirect_call_target instead of machopic_indirection_name 
        directly.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 4ca95ab..9f63bf7 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -29409,12 +29409,8 @@ x86_output_mi_thunk (FILE *file,
 #if TARGET_MACHO
       else if (TARGET_MACHO)
 	{
-	  rtx sym_ref = XEXP (DECL_RTL (function), 0);
-	  if (TARGET_MACHO_BRANCH_ISLANDS)
-	    sym_ref = (gen_rtx_SYMBOL_REF
-		   (Pmode,
-		    machopic_indirection_name (sym_ref, /*stub_p=*/true)));
-	  fnaddr = gen_rtx_MEM (Pmode, sym_ref);
+	  fnaddr = machopic_indirect_call_target (DECL_RTL (function));
+	  fnaddr = XEXP (fnaddr, 0);
 	}
 #endif /* TARGET_MACHO */
       else