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Subject: [patch]: pr33617 vector modes have to be passed via memory for x86_64-pc-mingw32
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From: Kai Tietz <Kai.Tietz@onevision.com>
Date: Tue, 18 Mar 2008 09:12:00 -0000
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Hello,

This bug was found via testsuite as regression bug for x86_64 mingw. By 
ABI structures and vector types have to be passed via memory.

ChangeLog entries for gcc

2008-03-18  Kai Tietz  <kai.tietz@onevision.com>

        * gcc/config/i386.c (return_in_memory_ms_64): Vector and block 
types are
        passed via memory. (testsuite gcc.c-torture/compile/pr33617.c).

Tested for x86_64-pc-mingw32 target. Other targets are not affected.

Cheers,
  Kai



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Index: gcc/gcc/config/i386/i386.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- gcc.orig/gcc/config/i386/i386.c
+++ gcc/gcc/config/i386/i386.c
@@ -4827,9 +4827,14 @@ return_in_memory_ms_64 (const_tree type,
   if (!COMPLEX_MODE_P (mode) && size =3D=3D 16 && VECTOR_MODE_P (mode))
     return 0;
=20
-  /* Otherwise, the size must be exactly in [1248]. But not for complex. */
+  /* Structures pass always via memory.  */
+  if (mode =3D=3D BLKmode)
+    return 1;
+
+  /* Otherwise, the size must be exactly in [1248]. But not for complex
+     and vector. */
   return (size !=3D 1 && size !=3D 2 && size !=3D 4 && size !=3D 8)
-         || COMPLEX_MODE_P (mode);
+         || COMPLEX_MODE_P (mode) || VECTOR_MODE_P (mode);
 }
=20
 int
=3D=

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