mips.c (function_arg_pass_by_reference): Force to 0 in o32 and o64 ABIs.

* config/mips/mips.c (function_arg_pass_by_reference): Force to 0
in o32 and o64 ABIs.
* config/mips/abi64.h (MUST_PASS_IN_STACK): Define as in expr.h,
but getting fixed-size structs passed in registers regardless of
padding in o32 and o64 ABIs.

From-SVN: r50480

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c9bf259a4bd628ecf111a2bd315c1269140e6c15..68eeab47a7890981da83511e065f67281037a926 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,11 @@
 2002-03-09  Alexandre Oliva  <aoliva@redhat.com>
 
+       * config/mips/mips.c (function_arg_pass_by_reference): Force to 0
+       in o32 and o64 ABIs.
+       * config/mips/abi64.h (MUST_PASS_IN_STACK): Define as in expr.h,
+       but getting fixed-size structs passed in registers regardless of
+       padding in o32 and o64 ABIs.
+
        * config/mips/mips.c (mips_va_arg): Apply big-endianness address
        offset before loading address of argument passed by transparent
        reference.

diff --git a/gcc/config/mips/abi64.h b/gcc/config/mips/abi64.h
index 43887d532f5b18a08f07760fda14556b691109e7..653571792ed2af1cf547f5d0298e994ca1133b18 100644 (file)
--- a/gcc/config/mips/abi64.h
+++ b/gcc/config/mips/abi64.h
@@ -86,6 +86,19 @@ Boston, MA 02111-1307, USA.  */
              || GET_MODE_CLASS (MODE) == MODE_INT)))                   \
       ? downward : upward))
 
+/* Modified version of the macro in expr.h.  */
+#define MUST_PASS_IN_STACK(MODE,TYPE)                  \
+  ((TYPE) != 0                                         \
+   && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST     \
+       || TREE_ADDRESSABLE (TYPE)                      \
+       || ((MODE) == BLKmode                           \
+          && mips_abi != ABI_32 && mips_abi != ABI_O64 \
+          && ! ((TYPE) != 0 && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
+                && 0 == (int_size_in_bytes (TYPE)      \
+                         % (PARM_BOUNDARY / BITS_PER_UNIT))) \
+          && (FUNCTION_ARG_PADDING (MODE, TYPE)        \
+              == (BYTES_BIG_ENDIAN ? upward : downward)))))
+
 /* Under the old (i.e., 32 and O64 ABIs) all BLKmode objects are
    returned in memory.  Under the new (N32 and 64-bit MIPS ABIs) small
    structures are returned in a register.  Objects with varying size

diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 6cdbda5c8b2e1b21d41ac194968b618e8c0e5154..72a1e9c1ac9329997bd0f5bd591a0e072a6dd2b5 100644 (file)
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -8069,6 +8069,9 @@ function_arg_pass_by_reference (cum, mode, type, named)
 {
   int size;
 
+  if (mips_abi == ABI_32 || mips_abi == ABI_O64)
+    return 0;
+
   /* We must pass by reference if we would be both passing in registers
      and the stack.  This is because any subsequent partial arg would be
      handled incorrectly in this case.