49 lines
1.8 KiB
Diff
49 lines
1.8 KiB
Diff
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Backport from upstream, see
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68467
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Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
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diff -Nur gcc-7.2.0.orig/gcc/config/m68k/m68k.c gcc-7.2.0/gcc/config/m68k/m68k.c
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--- gcc-7.2.0.orig/gcc/config/m68k/m68k.c 2017-04-03 22:30:56.274463000 +0000
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+++ gcc-7.2.0/gcc/config/m68k/m68k.c 2018-01-27 02:16:53.779367849 +0000
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@@ -182,6 +182,8 @@
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const_tree, bool);
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static bool m68k_cannot_force_const_mem (machine_mode mode, rtx x);
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static bool m68k_output_addr_const_extra (FILE *, rtx);
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+static machine_mode m68k_promote_function_mode (const_tree, machine_mode,
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+ int *, const_tree, int);
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static void m68k_init_sync_libfuncs (void) ATTRIBUTE_UNUSED;
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static enum flt_eval_method
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m68k_excess_precision (enum excess_precision_type);
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@@ -332,6 +334,9 @@
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#undef TARGET_ATOMIC_TEST_AND_SET_TRUEVAL
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#define TARGET_ATOMIC_TEST_AND_SET_TRUEVAL 128
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+#undef TARGET_PROMOTE_FUNCTION_MODE
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+#define TARGET_PROMOTE_FUNCTION_MODE m68k_promote_function_mode
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+
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static const struct attribute_spec m68k_attribute_table[] =
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{
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/* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,
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@@ -6571,4 +6576,20 @@
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return FLT_EVAL_METHOD_UNPREDICTABLE;
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}
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+/* Implement TARGET_PROMOTE_FUNCTION_MODE. */
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+
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+static machine_mode
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+m68k_promote_function_mode (const_tree type, machine_mode mode,
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+ int *punsignedp ATTRIBUTE_UNUSED,
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+ const_tree fntype ATTRIBUTE_UNUSED,
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+ int for_return)
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+{
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+ /* Promote libcall arguments narrower than int to match the normal C
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+ ABI (for which promotions are handled via
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+ TARGET_PROMOTE_PROTOTYPES). */
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+ if (type == NULL_TREE && !for_return && (mode == QImode || mode == HImode))
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+ return SImode;
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+ return mode;
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+}
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+
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#include "gt-m68k.h"
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