81 lines
2.3 KiB
Diff
81 lines
2.3 KiB
Diff
2007-12-13 Jakub Jelinek <jakub@redhat.com>
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PR bootstrap/34003
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* c-decl.c (merge_decls): Copy RTL from olddecl to newdecl.
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* config/pa/pa.c (pa_encode_section_info): If !first, preserve
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SYMBOL_FLAG_REFERENCED flag.
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* gcc.dg/pr34003-1.c: New test.
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* gcc.dg/pr34003-2.c: New.
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--- gcc/c-decl.c.jj 2007-11-26 22:14:08.000000000 +0100
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+++ gcc/c-decl.c 2007-12-13 20:11:33.000000000 +0100
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@@ -1670,6 +1670,9 @@ merge_decls (tree newdecl, tree olddecl,
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}
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}
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+ /* Keep the old rtl since we can safely use it. */
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+ if (HAS_RTL_P (olddecl))
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+ COPY_DECL_RTL (olddecl, newdecl);
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/* Merge the type qualifiers. */
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if (TREE_READONLY (newdecl))
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--- gcc/config/pa/pa.c.jj 2007-12-13 18:56:21.000000000 +0100
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+++ gcc/config/pa/pa.c 2007-12-13 20:32:04.000000000 +0100
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@@ -7834,6 +7834,12 @@ hppa_encode_label (rtx sym)
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static void
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pa_encode_section_info (tree decl, rtx rtl, int first)
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{
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+ int old_referenced = 0;
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+
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+ if (!first && MEM_P (rtl) && GET_CODE (XEXP (rtl, 0)) == SYMBOL_REF)
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+ old_referenced
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+ = SYMBOL_REF_FLAGS (XEXP (rtl, 0)) & SYMBOL_FLAG_REFERENCED;
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+
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default_encode_section_info (decl, rtl, first);
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if (first && TEXT_SPACE_P (decl))
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@@ -7842,6 +7848,8 @@ pa_encode_section_info (tree decl, rtx r
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if (TREE_CODE (decl) == FUNCTION_DECL)
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hppa_encode_label (XEXP (rtl, 0));
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}
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+ else if (old_referenced)
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+ SYMBOL_REF_FLAGS (XEXP (rtl, 0)) |= old_referenced;
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}
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/* This is sort of inverse to pa_encode_section_info. */
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--- gcc/testsuite/gcc.dg/pr34003-1.c.jj 2007-12-13 21:07:51.000000000 +0100
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+++ gcc/testsuite/gcc.dg/pr34003-1.c 2007-12-13 21:07:15.000000000 +0100
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@@ -0,0 +1,8 @@
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+/* PR bootstrap/34003 */
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+/* { dg-do link } */
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+/* { dg-options "-O0" } */
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+/* { dg-additional-sources "pr34003-2.c" } */
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+
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+extern void foo (void);
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+int bar (void) { foo (); return 1; }
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+extern void foo (void);
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--- gcc/testsuite/gcc.dg/pr34003-2.c.jj 2007-12-13 21:07:59.000000000 +0100
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+++ gcc/testsuite/gcc.dg/pr34003-2.c 2007-12-13 21:09:35.000000000 +0100
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@@ -0,0 +1,20 @@
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+/* PR bootstrap/34003 */
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+/* { dg-do compile } */
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+/* { dg-options "-O0" } */
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+
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+extern void abort (void);
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+
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+int seen = 0;
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+
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+void foo (void)
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+{
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+ ++seen;
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+}
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+
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+int main (void)
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+{
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+ extern int bar (void);
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+ if (bar () != 1 || seen != 1)
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+ abort ();
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+ return 0;
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+}
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