67 lines
2.0 KiB
Diff
67 lines
2.0 KiB
Diff
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2016-02-25 Jakub Jelinek <jakub@redhat.com>
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PR debug/69947
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* dwarf2out.c (prune_unused_types_walk_loc_descr): Handle
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all other ops that have dw_val_class_die_ref operands,
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and DW_OP_GNU_entry_value.
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* gcc.dg/guality/pr69947.c: New test.
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--- gcc/dwarf2out.c.jj 2016-02-25 17:04:11.465781368 +0100
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+++ gcc/dwarf2out.c 2016-02-25 17:41:26.785371399 +0100
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@@ -25641,11 +25641,29 @@ prune_unused_types_walk_loc_descr (dw_lo
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for (; loc != NULL; loc = loc->dw_loc_next)
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switch (loc->dw_loc_opc)
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{
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+ case DW_OP_GNU_implicit_pointer:
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+ case DW_OP_GNU_convert:
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+ case DW_OP_GNU_reinterpret:
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+ if (loc->dw_loc_oprnd1.val_class == dw_val_class_die_ref)
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+ prune_unused_types_mark (loc->dw_loc_oprnd1.v.val_die_ref.die, 1);
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+ break;
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case DW_OP_call2:
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case DW_OP_call4:
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case DW_OP_call_ref:
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+ case DW_OP_GNU_const_type:
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+ case DW_OP_GNU_parameter_ref:
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+ gcc_assert (loc->dw_loc_oprnd1.val_class == dw_val_class_die_ref);
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prune_unused_types_mark (loc->dw_loc_oprnd1.v.val_die_ref.die, 1);
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break;
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+ case DW_OP_GNU_regval_type:
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+ case DW_OP_GNU_deref_type:
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+ gcc_assert (loc->dw_loc_oprnd2.val_class == dw_val_class_die_ref);
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+ prune_unused_types_mark (loc->dw_loc_oprnd2.v.val_die_ref.die, 1);
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+ break;
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+ case DW_OP_GNU_entry_value:
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+ gcc_assert (loc->dw_loc_oprnd1.val_class == dw_val_class_loc);
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+ prune_unused_types_walk_loc_descr (loc->dw_loc_oprnd1.v.val_loc);
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+ break;
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default:
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break;
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}
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--- gcc/testsuite/gcc.dg/guality/pr69947.c.jj 2016-02-25 17:22:13.729098931 +0100
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+++ gcc/testsuite/gcc.dg/guality/pr69947.c 2016-02-25 17:22:13.729098931 +0100
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@@ -0,0 +1,22 @@
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+/* PR debug/69947 */
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+/* { dg-do run } */
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+/* { dg-options "-g" } */
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+
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+#include "../nop.h"
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+
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+static const char *c = "foobar";
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+
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+__attribute__((noinline, noclone)) void
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+foo (void)
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+{
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+ static const char a[] = "abcdefg";
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+ const char *b = a; /* { dg-final { gdb-test 14 "c\[2\]" "'o'" } } */
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+ asm (NOP : : : "memory"); /* { dg-final { gdb-test 14 "b\[4\]" "'e'" } } */
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+}
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+
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+int
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+main ()
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+{
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+ foo ();
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+ return 0;
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+}
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