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2002-09-26 Ulrich Weigand <uweigand@de.ibm.com>
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* reload.c (dup_replacements): New function.
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(find_reloads): Use it to duplicate replacements at the top level
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of match_dup operands.
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2004-10-25 Jakub Jelinek <jakub@redhat.com>
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* gcc.c-torture/execute/20041025-1.c: New test.
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--- gcc/reload.c.jj 2003-04-08 15:51:07.000000000 +0200 1.190
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+++ gcc/reload.c 2004-10-25 13:10:48.056167117 +0200 1.191
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@@ -244,6 +244,7 @@ static enum reg_class find_valid_class P
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unsigned int));
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static int reload_inner_reg_of_subreg PARAMS ((rtx, enum machine_mode, int));
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static void push_replacement PARAMS ((rtx *, int, enum machine_mode));
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+static void dup_replacements PARAMS ((rtx *, rtx *));
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static void combine_reloads PARAMS ((void));
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static int find_reusable_reload PARAMS ((rtx *, rtx, enum reg_class,
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enum reload_type, int, int));
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@@ -1578,6 +1579,25 @@ push_replacement (loc, reloadnum, mode)
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r->mode = mode;
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}
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}
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+
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+/* Duplicate any replacement we have recorded to apply at
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+ location ORIG_LOC to also be performed at DUP_LOC.
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+ This is used in insn patterns that use match_dup. */
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+
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+static void
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+dup_replacements (dup_loc, orig_loc)
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+ rtx *dup_loc;
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+ rtx *orig_loc;
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+{
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+ int i, n = n_replacements;
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+
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+ for (i = 0; i < n; i++)
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+ {
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+ struct replacement *r = &replacements[i];
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+ if (r->where == orig_loc)
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+ push_replacement (dup_loc, r->what, r->mode);
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+ }
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+}
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/* Transfer all replacements that used to be in reload FROM to be in
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reload TO. */
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@@ -3969,9 +3989,7 @@ find_reloads (insn, replace, ind_levels,
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{
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int opno = recog_data.dup_num[i];
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*recog_data.dup_loc[i] = *recog_data.operand_loc[opno];
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- if (operand_reloadnum[opno] >= 0)
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- push_replacement (recog_data.dup_loc[i], operand_reloadnum[opno],
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- insn_data[insn_code_number].operand[opno].mode);
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+ dup_replacements (recog_data.dup_loc[i], recog_data.operand_loc[opno]);
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}
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#if 0
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--- gcc/testsuite/gcc.c-torture/execute/20041025-1.c.jj 2004-10-25 13:13:28.604657996 +0200
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+++ gcc/testsuite/gcc.c-torture/execute/20041025-1.c 2004-10-25 13:11:43.119389360 +0200
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@@ -0,0 +1,17 @@
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+extern void abort (void);
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+
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+void
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+foo (int a, int b, int c, int d, int e, void **f)
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+{
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+ char g[4096];
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+ if (f == 0 || *f != 0)
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+ abort ();
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+}
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+
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+int
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+main (void)
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+{
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+ void *x = 0;
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+ foo (0, 1, 2, 3, 4, &x);
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+ return 0;
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+}
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