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see.c (see_pre_insert_extensions): Use copy_rtx to avoid invalid rtx sharing.

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* see.c (see_pre_insert_extensions): Use copy_rtx to avoid invalid rtx
	sharing.

	* gcc.c-torture/compile/20080522-1.c: New testcase.

From-SVN: r135770
This commit is contained in:
Rafael Avila de Espindola 2008-05-22 15:49:30 +00:00 • committed by Rafael Espindola
parent 5bf6d4abbb
commit 4799e6aa58
4 changed files with 30 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2008-05-22 Rafael Espindola <espindola@google.com>
* see.c (see_pre_insert_extensions): Use copy_rtx to avoid invalid rtx
sharing.
2008-05-22 H.J. Lu <hongjiu.lu@intel.com>
* defaults.h (UNITS_PER_SIMD_WORD): Add scalar mode as argument.

2
gcc/see.c
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@ -1686,7 +1686,7 @@ see_pre_insert_extensions (struct see_pre_extension_expr **index_map)
edge eg = INDEX_EDGE (edge_list, e);
start_sequence ();
emit_insn (PATTERN (expr->se_insn));
emit_insn (copy_insn (PATTERN (expr->se_insn)));
se_insn = get_insns ();
end_sequence ();

4
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,7 @@
2008-05-22 Rafael Espindola <espindola@google.com>
* gcc.c-torture/compile/20080522-1.c: New testcase.
2008-05-22 Richard Guenther <rguenther@suse.de>
* gcc.c-torture/execute/20080522-1.c: New testcase.

20
gcc/testsuite/gcc.c-torture/compile/20080522-1.c Normal file
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@ -0,0 +1,20 @@
/* { dg-do compile }
/* { dg-options "-O2 -fsee" } */
int f(const char* ptr, int bar) {
return (((const char *)0 - ptr ) & (bar - 1)) == 0;
}
int g(const char* ptr, const char *test, int N, int bar) {
if (N == 0) {
}
else if (N > 0) {
int count = 0;
while ( count < N) {
if (!f(ptr, bar))
count++;
}
}
return f(test, bar) ;
}