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re PR tree-optimization/14703 (Inadequate optimization of inline templated functions, infinite loop in ipa-reference and memory hog)

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PR tree-optimization/14703
	* tree-ssa-live.c (remove_unused_scope_block_p): Remove ignored declarations.
	* passes.c (init_optimization_passes): Recompute inline parameters.
	* g++.dg/tree-ssa-pr14703.C: New testcase.

From-SVN: r140068
This commit is contained in:
Jan Hubicka 2008-09-06 19:10:00 +02:00 • committed by Jan Hubicka
parent 7a687b2265
commit b91bc3493e
5 changed files with 67 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2008-09-06 Jan Hubicka <jh@suse.cz>
PR tree-optimization/14703
* tree-ssa-live.c (remove_unused_scope_block_p): Remove ignored declarations.
* passes.c (init_optimization_passes): Recompute inline parameters.
2008-09-06 Richard Sandiford <rdsandiford@googlemail.com>
* config/mips/mips.c (mips_function_ok_for_sibcall): Check for

1
gcc/passes.c
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@ -565,6 +565,7 @@ init_optimization_passes (void)
}
NEXT_PASS (pass_release_ssa_names);
NEXT_PASS (pass_rebuild_cgraph_edges);
NEXT_PASS (pass_inline_parameters);
}
NEXT_PASS (pass_ipa_increase_alignment);
NEXT_PASS (pass_ipa_matrix_reorg);

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2008-09-06 Jan Hubicka <jh@suse.cz>
* g++.dg/tree-ssa-pr14703.C: New testcase.
2008-09-06 Tobias Burnus <burnus@net-b.de>
PR fortran/36153

49
gcc/testsuite/g++.dg/tree-ssa/pr14703.C Normal file
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@ -0,0 +1,49 @@
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-optimized -fno-ipa-reference" } */
#include <iostream>
namespace {
template <unsigned long long L> class fib {
public:
static const unsigned long long value = fib<L - 1>::value + fib<L - 2>::value;
};
template <> class fib<0> {
public:
static const unsigned long long value = 1;
};
template <> class fib<1> {
public:
static const unsigned long long value = 1;
};
template<unsigned long long L> inline unsigned long long fibconst()
{
return fibconst<L - 1>() + fibconst<L - 2>();
}
template <> inline unsigned long long fibconst<0>()
{
return 1ull;
}
template <> inline unsigned long long fibconst<1>()
{
return 1ull;
}
template <> inline unsigned long long fibconst<2>()
{
return 2ull;
}
}
int main()
{
::std::cerr << "fib<90>::value == " << fib<90>::value << "\n";
::std::cerr << "fibcst<90>() == " << fibconst<90>() << "\n";
}
// { dg-final { scan-tree-dump-not "fibconst" "optimized" } }
// { dg-final { cleanup-tree-dump "optimized" } }

7
gcc/tree-ssa-live.c
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@ -489,6 +489,13 @@ remove_unused_scope_block_p (tree scope)
if (TREE_CODE (*t) == FUNCTION_DECL)
unused = false;
/* Remove everything we don't generate debug info for. */
else if (DECL_IGNORED_P (*t))
{
*t = TREE_CHAIN (*t);
next = t;
}
/* When we are outputting debug info, we usually want to output
info about optimized-out variables in the scope blocks.
Exception are the scope blocks not containing any instructions