re PR tree-optimization/44030 (error: SSA name in freelist but still referenced)
2010-05-08 Richard Guenther <rguenther@suse.de> PR tree-optimization/44030 * tree-ssa-pre.c (eliminate): Copy NECESSARY flag. Set NECESSARY flag if we propagate from a inserted expression. * gcc.c-torture/compile/pr44030.c: New testcase. From-SVN: r159186
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@ -1,3 +1,9 @@
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2010-05-08 Richard Guenther <rguenther@suse.de>
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PR tree-optimization/44030
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* tree-ssa-pre.c (eliminate): Copy NECESSARY flag. Set
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NECESSARY flag if we propagate from a inserted expression.
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2010-05-08 Eric Botcazou <ebotcazou@adacore.com>
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* gimple.c (gimple_types_compatible_p) <ARRAY_TYPE>: Treat bounds of
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@ -1,3 +1,8 @@
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2010-05-08 Richard Guenther <rguenther@suse.de>
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PR tree-optimization/44030
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* gcc.c-torture/compile/pr44030.c: New testcase.
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2010-05-08 Eric Botcazou <ebotcazou@adacore.com>
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* gnat.dg/lto6.adb: New test.
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@ -0,0 +1,28 @@
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typedef int int32_t;
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typedef unsigned int uint32_t;
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static uint32_t
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safe_sub_func_uint32_t_u_u (uint32_t ui1, uint32_t ui2)
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{
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return ui1 - ui2;
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}
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int32_t l_105[7];
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int32_t g_4;
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int32_t *g_54 = &g_4;
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int32_t *
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func (int32_t p_73, int32_t * p_74, int32_t p_75, int32_t * *p_76,
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int32_t * *p_77)
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{
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lbl_110:for (g_4 = 0; g_4; g_4 = 1)
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{
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}
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for (p_75 = -28; p_75; p_75 = safe_sub_func_uint32_t_u_u (p_75, 1))
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{
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if (g_4)
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goto lbl_110;
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*g_54 = 0;
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}
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return &l_105[5];
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}
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@ -4351,6 +4351,7 @@ eliminate (void)
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sprime = fold_convert (TREE_TYPE (res), sprime);
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stmt = gimple_build_assign (res, sprime);
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SSA_NAME_DEF_STMT (res) = stmt;
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gimple_set_plf (stmt, NECESSARY, gimple_plf (phi, NECESSARY));
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gsi2 = gsi_after_labels (b);
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gsi_insert_before (&gsi2, stmt, GSI_NEW_STMT);
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@ -4381,8 +4382,11 @@ eliminate (void)
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&& single_imm_use (lhs, &use_p, &use_stmt)
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&& may_propagate_copy (USE_FROM_PTR (use_p), rhs))
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{
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SET_USE (use_p, gimple_assign_rhs1 (stmt));
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SET_USE (use_p, rhs);
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update_stmt (use_stmt);
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if (bitmap_bit_p (inserted_exprs, SSA_NAME_VERSION (lhs))
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&& TREE_CODE (rhs) == SSA_NAME)
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gimple_set_plf (SSA_NAME_DEF_STMT (rhs), NECESSARY, true);
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}
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/* If this is a store or a now unused copy, remove it. */
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