builtins.c (expand_builtin_expect_jump): Fix thinko of reusing live "next" variable, which can lead to an infinite loop.
* builtins.c (expand_builtin_expect_jump): Fix thinko of reusing live "next" variable, which can lead to an infinite loop. From-SVN: r76111
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@ -1,3 +1,8 @@
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2004-01-18 Roger Sayle <roger@eyesopen.com>
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* builtins.c (expand_builtin_expect_jump): Fix thinko of reusing
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live "next" variable, which could lead to an infinite loop.
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2004-01-18 Andrew Pinski <pinskia@physics.uc.edu>
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* config/rs6000/altivec.h: Wrap C++ functions in extern "C++"
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@ -4458,7 +4458,7 @@ expand_builtin_expect_jump (tree exp, rtx if_false_label, rtx if_true_label)
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if (TREE_CODE (TREE_TYPE (arg1)) == INTEGER_TYPE
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&& (integer_zerop (arg1) || integer_onep (arg1)))
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{
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rtx insn, drop_through_label;
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rtx insn, drop_through_label, temp;
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/* Expand the jump insns. */
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start_sequence ();
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@ -4511,13 +4511,15 @@ expand_builtin_expect_jump (tree exp, rtx if_false_label, rtx if_true_label)
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if (next && GET_CODE (next) == JUMP_INSN
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&& any_uncondjump_p (next))
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next = XEXP (SET_SRC (pc_set (next)), 0);
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temp = XEXP (SET_SRC (pc_set (next)), 0);
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else
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temp = next;
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/* NEXT is either a CODE_LABEL, NULL_RTX or something
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/* TEMP is either a CODE_LABEL, NULL_RTX or something
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else that can't possibly match either target label. */
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if (next == if_false_label)
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if (temp == if_false_label)
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taken = 1;
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else if (next == if_true_label)
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else if (temp == if_true_label)
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taken = 0;
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}
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else if (then_dest == pc_rtx)
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@ -4527,11 +4529,13 @@ expand_builtin_expect_jump (tree exp, rtx if_false_label, rtx if_true_label)
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if (next && GET_CODE (next) == JUMP_INSN
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&& any_uncondjump_p (next))
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next = XEXP (SET_SRC (pc_set (next)), 0);
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temp = XEXP (SET_SRC (pc_set (next)), 0);
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else
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temp = next;
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if (next == if_false_label)
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if (temp == if_false_label)
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taken = 0;
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else if (next == if_true_label)
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else if (temp == if_true_label)
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taken = 1;
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}
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