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8f48d45018
apparently, the patchset for gcc 4.2.1 applies properly to the source for gcc 4.2.2 and gcc 4.2.3. so, if you want, you can simply add support for those last two just by augmenting menuconfig and adding a couple symlinks for those two directories. seems like a cheap way to add a couple new versions.
25 lines
920 B
Diff
25 lines
920 B
Diff
diff -durN gcc-4.2.1.orig/gcc/stmt.c gcc-4.2.1/gcc/stmt.c
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--- gcc-4.2.1.orig/gcc/stmt.c 2007-07-19 05:25:32.000000000 +0200
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+++ gcc-4.2.1/gcc/stmt.c 2007-08-03 20:37:19.000000000 +0200
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@@ -2512,7 +2512,11 @@
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use_cost_table
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= (TREE_CODE (orig_type) != ENUMERAL_TYPE
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&& estimate_case_costs (case_list));
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- balance_case_nodes (&case_list, NULL);
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+ /* When optimizing for size, we want a straight list to avoid
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+ jumps as much as possible. This basically creates an if-else
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+ chain. */
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+ if (!optimize_size)
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+ balance_case_nodes (&case_list, NULL);
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emit_case_nodes (index, case_list, default_label, index_type);
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emit_jump (default_label);
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}
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@@ -3070,6 +3074,7 @@
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{
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if (!node_has_low_bound (node, index_type))
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{
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+ if (!optimize_size) /* don't jl to the .default_label. */
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emit_cmp_and_jump_insns (index,
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convert_modes
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(mode, imode,
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