Starting with the 4.5.x series, we have pathological cases (Ada code generated
by a code generator from a model) where FWPROP takes 80% of the compilation
time at -O1 (for essentially no benefits). There are very few basic blocks
(typically 1) and tens of thousands of uses registered with DF,
On Tue, Jan 24, 2012 at 10:26:28PM +0100, Eric Botcazou wrote:
+static bool
+is_too_expensive (const char *pass)
+{
+ int ratio = DF_USES_TABLE_SIZE () / (n_basic_blocks - NUM_FIXED_BLOCKS);
+
+ /* Trying to propagate into uses in functions with gigantic basic blocks
+ will take a
On Tue, Jan 24, 2012 at 10:26 PM, Eric Botcazou ebotca...@adacore.com wrote:
Starting with the 4.5.x series, we have pathological cases (Ada code generated
by a code generator from a model) where FWPROP takes 80% of the compilation
time at -O1 (for essentially no benefits). There are very few
