On 11/6/19 10:02 PM, Bernhard Reutner-Fischer wrote:
Also why do you punt on duplicate conditions like in+++ b/gcc/testsuite/gcc.dg/tree-ssa/if-to-switch-4.c +int main(int argc, char **argv) +{ + if (argc == 1) + else if (argc == 2) + else if (argc == 3) + else if (argc == 4) + else if (argc == 1) + {This block is dead, isn't it. Why don't you just discard it but punt?
Hello. After I moved the pass later in optimization pipeline, such dead conditions are already gone. What's remaining are situations like: if (argc >= 1 && argc <= 10) ... else if (argc >= 8 && argc <= 15) which are overlapping intervals. I'm not planning to handle these in the first iteration of the patch. Martin
