d0b9173caa
Providing the context to the ast generator allows for additional simplifcations and -- more importantly -- allows to generate loops with only partially bounded domains, assuming the domains are bounded for all parameter configurations that are valid as defined by the context. This change fixes the crash reported in http://llvm.org/PR30956 The original reason why we did not include the context when generating an AST was that CLooG and later isl used to sometimes transfer some of the constraints that bound the size of parameters from the context into the generated AST. This resulted in operations with very large constants, which sometimes introduced problematic integer overflows. The latest versions of the isl AST generator are careful to not introduce such constants. Reported-by: Eli Friedman <efriedma@codeaurora.org> llvm-svn: 286442 |
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| .. | ||
| Ast | ||
| CodeGen | ||
| single_loop_param_less_equal.ll | ||
| single_loop_param_less_than.ll | ||
| single_loop_uint_max_iterations.ll | ||
| single_loop_ull_max_iterations.ll | ||