4 Commits

Author	SHA1	Message	Date
Matt Arsenault	8e3e218a5f	llvm-reduce: Fix producing invalid reductions on ifunc	2022-11-27 12:41:29 -05:00
Arthur Eubanks	309d453866	[llvm-reduce] Move most debugging output behind --verbose ... This should cut down on the visual noise when reducing. Still keep output when we run a pass or when we successfully reduce. Notably, this also suppresses redirecting the test output to stdout/stderr. Reviewed By: regehr Differential Revision: https://reviews.llvm.org/D131922	2022-08-19 13:25:42 -07:00
Arthur Eubanks	195087d815	[llvm-reduce] Try harder to not create invalid aliases ... This was done by adding --abort-on-invalid-reduction to remove-function-bodies-used-in-globals.ll and fixing the fallout. Aliases must have a GlobalValue or ConstantExpr aliasee and the aliasee must be a definition if it's a GlobalValue. Don't RAUW functions with null if there's an alias pointing to it, and similarly don't delete the body of a function. Don't delete the entire body of a function when reducing blocks, preserve at least one block. Also make debugging these sorts of things easier by dumping the module when --abort-on-invalid-reduction triggers. Reviewed By: regehr Differential Revision: https://reviews.llvm.org/D131505	2022-08-12 10:39:05 -07:00
John Regehr	2962f9df7c	stop llvm-reduce from introducing undefs ... Differential Revision: https://reviews.llvm.org/D128317	2022-06-22 20:41:23 -06:00