2 Commits

Author	SHA1	Message	Date
Connor Abbott	fb114694e9	[InstCombine] Don't rewrite phi-of-bitcast when the phi has other users ... Judging by the existing comments, this was the intention, but the transform never actually checked if the existing phi's would be removed. See https://bugs.llvm.org/show_bug.cgi?id=44242 for an example where this causes much worse code generation on AMDGPU. Differential Revision: https://reviews.llvm.org/D71209	2019-12-31 12:15:02 +01:00
Connor Abbott	d04e64a25a	[InstCombine] Add tests for PR44242 ... Differential Revision: https://reviews.llvm.org/D71260	2019-12-31 12:15:02 +01:00