Hideto Ueno 188f9a348d [Attributor] AAValueConstantRange: Value range analysis using constant range ... Summary: This patch introduces `AAValueConstantRange`, which answers a possible range for integer value in a specific program point. One of the motivations is propagating existing `range` metadata. (I think we need to change the situation that `range` metadata cannot be put to Argument). The state is a tuple of `ConstantRange` and it is initialized to (known, assumed) = ([-∞, +∞], empty). Currently, AAValueConstantRange is created in `getAssumedConstant` method when `AAValueSimplify` returns `nullptr`(worst state). Supported - BinaryOperator(add, sub, ...) - CmpInst(icmp eq, ...) - !range metadata `AAValueConstantRange` is not intended to extend to polyhedral range value analysis. Reviewers: jdoerfert, sstefan1 Reviewed By: jdoerfert Subscribers: phosek, davezarzycki, baziotis, hiraditya, javed.absar, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D71620		2020-01-15 16:34:23 +09:00
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llvm	[Attributor] AAValueConstantRange: Value range analysis using constant range	2020-01-15 16:34:23 +09:00
llvm-c	[Coroutines] Rename "legacy" passes (NFC)	2020-01-01 21:41:16 -05:00