llvm-project

Commit Graph

Author	SHA1	Message	Date
Eli Friedman	2a2847823f	[ConstantFold] Get rid of special cases for sizeof etc. Target-dependent constant folding will fold these down to simple constants (or at least, expressions that don't involve a GEP). We don't need heroics to try to optimize the form of the expression before that happens. Fixes https://bugs.llvm.org/show_bug.cgi?id=51232 . Differential Revision: https://reviews.llvm.org/D107116	2021-07-31 13:20:47 -07:00
Tim Shen	a0757d8ebd	Patch by @wecing (Chenguang Wang). The current getFoldedSizeOf() implementation uses naive recursion, which could be really slow when the input structure type is too complex. This issue was first brought up in http://llvm.org/bugs/show_bug.cgi?id=8281; this change fixes it by adding memoization. Differential Revision: https://reviews.llvm.org/D6594	2021-02-19 12:44:17 -08:00

Author

SHA1

Message

Date

Eli Friedman

2a2847823f

[ConstantFold] Get rid of special cases for sizeof etc.

Target-dependent constant folding will fold these down to simple
constants (or at least, expressions that don't involve a GEP).  We don't
need heroics to try to optimize the form of the expression before that
happens.

Fixes https://bugs.llvm.org/show_bug.cgi?id=51232 .

Differential Revision: https://reviews.llvm.org/D107116

2021-07-31 13:20:47 -07:00

Tim Shen

a0757d8ebd

Patch by @wecing (Chenguang Wang).

The current getFoldedSizeOf() implementation uses naive recursion, which
could be really slow when the input structure type is too complex.

This issue was first brought up in
http://llvm.org/bugs/show_bug.cgi?id=8281; this change fixes it by
adding memoization.

Differential Revision: https://reviews.llvm.org/D6594

2021-02-19 12:44:17 -08:00

2 Commits