3 Commits

Author	SHA1	Message	Date
Tom Eccles	81a79ee446	[mlir] Add function for checking if a block is inside a loop ... This function returns whether a block is nested inside of a loop. There can be three kinds of loop: 1) The block is nested inside of a LoopLikeOpInterface 2) The block is nested inside another block which is in a loop 3) There is a cycle in the control flow graph This will be useful for Flang's stack arrays pass, which moves array allocations from the heap to the stack. Special handling is needed when allocations occur inside of loops to ensure additional stack space is not allocated on each loop iteration. Differential Revision: https://reviews.llvm.org/D141401	2023-02-10 16:14:17 +00:00
Kiran Chandramohan	bacf1aa3c0	Revert "[mlir] Add function for checking if a block is inside a loop" ... Reverting since the shared library builds are failing. This reverts commit dcee187522c6e2e1a56ffc9b58bfe11c6ac44662.	2023-02-09 18:36:28 +00:00
Tom Eccles	dcee187522	[mlir] Add function for checking if a block is inside a loop ... This function returns whether a block is nested inside of a loop. There can be three kinds of loop: 1) The block is nested inside of a LoopLikeOpInterface 2) The block is nested inside another block which is in a loop 3) There is a cycle in the control flow graph This will be useful for Flang's stack arrays pass, which moves array allocations from the heap to the stack. Special handling is needed when allocations occur inside of loops to ensure additional stack space is not allocated on each loop iteration. Differential Revision: https://reviews.llvm.org/D141401	2023-02-09 15:18:54 +00:00