bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	Reapply: [DebugInfo] Correctly handle salvaged casts and split fragments at ISel	stozer	2019-12-18	1	-0/+72
\| \| \| \| \| \| \| \|	This reverts commit 1f3dd83cc1f2b8f72b9d59e2b4221b12fb7f9a95, reapplying commit bb1b0bc4e57428ce364d3d6c075ff03cb8973462. The original commit failed on some builds seemingly due to the use of a bracketed constructor with an std::array, i.e. `std::array<> arr({...})`.
*	Revert "[DebugInfo] Correctly handle salvaged casts and split fragments at ISel"	stozer	2019-12-18	1	-72/+0
\| \| \| \| \| \|	Reverted due to build failure on windows bots. This reverts commit bb1b0bc4e57428ce364d3d6c075ff03cb8973462.
*	[DebugInfo] Correctly handle salvaged casts and split fragments at ISel	stozer	2019-12-18	1	-0/+72
	Previously, LLVM had no functional way of performing casts inside of a DIExpression(), which made salvaging cast instructions other than Noop casts impossible. This patch enables the salvaging of casts by using the DW_OP_LLVM_convert operator for SExt and Trunc instructions. There is another issue which is exposed by this fix, in which fragment DIExpressions (which are preserved more readily by this patch) for values that must be split across registers in ISel trigger an assertion, as the 'split' fragments extend beyond the bounds of the fragment DIExpression causing an error. This patch also fixes this issue by checking the fragment status of DIExpressions which are to be split, and dropping fragments that are invalid.