bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	[LegalizeVectorTypes] Allow single loads and stores for more short vectors	Ulrich Weigand	2015-05-05	1	-2/+1
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	When lowering a load or store for TypeWidenVector, the type legalizer would use a single load or store if the associated integer type was legal. E.g. it would load a v4i8 as an i32 if i32 was legal. This patch extends that behavior to promoted integers as well as legal ones. If the integer type for the full vector width is TypePromoteInteger, the element type is going to be TypePromoteInteger too, and it's still better to use a single promoting load or truncating store rather than N individual promoting loads or truncating stores. E.g. if you have a v2i8 on a target where i16 is promoted to i32, it's better to load the v2i8 as an i16 rather than load both i8s individually. Original patch by Richard Sandiford. llvm-svn: 236528
*	[SystemZ] Handle sub-128 vectors	Ulrich Weigand	2015-05-05	1	-0/+106
	The ABI allows sub-128 vectors to be passed and returned in registers, with the vector occupying the upper part of a register. We therefore want to legalize those types by widening the vector rather than promoting the elements. The patch includes some simple tests for sub-128 vectors and also tests that we can recognize various pack sequences, some of which use sub-128 vectors as temporary results. One of these forms is based on the pack sequences generated by llvmpipe when no intrinsics are used. Signed unpacks are recognized as BUILD_VECTORs whose elements are individually sign-extended. Unsigned unpacks can have the equivalent form with zero extension, but they also occur as shuffles in which some elements are zero. Based on a patch by Richard Sandiford. llvm-svn: 236525