3 Commits

Author	SHA1	Message	Date
Krzysztof Parzyszek	7793ddb043	[Hexagon] Optimize stack slot spills ... Replace spills to memory with spills to registers, if possible. This applies mostly to predicate registers (both scalar and vector), since they are very limited in number. A spill of a predicate register may happen even if there is a general-purpose register available. In cases like this the stack spill/reload may be eliminated completely. This optimization will consider all stack objects, regardless of where they came from and try to match the live range of the stack slot with a dead range of a register from an appropriate register class. llvm-svn: 260758	2016-02-12 22:53:35 +00:00
Krzysztof Parzyszek	996ad1fa00	[Hexagon] Replace expansion of spill pseudo-instructions in frame lowering ... Rewrite the code to handle all pseudo-instructions in a single pass. This temporarily reverts spill slot optimization that used general- purpose registers to hold values of spilled predicate registers. llvm-svn: 260696	2016-02-12 18:19:53 +00:00
Krzysztof Parzyszek	7b413c6c63	[Hexagon] Use general purpose registers to spill pred/mod registers into ... Patch by Tobias Edler Von Koch. llvm-svn: 258527	2016-01-22 19:15:58 +00:00