3 Commits

Author SHA1 Message Date
Sumanth Gundapaneni 7a600d312f [Hexagon] New HVX target features.
This patch lets the llvm tools handle the new HVX target features that
are added by frontend (clang). The target-features are of the form
"hvx-length64b" for 64 Byte HVX mode, "hvx-length128b" for 128 Byte mode HVX.
"hvx-double" is an alias to "hvx-length128b" and is soon will be deprecated.
The hvx version target feature is upgated form "+hvx" to "+hvxv{version_number}.
Eg: "+hvxv62"

For the correct HVX code generation, the user must use the following
target features.
For 64B mode: "+hvxv62" "+hvx-length64b"
For 128B mode: "+hvxv62" "+hvx-length128b"

Clang picks a default length if none is specified. If for some reason,
no hvx-length is specified to llvm, the compilation will bail out.
There is a corresponding clang patch.

Differential Revision: https://reviews.llvm.org/D38851


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316101 91177308-0d34-0410-b5e6-96231b3b80d8
2017-10-18 18:07:07 +00:00
Sumanth Gundapaneni 0857e7fe7b [SimplifyCFG] Make the no-jump-tables attribute also disable switch lookup tables
Differential Revision: https://reviews.llvm.org/D35579


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@309444 91177308-0d34-0410-b5e6-96231b3b80d8
2017-07-28 22:25:40 +00:00
Sumanth Gundapaneni e33b6de6d6 [Hexagon] Guard the generation of lookup table
The llvm flag "-hexagon-emit-lookup-tables" guards the generation
of lookup table generated from a switch statement.
Differential Revision: https://reviews.llvm.org/D34819


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@306877 91177308-0d34-0410-b5e6-96231b3b80d8
2017-06-30 20:54:24 +00:00