llvm/lib
Hal Finkel 66d1fa6f4b Add a llvm.copysign intrinsic
This adds a llvm.copysign intrinsic; We already have Libfunc recognition for
copysign (which is turned into the FCOPYSIGN SDAG node). In order to
autovectorize calls to copysign in the loop vectorizer, we need a corresponding
intrinsic as well.

In addition to the expected changes to the language reference, the loop
vectorizer, BasicTTI, and the SDAG builder (the intrinsic is transformed into
an FCOPYSIGN node, just like the function call), this also adds FCOPYSIGN to a
few lists in LegalizeVector{Ops,Types} so that vector copysigns can be
expanded.

In TargetLoweringBase::initActions, I've made the default action for FCOPYSIGN
be Expand for vector types. This seems correct for all in-tree targets, and I
think is the right thing to do because, previously, there was no way to generate
vector-values FCOPYSIGN nodes (and most targets don't specify an action for
vector-typed FCOPYSIGN).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188728 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-19 23:35:46 +00:00
..
Analysis Fix assert with GEP ptr vector indexing structs 2013-08-19 21:43:16 +00:00
AsmParser
Bitcode
CodeGen Add a llvm.copysign intrinsic 2013-08-19 23:35:46 +00:00
DebugInfo llvm-dwarfdump: Do not include address offsets for attributes, only for tags 2013-08-19 03:36:23 +00:00
ExecutionEngine Adding PIC support for ELF on x86_64 platforms 2013-08-19 23:27:43 +00:00
IR Introduce non-const overloads for GlobalAlias::{get,resolve}AliasedGlobal. 2013-08-19 23:13:33 +00:00
IRReader
Linker
MC
Object
Option
Support
TableGen
Target Add a llvm.copysign intrinsic 2013-08-19 23:35:46 +00:00
Transforms Add a llvm.copysign intrinsic 2013-08-19 23:35:46 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile