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Make the popcnt support enums and methods have more clear names and

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follow the conding conventions regarding enumerating a set of "kinds" of
things.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171687 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2013-01-07 03:16:03 +00:00
parent be04929f7f
commit d1b8ef97c4
4 changed files with 23 additions and 21 deletions
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26
include/llvm/Analysis/TargetTransformInfo.h
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@ -70,16 +70,18 @@ public:
/// \name Scalar Target Information
/// @{
/// PopcntHwSupport - Hardware support for population count. Compared to the
/// SW implementation, HW support is supposed to significantly boost the
/// performance when the population is dense, and it may or may not degrade
/// performance if the population is sparse. A HW support is considered as
/// "Fast" if it can outperform, or is on a par with, SW implementaion when
/// the population is sparse; otherwise, it is considered as "Slow".
enum PopcntHwSupport {
None,
Fast,
Slow
/// \brief Flags indicating the kind of support for population count.
///
/// Compared to the SW implementation, HW support is supposed to
/// significantly boost the performance when the population is dense, and it
/// may or may not degrade performance if the population is sparse. A HW
/// support is considered as "Fast" if it can outperform, or is on a par
/// with, SW implementaion when the population is sparse; otherwise, it is
/// considered as "Slow".
enum PopcntSupportKind {
PSK_Software,
PSK_SlowHardware,
PSK_FastHardware
};
/// isLegalAddImmediate - Return true if the specified immediate is legal
@ -121,8 +123,8 @@ public:
/// lookup tables for the target.
virtual bool shouldBuildLookupTables() const;
/// getPopcntHwSupport - Return hardware support for population count.
virtual PopcntHwSupport getPopcntHwSupport(unsigned IntTyWidthInBit) const;
/// getPopcntSupport - Return hardware support for population count.
virtual PopcntSupportKind getPopcntSupport(unsigned IntTyWidthInBit) const;
/// getIntImmCost - Return the expected cost of materializing the given
/// integer immediate of the specified type.