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Add a method useful for decimating vectors.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27269 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-03-31 00:28:23 +00:00
parent 8768bf6ee3
commit 00cc494595
1 changed files with 10 additions and 0 deletions
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10
include/llvm/Target/TargetLowering.h
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@ -173,6 +173,16 @@ public:
return TransformToType[VT];
}
/// getPackedTypeBreakdown - Packed types are broken down into some number of
/// legal scalar types. For example, <8 x float> maps to 2 MVT::v2f32 values
/// with Altivec or SSE1, or 8 promoted MVT::f64 values with the X86 FP stack.
/// Similarly, <2 x long> turns into 4 MVT::i32 values with both PPC and X86.
///
/// This method returns the number and type of the resultant breakdown.
///
MVT::ValueType getPackedTypeBreakdown(const PackedType *PTy,
unsigned &NE) const;
typedef std::vector<double>::const_iterator legal_fpimm_iterator;
legal_fpimm_iterator legal_fpimm_begin() const {
return LegalFPImmediates.begin();