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Turn MipsOptimizeMathLibCalls into a target-independent scalar transform

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...so that it can be used for z too.  Most of the code is the same.
The only real change is to use TargetTransformInfo to test when a sqrt
instruction is available.

The pass is opt-in because at the moment it only handles sqrt.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189097 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Sandiford
2013-08-23 10:27:02 +00:00
parent 287c84a0b4
commit a8a7099c18
16 changed files with 109 additions and 55 deletions
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7
lib/CodeGen/BasicTargetTransformInfo.cpp
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@ -83,6 +83,7 @@ public:
virtual unsigned getJumpBufAlignment() const;
virtual unsigned getJumpBufSize() const;
virtual bool shouldBuildLookupTables() const;
virtual bool haveFastSqrt(Type *Ty) const;
/// @}
@ -182,6 +183,12 @@ bool BasicTTI::shouldBuildLookupTables() const {
TLI->isOperationLegalOrCustom(ISD::BRIND, MVT::Other));
}
bool BasicTTI::haveFastSqrt(Type *Ty) const {
const TargetLoweringBase *TLI = getTLI();
EVT VT = TLI->getValueType(Ty);
return TLI->isTypeLegal(VT) && TLI->isOperationLegalOrCustom(ISD::FSQRT, VT);
}
//===----------------------------------------------------------------------===//
//
// Calls used by the vectorizers.