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author | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-08-23 10:27:02 +0000 |
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committer | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-08-23 10:27:02 +0000 |
commit | a8a7099c1849fcbb4a68642a292fd0250aa46505 (patch) | |
tree | f3f31347a082cd803e6a47a6e8b57294ac55748d /lib/CodeGen/BasicTargetTransformInfo.cpp | |
parent | 287c84a0b45cc826b1200f4cf4be3547d2fcd69c (diff) | |
download | external_llvm-a8a7099c1849fcbb4a68642a292fd0250aa46505.zip external_llvm-a8a7099c1849fcbb4a68642a292fd0250aa46505.tar.gz external_llvm-a8a7099c1849fcbb4a68642a292fd0250aa46505.tar.bz2 |
Turn MipsOptimizeMathLibCalls into a target-independent scalar transform
...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
Diffstat (limited to 'lib/CodeGen/BasicTargetTransformInfo.cpp')
-rw-r--r-- | lib/CodeGen/BasicTargetTransformInfo.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/CodeGen/BasicTargetTransformInfo.cpp b/lib/CodeGen/BasicTargetTransformInfo.cpp index 0883ab0..d5340e6 100644 --- a/lib/CodeGen/BasicTargetTransformInfo.cpp +++ b/lib/CodeGen/BasicTargetTransformInfo.cpp @@ -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. |