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| author | Dan Gohman <gohman@apple.com> | 2011-12-17 00:04:22 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2011-12-17 00:04:22 +0000 |
| commit | ce16339930a2b03e53b4e6399ef59c092a7f2cfa (patch) | |
| tree | 8265888014a73aa5764f99d7b6bb0553066f78bc /lib/Transforms/InstCombine/InstCombineCasts.cpp | |
| parent | 2e1b0c0cd9fab8f1841e1039cf39dcceeba70f73 (diff) | |
| download | external_llvm-ce16339930a2b03e53b4e6399ef59c092a7f2cfa.zip external_llvm-ce16339930a2b03e53b4e6399ef59c092a7f2cfa.tar.gz external_llvm-ce16339930a2b03e53b4e6399ef59c092a7f2cfa.tar.bz2 | |
The powers that be have decided that LLVM IR should now support 16-bit
"half precision" floating-point with a first-class type.
This patch adds basic IR support (but not codegen support).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146786 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/InstCombine/InstCombineCasts.cpp')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineCasts.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineCasts.cpp b/lib/Transforms/InstCombine/InstCombineCasts.cpp index 46e4acd..49a498f 100644 --- a/lib/Transforms/InstCombine/InstCombineCasts.cpp +++ b/lib/Transforms/InstCombine/InstCombineCasts.cpp @@ -1160,6 +1160,9 @@ static Value *LookThroughFPExtensions(Value *V) { if (ConstantFP *CFP = dyn_cast<ConstantFP>(V)) { if (CFP->getType() == Type::getPPC_FP128Ty(V->getContext())) return V; // No constant folding of this. + // See if the value can be truncated to half and then reextended. + if (Value *V = FitsInFPType(CFP, APFloat::IEEEhalf)) + return V; // See if the value can be truncated to float and then reextended. if (Value *V = FitsInFPType(CFP, APFloat::IEEEsingle)) return V; |