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| author | Ties Stuij <ties.stuij@arm.com> | 2020-03-31 23:49:38 +0100 |
|---|---|---|
| committer | Ties Stuij <ties.stuij@arm.com> | 2020-05-15 14:43:43 +0100 |
| commit | 8c24f33158d81d5f4b0c5d27c2f07396f0f1484b (patch) | |
| tree | b78f8dec4d437ddaad0c62f98ef087f19da271bf /llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | |
| parent | 7063a83a7cca45a9b12a7e447c90abe681f6ebaf (diff) | |
| download | llvm-8c24f33158d81d5f4b0c5d27c2f07396f0f1484b.zip llvm-8c24f33158d81d5f4b0c5d27c2f07396f0f1484b.tar.gz llvm-8c24f33158d81d5f4b0c5d27c2f07396f0f1484b.tar.bz2 | |
[IR][BFloat] Add BFloat IR type
Summary:
The BFloat IR type is introduced to provide support for, initially, the BFloat16
datatype introduced with the Armv8.6 architecture (optional from Armv8.2
onwards). It has an 8-bit exponent and a 7-bit mantissa and behaves like an IEEE
754 floating point IR type.
This is part of a patch series upstreaming Armv8.6 features. Subsequent patches
will upstream intrinsics support and C-lang support for BFloat.
Reviewers: SjoerdMeijer, rjmccall, rsmith, liutianle, RKSimon, craig.topper, jfb, LukeGeeson, sdesmalen, deadalnix, ctetreau
Subscribers: hiraditya, llvm-commits, danielkiss, arphaman, kristof.beyls, dexonsmith
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D78190
Diffstat (limited to 'llvm/lib/Bitcode/Writer/BitcodeWriter.cpp')
| -rw-r--r-- | llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp index 9e389fc6..5b62a47 100644 --- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -881,6 +881,7 @@ void ModuleBitcodeWriter::writeTypeTable() { switch (T->getTypeID()) { case Type::VoidTyID: Code = bitc::TYPE_CODE_VOID; break; case Type::HalfTyID: Code = bitc::TYPE_CODE_HALF; break; + case Type::BFloatTyID: Code = bitc::TYPE_CODE_BFLOAT; break; case Type::FloatTyID: Code = bitc::TYPE_CODE_FLOAT; break; case Type::DoubleTyID: Code = bitc::TYPE_CODE_DOUBLE; break; case Type::X86_FP80TyID: Code = bitc::TYPE_CODE_X86_FP80; break; @@ -2387,7 +2388,8 @@ void ModuleBitcodeWriter::writeConstants(unsigned FirstVal, unsigned LastVal, } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(C)) { Code = bitc::CST_CODE_FLOAT; Type *Ty = CFP->getType(); - if (Ty->isHalfTy() || Ty->isFloatTy() || Ty->isDoubleTy()) { + if (Ty->isHalfTy() || Ty->isBFloatTy() || Ty->isFloatTy() || + Ty->isDoubleTy()) { Record.push_back(CFP->getValueAPF().bitcastToAPInt().getZExtValue()); } else if (Ty->isX86_FP80Ty()) { // api needed to prevent premature destruction |