diff options
| author | Thomas Lively <tlively@google.com> | 2018-08-21 21:03:18 +0000 |
|---|---|---|
| committer | Thomas Lively <tlively@google.com> | 2018-08-21 21:03:18 +0000 |
| commit | 22442924a8d1b32473fcfa56f9421b8ae58f7b8b (patch) | |
| tree | 1994d3778485401a3d7f03f54944edeae11826c4 /llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp | |
| parent | 61aaa3504f091dfc37bae4b1fb052c4685b236a2 (diff) | |
| download | bcm5719-llvm-22442924a8d1b32473fcfa56f9421b8ae58f7b8b.tar.gz bcm5719-llvm-22442924a8d1b32473fcfa56f9421b8ae58f7b8b.zip | |
[WebAssembly] v128.const
Summary:
This CL implements v128.const for each vector type. New operand types
are added to ensure the vector contents can be serialized without LEB
encoding. Tests are added for instruction selection, encoding,
assembly and disassembly.
Reviewers: aheejin, dschuff, aardappel
Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D50873
llvm-svn: 340336
Diffstat (limited to 'llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp index 417912604e0..bff074d987c 100644 --- a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp +++ b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp @@ -90,17 +90,34 @@ void WebAssemblyMCCodeEmitter::encodeInstruction( const MCOperandInfo &Info = Desc.OpInfo[i]; LLVM_DEBUG(dbgs() << "Encoding immediate: type=" << int(Info.OperandType) << "\n"); - if (Info.OperandType == WebAssembly::OPERAND_I32IMM) { + switch (Info.OperandType) { + case WebAssembly::OPERAND_I32IMM: encodeSLEB128(int32_t(MO.getImm()), OS); - } else if (Info.OperandType == WebAssembly::OPERAND_OFFSET32) { + break; + case WebAssembly::OPERAND_OFFSET32: encodeULEB128(uint32_t(MO.getImm()), OS); - } else if (Info.OperandType == WebAssembly::OPERAND_I64IMM) { + break; + case WebAssembly::OPERAND_I64IMM: encodeSLEB128(int64_t(MO.getImm()), OS); - } else if (Info.OperandType == WebAssembly::OPERAND_GLOBAL) { - llvm_unreachable("wasm globals should only be accessed symbolicly"); - } else if (Info.OperandType == WebAssembly::OPERAND_SIGNATURE) { + break; + case WebAssembly::OPERAND_SIGNATURE: OS << uint8_t(MO.getImm()); - } else { + break; + case WebAssembly::OPERAND_VEC_I8IMM: + support::endian::write<uint8_t>(OS, MO.getImm(), support::little); + break; + case WebAssembly::OPERAND_VEC_I16IMM: + support::endian::write<uint16_t>(OS, MO.getImm(), support::little); + break; + case WebAssembly::OPERAND_VEC_I32IMM: + support::endian::write<uint32_t>(OS, MO.getImm(), support::little); + break; + case WebAssembly::OPERAND_VEC_I64IMM: + support::endian::write<uint64_t>(OS, MO.getImm(), support::little); + break; + case WebAssembly::OPERAND_GLOBAL: + llvm_unreachable("wasm globals should only be accessed symbolicly"); + default: encodeULEB128(uint64_t(MO.getImm()), OS); } } else { |
