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ARM add some pre-UAL VFP mnemonics for convenience when porting old code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146296 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -5308,6 +5308,11 @@ def : Pat<(v2f64 (bitconvert (v4f32 QPR:$src))), (v2f64 QPR:$src)>;
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//===----------------------------------------------------------------------===//
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// Assembler aliases
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//
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def : VFP2InstAlias<"fmdhr${p} $Dd, $Rn",
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(VSETLNi32 DPR:$Dd, GPR:$Rn, 1, pred:$p)>;
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def : VFP2InstAlias<"fmdlr${p} $Dd, $Rn",
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(VSETLNi32 DPR:$Dd, GPR:$Rn, 0, pred:$p)>;
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// VADD two-operand aliases.
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def : NEONInstAlias<"vadd${p}.i8 $Vdn, $Vm",
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@ -1161,15 +1161,26 @@ def FCONSTS : VFPAI<(outs SPR:$Sd), (ins vfp_f32imm:$imm),
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// Assembler aliases.
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//
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class VFP2MnemonicAlias<string src, string dst> : MnemonicAlias<src, dst>,
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Requires<[HasVFP2]>;
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// A few mnemnoic aliases for pre-unifixed syntax. We don't guarantee to
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// support them all, but supporting at least some of the basics is
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// good to be friendly.
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def : MnemonicAlias<"flds", "vldr">;
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def : MnemonicAlias<"fldd", "vldr">;
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def : MnemonicAlias<"fmrs", "vmov">;
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def : MnemonicAlias<"fmsr", "vmov">;
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def : MnemonicAlias<"fsqrts", "vsqrt">;
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def : MnemonicAlias<"fsqrtd", "vsqrt">;
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def : VFP2MnemonicAlias<"flds", "vldr">;
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def : VFP2MnemonicAlias<"fldd", "vldr">;
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def : VFP2MnemonicAlias<"fmrs", "vmov">;
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def : VFP2MnemonicAlias<"fmsr", "vmov">;
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def : VFP2MnemonicAlias<"fsqrts", "vsqrt">;
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def : VFP2MnemonicAlias<"fsqrtd", "vsqrt">;
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def : VFP2MnemonicAlias<"fadds", "vadd.f32">;
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def : VFP2MnemonicAlias<"faddd", "vadd.f64">;
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def : VFP2MnemonicAlias<"fmrdd", "vmov">;
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def : VFP2MnemonicAlias<"fmrds", "vmov">;
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def : VFP2MnemonicAlias<"fmrrd", "vmov">;
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def : VFP2MnemonicAlias<"fmdrr", "vmov">;
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def : VFP2MnemonicAlias<"fmuld", "vmul.f64">;
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def : VFP2MnemonicAlias<"fnegs", "vneg.f32">;
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def : VFP2MnemonicAlias<"fnegd", "vneg.f64">;
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def : VFP2InstAlias<"fmstat${p}", (FMSTAT pred:$p)>;
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@ -4523,9 +4523,18 @@ static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) {
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return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm");
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}
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static void applyMnemonicAliases(StringRef &Mnemonic, unsigned Features);
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/// Parse an arm instruction mnemonic followed by its operands.
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bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
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SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
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// Apply mnemonic aliases before doing anything else, as the destination
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// mnemnonic may include suffices and we want to handle them normally.
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// The generic tblgen'erated code does this later, at the start of
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// MatchInstructionImpl(), but that's too late for aliases that include
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// any sort of suffix.
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unsigned AvailableFeatures = getAvailableFeatures();
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applyMnemonicAliases(Name, AvailableFeatures);
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// Create the leading tokens for the mnemonic, split by '.' characters.
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size_t Start = 0, Next = Name.find('.');
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StringRef Mnemonic = Name.slice(Start, Next);
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