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fix the !eq operator in tblgen to return a bit instead of an int.

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Use this to make the X86 and ARM targets set isCodeGenOnly=1 
automatically for their instructions that have Format=Pseudo,
resolving a hack in tblgen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117862 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-10-31 19:22:57 +00:00
parent a4a3a5e3c2
commit 150d20e8fc
5 changed files with 8 additions and 17 deletions
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2
docs/TableGenFundamentals.html
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@ -422,7 +422,7 @@ class. This operation is analogous to $(foreach) in GNU make.</dd>
<dd>'b' if the result of 'int' or 'bit' operator 'a' is nonzero,
'c' otherwise.</dd>
<dt><tt>!eq(a,b)</tt></dt>
<dd>Integer one if string a is equal to string b, zero otherwise. This
<dd>'bit 1' if string a is equal to string b, 0 otherwise. This
only operates on string, int and bit objects. Use !cast&lt;string&gt; to
compare other types of objects.</dd>
</dl>

3
lib/Target/ARM/ARMInstrFormats.td
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@ -203,6 +203,9 @@ class InstTemplate<AddrMode am, SizeFlagVal sz, IndexMode im,
Domain D = d;
bit isUnaryDataProc = 0;
bit canXformTo16Bit = 0;
// If this is a pseudo instruction, mark it isCodeGenOnly.
let isCodeGenOnly = !eq(!cast<string>(f), "Pseudo");
// The layout of TSFlags should be kept in sync with ARMBaseInstrInfo.h.
let TSFlags{4-0} = AM.Value;

3
lib/Target/X86/X86InstrFormats.td
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@ -125,6 +125,9 @@ class X86Inst<bits<8> opcod, Format f, ImmType i, dag outs, dag ins,
dag InOperandList = ins;
string AsmString = AsmStr;
// If this is a pseudo instruction, mark it isCodeGenOnly.
let isCodeGenOnly = !eq(!cast<string>(f), "Pseudo");
//
// Attributes specific to X86 instructions...
//

15
utils/TableGen/AsmMatcherEmitter.cpp
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@ -223,21 +223,6 @@ static bool IsAssemblerInstruction(StringRef Name,
if (CGI.TheDef->getValueAsBit("isCodeGenOnly"))
return false;
// Ignore pseudo ops.
//
// FIXME: This is a hack [for X86]; can we convert these instructions to set
// the "codegen only" bit instead?
if (const RecordVal *Form = CGI.TheDef->getValue("Form"))
if (Form->getValue()->getAsString() == "Pseudo")
return false;
// FIXME: This is a hack [for ARM]; can we convert these instructions to set
// the "codegen only" bit instead?
if (const RecordVal *Form = CGI.TheDef->getValue("F"))
if (Form->getValue()->getAsString() == "Pseudo")
return false;
// Ignore "Int_*" and "*_Int" instructions, which are internal aliases.
//
// FIXME: This is a total hack.

2
utils/TableGen/TGParser.cpp
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@ -812,7 +812,7 @@ Init *TGParser::ParseOperation(Record *CurRec) {
case tgtok::XSRA: Code = BinOpInit::SRA; Type = new IntRecTy(); break;
case tgtok::XSRL: Code = BinOpInit::SRL; Type = new IntRecTy(); break;
case tgtok::XSHL: Code = BinOpInit::SHL; Type = new IntRecTy(); break;
case tgtok::XEq: Code = BinOpInit::EQ; Type = new IntRecTy(); break;
case tgtok::XEq: Code = BinOpInit::EQ; Type = new BitRecTy(); break;
case tgtok::XStrConcat:
Code = BinOpInit::STRCONCAT;
Type = new StringRecTy();