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Allow parsing select instruction and constant expr 

llvm-svn: 12313
This commit is contained in:
Chris Lattner 2004-03-12 05:51:36 +00:00
parent 26cca63a7e
commit 6536f0c35f
2 changed files with 16 additions and 1 deletions
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1
llvm/lib/AsmParser/Lexer.l
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@ -234,6 +234,7 @@ setge { RET_TOK(BinaryOpVal, SetGE, SETGE); }
phi { RET_TOK(OtherOpVal, PHI, PHI_TOK); }
call { RET_TOK(OtherOpVal, Call, CALL); }
cast { RET_TOK(OtherOpVal, Cast, CAST); }
select { RET_TOK(OtherOpVal, Select, SELECT); }
shl { RET_TOK(OtherOpVal, Shl, SHL); }
shr { RET_TOK(OtherOpVal, Shr, SHR); }
va_arg { return VA_ARG; /* FIXME: OBSOLETE */}

16
llvm/lib/AsmParser/llvmAsmParser.y
View File

@ -876,7 +876,7 @@ using namespace llvm;
// Other Operators
%type <OtherOpVal> ShiftOps
%token <OtherOpVal> PHI_TOK CALL CAST SHL SHR VAARG VANEXT
%token <OtherOpVal> PHI_TOK CALL CAST SELECT SHL SHR VAARG VANEXT
%token VA_ARG // FIXME: OBSOLETE
%start Module
@ -1251,6 +1251,13 @@ ConstExpr: CAST '(' ConstVal TO Types ')' {
$$ = ConstantExpr::getGetElementPtr($3, IdxVec);
}
| SELECT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
if ($3->getType() != Type::BoolTy)
ThrowException("Select condition must be of boolean type!");
if ($5->getType() != $7->getType())
ThrowException("Select operand types must match!");
$$ = ConstantExpr::getSelect($3, $5, $7);
}
| BinaryOps '(' ConstVal ',' ConstVal ')' {
if ($3->getType() != $5->getType())
ThrowException("Binary operator types must match!");
@ -1802,6 +1809,13 @@ InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
$$ = new CastInst($2, *$4);
delete $4;
}
| SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
if ($2->getType() != Type::BoolTy)
ThrowException("select condition must be boolean!");
if ($4->getType() != $6->getType())
ThrowException("select value types should match!");
$$ = new SelectInst($2, $4, $6);
}
| VA_ARG ResolvedVal ',' Types {
// FIXME: This is emulation code for an obsolete syntax. This should be
// removed at some point.