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Extend the vcmp/fcmp LLVM IR instructions to take vectors as arguments

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and, if so, to return a vector of boolean as a result;

Extend the select LLVM IR instruction to allow you to specify a result
type which is a vector of boolean, in which case the result will be an
element-wise selection instead of choosing one vector or the other; and

Update LangRef.html to describe these changes.

This patch was contributed by Preston Gurd!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55969 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-09-09 01:02:47 +00:00
parent 3eb594013f
commit f72fb679ef
10 changed files with 181 additions and 47 deletions
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29
lib/AsmParser/llvmAsmParser.y
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@@ -1102,7 +1102,7 @@ Module *llvm::RunVMAsmParser(llvm::MemoryBuffer *MB) {
%token <BinaryOpVal> ADD SUB MUL UDIV SDIV FDIV UREM SREM FREM AND OR XOR
%token <BinaryOpVal> SHL LSHR ASHR
%token <OtherOpVal> ICMP FCMP VICMP VFCMP
%token <OtherOpVal> ICMP FCMP VICMP VFCMP
%type <IPredicate> IPredicates
%type <FPredicate> FPredicates
%token EQ NE SLT SGT SLE SGE ULT UGT ULE UGE
@@ -3097,8 +3097,6 @@ InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
| ICMP IPredicates Types ValueRef ',' ValueRef {
if (!UpRefs.empty())
GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
if (isa<VectorType>((*$3).get()))
GEN_ERROR("Vector types not supported by icmp instruction");
Value* tmpVal1 = getVal(*$3, $4);
CHECK_FOR_ERROR
Value* tmpVal2 = getVal(*$3, $6);
@@ -3111,8 +3109,6 @@ InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
| FCMP FPredicates Types ValueRef ',' ValueRef {
if (!UpRefs.empty())
GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
if (isa<VectorType>((*$3).get()))
GEN_ERROR("Vector types not supported by fcmp instruction");
Value* tmpVal1 = getVal(*$3, $4);
CHECK_FOR_ERROR
Value* tmpVal2 = getVal(*$3, $6);
@@ -3133,7 +3129,7 @@ InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
CHECK_FOR_ERROR
$$ = CmpInst::Create($1, $2, tmpVal1, tmpVal2);
if ($$ == 0)
GEN_ERROR("icmp operator returned null");
GEN_ERROR("vicmp operator returned null");
delete $3;
}
| VFCMP FPredicates Types ValueRef ',' ValueRef {
@@ -3147,7 +3143,7 @@ InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
CHECK_FOR_ERROR
$$ = CmpInst::Create($1, $2, tmpVal1, tmpVal2);
if ($$ == 0)
GEN_ERROR("fcmp operator returned null");
GEN_ERROR("vfcmp operator returned null");
delete $3;
}
| CastOps ResolvedVal TO Types {
@@ -3163,10 +3159,23 @@ InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
delete $4;
}
| SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
if ($2->getType() != Type::Int1Ty)
GEN_ERROR("select condition must be boolean");
if (isa<VectorType>($2->getType())) {
// vector select
if (!isa<VectorType>($4->getType())
|| !isa<VectorType>($6->getType()) )
GEN_ERROR("vector select value types must be vector types");
const VectorType* cond_type = cast<VectorType>($2->getType());
const VectorType* select_type = cast<VectorType>($4->getType());
if (cond_type->getElementType() != Type::Int1Ty)
GEN_ERROR("vector select condition element type must be boolean");
if (cond_type->getNumElements() != select_type->getNumElements())
GEN_ERROR("vector select number of elements must be the same");
} else {
if ($2->getType() != Type::Int1Ty)
GEN_ERROR("select condition must be boolean");
}
if ($4->getType() != $6->getType())
GEN_ERROR("select value types should match");
GEN_ERROR("select value types must match");
$$ = SelectInst::Create($2, $4, $6);
CHECK_FOR_ERROR
}