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FCmpInst predicates UNO, ORD, FALSE, and TRUE are commutative.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56243 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-09-16 16:44:00 +00:00
parent 10dd39b1e8
commit 793df075c9
1 changed files with 10 additions and 4 deletions
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14
include/llvm/Instructions.h
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@ -807,16 +807,22 @@ public:
"Invalid operand types for FCmp instruction");
}
/// This also tests for commutativity. If isEquality() returns true then
/// the predicate is also commutative. Only the equality predicates are
/// commutative.
/// @returns true if the predicate of this instruction is EQ or NE.
/// @brief Determine if this is an equality predicate.
bool isEquality() const {
return SubclassData == FCMP_OEQ || SubclassData == FCMP_ONE ||
SubclassData == FCMP_UEQ || SubclassData == FCMP_UNE;
}
bool isCommutative() const { return isEquality(); }
/// @returns true if the predicate of this instruction is commutative.
/// @brief Determine if this is a commutative predicate.
bool isCommutative() const {
return isEquality() ||
SubclassData == FCMP_FALSE ||
SubclassData == FCMP_TRUE ||
SubclassData == FCMP_ORD ||
SubclassData == FCMP_UNO;
}
/// @returns true if the predicate is relational (not EQ or NE).
/// @brief Determine if this a relational predicate.