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Clarify the use of getValue/getSExtValue/getZExtValue and add the new

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APInt constructor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34811 91177308-0d34-0410-b5e6-96231b3b80d8
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Reid Spencer 2007-03-01 21:05:33 +00:00
parent a0e0129e3f
commit 97b4ee34ed
1 changed files with 14 additions and 4 deletions
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docs/ProgrammersManual.html
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@ -2621,10 +2621,20 @@ a subclass, which represents the address of a global variable or function.
<li>ConstantInt : This subclass of Constant represents an integer constant of
any width.
<ul>
<li><tt>int64_t getSExtValue() const</tt>: Returns the underlying value of
this constant as a sign extended signed integer value.</li>
<li><tt>uint64_t getZExtValue() const</tt>: Returns the underlying value
of this constant as a zero extended unsigned integer value.</li>
<li><tt>const APInt&amp; getValue() const</tt>: Returns the underlying
value of this constant, an APInt value.</li>
<li><tt>int64_t getSExtValue() const</tt>: Converts the underlying APInt
value to an int64_t via sign extension. If the value (not the bit width)
of the APInt is too large to fit in an int64_t, an assertion will result.
For this reason, use of this method is discouraged.</li>
<li><tt>uint64_t getZExtValue() const</tt>: Converts the underlying APInt
value to a uint64_t via zero extension. IF the value (not the bit width)
of the APInt is too large to fit in a uint64_t, an assertion will result.
For this reason, use of this method is discourage.</li>
<li><tt>static ConstantInt* get(const APInt&amp; Val)</tt>: Returns the
ConstantInt object that represents the value provided by <tt>Val</tt>.
The type is implied as the IntegerType that corresponds to the bit width
of <tt>Val</tt>.</li>
<li><tt>static ConstantInt* get(const Type *Ty, uint64_t Val)</tt>:
Returns the ConstantInt object that represents the value provided by
<tt>Val</tt> for integer type <tt>Ty</tt>.</li>