David Blaikie
296ca41b2d
Basic unit tests for PointerUnion
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188933 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-21 21:30:23 +00:00
Chris Lattner
586ea17be9
I'm told that != is not ==
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188583 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-16 22:29:44 +00:00
Chris Lattner
b282085924
allow != to compare PointerUnion, we already support ==.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188582 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-16 22:09:02 +00:00
Douglas Gregor
df6e5fb77c
Add missing #include
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181900 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-15 17:41:02 +00:00
David Blaikie
453f4f0130
Use only explicit bool conversion operators
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BitVector/SmallBitVector::reference::operator bool remain implicit since
they model more exactly a bool, rather than something else that can be
boolean tested.
The most common (non-buggy) case are where such objects are used as
return expressions in bool-returning functions or as boolean function
arguments. In those cases I've used (& added if necessary) a named
function to provide the equivalent (or sometimes negative, depending on
convenient wording) test.
One behavior change (YAMLParser) was made, though no test case is
included as I'm not sure how to reach that code path. Essentially any
comparison of llvm::yaml::document_iterators would be invalid if neither
iterator was at the end.
This helped uncover a couple of bugs in Clang - test cases provided for
those in a separate commit along with similar changes to `operator bool`
instances in Clang.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181868 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-15 07:36:59 +00:00
Argyrios Kyrtzidis
acb8d9fbe3
Eliminate redundant bitwise operations when using a llvm/ADT/PointerUnion.
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For comparison, with this code sample:
PointerUnion<int *, char *> Data;
PointerUnion<int *, char *> foo1() {
Data = new int;
return new int;
}
PointerUnion<int *, char *> foo2() {
Data = new char;
return new char;
}
Before this patch we would get:
define i64 @_Z4foo1v() uwtable ssp {
%1 = tail call noalias i8* @_Znwm(i64 4)
%2 = ptrtoint i8* %1 to i64
%3 = load i64* getelementptr inbounds (%"class.llvm::PointerUnion"* @Data, i64 0, i32 0, i32 0), align 8
%4 = and i64 %3, 1
%.masked.i = and i64 %2, -3
%5 = or i64 %4, %.masked.i
store i64 %5, i64* getelementptr inbounds (%"class.llvm::PointerUnion"* @Data, i64 0, i32 0, i32 0), align 8
%6 = tail call noalias i8* @_Znwm(i64 4)
%7 = ptrtoint i8* %6 to i64
%8 = and i64 %7, -3
ret i64 %8
}
define i64 @_Z4foo2v() uwtable ssp {
%1 = tail call noalias i8* @_Znwm(i64 1)
%2 = ptrtoint i8* %1 to i64
%3 = load i64* getelementptr inbounds (%"class.llvm::PointerUnion"* @Data, i64 0, i32 0, i32 0), align 8
%4 = and i64 %3, 1
%5 = or i64 %2, %4
%6 = or i64 %5, 2
store i64 %6, i64* getelementptr inbounds (%"class.llvm::PointerUnion"* @Data, i64 0, i32 0, i32 0), align 8
%7 = tail call noalias i8* @_Znwm(i64 1)
%8 = ptrtoint i8* %7 to i64
%9 = or i64 %8, 2
ret i64 %9
}
After the patch:
define i64 @_Z4foo1v() uwtable ssp {
%1 = tail call noalias i8* @_Znwm(i64 4)
%2 = ptrtoint i8* %1 to i64
store i64 %2, i64* getelementptr inbounds (%"class.llvm::PointerUnion"* @Data, i64 0, i32 0, i32 0), align 8
%3 = tail call noalias i8* @_Znwm(i64 4)
%4 = ptrtoint i8* %3 to i64
ret i64 %4
}
declare noalias i8* @_Znwm(i64)
define i64 @_Z4foo2v() uwtable ssp {
%1 = tail call noalias i8* @_Znwm(i64 1)
%2 = ptrtoint i8* %1 to i64
%3 = or i64 %2, 2
store i64 %3, i64* getelementptr inbounds (%"class.llvm::PointerUnion"* @Data, i64 0, i32 0, i32 0), align 8
%4 = tail call noalias i8* @_Znwm(i64 1)
%5 = ptrtoint i8* %4 to i64
%6 = or i64 %5, 2
ret i64 %6
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169147 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03 19:59:23 +00:00
Galina Kistanova
b76fb96cd6
Fixed few warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160192 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-13 21:06:54 +00:00
Douglas Gregor
87d8e60505
Add a few missing 'template' keywords
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152525 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-11 02:22:41 +00:00
Argyrios Kyrtzidis
0db235a2b0
PointerUnion::getAddrOf() does not need to be template since we can only
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use the first pointer type for it. Rename it to getAddrOfPtr1().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152106 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-06 07:14:54 +00:00
Chris Lattner
823eb1ca11
Fix an obscure bug in PointerUnion that would bite PointerUnion3/4. Basically,
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when checking isNull(), we'd pick off the sentinel bit for the outer
PointerUnion, but would not recursively convert the inner pointerunion to bool,
so if *its* sentinel bit is set, isNull() would incorrectly return false.
No testcase, because someone hit this when they were trying to refactor code
to use PointerUnion3, but they since found a better solution.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137428 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-12 04:31:38 +00:00
Argyrios Kyrtzidis
a36be82664
Try fixing mingw build.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127153 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-07 05:35:01 +00:00
Argyrios Kyrtzidis
128ccbb8e5
Do a compiler check that we use one of the types from PointerUnion[N], instead of a runtime check.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127145 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-07 01:30:20 +00:00
Argyrios Kyrtzidis
38297f5f76
Allow getting the address of the value in a PointerUnion or PointerIntPair if one is
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confident enough that he knows what he is doing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126019 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-19 03:55:58 +00:00
Ted Kremenek
8260ea5c6c
Change PointerUnionX::getFromOpaqueValue() to be declared 'static inline' instead of 'static'.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99892 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30 16:20:03 +00:00
Douglas Gregor
6a66b38846
Add a bunch of missing "template" keywords to disambiguate dependent template names. GCC eats this ill-formed code, Clang does not. I already filed PR5404 to improve recovery in this case
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86204 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-06 00:12:53 +00:00
Douglas Gregor
26ef510d5d
Fix a typo, and all of its copies
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77489 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29 18:27:22 +00:00
Douglas Gregor
e657ec6701
Implement PointerUnion4.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77487 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29 18:19:47 +00:00
Sebastian Redl
37c286c181
Fix three MSVC 2008 warnings that completely clutter the build output.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74430 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-29 17:12:06 +00:00
Douglas Gregor
41222823db
Allow the use of pointers to const within PointerUnion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68159 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31 23:19:54 +00:00
Douglas Gregor
da84b25b13
Stop guessing, start thinking, and make PointerUnion3::is actually be correct.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68126 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31 18:31:03 +00:00
Douglas Gregor
a7425d7fde
Really, really fix PointerUnion3::is
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68079 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31 00:34:31 +00:00
Douglas Gregor
2048cdb08e
Make PointerUnion3::get work properly
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68067 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-30 21:44:13 +00:00
Chris Lattner
f54229192c
update comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68060 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-30 20:44:04 +00:00
Chris Lattner
e8bc475668
add a PointerUnion3 class and generalize PointerUnion to work with
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anything pointer-like, which may or may not actually be a pointer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68056 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-30 20:29:27 +00:00
Chris Lattner
3a9fe06bfe
add some comments, add a dyn_cast method.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67992 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-29 07:03:30 +00:00
Chris Lattner
ba315c1ee7
add helper method.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67989 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-29 06:32:46 +00:00
Chris Lattner
2491e4657d
Add a simple type-safe bit-mangling pointer union class. This allows
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you to do things like:
/// PointerUnion<int*, float*> P;
/// P = (int*)0;
/// printf("%d %d", P.is<int*>(), P.is<float*>()); // prints "1 0"
/// X = P.get<int*>(); // ok.
/// Y = P.get<float*>(); // runtime assertion failure.
/// Z = P.get<double*>(); // does not compile.
/// P = (float*)0;
/// Y = P.get<float*>(); // ok.
/// X = P.get<int*>(); // runtime assertion failure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67987 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-29 06:06:02 +00:00