Mercurial > projects > ldc
annotate gen/classes.h @ 1117:4c20fcc4252b
Fun with parameter attributes: For several of the "synthetic" parameters added
to D functions, we can apply noalias and nocapture. They are sret parameters,
'nest' pointers passed to nested functions, and _argptr:
Nocapture:
- Sret and nest are nocapture because they don't represent D-level variables,
and thus the callee can't (validly) obtain a pointer to them, let alone keep
it around after it returns.
- _argptr is nocapture because although the callee has access to it as a
pointer, that pointer is invalidated when it returns.
All three are noalias because they're function-local variables
- Sret and _argptr are noalias because they're freshly alloca'd memory only
used for a single function call that's not allowed to keep an aliasing
pointer to it around (since the parameter is nocapture).
- 'Nest' is noalias because the callee only ever has access to one such pointer
per parent function, and every parent function has a different one.
This commit also ensures attributes set on sret, _arguments and _argptr are
propagated to calls to such functions.
It also adds one exception to the general rule that attributes on function types
should propagate to calls: the type of a delegate's function pointer has a
'nest' parameter, but this can either be a true 'nest' (for delegates to nested
functions) or a 'this' (for delegates to member functions). Since 'this' is
neither noalias nor nocapture, and there's generally no way to tell which one it
is, we remove these attributes at the call site if the callee is a delegate.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Sat, 14 Mar 2009 22:15:31 +0100 |
parents | 5a2983f97498 |
children | 79758fd2f48a |
rev | line source |
---|---|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
486
diff
changeset
|
1 #ifndef LDC_GEN_CLASSES_H |
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
486
diff
changeset
|
2 #define LDC_GEN_CLASSES_H |
100 | 3 |
217
0806379a5eca
[svn r233] Added: -oq command line option for writing fully qualified object names.
lindquist
parents:
213
diff
changeset
|
4 #include "gen/structs.h" |
0806379a5eca
[svn r233] Added: -oq command line option for writing fully qualified object names.
lindquist
parents:
213
diff
changeset
|
5 |
100 | 6 /** |
102
027b8d8b71ec
[svn r106] Turns out the last commit wasn't enough, now the D->LLVM process is even more split up.
lindquist
parents:
100
diff
changeset
|
7 * Resolves the llvm type for a class declaration |
027b8d8b71ec
[svn r106] Turns out the last commit wasn't enough, now the D->LLVM process is even more split up.
lindquist
parents:
100
diff
changeset
|
8 */ |
027b8d8b71ec
[svn r106] Turns out the last commit wasn't enough, now the D->LLVM process is even more split up.
lindquist
parents:
100
diff
changeset
|
9 void DtoResolveClass(ClassDeclaration* cd); |
027b8d8b71ec
[svn r106] Turns out the last commit wasn't enough, now the D->LLVM process is even more split up.
lindquist
parents:
100
diff
changeset
|
10 |
027b8d8b71ec
[svn r106] Turns out the last commit wasn't enough, now the D->LLVM process is even more split up.
lindquist
parents:
100
diff
changeset
|
11 /** |
100 | 12 * Provides the llvm declaration for a class declaration |
13 */ | |
14 void DtoDeclareClass(ClassDeclaration* cd); | |
15 | |
16 /** | |
17 * Constructs the constant initializer for a class declaration | |
18 */ | |
19 void DtoConstInitClass(ClassDeclaration* cd); | |
20 | |
21 /** | |
22 * Provides the llvm definition for a class declaration | |
23 */ | |
24 void DtoDefineClass(ClassDeclaration* cd); | |
25 | |
26 void DtoDeclareClassInfo(ClassDeclaration* cd); | |
27 void DtoDefineClassInfo(ClassDeclaration* cd); | |
28 | |
486
a34078905d01
Added pragma(llvmdc, "string") for misc per-module compiler configuration, currently "string" can only be "verbose" which forces -vv for module it appears in.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
217
diff
changeset
|
29 DValue* DtoNewClass(Loc loc, TypeClass* type, NewExp* newexp); |
213
7816aafeea3c
[svn r229] Updated the object.d implementation to the latest Tango.
lindquist
parents:
210
diff
changeset
|
30 void DtoInitClass(TypeClass* tc, LLValue* dst); |
7816aafeea3c
[svn r229] Updated the object.d implementation to the latest Tango.
lindquist
parents:
210
diff
changeset
|
31 DValue* DtoCallClassCtor(TypeClass* type, CtorDeclaration* ctor, Array* arguments, LLValue* mem); |
7816aafeea3c
[svn r229] Updated the object.d implementation to the latest Tango.
lindquist
parents:
210
diff
changeset
|
32 void DtoFinalizeClass(LLValue* inst); |
100 | 33 |
114 | 34 DValue* DtoCastClass(DValue* val, Type* to); |
35 DValue* DtoDynamicCastObject(DValue* val, Type* to); | |
133
44a95ac7368a
[svn r137] Many fixes towards tango.io.Console working, but not quite there yet...
lindquist
parents:
132
diff
changeset
|
36 |
114 | 37 DValue* DtoCastInterfaceToObject(DValue* val, Type* to); |
133
44a95ac7368a
[svn r137] Many fixes towards tango.io.Console working, but not quite there yet...
lindquist
parents:
132
diff
changeset
|
38 DValue* DtoDynamicCastInterface(DValue* val, Type* to); |
113
27b9f749d9fe
[svn r117] Initial working implementation of interfaces.
lindquist
parents:
102
diff
changeset
|
39 |
705
5a2983f97498
Fixed weird struct problem from downs, see mini/compile_structs1.d
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
40 LLValue* DtoIndexClass(LLValue* src, ClassDeclaration* sd, VarDeclaration* vd); |
132 | 41 |
213
7816aafeea3c
[svn r229] Updated the object.d implementation to the latest Tango.
lindquist
parents:
210
diff
changeset
|
42 LLValue* DtoVirtualFunctionPointer(DValue* inst, FuncDeclaration* fdecl); |
133
44a95ac7368a
[svn r137] Many fixes towards tango.io.Console working, but not quite there yet...
lindquist
parents:
132
diff
changeset
|
43 |
100 | 44 #endif |