Revamp the SourceManager to separate the representation of parsed
source locations from source locations loaded from an AST/PCH file.
Previously, loading an AST/PCH file involved carefully pre-allocating
space at the beginning of the source manager for the source locations
and FileIDs that correspond to the prefix, and then appending the
source locations/FileIDs used for parsing the remaining translation
unit. This design forced us into loading PCH files early, as a prefix,
whic has become a rather significant limitation.
This patch splits the SourceManager space into two parts: for source
location "addresses", the lower values (growing upward) are used to
describe parsed code, while upper values (growing downward) are used
for source locations loaded from AST/PCH files. Similarly, positive
FileIDs are used to describe parsed code while negative FileIDs are
used to file/macro locations loaded from AST/PCH files. As a result,
we can load PCH/AST files even during parsing, making various
improvemnts in the future possible, e.g., teaching #include <foo.h> to
look for and load <foo.h.gch> if it happens to be already available.
This patch was originally written by Sebastian Redl, then brought
forward to the modern age by Jonathan Turner, and finally
polished/finished by me to be committed.
llvm-svn: 135484
2011-07-20 00:10:42 +08:00
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template void foo(int *);
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int main() { }
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2011-09-02 00:38:08 +08:00
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// RUN: c-index-test -write-pch %t.pch -fno-delayed-template-parsing -x c++-header %S/Inputs/preamble_macro_template.h
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// RUN: env CINDEXTEST_EDITING=1 c-index-test -test-load-source-reparse 5 local -fno-delayed-template-parsing -I %S/Inputs -include %t %s | FileCheck %s
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Revamp the SourceManager to separate the representation of parsed
source locations from source locations loaded from an AST/PCH file.
Previously, loading an AST/PCH file involved carefully pre-allocating
space at the beginning of the source manager for the source locations
and FileIDs that correspond to the prefix, and then appending the
source locations/FileIDs used for parsing the remaining translation
unit. This design forced us into loading PCH files early, as a prefix,
whic has become a rather significant limitation.
This patch splits the SourceManager space into two parts: for source
location "addresses", the lower values (growing upward) are used to
describe parsed code, while upper values (growing downward) are used
for source locations loaded from AST/PCH files. Similarly, positive
FileIDs are used to describe parsed code while negative FileIDs are
used to file/macro locations loaded from AST/PCH files. As a result,
we can load PCH/AST files even during parsing, making various
improvemnts in the future possible, e.g., teaching #include <foo.h> to
look for and load <foo.h.gch> if it happens to be already available.
This patch was originally written by Sebastian Redl, then brought
forward to the modern age by Jonathan Turner, and finally
polished/finished by me to be committed.
llvm-svn: 135484
2011-07-20 00:10:42 +08:00
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// CHECK: preamble_macro_template.h:4:6: FunctionDecl=foo:4:6 (Definition) [Specialization of foo:4:6] Extent=[4:1 - 6:2]
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// CHECK: preamble_macro_template.h:4:13: ParmDecl=p:4:13 (Definition) Extent=[4:10 - 4:14]
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2011-10-06 03:00:14 +08:00
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// CHECK: preamble_macro_template.h:4:16: CompoundStmt= Extent=[4:16 - 6:2]
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// CHECK: preamble_macro_template.h:5:3: CStyleCastExpr= Extent=[5:3 - 5:27]
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// CHECK: preamble_macro_template.h:1:21: CXXStaticCastExpr= Extent=[1:21 - 5:27]
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2011-11-30 06:48:16 +08:00
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// CHECK: preamble_macro_template.h:5:25: UnexposedExpr= Extent=[5:25 - 5:26]
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2011-10-06 03:00:14 +08:00
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// CHECK: preamble_macro_template.h:5:25: IntegerLiteral= Extent=[5:25 - 5:26]
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Revamp the SourceManager to separate the representation of parsed
source locations from source locations loaded from an AST/PCH file.
Previously, loading an AST/PCH file involved carefully pre-allocating
space at the beginning of the source manager for the source locations
and FileIDs that correspond to the prefix, and then appending the
source locations/FileIDs used for parsing the remaining translation
unit. This design forced us into loading PCH files early, as a prefix,
whic has become a rather significant limitation.
This patch splits the SourceManager space into two parts: for source
location "addresses", the lower values (growing upward) are used to
describe parsed code, while upper values (growing downward) are used
for source locations loaded from AST/PCH files. Similarly, positive
FileIDs are used to describe parsed code while negative FileIDs are
used to file/macro locations loaded from AST/PCH files. As a result,
we can load PCH/AST files even during parsing, making various
improvemnts in the future possible, e.g., teaching #include <foo.h> to
look for and load <foo.h.gch> if it happens to be already available.
This patch was originally written by Sebastian Redl, then brought
forward to the modern age by Jonathan Turner, and finally
polished/finished by me to be committed.
llvm-svn: 135484
2011-07-20 00:10:42 +08:00
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// CHECK: preamble_macro_template.cpp:3:5: FunctionDecl=main:3:5 (Definition) Extent=[3:1 - 3:15]
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2011-10-06 03:00:14 +08:00
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// CHECK: preamble_macro_template.cpp:3:12: CompoundStmt= Extent=[3:12 - 3:15]
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