head 1.1; branch 1.1.1; access; symbols netbsd-11-0-RC6:1.1.1.3 netbsd-11-0-RC5:1.1.1.3 netbsd-11-0-RC4:1.1.1.3 netbsd-11-0-RC3:1.1.1.3 netbsd-11-0-RC2:1.1.1.3 netbsd-11-0-RC1:1.1.1.3 perseant-exfatfs-base-20250801:1.1.1.3 netbsd-11:1.1.1.3.0.10 netbsd-11-base:1.1.1.3 netbsd-10-1-RELEASE:1.1.1.3 perseant-exfatfs-base-20240630:1.1.1.3 perseant-exfatfs:1.1.1.3.0.8 perseant-exfatfs-base:1.1.1.3 netbsd-8-3-RELEASE:1.1.1.2 netbsd-9-4-RELEASE:1.1.1.2 netbsd-10-0-RELEASE:1.1.1.3 netbsd-10-0-RC6:1.1.1.3 netbsd-10-0-RC5:1.1.1.3 netbsd-10-0-RC4:1.1.1.3 netbsd-10-0-RC3:1.1.1.3 netbsd-10-0-RC2:1.1.1.3 netbsd-10-0-RC1:1.1.1.3 netbsd-10:1.1.1.3.0.6 netbsd-10-base:1.1.1.3 netbsd-9-3-RELEASE:1.1.1.2 cjep_sun2x:1.1.1.3.0.4 cjep_sun2x-base:1.1.1.3 cjep_staticlib_x-base1:1.1.1.3 netbsd-9-2-RELEASE:1.1.1.2 cjep_staticlib_x:1.1.1.3.0.2 cjep_staticlib_x-base:1.1.1.3 netbsd-9-1-RELEASE:1.1.1.2 phil-wifi-20200421:1.1.1.3 phil-wifi-20200411:1.1.1.3 phil-wifi-20200406:1.1.1.3 netbsd-8-2-RELEASE:1.1.1.2 netbsd-9-0-RELEASE:1.1.1.2 netbsd-9-0-RC2:1.1.1.2 netbsd-9-0-RC1:1.1.1.2 netbsd-9:1.1.1.2.0.28 netbsd-9-base:1.1.1.2 phil-wifi-20190609:1.1.1.2 netbsd-8-1-RELEASE:1.1.1.2 netbsd-8-1-RC1:1.1.1.2 pgoyette-compat-merge-20190127:1.1.1.2 pgoyette-compat-20190127:1.1.1.2 pgoyette-compat-20190118:1.1.1.2 pgoyette-compat-1226:1.1.1.2 pgoyette-compat-1126:1.1.1.2 pgoyette-compat-1020:1.1.1.2 pgoyette-compat-0930:1.1.1.2 pgoyette-compat-0906:1.1.1.2 netbsd-7-2-RELEASE:1.1.1.2 pgoyette-compat-0728:1.1.1.2 clang-337282:1.1.1.2 netbsd-8-0-RELEASE:1.1.1.2 phil-wifi:1.1.1.2.0.26 phil-wifi-base:1.1.1.2 pgoyette-compat-0625:1.1.1.2 netbsd-8-0-RC2:1.1.1.2 pgoyette-compat-0521:1.1.1.2 pgoyette-compat-0502:1.1.1.2 pgoyette-compat-0422:1.1.1.2 netbsd-8-0-RC1:1.1.1.2 pgoyette-compat-0415:1.1.1.2 pgoyette-compat-0407:1.1.1.2 pgoyette-compat-0330:1.1.1.2 pgoyette-compat-0322:1.1.1.2 pgoyette-compat-0315:1.1.1.2 netbsd-7-1-2-RELEASE:1.1.1.2 pgoyette-compat:1.1.1.2.0.24 pgoyette-compat-base:1.1.1.2 netbsd-7-1-1-RELEASE:1.1.1.2 clang-319952:1.1.1.2 matt-nb8-mediatek:1.1.1.2.0.22 matt-nb8-mediatek-base:1.1.1.2 clang-309604:1.1.1.2 perseant-stdc-iso10646:1.1.1.2.0.20 perseant-stdc-iso10646-base:1.1.1.2 netbsd-8:1.1.1.2.0.18 netbsd-8-base:1.1.1.2 prg-localcount2-base3:1.1.1.2 prg-localcount2-base2:1.1.1.2 prg-localcount2-base1:1.1.1.2 prg-localcount2:1.1.1.2.0.16 prg-localcount2-base:1.1.1.2 pgoyette-localcount-20170426:1.1.1.2 bouyer-socketcan-base1:1.1.1.2 pgoyette-localcount-20170320:1.1.1.2 netbsd-7-1:1.1.1.2.0.14 netbsd-7-1-RELEASE:1.1.1.2 netbsd-7-1-RC2:1.1.1.2 clang-294123:1.1.1.2 netbsd-7-nhusb-base-20170116:1.1.1.2 bouyer-socketcan:1.1.1.2.0.12 bouyer-socketcan-base:1.1.1.2 clang-291444:1.1.1.2 pgoyette-localcount-20170107:1.1.1.2 netbsd-7-1-RC1:1.1.1.2 pgoyette-localcount-20161104:1.1.1.2 netbsd-7-0-2-RELEASE:1.1.1.2 localcount-20160914:1.1.1.2 netbsd-7-nhusb:1.1.1.2.0.10 netbsd-7-nhusb-base:1.1.1.2 clang-280599:1.1.1.2 pgoyette-localcount-20160806:1.1.1.2 pgoyette-localcount-20160726:1.1.1.2 pgoyette-localcount:1.1.1.2.0.8 pgoyette-localcount-base:1.1.1.2 netbsd-7-0-1-RELEASE:1.1.1.2 clang-261930:1.1.1.2 netbsd-7-0:1.1.1.2.0.6 netbsd-7-0-RELEASE:1.1.1.2 netbsd-7-0-RC3:1.1.1.2 netbsd-7-0-RC2:1.1.1.2 netbsd-7-0-RC1:1.1.1.2 clang-237755:1.1.1.2 clang-232565:1.1.1.2 clang-227398:1.1.1.2 tls-maxphys-base:1.1.1.2 tls-maxphys:1.1.1.2.0.4 netbsd-7:1.1.1.2.0.2 netbsd-7-base:1.1.1.2 clang-215315:1.1.1.2 clang-209886:1.1.1.1 yamt-pagecache:1.1.1.1.0.4 yamt-pagecache-base9:1.1.1.1 tls-earlyentropy:1.1.1.1.0.2 tls-earlyentropy-base:1.1.1.1 riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.1 riastradh-drm2-base3:1.1.1.1 clang-202566:1.1.1.1 clang-201163:1.1.1.1 clang-199312:1.1.1.1 clang-198450:1.1.1.1 clang-196603:1.1.1.1 clang-195771:1.1.1.1 LLVM:1.1.1; locks; strict; comment @# @; 1.1 date 2013.11.28.14.14.46; author joerg; state Exp; branches 1.1.1.1; next ; commitid ow8OybrawrB1f3fx; 1.1.1.1 date 2013.11.28.14.14.46; author joerg; state Exp; branches 1.1.1.1.4.1; next 1.1.1.2; commitid ow8OybrawrB1f3fx; 1.1.1.2 date 2014.08.10.17.07.09; author joerg; state Exp; branches 1.1.1.2.4.1 1.1.1.2.26.1; next 1.1.1.3; commitid N85tXAN6Ex9VZPLx; 1.1.1.3 date 2019.11.13.22.19.09; author joerg; state dead; branches; next ; commitid QD8YATxuNG34YJKB; 1.1.1.1.4.1 date 2013.11.28.14.14.46; author yamt; state dead; branches; next 1.1.1.1.4.2; commitid WSrDtL5nYAUyiyBx; 1.1.1.1.4.2 date 2014.05.22.16.18.17; author yamt; state Exp; branches; next ; commitid WSrDtL5nYAUyiyBx; 1.1.1.2.4.1 date 2014.08.10.17.07.09; author tls; state dead; branches; next 1.1.1.2.4.2; commitid jTnpym9Qu0o4R1Nx; 1.1.1.2.4.2 date 2014.08.19.23.47.19; author tls; state Exp; branches; next ; commitid jTnpym9Qu0o4R1Nx; 1.1.1.2.26.1 date 2020.04.13.07.46.18; author martin; state dead; branches; next ; commitid X01YhRUPVUDaec4C; desc @@ 1.1 log @Initial revision @ text @//===---------------------------------------------------------------------===// // Random Notes //===---------------------------------------------------------------------===// //===---------------------------------------------------------------------===// To time GCC preprocessing speed without output, use: "time gcc -MM file" This is similar to -Eonly. //===---------------------------------------------------------------------===// Creating and using a PTH file for performance measurement (use a release build). $ clang -ccc-pch-is-pth -x objective-c-header INPUTS/Cocoa_h.m -o /tmp/tokencache $ clang -cc1 -token-cache /tmp/tokencache INPUTS/Cocoa_h.m //===---------------------------------------------------------------------===// C++ Template Instantiation benchmark: http://users.rcn.com/abrahams/instantiation_speed/index.html //===---------------------------------------------------------------------===// TODO: File Manager Speedup: We currently do a lot of stat'ing for files that don't exist, particularly when lots of -I paths exist (e.g. see the example, check for failures in stat in FileManager::getFile). It would be far better to make the following changes: 1. FileEntry contains a sys::Path instead of a std::string for Name. 2. sys::Path contains timestamp and size, lazily computed. Eliminate from FileEntry. 3. File UIDs are created on request, not when files are opened. These changes make it possible to efficiently have FileEntry objects for files that exist on the file system, but have not been used yet. Once this is done: 1. DirectoryEntry gets a boolean value "has read entries". When false, not all entries in the directory are in the file mgr, when true, they are. 2. Instead of stat'ing the file in FileManager::getFile, check to see if the dir has been read. If so, fail immediately, if not, read the dir, then retry. 3. Reading the dir uses the getdirentries syscall, creating a FileEntry for all files found. //===---------------------------------------------------------------------===// // Specifying targets: -triple and -arch //===---------------------------------------------------------------------===// The clang supports "-triple" and "-arch" options. At most one -triple and one -arch option may be specified. Both are optional. The "selection of target" behavior is defined as follows: (1) If the user does not specify -triple, we default to the host triple. (2) If the user specifies a -arch, that overrides the arch in the host or specified triple. //===---------------------------------------------------------------------===// verifyInputConstraint and verifyOutputConstraint should not return bool. Instead we should return something like: enum VerifyConstraintResult { Valid, // Output only OutputOperandConstraintLacksEqualsCharacter, MatchingConstraintNotValidInOutputOperand, // Input only InputOperandConstraintContainsEqualsCharacter, MatchingConstraintReferencesInvalidOperandNumber, // Both PercentConstraintUsedWithLastOperand }; //===---------------------------------------------------------------------===// Blocks should not capture variables that are only used in dead code. The rule that we came up with is that blocks are required to capture variables if they're referenced in evaluated code, even if that code doesn't actually rely on the value of the captured variable. For example, this requires a capture: (void) var; But this does not: if (false) puts(var); Summary of : if we implement this, we should warn about non-POD variables that are referenced but not captured, but only if the non-reachability is not due to macro or template metaprogramming. //===---------------------------------------------------------------------===// We can still apply a modified version of the constructor/destructor delegation optimization in cases of virtual inheritance where: - there is no function-try-block, - the constructor signature is not variadic, and - the parameter variables can safely be copied and repassed to the base constructor because either - they have not had their addresses taken by the vbase initializers or - they were passed indirectly. //===---------------------------------------------------------------------===// @ 1.1.1.1 log @Import Clang 3.4rc1 r195771. @ text @@ 1.1.1.2 log @Import clang 3.6svn r215315. @ text @d37 1 a37 1 d41 1 a41 1 2. Instead of stat'ing the file in FileManager::getFile, check to see if d58 1 a58 1 specified triple. d63 1 a63 1 verifyInputConstraint and verifyOutputConstraint should not return bool. d69 1 a69 1 d77 1 a77 1 @ 1.1.1.2.26.1 log @Mostly merge changes from HEAD upto 20200411 @ text @@ 1.1.1.3 log @Mark old LLVM instance as dead. @ text @@ 1.1.1.2.4.1 log @file NOTES.txt was added on branch tls-maxphys on 2014-08-19 23:47:19 +0000 @ text @d1 111 @ 1.1.1.2.4.2 log @Rebase to HEAD as of a few days ago. @ text @a0 111 //===---------------------------------------------------------------------===// // Random Notes //===---------------------------------------------------------------------===// //===---------------------------------------------------------------------===// To time GCC preprocessing speed without output, use: "time gcc -MM file" This is similar to -Eonly. //===---------------------------------------------------------------------===// Creating and using a PTH file for performance measurement (use a release build). $ clang -ccc-pch-is-pth -x objective-c-header INPUTS/Cocoa_h.m -o /tmp/tokencache $ clang -cc1 -token-cache /tmp/tokencache INPUTS/Cocoa_h.m //===---------------------------------------------------------------------===// C++ Template Instantiation benchmark: http://users.rcn.com/abrahams/instantiation_speed/index.html //===---------------------------------------------------------------------===// TODO: File Manager Speedup: We currently do a lot of stat'ing for files that don't exist, particularly when lots of -I paths exist (e.g. see the example, check for failures in stat in FileManager::getFile). It would be far better to make the following changes: 1. FileEntry contains a sys::Path instead of a std::string for Name. 2. sys::Path contains timestamp and size, lazily computed. Eliminate from FileEntry. 3. File UIDs are created on request, not when files are opened. These changes make it possible to efficiently have FileEntry objects for files that exist on the file system, but have not been used yet. Once this is done: 1. DirectoryEntry gets a boolean value "has read entries". When false, not all entries in the directory are in the file mgr, when true, they are. 2. Instead of stat'ing the file in FileManager::getFile, check to see if the dir has been read. If so, fail immediately, if not, read the dir, then retry. 3. Reading the dir uses the getdirentries syscall, creating a FileEntry for all files found. //===---------------------------------------------------------------------===// // Specifying targets: -triple and -arch //===---------------------------------------------------------------------===// The clang supports "-triple" and "-arch" options. At most one -triple and one -arch option may be specified. Both are optional. The "selection of target" behavior is defined as follows: (1) If the user does not specify -triple, we default to the host triple. (2) If the user specifies a -arch, that overrides the arch in the host or specified triple. //===---------------------------------------------------------------------===// verifyInputConstraint and verifyOutputConstraint should not return bool. Instead we should return something like: enum VerifyConstraintResult { Valid, // Output only OutputOperandConstraintLacksEqualsCharacter, MatchingConstraintNotValidInOutputOperand, // Input only InputOperandConstraintContainsEqualsCharacter, MatchingConstraintReferencesInvalidOperandNumber, // Both PercentConstraintUsedWithLastOperand }; //===---------------------------------------------------------------------===// Blocks should not capture variables that are only used in dead code. The rule that we came up with is that blocks are required to capture variables if they're referenced in evaluated code, even if that code doesn't actually rely on the value of the captured variable. For example, this requires a capture: (void) var; But this does not: if (false) puts(var); Summary of : if we implement this, we should warn about non-POD variables that are referenced but not captured, but only if the non-reachability is not due to macro or template metaprogramming. //===---------------------------------------------------------------------===// We can still apply a modified version of the constructor/destructor delegation optimization in cases of virtual inheritance where: - there is no function-try-block, - the constructor signature is not variadic, and - the parameter variables can safely be copied and repassed to the base constructor because either - they have not had their addresses taken by the vbase initializers or - they were passed indirectly. //===---------------------------------------------------------------------===// @ 1.1.1.1.4.1 log @file NOTES.txt was added on branch yamt-pagecache on 2014-05-22 16:18:17 +0000 @ text @d1 111 @ 1.1.1.1.4.2 log @sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments") @ text @a0 111 //===---------------------------------------------------------------------===// // Random Notes //===---------------------------------------------------------------------===// //===---------------------------------------------------------------------===// To time GCC preprocessing speed without output, use: "time gcc -MM file" This is similar to -Eonly. //===---------------------------------------------------------------------===// Creating and using a PTH file for performance measurement (use a release build). $ clang -ccc-pch-is-pth -x objective-c-header INPUTS/Cocoa_h.m -o /tmp/tokencache $ clang -cc1 -token-cache /tmp/tokencache INPUTS/Cocoa_h.m //===---------------------------------------------------------------------===// C++ Template Instantiation benchmark: http://users.rcn.com/abrahams/instantiation_speed/index.html //===---------------------------------------------------------------------===// TODO: File Manager Speedup: We currently do a lot of stat'ing for files that don't exist, particularly when lots of -I paths exist (e.g. see the example, check for failures in stat in FileManager::getFile). It would be far better to make the following changes: 1. FileEntry contains a sys::Path instead of a std::string for Name. 2. sys::Path contains timestamp and size, lazily computed. Eliminate from FileEntry. 3. File UIDs are created on request, not when files are opened. These changes make it possible to efficiently have FileEntry objects for files that exist on the file system, but have not been used yet. Once this is done: 1. DirectoryEntry gets a boolean value "has read entries". When false, not all entries in the directory are in the file mgr, when true, they are. 2. Instead of stat'ing the file in FileManager::getFile, check to see if the dir has been read. If so, fail immediately, if not, read the dir, then retry. 3. Reading the dir uses the getdirentries syscall, creating a FileEntry for all files found. //===---------------------------------------------------------------------===// // Specifying targets: -triple and -arch //===---------------------------------------------------------------------===// The clang supports "-triple" and "-arch" options. At most one -triple and one -arch option may be specified. Both are optional. The "selection of target" behavior is defined as follows: (1) If the user does not specify -triple, we default to the host triple. (2) If the user specifies a -arch, that overrides the arch in the host or specified triple. //===---------------------------------------------------------------------===// verifyInputConstraint and verifyOutputConstraint should not return bool. Instead we should return something like: enum VerifyConstraintResult { Valid, // Output only OutputOperandConstraintLacksEqualsCharacter, MatchingConstraintNotValidInOutputOperand, // Input only InputOperandConstraintContainsEqualsCharacter, MatchingConstraintReferencesInvalidOperandNumber, // Both PercentConstraintUsedWithLastOperand }; //===---------------------------------------------------------------------===// Blocks should not capture variables that are only used in dead code. The rule that we came up with is that blocks are required to capture variables if they're referenced in evaluated code, even if that code doesn't actually rely on the value of the captured variable. For example, this requires a capture: (void) var; But this does not: if (false) puts(var); Summary of : if we implement this, we should warn about non-POD variables that are referenced but not captured, but only if the non-reachability is not due to macro or template metaprogramming. //===---------------------------------------------------------------------===// We can still apply a modified version of the constructor/destructor delegation optimization in cases of virtual inheritance where: - there is no function-try-block, - the constructor signature is not variadic, and - the parameter variables can safely be copied and repassed to the base constructor because either - they have not had their addresses taken by the vbase initializers or - they were passed indirectly. //===---------------------------------------------------------------------===// @