llvm-project/clang/lib/CodeGen
Devang Patel e7ce54074f Fix location of setter/getter synthesized for a property.
llvm-svn: 131701
2011-05-19 23:37:41 +00:00
..
ABIInfo.h Fix Whitespace. 2010-10-19 06:39:39 +00:00
BackendUtil.cpp Conditionalize the use of 4.4 or 4.2 format based on the target. 2011-05-17 23:06:23 +00:00
CGBlocks.cpp Use arrays and SmallVectors instead of std::vectors when building function 2011-05-15 01:53:33 +00:00
CGBlocks.h Remove a rather egregious use of getFunctionInfo. 2011-03-09 08:39:33 +00:00
CGBuilder.h Make CGBuilderTy a typedef again; its functionality has been rolled back 2010-07-06 18:43:48 +00:00
CGBuiltin.cpp Remove the 'unaligned load' builtins now that they're no longer used in the *mmintrin.h files. 2011-05-13 18:52:28 +00:00
CGCXX.cpp Revert r131434, my commit disabling the complete-object constructor 2011-05-17 21:05:49 +00:00
CGCXXABI.cpp After some discussion with Doug, we decided that it made a lot more sense 2011-04-12 00:42:48 +00:00
CGCXXABI.h After some discussion with Doug, we decided that it made a lot more sense 2011-04-12 00:42:48 +00:00
CGCall.cpp For calls returning first-class aggregates, store by element instead of creating aggregate stores in common cases. This is more friendly to fast-isel. 2011-05-17 21:08:01 +00:00
CGCall.h Revert r130717, which caused a regression (<rdar://problem/9402621>). 2011-05-07 20:12:26 +00:00
CGClass.cpp Fix another regression from the "skip vtable pointer initialization" 2011-05-16 04:08:36 +00:00
CGCleanup.cpp implement rdar://9289524 - case followed immediately by break results in empty IR block, 2011-04-17 00:54:30 +00:00
CGCleanup.h Move all the cleanups framework code into a single file. 2011-01-28 11:13:47 +00:00
CGDebugInfo.cpp Set up appropriate context for member function. 2011-05-17 00:20:09 +00:00
CGDebugInfo.h Simplify. There is no need to have a method to just call another method. 2011-04-25 23:43:36 +00:00
CGDecl.cpp Implement support for C++0x alias templates. 2011-05-05 21:57:07 +00:00
CGDeclCXX.cpp Reset the emitted initializers. 2011-05-06 15:24:04 +00:00
CGException.cpp IRgen/Darwin: Fix refacto introduced in Triple changes. 2011-04-26 19:43:00 +00:00
CGException.h Fix Objective-C++ exceptions (GNU runtime). 2011-03-20 21:35:39 +00:00
CGExpr.cpp Remove dead variable, flagged by gcc's -Wunused-but-set-variable. 2011-05-02 00:46:56 +00:00
CGExprAgg.cpp Rename "hasTrivialConstructor" to "hasTrivialDefaultConstructor" and 2011-05-09 18:22:59 +00:00
CGExprCXX.cpp Don't actually emit calls to the reserved global placement new and delete 2011-05-16 01:05:12 +00:00
CGExprComplex.cpp C1X: implement generic selections 2011-04-15 00:35:48 +00:00
CGExprConstant.cpp Finish off rules for z-length bitfields in ms_struct 2011-05-03 20:21:04 +00:00
CGExprScalar.cpp Make __builtin_shufflevector and -ftrapv work correctly together. PR9945. 2011-05-19 00:37:32 +00:00
CGObjC.cpp Fix location of setter/getter synthesized for a property. 2011-05-19 23:37:41 +00:00
CGObjCGNU.cpp Patch to fix IR-gen crash generating structure ABI which implements 2011-05-17 22:21:16 +00:00
CGObjCMac.cpp Patch to fix IR-gen crash generating structure ABI which implements 2011-05-17 22:21:16 +00:00
CGObjCRuntime.cpp Make this code more resilient against catch variables which need cleanups. 2011-05-12 01:00:15 +00:00
CGObjCRuntime.h Patch to fix IR-gen crash generating structure ABI which implements 2011-05-17 22:21:16 +00:00
CGRTTI.cpp Make yet another placeholder type, this one marking that an expression is a bound 2011-04-26 20:42:42 +00:00
CGRecordLayout.h Convert AccessInfo::AccessAlignment to CharUnits. No change in functionality 2011-04-24 10:13:17 +00:00
CGRecordLayoutBuilder.cpp Finish off rules for z-length bitfields in ms_struct 2011-05-03 20:21:04 +00:00
CGStmt.cpp Parsing/AST support for Structured Exception Handling 2011-04-28 01:08:34 +00:00
CGTemporaries.cpp Fix some obvious bugs in the conditional-cleanup code and then make the 2011-01-26 19:15:39 +00:00
CGVTT.cpp Fix another regression from the "skip vtable pointer initialization" 2011-05-16 04:08:36 +00:00
CGVTables.cpp Fix another regression from the "skip vtable pointer initialization" 2011-05-16 04:08:36 +00:00
CGVTables.h [Reapply r128776, modified so that it does not break debug info.] 2011-04-07 12:37:09 +00:00
CGValue.h More capturing of 'this': implicit member expressions. Getting that 2011-02-03 08:15:49 +00:00
CMakeLists.txt Wire up the -ftest-coverage and -fprofile-arcs flags to .gcno file emission (at 2011-04-21 23:44:07 +00:00
CodeGenAction.cpp fix a bunch of comment typos found by codespell. Patch by 2011-04-15 05:22:18 +00:00
CodeGenFunction.cpp Fix crash on C++ code when compiling with -finstrument-functions. 2011-05-16 23:49:20 +00:00
CodeGenFunction.h Fix location of setter/getter synthesized for a property. 2011-05-19 23:37:41 +00:00
CodeGenModule.cpp Code cleanup of my last patch. 2011-05-17 22:46:11 +00:00
CodeGenModule.h Use arrays and SmallVectors instead of std::vectors when building function 2011-05-15 01:53:33 +00:00
CodeGenTBAA.cpp PR9214: Convert Metadata API to use ArrayRef. 2011-04-21 19:59:12 +00:00
CodeGenTBAA.h Move name mangling support from CodeGen to AST. In the 2011-01-13 18:57:25 +00:00
CodeGenTypes.cpp Make yet another placeholder type, this one marking that an expression is a bound 2011-04-26 20:42:42 +00:00
CodeGenTypes.h More killing of std::vector. 2011-05-15 02:19:42 +00:00
GlobalDecl.h When IRgen refers to a function declaration that is not a definition, 2011-02-09 02:03:05 +00:00
ItaniumCXXABI.cpp Remove dead variable flagged by gcc's -Wunused-but-set-variable. No 2011-05-02 00:41:17 +00:00
Makefile BUILD_ARCHIVE is the default for libraries, no need to set it. 2010-07-18 00:14:47 +00:00
MicrosoftCXXABI.cpp fix a bunch of comment typos found by codespell. Patch by 2011-04-15 05:22:18 +00:00
ModuleBuilder.cpp Modify some deleted function methods to better reflect reality: 2011-05-06 20:44:56 +00:00
README.txt These IRgen improvements have been done. 2009-07-23 03:03:07 +00:00
TargetInfo.cpp Add ARMTargetCodeGenInfo::initDwarfEHRegSizeTable() defining 16 32bit regs. 2011-05-18 19:36:54 +00:00
TargetInfo.h Re-instate r125819 and r125820 with no functionality change 2011-02-19 23:03:58 +00:00

README.txt

IRgen optimization opportunities.

//===---------------------------------------------------------------------===//

The common pattern of
--
short x; // or char, etc
(x == 10)
--
generates an zext/sext of x which can easily be avoided.

//===---------------------------------------------------------------------===//

Bitfields accesses can be shifted to simplify masking and sign
extension. For example, if the bitfield width is 8 and it is
appropriately aligned then is is a lot shorter to just load the char
directly.

//===---------------------------------------------------------------------===//

It may be worth avoiding creation of alloca's for formal arguments
for the common situation where the argument is never written to or has
its address taken. The idea would be to begin generating code by using
the argument directly and if its address is taken or it is stored to
then generate the alloca and patch up the existing code.

In theory, the same optimization could be a win for block local
variables as long as the declaration dominates all statements in the
block.

NOTE: The main case we care about this for is for -O0 -g compile time
performance, and in that scenario we will need to emit the alloca
anyway currently to emit proper debug info. So this is blocked by
being able to emit debug information which refers to an LLVM
temporary, not an alloca.

//===---------------------------------------------------------------------===//

We should try and avoid generating basic blocks which only contain
jumps. At -O0, this penalizes us all the way from IRgen (malloc &
instruction overhead), all the way down through code generation and
assembly time.

On 176.gcc:expr.ll, it looks like over 12% of basic blocks are just
direct branches!

//===---------------------------------------------------------------------===//