llvm-project/clang/lib/CodeGen
Simon Pilgrim 04c5a34f4f [CGObjCGNU] Rename GetSelector helper method to fix -Woverloaded-virtual warning (PR38210)
As suggested by @theraven on PR38210, this patch fixes the gcc -Woverloaded-virtual warnings by renaming the extra CGObjCGNU::GetSelector method to CGObjCGNU::GetTypedSelector

Differential Revision: https://reviews.llvm.org/D50448

llvm-svn: 339264
2018-08-08 15:53:14 +00:00
..
ABIInfo.h Delete BuiltinCC. NFC. 2018-03-20 22:02:57 +00:00
Address.h
BackendUtil.cpp Re-land r337333, "Teach Clang to emit address-significance tables.", 2018-07-18 00:27:07 +00:00
CGAtomic.cpp Added atomic_fetch_min, max, umin, umax intrinsics to clang. 2018-05-13 07:45:58 +00:00
CGBlocks.cpp [NFC] Initialize a variable to prevent future invalid deref. 2018-08-03 18:08:36 +00:00
CGBlocks.h Remove trailing space 2018-07-30 19:24:48 +00:00
CGBuilder.h Remove trailing space 2018-07-30 19:24:48 +00:00
CGBuiltin.cpp [OpenCL] Restore r338899 (reverted in r338904), fixing stack-use-after-return 2018-08-07 15:52:49 +00:00
CGCUDANV.cpp [HIP] Register/unregister device fat binary only once 2018-07-20 22:45:24 +00:00
CGCUDARuntime.cpp Refactor call emission to package the function pointer together with 2016-10-26 23:46:34 +00:00
CGCUDARuntime.h
CGCXX.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGCXXABI.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGCXXABI.h [WebAssembly] Use Windows EH instructions for Wasm EH 2018-05-31 22:18:13 +00:00
CGCall.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGCall.h Remove trailing space 2018-07-30 19:24:48 +00:00
CGClass.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGCleanup.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGCleanup.h Remove trailing space 2018-07-30 19:24:48 +00:00
CGCoroutine.cpp [Coroutines] Less IR for noexcept await_resume 2018-06-23 18:57:26 +00:00
CGDebugInfo.cpp Revert "[DebugInfo] Generate debug information for labels. (Fix PR37395)" 2018-08-06 07:07:18 +00:00
CGDebugInfo.h Revert "[DebugInfo] Generate debug information for labels. (Fix PR37395)" 2018-08-06 07:07:18 +00:00
CGDecl.cpp [NFC] CGDecl factor out constant emission 2018-08-07 21:55:13 +00:00
CGDeclCXX.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGException.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGExpr.cpp Avoid creating conditional cleanup blocks that contain only @llvm.lifetime.end calls 2018-08-04 01:25:06 +00:00
CGExprAgg.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGExprCXX.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGExprComplex.cpp Remove \brief commands from doxygen comments. 2018-05-09 01:00:01 +00:00
CGExprConstant.cpp [CodeGen] IncompleteArray Support 2018-08-08 00:01:21 +00:00
CGExprScalar.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGGPUBuiltin.cpp Recommit r326946 after reducing CallArgList memory footprint 2018-03-15 15:25:19 +00:00
CGLoopInfo.cpp [CodeGen] Emit parallel_loop_access for each loop in the loop stack. 2018-08-03 04:42:52 +00:00
CGLoopInfo.h [UnrollAndJam] Add unroll_and_jam pragma handling 2018-08-01 14:36:12 +00:00
CGNonTrivialStruct.cpp Move the visitor classes that are used to traverse non-trivial C structs 2018-04-17 19:05:17 +00:00
CGObjC.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGObjCGNU.cpp [CGObjCGNU] Rename GetSelector helper method to fix -Woverloaded-virtual warning (PR38210) 2018-08-08 15:53:14 +00:00
CGObjCMac.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGObjCRuntime.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGObjCRuntime.h Remove trailing space 2018-07-30 19:24:48 +00:00
CGOpenCLRuntime.cpp [OpenCL] Add separate read_only and write_only pipe IR types 2018-04-27 10:37:04 +00:00
CGOpenCLRuntime.h Remove \brief commands from doxygen comments. 2018-05-09 01:00:01 +00:00
CGOpenMPRuntime.cpp [OPENMP] Mark variables captured in declare target region as implicitly 2018-08-07 16:14:36 +00:00
CGOpenMPRuntime.h [OPENMP] Mark variables captured in declare target region as implicitly 2018-08-07 16:14:36 +00:00
CGOpenMPRuntimeNVPTX.cpp [OPENMP] ThreadId in serialized parallel regions is 0. 2018-07-25 20:03:01 +00:00
CGOpenMPRuntimeNVPTX.h [OPENMP, NVPTX] Fix globalization of the variables passed to orphaned 2018-06-21 20:26:33 +00:00
CGRecordLayout.h Remove \brief commands from doxygen comments. 2018-05-09 01:00:01 +00:00
CGRecordLayoutBuilder.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGStmt.cpp Revert "[DebugInfo] Generate debug information for labels. (Fix PR37395)" 2018-08-06 07:07:18 +00:00
CGStmtOpenMP.cpp [OPENMP] DO not crash on combined constructs in declare target 2018-05-16 15:08:32 +00:00
CGVTT.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CGVTables.cpp [DebugInfo] Use DbgVariableIntrinsic as the base class of variables. 2018-08-06 04:00:08 +00:00
CGVTables.h Remove trailing space 2018-07-30 19:24:48 +00:00
CGValue.h Remove trailing space 2018-07-30 19:24:48 +00:00
CMakeLists.txt Compile CodeGenModule.cpp with /bigobj. 2018-06-26 17:45:26 +00:00
CodeGenABITypes.cpp Include getting generated struct offsets in CodegenABITypes 2017-10-10 23:54:21 +00:00
CodeGenAction.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CodeGenFunction.cpp Implement cpu_dispatch/cpu_specific Multiversioning 2018-07-20 14:13:28 +00:00
CodeGenFunction.h [clang][ubsan] Implicit Conversion Sanitizer - integer truncation - clang part 2018-07-30 18:58:30 +00:00
CodeGenModule.cpp [OPENMP] Mark variables captured in declare target region as implicitly 2018-08-07 16:14:36 +00:00
CodeGenModule.h Remove trailing space 2018-07-30 19:24:48 +00:00
CodeGenPGO.cpp Remove \brief commands from doxygen comments. 2018-05-09 01:00:01 +00:00
CodeGenPGO.h Remove a dead field. NFC. 2017-04-24 20:54:36 +00:00
CodeGenTBAA.cpp [CodeGen] Fix generation of TBAA tags for may-alias accesses 2018-02-20 12:33:04 +00:00
CodeGenTBAA.h [CodeGen] Fix generation of TBAA tags for may-alias accesses 2018-02-20 12:33:04 +00:00
CodeGenTypeCache.h Delete BuiltinCC. NFC. 2018-03-20 22:02:57 +00:00
CodeGenTypes.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CodeGenTypes.h Remove trailing space 2018-07-30 19:24:48 +00:00
ConstantEmitter.h [NFC] typo 2018-07-11 19:51:40 +00:00
ConstantInitBuilder.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
CoverageMappingGen.cpp [Coverage] End deferred regions before labels, fixes PR35867 2018-06-01 00:37:13 +00:00
CoverageMappingGen.h Remove \brief commands from doxygen comments. 2018-05-09 01:00:01 +00:00
EHScopeStack.h Spelling mistakes in comments. NFCI. (PR27635) 2017-03-30 14:13:19 +00:00
ItaniumCXXABI.cpp Revert r337456: [CodeGen] Disable aggressive structor optimizations at -O0, take 3 2018-07-29 03:05:07 +00:00
MacroPPCallbacks.cpp Reland '[clang] Adding CharacteristicKind to PPCallbacks::InclusionDirective' 2018-05-10 19:05:36 +00:00
MacroPPCallbacks.h Reland '[clang] Adding CharacteristicKind to PPCallbacks::InclusionDirective' 2018-05-10 19:05:36 +00:00
MicrosoftCXXABI.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
ModuleBuilder.cpp D34444: Teach codegen to work in incremental processing mode. 2017-08-27 10:58:03 +00:00
ObjectFilePCHContainerOperations.cpp [clang] Update uses of DEBUG macro to LLVM_DEBUG. 2018-05-15 13:30:56 +00:00
README.txt
SanitizerMetadata.cpp hwasan: add -fsanitize=kernel-hwaddress flag 2018-04-13 18:05:21 +00:00
SanitizerMetadata.h
SwiftCallingConv.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
TargetInfo.cpp Remove trailing space 2018-07-30 19:24:48 +00:00
TargetInfo.h [CUDA][HIP] Set kernel calling convention before arrange function 2018-06-12 00:16:33 +00:00
VarBypassDetector.cpp Fix typos in clang 2018-04-06 15:14:32 +00:00
VarBypassDetector.h [CodeGen] Don't emit lifetime intrinsics for some local variables 2016-10-26 05:42:30 +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!

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