Chris Lattner ea03e10fac Implement rdar://7415680 - Twine integer support lacks greatness ... Microoptimize Twine's with unsigned and int to not pin their value to the stack. This saves stack space in common cases and allows mem2reg in the caller. A simple example is: void foo(const Twine &); void bar(int x) { foo("xyz: " + Twine(x)); } Before: __Z3bari: subq $40, %rsp movl %edi, 36(%rsp) leaq L_.str3(%rip), %rax leaq 36(%rsp), %rcx leaq 8(%rsp), %rdi movq %rax, 8(%rsp) movq %rcx, 16(%rsp) movb $3, 24(%rsp) movb $7, 25(%rsp) callq __Z3fooRKN4llvm5TwineE addq $40, %rsp ret After: __Z3bari: subq $24, %rsp leaq L_.str3(%rip), %rax movq %rax, (%rsp) movslq %edi, %rax movq %rax, 8(%rsp) movb $3, 16(%rsp) movb $7, 17(%rsp) leaq (%rsp), %rdi callq __Z3fooRKN4llvm5TwineE addq $24, %rsp ret It saves 16 bytes of stack and one instruction in this case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103107 91177308-0d34-0410-b5e6-96231b3b80d8		2010-05-05 18:40:33 +00:00
..
Allocator.cpp	BumpPtrAllocator::Reset() doesn't need to allocate anything. (Thanks, Jakob)	2010-04-13 16:38:06 +00:00
APFloat.cpp	Fix minor style issues.	2010-03-24 19:38:02 +00:00
APInt.cpp	improve portability to minix, patch by	2010-03-26 23:54:15 +00:00
APSInt.cpp
circular_raw_ostream.cpp	clean this up, fix std::min ambiguity on some platforms.	2010-04-09 20:43:54 +00:00
CMakeLists.txt
CommandLine.cpp	Fix minor style issues.	2010-03-24 19:38:02 +00:00
ConstantRange.cpp
COPYRIGHT.regex
Debug.cpp	Fix a bunch of namespace polution.	2010-04-15 17:08:50 +00:00
DeltaAlgorithm.cpp
Dwarf.cpp	Fix typo. add a test case.	2010-04-19 20:31:39 +00:00
ErrorHandling.cpp	rename llvm_install_error_handler -> install_fatal_error_handler	2010-04-07 23:12:29 +00:00
FileUtilities.cpp
FoldingSet.cpp	Add the ability to "intern" FoldingSetNodeID data into a	2010-03-18 16:16:38 +00:00
FormattedStream.cpp
GraphWriter.cpp	reduce indentation	2010-04-18 03:35:23 +00:00
IsInf.cpp
IsNAN.cpp
Makefile
ManagedStatic.cpp
MemoryBuffer.cpp	stringref-ize the MemoryBuffer::get apis. This requires	2010-04-05 22:42:30 +00:00
MemoryObject.cpp
PluginLoader.cpp
PrettyStackTrace.cpp
raw_os_ostream.cpp
raw_ostream.cpp	Try again if write(2) reports an recoverable error.	2010-05-05 15:17:47 +00:00
regcclass.h
regcname.h
regcomp.c
regengine.inc	Various MSVC warning fixes about truncated 64 bit shifts and const pointers passed to free.	2010-04-08 15:25:57 +00:00
regerror.c
regex2.h
regex_impl.h
Regex.cpp
regexec.c	Push const through the regex engine. Fixes some of the warnings in PR6616.	2010-04-05 17:50:20 +00:00
regfree.c
regstrlcpy.c
regutils.h
SlowOperationInformer.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp	enhance SMDiagnostic to also maintain a pointer to the SourceMgr.	2010-04-06 18:06:18 +00:00
Statistic.cpp	Introduce namespace-scope functions to enable LLVM statistics without	2010-03-30 17:32:08 +00:00
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp
SystemUtils.cpp
TargetRegistry.cpp
Timer.cpp	Fix a bunch of namespace polution.	2010-04-15 17:08:50 +00:00
Triple.cpp	Fix comment typo.	2010-03-24 09:05:14 +00:00
Twine.cpp	Implement rdar://7415680 - Twine integer support lacks greatness	2010-05-05 18:40:33 +00:00