llvm-mirror/lib
Adrian Prantl 7566e72bb8 This reapplies r207235 with an additional bugfixes caught by the msan
buildbot - do not insert debug intrinsics before phi nodes.

Debug info for optimized code: Support variables that are on the stack and
described by DBG_VALUEs during their lifetime.

Previously, when a variable was at a FrameIndex for any part of its
lifetime, this would shadow all other DBG_VALUEs and only a single
fbreg location would be emitted, which in fact is only valid for a small
range and not the entire lexical scope of the variable. The included
dbg-value-const-byref testcase demonstrates this.

This patch fixes this by
Local
- emitting dbg.value intrinsics for allocas that are passed by reference
- dropping all dbg.declares (they are now fully lowered to dbg.values)
SelectionDAG
- renamed constructors for SDDbgValue for better readability.
- fix UserValue::match() to handle indirect values correctly
- not inserting an MMI table entries for dbg.values that describe allocas.
- lowering dbg.values that describe allocas into *indirect* DBG_VALUEs.
CodeGenPrepare
- leaving dbg.values for an alloca were they are (see comment)
Other
- regenerated/updated instcombine.ll testcase and included source

rdar://problem/16679879
http://reviews.llvm.org/D3374

llvm-svn: 207269
2014-04-25 20:49:25 +00:00
..
Analysis blockfreq: Further shift logic to LoopData 2014-04-25 18:47:04 +00:00
AsmParser Add 'musttail' marker to call instructions 2014-04-24 20:14:34 +00:00
Bitcode Add 'musttail' marker to call instructions 2014-04-24 20:14:34 +00:00
CodeGen This reapplies r207235 with an additional bugfixes caught by the msan 2014-04-25 20:49:25 +00:00
DebugInfo [DWARF parser] Make a few methods non-public 2014-04-24 23:08:56 +00:00
ExecutionEngine [C++] Use 'nullptr'. 2014-04-24 06:44:33 +00:00
IR Add 'musttail' marker to call instructions 2014-04-24 20:14:34 +00:00
IRReader [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
LineEditor [CMake] Use LINK_LIBS instead of target_link_libraries(). 2014-02-26 06:41:29 +00:00
Linker [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
LTO Create MCTargetOptions. 2014-04-23 11:16:03 +00:00
MC Fix quadratic performance during debug compression due to sections x symbols iteration. 2014-04-25 00:48:01 +00:00
Object [yaml2obj][ELF] Remove unnecessary space between namespace name and 2014-04-23 17:30:29 +00:00
Option Protect the ArgList dtor 2014-04-20 23:59:00 +00:00
ProfileData ProfileData: Treat missing function counts as malformed 2014-04-25 02:45:33 +00:00
Support cl::ParseCommandLineOptions(): Use StringRef to receive sys::path::filename() instead of std::string. 2014-04-23 14:51:23 +00:00
TableGen [C++11] Make use of 'nullptr' in TableGen library. 2014-04-09 04:50:04 +00:00
Target enable fast isel tablegen files for Mips 2014-04-25 18:36:38 +00:00
Transforms This reapplies r207235 with an additional bugfixes caught by the msan 2014-04-25 20:49:25 +00:00
CMakeLists.txt ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00
LLVMBuild.txt ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00
Makefile ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00