Use a map instead of vector to store line counts.

There are a few motivations for this:
- Using a map allows for checking if line is in map. This differentiates
  unexecutable lines (such as comments) from unexecuted logical lines of
  code. "#####" is now outputted in this case, in line with gcov.
- Source files are no longer read in twice: once when storing the line
  counts, and once when outputting the data.
- Greatly simplifies the function FileInfo::addLineCount().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193264 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed comment typo in GCOVProfiling.cpp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193268 91177308-0d34-0410-b5e6-96231b3b80d8
X86: Custom lower sext v16i8 to v16i16, and the corresponding truncate.

Also update the cost model.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193270 91177308-0d34-0410-b5e6-96231b3b80d8
Reduce casting and use a fully covered switch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193272 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed doxygen comment to match Module.cpp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193273 91177308-0d34-0410-b5e6-96231b3b80d8
Revert "Calling _chkstk is required on ELF as well as COFF on Windows. Without _chkstk functions requiring large stack crash in initialization code. Previous code tested for COFF format but not Mach-O and this patch modifies the code to test for Windows."

This reverts commit r193263.

It is causing CodeGen/X86/mingw-alloca.ll to fail.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193275 91177308-0d34-0410-b5e6-96231b3b80d8
Remove {} from one-line block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193276 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Use multiprocessing based parallelism by default, on Unix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193279 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Stop hacking the GIL check interval.

 - This was never a big win, and is irrelevant now that we commonly use
   multiprocessing based parallelism.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193280 91177308-0d34-0410-b5e6-96231b3b80d8
Actually switch the default to use multiprocessing

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193282 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: code clean up.

Unifying the argument ordering of private construct functions in CompileUnit to
follow constructTypeDIE(DIE &, DIBasicType),
constructTypeDIE(DIE &, DIDerivedType), constructTypeDIE(DIE &, DICompositeType),
constructSubrangeDIE and constructArrayTypeDIE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193284 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: code clean up.

Remove the unneeded return values from createMemberDIE, constructEnumTypeDIE,
getOrCreateTemplateTypeParameterDIE, and getOrCreateTemplateValueParameterDIE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193285 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: code clean up.

Rename createMemberDIE to constructMemberDIE to match other construct functions
in CompileUnit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193286 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: code clean up.

Since we never insert DIE for DITemplateTypeParameter to a map, there is no need
to call getDIE in getOrCreateTemplateTypeParameterDIE. It is also renamed to
constructTemplateTypeParameterDIE to match with other construct functions
in CompileUnit.

Same applies to getOrCreateTemplateValueParameterDIE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193287 91177308-0d34-0410-b5e6-96231b3b80d8
(this is a corrected patch)

Calling _chkstk is required on ELF as well as COFF on Windows. Without 
_chkstk, functions requiring large stack crash in initialization code.

Previous code tested for COFF format but not Mach-O and this patch modifies 
the code to test for Windows OS (both Windows target and MingW target) 
but not Mach-O object format: Looks like macho environment was used to 
build some EFI code.
 
Credits to Andrew MacPherson.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193289 91177308-0d34-0410-b5e6-96231b3b80d8
Optimizing MCJIT module state tracking

Patch co-developed with Yaron Keren.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193291 91177308-0d34-0410-b5e6-96231b3b80d8
Clarify comments in genLoopLimit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193292 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed llvm-cov to count edges instead of blocks.

This was a fundamental flaw in llvm-cov where it treated the values in
the GCDA files as block counts instead of edge counts. This created
incorrect line counts when branching was present. Instead, the edge
counts should be summed to obtain the correct block count.

The fix was tested using custom test files as well as single source
files from the test-suite directory. The behaviour can be verified by
reading the GCOV documentation that describes the GCDA spec ("ARC_COUNTS
gives the counter values for those arcs that are instrumented") and the
header description provided by GCOVProfiling.cpp ("instruments the code
that runs to records (sic) the edges between blocks that run and emit a
complementary "gcda" file on exit").

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193299 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a bug in LinearFunctionTestReplace that created invalid loop exit checks.

Reviewed by Andy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193303 91177308-0d34-0410-b5e6-96231b3b80d8
Add tests for SSE intrinsics in non-avx mode by copying from the AVX test cases. Some of these may have been tested by other tests, but most weren't. Patch by Cameron McInally.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193309 91177308-0d34-0410-b5e6-96231b3b80d8