Do not try to descend into optional build directories if they do not
exist.  This makes the build logic symmetric for both the in tree and
out of tree cases.

llvm-svn: 126070

of testing for its presence at cmake time.

This way the build automatically regenerates the makefiles when a svn
update brings in a new sublibrary.

llvm-svn: 126068

llvm-svn: 126065

the instruction passed in.  Make sure to account for this correctly, instead
of looping infinitely.

llvm-svn: 126058

llvm-svn: 126054

of libxul from 12m31.084s to 7m1.359s.

llvm-svn: 126052

bot. I am not sure if this is valid Valgrind exclusion file syntax, but the
Internet seems to think so.

llvm-svn: 126051

This is reasonable to do since all bt-mem forms do the
same thing.

llvm-svn: 126047

constant, including globals.  This makes us generate much more "pretty" pattern
globals as well because it doesn't break it down to an array of bytes all the
time.

This enables us to handle stores of relocatable globals.  This kicks in about
48 times in 254.gap, giving us stuff like this:

@.memset_pattern40 = internal constant [2 x %struct.TypHeader* (%struct.TypHeader*, %struct.TypHeader*)*] [%struct.TypHeader* (%struct.TypHeader*, %struct
.TypHeader*)* @IsFalse, %struct.TypHeader* (%struct.TypHeader*, %struct.TypHeader*)* @IsFalse], align 16

...
  call void @memset_pattern16(i8* %scevgep5859, i8* bitcast ([2 x %struct.TypHeader* (%struct.TypHeader*, %struct.TypHeader*)*]* @.memset_pattern40 to i8*
), i64 %tmp75) nounwind

llvm-svn: 126044

them as splat values.

llvm-svn: 126041

unsplatable values into memset_pattern16 when it is available
(recent darwins).  This transforms lots of strided loop stores
of ints for example, like 5 in vpr:

  Formed memset:   call void @memset_pattern16(i8* %4, i8* getelementptr inbounds ([16 x i8]* @.memset_pattern9, i32 0, i32 0), i64 %tmp25)
    from store to: {%3,+,4}<%11> at:   store i32 3, i32* %scevgep, align 4, !tbaa !4

llvm-svn: 126040

up add_clang_unittest's calling convention.

llvm-svn: 126031

confident enough that he knows what he is doing.

llvm-svn: 126019

llvm-svn: 126018

Add ImmutableMap methods 'manualRetain()', 'manualRelease()', and 'getRootWithoutRetain()' to help more aggressively reclaim memory in the static analyzer.

llvm-svn: 126011

Do not emit empty DW_TAG_lexical_block DIEs.  In one test case, size of debug info reduced by almost 7%.

llvm-svn: 126009

llvm-svn: 126008

llvm-svn: 126005

llvm-svn: 126004

llvm-svn: 126003

llvm-svn: 126002

llvm-svn: 126001

Patch by Kaelyn Uhrain!

llvm-svn: 126000

(This is infact direct copy from DIFactory, which is disappearing soon.)

llvm-svn: 125989

llvm-svn: 125988

llvm-svn: 125987

llvm-svn: 125986

Do not lose debug info of an inlined function argument even if the argument is only used through GEPs.
This time with a fix that avoids using invalidated DenseMap iterator.

llvm-svn: 125984

need to be pulled out of the pass manager when the user specifies 
-fno-builtin.  It can intelligently determine which libcalls to
optimize based on what is enabled in TargetLibraryInfo.  This 
allows -fno-builtin-foo to work someday.

llvm-svn: 125981

All new virtual registers created for spilling or splitting point back to their original.

llvm-svn: 125980

llvm-svn: 125978

to hack on memset, memcpy etc.

llvm-svn: 125974

llvm-svn: 125973

llvm-svn: 125972

with a triple.

llvm-svn: 125970

llvm-svn: 125969

llvm-svn: 125968

The rewriter works almost identically to -rewriter=trivial, except it also
eliminates any identity copies.

This makes the new register allocators independent of VirtRegRewriter.cpp which
will be going away at the same time as RegAllocLinearScan.

llvm-svn: 125967

Add FixedLenDecoderEmitter, the skeleton of a new disassembler emitter for fixed-length instruction encodings.
A major part of its (eventual) goal is to support a much cleaner separation between disassembly callbacks
provided by the target and the disassembler emitter itself, i.e. not requiring hardcoding of knowledge in tblgen
like the existing disassembly emitters do.

The hope is that some day this will allow us to replace the existing non-Thumb ARM disassembler and remove
some of the hacks the old one introduced to tblgen.

llvm-svn: 125966

query about available library functions.  For now this just has 
memset_pattern16, which exists on darwin, but it can be extended for a 
bunch of other things in the future.

llvm-svn: 125965