Remove some dead assignements found by scan-build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204013 91177308-0d34-0410-b5e6-96231b3b80d8
Use a fixed subtarget for test so atom scheduling can't change the addresses this test relies on.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204014 91177308-0d34-0410-b5e6-96231b3b80d8
Remove named Twine.

While technically correct, we generally disallow any instance of named
Twines due to their subtlety.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204016 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake][cygming] Disable --out-implib from executables.

It doesn't make sense even with --export-all-symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204017 91177308-0d34-0410-b5e6-96231b3b80d8
Add FIXMEs to use DIScopeRef instead of DIScope for LTO type uniqueing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204019 91177308-0d34-0410-b5e6-96231b3b80d8
Untabify.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204020 91177308-0d34-0410-b5e6-96231b3b80d8
[X86] New and improved VZeroUpperInserter optimization.

- Adds support for inserting vzerouppers before tail-calls.
  This is enabled implicitly by having MachineInstr::copyImplicitOps preserve
  regmask operands, which allows VZeroUpperInserter to see where tail-calls use
  vector registers.

- Fixes a bug that caused the previous version of this optimization to miss some
  vzeroupper insertion points in loops. (Loops-with-vector-code that followed
  loops-without-vector-code were mistakenly overlooked by the previous version).

- New algorithm never revisits instructions.

Fixes <rdar://problem/16228798>



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204021 91177308-0d34-0410-b5e6-96231b3b80d8
Rename PBQP RegAllocSolver local variables to conform to LLVM coding style.

No functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204022 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-readobj: Add test for COFF auxiliary symbols as used by C++/CLI

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204023 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-readobj: Print referred symbol name for CLR token definition

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204024 91177308-0d34-0410-b5e6-96231b3b80d8
Deleted copy-constructor/copy-assignment broke a buildbot. Removing while I
investigate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204025 91177308-0d34-0410-b5e6-96231b3b80d8
Test case

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204026 91177308-0d34-0410-b5e6-96231b3b80d8
DebugInfo: Improve reuse of file table entries in asm debug info

The previous deduping strategy was woefully inadequate - it only
considered the most recent file used and avoided emitting a duplicate in
that case - never considering the a/b/a scenario.

It was also lacking when it came to directory paths as the previous
filename would never match the current if the filename had been split
into file and directory components.

This change builds caching functionality into the line table at the
lowest level in an optional form (a file number of 0 indicates that one
should be chosen and returned) and will eventually be reused by the
normal source level debugging DWARF emission.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204027 91177308-0d34-0410-b5e6-96231b3b80d8
Consider the base pointer for setting the symbol type.

This is really a consistency fix. Since given

a = b

we propagate the information, we should propagate it too given

a = b + (1 - 1)

Fixes pr19145.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204028 91177308-0d34-0410-b5e6-96231b3b80d8
llvm/test/MC/MachO/gen-dwarf-cpp.s: Relax an expression to match DOS pat.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204030 91177308-0d34-0410-b5e6-96231b3b80d8
[C++11] Introduce ObjectFile::symbols() to use range-based loops.

Reviewers: rafael

Reviewed By: rafael

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3081

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204031 91177308-0d34-0410-b5e6-96231b3b80d8
Consistent use of the noduplicate attribute.

The "noduplicate" attribute of call instructions is sometimes queried directly
and sometimes through the cannotDuplicate() predicate. This patch streamlines
all queries to use the cannotDuplicate() predicate. It also adds this predicate
to InvokeInst, to mirror what CallInst has.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204049 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Add generic checks to SIInstrInfo::verifyInstruction()

Added checks for number of operands and operand register classes.

Tested-by: Michel Dänzer <michel.daenzer@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204054 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Use correct dest register class for V_READFIRSTLANE_B32

This instructions writes to an 32-bit SGPR.  This change required adding
the 32-bit VCC_LO and VCC_HI registers, because the full VCC register
is 64 bits.

This fixes verifier errors on several of the indirect addressing piglit
tests.

Tested-by: Michel Dänzer <michel.daenzer@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204055 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Fix implementation of isInlineConstant() used by the verifier

The type of the immediates should not matter as long as the encoding is
equivalent to the encoding of one of the legal inline constants.

Tested-by: Michel Dänzer <michel.daenzer@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204056 91177308-0d34-0410-b5e6-96231b3b80d8