Many distros provide stdc++.dll recently. --enable-embed-stdcxx might confuse people.

llvm-svn: 141875

llvm-svn: 141874

llvm-svn: 141873

llvm-svn: 141872

llvm-svn: 141871

This avoids unnecessary expansion of expressions and allows the SCEV
expander to work on expression DAGs, not just trees.
Fixes PR11090.

llvm-svn: 141870

llvm-svn: 141869

just expression trees.

Partially fixes PR11090. Test case will be with the full fix.

llvm-svn: 141868

llvm-svn: 141867

llvm-svn: 141863

Not having it confused assembly printing of jumptables.

llvm-svn: 141862

release the stack segment and reset the stack pointer. Place the code in its own
MBB to make the verifier happy.

llvm-svn: 141859

http://lab.llvm.org:8011/builders/llvm-x86_64-linux/builds/101

--- Reverse-merging r141854 into '.':
U    test/MC/Disassembler/X86/x86-32.txt
U    test/MC/Disassembler/X86/simple-tests.txt
D    test/CodeGen/X86/bmi.ll
U    lib/Target/X86/X86InstrInfo.td
U    lib/Target/X86/X86ISelLowering.cpp
U    lib/Target/X86/X86.td
U    lib/Target/X86/X86Subtarget.h

llvm-svn: 141857

Should not add instructions to a BB after a return instruction. The machine instruction verifier doesn't like this, nor do I.

llvm-svn: 141856

llvm-svn: 141855

Add X86 TZCNT instruction and patterns to select it. Also added core-avx2 processor which is gcc's name for Haswell.

llvm-svn: 141854

llvm-svn: 141853

llvm-svn: 141851

have the same address as the one we deleted, and we don't want that in the set
yet. Noticed by inspection.

llvm-svn: 141849

llvm-svn: 141844

llvm-svn: 141842

llvm-svn: 141840

Now that MI->getRegClassConstraint() can also handle inline assembly,
don't bail when recomputing the register class of a virtual register
used by inline asm.

This fixes PR11078.

llvm-svn: 141836

Most instructions have some requirements for their register operands.
Usually, this is expressed as register class constraints in the
MCInstrDesc, but for inline assembly the constraints are encoded in the
flag words.

llvm-svn: 141835

llvm-svn: 141834

The inline asm operand constraint is initially encoded in the virtual
register for the operand, but that register class may change during
coalescing, and the original constraint is lost.

Encode the original register class as part of the flag word for each
inline asm operand.  This makes it possible to recover the actual
constraint required by inline asm, just like we can for normal
instructions.

llvm-svn: 141833

llvm-svn: 141831

our current machine instruction defines a register with the same register class
as what's being replaced. This showed up in the SPEC 403.gcc benchmark, where it
would ICE because a tail call was expecting one register class but was given
another. (The machine instruction verifier catches this situation.)
<rdar://problem/10270968>

llvm-svn: 141830

Use a utility from MathExtras to clarify a check and avoid undefined behavior.  Based on patch by Ahmed Charles.

llvm-svn: 141829

The VMAs stored in the symbol table of a MachO file are absolute addresses, not offsets from the section.

llvm-svn: 141828

Use unsigned multiply to hash integers, so we don't end up with undefined behavior for large signed integers.  Based on patch by Ahmed Charles.

llvm-svn: 141827

Removed colons from some target datalayout strings in test, since they don't match the required format.

llvm-svn: 141825

llvm-svn: 141824

sectionContainsSymbol needs to be based on VMA's rather than section indices to properly account for files with segment load commands that contain no sections.

llvm-svn: 141822

Fix a couple hash functions so that they do not depend on undefined shifts.  Based on patch by Ahmed Charles.

llvm-svn: 141820

The disassembler needs to use the AM5 factory methods instead of just
building up the immediate directly.

llvm-svn: 141819

Fix APFloat::getSmallestNormalized so the shift doesn't depend on undefined behavior.  Patch from Ahmed Charles.

llvm-svn: 141818

Fix APFloat::getLargest so that it actually returns the correct value.  Found by accident while reviewing a patch to nearby code.

llvm-svn: 141816

llvm-svn: 141815

for cpp pre-processed assembly we give correct filename and line numbers when
reporting errors in assembly files when using clang and -integrated-as on .s
files. rdar://8998895

llvm-svn: 141814