llvm-svn: 67758

llvm-svn: 67750

llvm-svn: 67744

llvm-svn: 67742

llvm-svn: 67740

llvm-svn: 67739

llvm-svn: 67738

llvm-svn: 67737

llvm-svn: 67736

llvm-svn: 67729

  %a = ...
  %b = and i32 %a, 2
  %c = srl i32 %b, 1
  %d = br i32 %c, 

into

  %a = ...
  %b = and %a, 2
  %c = X86ISD::CMP %b, 0
  %d = X86ISD::BRCOND %c ...

This applies only when the AND constant value has one bit set and the SRL
constant is equal to the log2 of the AND constant. The back-end is smart enough
to convert the result into a TEST/JMP sequence.

llvm-svn: 67728

llvm-svn: 67727

called from llc, not opt, but it's an IR level
optimization nevertheless.)

llvm-svn: 67724

Before deleting a basic block, give other loop passes a chance cleanup analysis values, related to the instructions in the basic block.

llvm-svn: 67719

register classes. Before, MVT::Other would be returned anytime a reg was
in multiple register classes. Now, MVT::Other is only returned if the types
for those register classes differ.

llvm-svn: 67714

llvm-svn: 67702

Also fixes SDISel so it *does not* force promote return value if the function is not marked signext / zeroext.

llvm-svn: 67701

llvm-svn: 67694

stoppoint nodes around until Legalize; doing this
imposed an ordering on a sequence of loads that
came from different lines, interfering with scheduling.

llvm-svn: 67692

llvm-svn: 67691

llvm-svn: 67689

llvm-svn: 67688

call, we should treat "i64 zext" as the start of a constant expr, but
"i64 0 zext" as an argument with an obsolete attribute on it (this form
is already tested by test/Assembler/2007-07-30-AutoUpgradeZextSext.ll).

Make the autoupgrade logic more discerning to avoid treating "i64 zext"
as an old-style attribute, causing us to reject a valid constant expr.
This fixes PR3876.

llvm-svn: 67682

llvm-svn: 67681

Do not ignore DW_TAG_class_type!

llvm-svn: 67675

llvm-svn: 67669

llvm-svn: 67668

llvm-svn: 67667

not going to persue this further at this time.

llvm-svn: 67666

precise than it used to be.

llvm-svn: 67662

llvm-svn: 67661

llvm-svn: 67658

llvm-svn: 67657

llvm-svn: 67656

autoconf directory, but these paths need to be relative to the main
source directory.

llvm-svn: 67655

llvm-svn: 67654

llvm-svn: 67652

The configure line had --disable-bootstrap, but it was not
clear that this is essential.

llvm-svn: 67651

llvm-svn: 67649

llvm-svn: 67647