llvm-svn: 31099

  jle FOO
  jmp BAR
BAR:

into:

  jle FOO
BAR:

... whoa!

llvm-svn: 31098

llvm-svn: 31097

llvm-svn: 31096

llvm-svn: 31095

1. Remove a bunch of ifdef'd code.
2. When a block just contains an uncond branch, change all blocks branching
   to it to jump to the destination instead.
3. If branch analysis tells us some edges in the machinecfg are not actually
   possible, remove them.

#2 triggers a suprisingly large number of times.

llvm-svn: 31094

llvm-svn: 31093

This is currently disabled by default and limited in several ways, but does
have a positive effect.

llvm-svn: 31090

llvm-svn: 31088

llvm-svn: 31086

llvm-svn: 31074

llvm-svn: 31073

but apparently didn't make it into the final patch.

llvm-svn: 31070

output.

llvm-svn: 31067

llvm-svn: 31065

This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.

llvm-svn: 31063

llvm-svn: 31062

llvm-svn: 31061

llvm-svn: 31059

blocks into the basic block list when lowering the switch inst. into a
binary tree of if-then statements. This allows the "visitSwitchCase" func
to allow for fall-through behavior.

llvm-svn: 31057

and destination sign may not match but other conditions are met.

llvm-svn: 31056

llvm-svn: 31055

llvm-svn: 31054

This fixes llvmAsmParser.cpp miscompile by llvm on PowerPC Darwin.

llvm-svn: 31053

llvm-svn: 31052

llvm-svn: 31049

llvm-svn: 31048

llvm-svn: 31047

llvm-svn: 31046

llvm-svn: 31045

to describe the difference being reported. This assists with understanding
differences an llvm-test and should help with bugpoint too.

llvm-svn: 31044

llvm-svn: 31040

llvm-svn: 31039

llvm-svn: 31038

llvm-svn: 31037

llvm-svn: 31036

llvm-svn: 31035

llvm-svn: 31034

Added workaround for linker bug with linkonce sections.
Changed sections prefix to allow linker merge them
(PE loader doesn't like too much long-named sections :) )
All of this unbreaks libstdc++ on mingw32 allowing (small)
programs to be compiled, linked and run.

llvm-svn: 31033

a better encoding of the targets data layout, rather than trying to guess it
from the endianness and pointersize like before.

Update the generated files.

llvm-svn: 31031