This currently only catches the most basic case, a two-case switch, but can be
extended later.

llvm-svn: 119964

is never used.  Patch by Cameron Zwarich.

llvm-svn: 119963

when assertions are disabled.

llvm-svn: 119962

that branch tables are special.

llvm-svn: 119954

Implement ELF object file writing support for the MBlaze backend. Its not perfect yet, but it works for many tests.

llvm-svn: 119952

llvm-svn: 119951

32-bit immediate values.

llvm-svn: 119950

fill a delay slot are moved to fill a different delay slot.

llvm-svn: 119949

llvm-svn: 119948

llvm-svn: 119947

Initialize MemDep's TD member so buildbots don't trip over an uninitialized pointer (TD is passed to PHITransAddr).

I wonder why this didn't explode earlier.

llvm-svn: 119944

folding improvements: if P points to a type of size zero, turn "gep P, N" into "P".
More generally, if a gep index type has size zero, instcombine could replace the
index with zero, but that is not done here.

llvm-svn: 119942

llvm-svn: 119941

llvm-svn: 119940

llvm-svn: 119938

the code to not add a "condition code" if it's trap.

llvm-svn: 119937

- Add comments saying where the encodings for other instructions came from.

llvm-svn: 119936

zero sized elements.  This allows us to compile:

  #include <string>
  void foo() { std::string s; }

into an empty function.

llvm-svn: 119933

llvm-svn: 119932

when transfering between i64 gprs and mmx regs.

llvm-svn: 119931

method in MemDep instead of inserting an instruction, doing a query,
then removing it.  Neither operation is effectively cached.

llvm-svn: 119930

llvm-svn: 119929

destination location of a memcpy/memmove.  I'm not clear about whether
TBAA works on these, so I'm leaving it out for now.  Dan, please revisit
this when convenient.

llvm-svn: 119928

llvm-svn: 119927

llvm-svn: 119926

llvm-svn: 119925

llvm-svn: 119923

void a(int x) { if (((1<<x)&8)==0) b(); }

into "x != 3", which occurs over 100 times in 403.gcc but in no
other program in llvm-test.

llvm-svn: 119922

llvm-svn: 119920

llvm-svn: 119918

llvm-svn: 119917

allowing the memcpy to be eliminated.

Unfortunately, the requirements on byval's without explicit 
alignment are really weak and impossible to predict in the 
mid-level optimizer, so this doesn't kick in much with current
frontends.  The fix is to change clang to set alignment on all
byval arguments.

llvm-svn: 119916

requirement on the input pointer.

llvm-svn: 119914

llvm-svn: 119913

mode variables. Handle frame indexes in load/store and allocas again.

llvm-svn: 119912

to match the one from the load emitter above.

llvm-svn: 119911

llvm-svn: 119908

llvm-svn: 119907

llvm-svn: 119905

llvm-svn: 119904