instead.

So now: -fast-isel or -fast-isel=true enable fast-isel, and
-fast-isel=false disables it. Fast-isel is also on by default
with -fast, and off by default otherwise.

llvm-svn: 57270

for things like null pointers, which at this level aren't
different from regular integer constants.

llvm-svn: 57265

llvm-svn: 57259

llvm-svn: 57255

llvm-svn: 57249

llvm-svn: 57248

llvm-svn: 57247

llvm-svn: 57243

2006-01-23-UnionInit on x86-64 when inlining is not enabled.

llvm-svn: 57223

ENABLE_EXPENSIVE_CHECKS for finding this.

llvm-svn: 57181

llvm-svn: 57179

llvm-svn: 57148

llvm-svn: 57147

patch by Mikael Lepisto!

llvm-svn: 57077

for llvmc2 incomplete.

llvm-svn: 57076

llvm-svn: 57046

expand to multiple basic blocks, in which case fast-isel
needs to informed of which block to use as it resumes
inserting instructions.

llvm-svn: 57040

was setting kill flags on tied uses in two-address instructions.
The kill flags were causing the allocator to think it could
allocate the use and its tied def in different registers.

llvm-svn: 57039

incidentally making the case where the memop is a
pointer deref work.  Fix cmp-and-swap regression.

llvm-svn: 57027

llvm-svn: 57021

llvm-svn: 57018

isReg, etc., from isRegister, etc.

llvm-svn: 57006

than the type an i1 is promoted to (eg: i8).  Account
for this.  Noticed by Tilmann Scheller on CellSPU; he
will hopefully take care of fixing this in LegalizeDAG
and adding a testcase!

llvm-svn: 56997

It turns out that this is a fairly common operation,
and it's easy enough to handle.

llvm-svn: 56990

sequences like this:
       sete    %al
       testb   %al, %al
       jne     LBB11_1
with this:
       je      LBB11_1

llvm-svn: 56969

can be used when deciding if a block can transfer control to another
via a fall-through instead of a branch.

llvm-svn: 56968

llvm-svn: 56965

Use a multimap rather than a map for holding the list of copies to insert, so we don't lose copies when two of them have
the same source.  I don't know what I was thinking when I wrote this originally.
Note: There's probably a more efficient way to do this, but I need to think about it some more, and about what determinism
guarantees need to be present.

llvm-svn: 56964

llvm-svn: 56963

Contributed by Lang Hames.

llvm-svn: 56959

volatile memory references are safe to move.

llvm-svn: 56948

llvm-svn: 56937

llvm-svn: 56930

llvm-svn: 56927

immediately.

llvm-svn: 56921

llvm-svn: 56919

llvm-svn: 56900

llvm-svn: 56893

Fix a simple error in renumbering kill markaers, that took an inordinant amount of time to track down.

llvm-svn: 56889

- Testcase for r56885.

llvm-svn: 56886