Made LEA memory operands emit only 4 MCInst operands.
Made the scale operand equal 1 for instructions that have no
SIB byte.

llvm-svn: 91919

llvm-svn: 91918

load is needed when we have a small store into a large alloca (at which 
point we get a load/insert/store sequence), but when you do a full-sized
store, this load ends up being dead.

This dead load is bad in really large nasty testcases where the load ends
up causing mem2reg to insert large chains of dependent phi nodes which only
ADCE can delete.  Instead of doing this, just don't insert the dead load.

This fixes rdar://6864035

llvm-svn: 91917

llvm-svn: 91916

llvm-svn: 91914

"indirect" operand is not a pointer.

llvm-svn: 91913

Remove target attribute break-sse-dep. Instead, do not fold load into sse partial update instructions unless optimizing for size.

llvm-svn: 91910

llvm-svn: 91908

While converting one of the operands to a memory operand, we need to check if it is Legal and does not result into a cyclic dep.

llvm-svn: 91904

llvm-svn: 91901

llvm-svn: 91900

simple-tests.txt:16:1: error: invalid instruction
0xff 0xff
^

llvm-svn: 91898

missing check that an array reference doesn't go past the end of the array,
and remove some redundant checks for in-bound array and vector references
that are no longer needed.

llvm-svn: 91897

data on them, for example:

	addb	%al, (%rax)
simple-tests.txt:11:5: error: excess data detected in input
0 0 0 0 0 
    ^

llvm-svn: 91896

to not produce caret diagnostics, you were right!

llvm-svn: 91895

comments.  Also, check in a simple testcase for the disassembler,
including a test for r91864

llvm-svn: 91894

llvm-svn: 91892

by merging all returns in a function into a single one, but simplifycfg 
currently likes to duplicate the return (an unfortunate choice!)

llvm-svn: 91890

llvm-svn: 91889

llvm-svn: 91886

instead of stored.  This reduces memdep memory usage, and also eliminates a bunch of
weakvh's.  This speeds up gvn on gcc.c-torture/20001226-1.c from 23.9s to 8.45s (2.8x)
on a different machine than earlier.

llvm-svn: 91885

return partial registers. This affected the back-end lowering code some.

Also patch up some places I missed before in the "get" functions.

llvm-svn: 91880

with symbols in AuroraUX's global namespace.

llvm-svn: 91879

llvm-svn: 91878

llvm-svn: 91877

llvm-svn: 91876

llvm-svn: 91875

llvm-svn: 91873

generic copy functions.

llvm-svn: 91872

X86 codegen that were causing circular symbol dependencies.

llvm-svn: 91871

a call.  This speeds up memdep ~1.5%

llvm-svn: 91869

llvm-svn: 91867

llvm-svn: 91866

get things like this out of the disassembler:

0x100000ecb: callq	-96

instead of:

0x100000ecb: callq	4294967200

rdar://7491123

llvm-svn: 91864

llvm-svn: 91863

SDNodes. This time in the load/store and limited-precision code.

llvm-svn: 91860

This fixes an in-place update bug where code inserted at the end of basic blocks may not be covered by existing intervals which were live across the entire block. It is also consistent with the way ranges are specified for live intervals.

llvm-svn: 91859

assign the ordering when called. Combine some of the ordering assignments to
keep things simple.

llvm-svn: 91857

llvm-svn: 91853

load to avoid even messing around with SSAUpdate at all.  In this case (which
is very common, we can just use the input value directly).

This speeds up GVN time on gcc.c-torture/20001226-1.c from 36.4s to 16.3s,
which still isn't great, but substantially better and this is a simple speedup
that applies to lots of different cases.

llvm-svn: 91851