with multiplication by constants distributed through, occasionally
those subexpressions can include both x and -x. For now, if this
condition is discovered within LSR, just prune such cases away,
as they won't be profitable. This fixes a "zero allocated in a
base register" assertion failure.

llvm-svn: 96177

1. restore these across direct/indirect calls.
2. restore pagesel for any macros with gotos.

llvm-svn: 96175

llvm-svn: 96174

llvm-svn: 96172

Otherwise AT&T asm printer is used with non-compatible MCAsmInfo and
there is no way to override this behaviour.

llvm-svn: 96165

as suggested by Bob Wilson.

llvm-svn: 96153

the no-TLI case. But it should still default to declining the
transformation.

llvm-svn: 96152

current insertion point, advance the current insertion point.
This avoids a use-before-def situation in a testcase extracted
from clang which is difficult to reduce to a reasonable-sized
regression test.

llvm-svn: 96151

to override anything from the parent class.

llvm-svn: 96150

intended to be subclassed.

llvm-svn: 96149

because profitability can't be sufficiently approximated.

llvm-svn: 96148

llvm-svn: 96143

from opt.

llvm-svn: 96135

odd offsets since the bitcasted pointer size and the offset pointer
size are going to be different types for the GEP vs base object.

llvm-svn: 96134

Some tools do not like the '-option parameter' form. Should this be
configurable?

llvm-svn: 96130

We really need a conditional compilation mechanism...

llvm-svn: 96129

llvm-svn: 96128

llvm-svn: 96127

llvm-svn: 96126

class out of line.

llvm-svn: 96113

encoding them into nothing.

llvm-svn: 96110

llvm-svn: 96109

--
ddunbar@ozzy:tmp$ clang -m32 -integrated-as hello.c && ./a.out
hello world!
--

llvm-svn: 96096

llvm-svn: 96095

llvm-svn: 96094

llvm-svn: 96093

MCAssembler: Switch MCFillFragment to only taking constant values. Symbolic expressions can always be emitted as data + fixups.

llvm-svn: 96092

llvm-svn: 96091

llvm-svn: 96090

llvm-svn: 96089

llvm-svn: 96088

and add a doxygen comment.

Cache the phi entry to avoid doing tons of 
PHINode::getBasicBlockIndex calls in the common case.

On my insane testcase from re2c, this speeds up CGP from
617.4s to 7.9s (78x).

llvm-svn: 96083

llvm-svn: 96081

to a PHI, avoid it in the common case where the BB occurs
in the same index for multiple phis.  This speeds up CGP on
an insane testcase from 8.35 to 3.58s.

llvm-svn: 96080

using pred_begin/end.  It is much faster.

llvm-svn: 96079

instead of with pred_begin/end.

llvm-svn: 96078

llvm-svn: 96076

llvm-svn: 96075

tables.

llvm-svn: 96073

When coalescing with a physreg, remember to add imp-def and imp-kill when
dealing with sub-registers.

Also fix a related bug in VirtRegRewriter where substitutePhysReg may
reallocate the operand list on an instruction and invalidate the reg_iterator.
This can happen when a register is mentioned twice on the same instruction.

llvm-svn: 96072