llvm-svn: 53790

llvm-svn: 53789

llvm-svn: 53788

llvm-svn: 53787

llvm-svn: 53786

llvm-svn: 53784

multiply to be done as unsigned, so that they have well defined
behavior on overflow. This fixes PR2408.

llvm-svn: 53767

replacement of multiple values. This is slightly more efficient
than doing multiple ReplaceAllUsesOfValueWith calls, and theoretically
could be optimized even further. However, an important property of this
new function is that it handles the case where the source value set and
destination value set overlap. This makes it feasible for isel to use
SelectNodeTo in many very common cases, which is advantageous because
SelectNodeTo avoids a temporary node and it doesn't require CSEMap
updates for users of values that don't change position.

Revamp MorphNodeTo, which is what does all the work of SelectNodeTo, to
handle operand lists more efficiently, and to correctly handle a number
of corner cases to which its new wider use exposes it.

This commit also includes a change to the encoding of post-isel opcodes
in SDNodes; now instead of being sandwiched between the target-independent
pre-isel opcodes and the target-dependent pre-isel opcodes, post-isel
opcodes are now represented as negative values. This makes it possible
to test if an opcode is pre-isel or post-isel without having to know
the size of the current target's post-isel instruction set.

These changes speed up llc overall by 3% and reduce memory usage by 10%
on the InstructionCombining.cpp testcase with -fast and -regalloc=local.

llvm-svn: 53728

llvm-svn: 53722

llvm-svn: 53720

llvm-svn: 53719

atomic operation to the new one.

llvm-svn: 53714

Mark function used by asm block as used, otherwise optimizer may not see the use and may delete the function.

llvm-svn: 53692

llvm-svn: 53689

llvm-svn: 53688

llvm-svn: 53661

llvm-svn: 53660

llvm-svn: 53639

llvm-svn: 53585

Added HasABICall and HasAbsoluteCall (equivalent to gcc -mabicall and 
-mno-shared). HasAbsoluteCall is not implemented but HasABICall is the 
default for o32 ABI. Now, both should help into a more accurate 
relocation types implementation. 
Added IsLinux is needed to choose between asm directives.
Instruction name strings cleanup.
AsmPrinter improved.

llvm-svn: 53551

llvm-svn: 53535

llvm-svn: 53505

has exactly one MachineMemOperand, and change some X86 lowering code to
make use of it.

llvm-svn: 53498

instead of using the frame index for the SVOffset, which was
inconsistent.

llvm-svn: 53486

llvm-svn: 53472

llvm-svn: 53471

llvm-svn: 53450

llvm-svn: 53411

his work on legalizetypes.

llvm-svn: 53410

llvm-svn: 53388

llvm-svn: 53386

constant pool, if relocation model is not static. This directly maps to
the way how GCC works.

llvm-svn: 53370

llvm-svn: 53368

llvm-svn: 53365

I cannot test this target, let me know if it breaks!

llvm-svn: 53363

I cannot test this target, let me know if it breaks!

llvm-svn: 53362

llvm-svn: 53360

is X86 ATT only.

llvm-svn: 53355

llvm-svn: 53354

applies to ppc Darwin only.

llvm-svn: 53353