llvm-svn: 45825

inferred from the instr patterns.

llvm-svn: 45824

llvm-svn: 45823

llvm-svn: 45822

llvm-svn: 45821

llvm-svn: 45819

instructions (with patterns) that load memory marked, for example.

llvm-svn: 45818

Also, instructions with any nodes that are SDNPMayLoad also read memory.

llvm-svn: 45817

or being side-effect free.

llvm-svn: 45816

llvm-svn: 45815

llvm-svn: 45814

llvm-svn: 45813

Add a isImmutable bit to StackObject. Fixed stack objects are immutable (in the function) unless specified otherwise.

llvm-svn: 45812

because assembler/linker can't cope with weak absolutes.
PR 1880.

llvm-svn: 45811

MachineRegisterInfo.  Once all clients are switched over, the former will be going away.

llvm-svn: 45805

The first only returns definitions of a register, the second only
returns uses, the third returns both.

llvm-svn: 45803

copies is made.

llvm-svn: 45799

Do not use the stack pointer directly, issue a copyfromreg instead. Otherwise we can end up with something like ADD32ri %esp, x which two-address pass won't like.

llvm-svn: 45798

llvm-svn: 45797

than hardware supported type will be scalarized, so we
can infer their alignment from that info.

We now codegen pr1845 into:

_boolVectorSelect:
	lbz r2, 0(r3)
	stb r2, -16(r1)
	blr 

llvm-svn: 45796

llvm-svn: 45795

llvm-svn: 45792

llvm-svn: 45791

llvm-svn: 45787

Clean up StrongPHIElimination a bit, and add some more comments to the internal structures.  There's
still more work to do on this front.

llvm-svn: 45783

llvm-svn: 45781

llvm-svn: 45780

llvm-svn: 45775

llvm-svn: 45774

llvm-svn: 45773

llvm-svn: 45772

llvm-svn: 45770

llvm-svn: 45768

llvm-svn: 45766

void test(long long *P) { *P ^= 1; }

into just:

_test:
	movl	4(%esp), %eax
	xorl	$1, (%eax)
	ret

instead of code like this:

_test:
	movl	4(%esp), %ecx
        xorl    $1, (%ecx)
	movl	4(%ecx), %edx
	movl	%edx, 4(%ecx)
	ret

llvm-svn: 45762

llvm-svn: 45759

llvm-svn: 45758

Made the ctor for ImmutableMap to construct a map from an AVL tree public.

llvm-svn: 45756

llvm-svn: 45752

This is currently not set by anything.

llvm-svn: 45748