llvm-svn: 48106

in different register classes, e.g. copy of ST(0) to RFP*.  This gets
some really trivial inline asm working that plops things on the top of
stack (PR879)

llvm-svn: 48105

RST -> RFP{32/64/80}.  We only handle ST(0) for now.

llvm-svn: 48104

llvm-svn: 48103

of the LHS expressions is Unknown, the value of the entire expression
does not evaluate to the RHS (as is the case with normal assignments).

llvm-svn: 48102

llvm-svn: 48101

llvm-svn: 48100

Secondly, we have to check whether the branch is actually pointing to the block
with the unwind in it. We could have gotten here because of the unwind_to alone.

llvm-svn: 48099

codegen yet because these can't be spilled (they don't exist until after RA).

llvm-svn: 48098

llvm-svn: 48097

at all.

llvm-svn: 48096

ocamldoc. It does not yet hook into the build system, though.

Patch by Erick Tryzelaar!

llvm-svn: 48095

llvm-svn: 48094

isel'ing value preserving FP roundings from one fp stack reg to another
into a noop, instead of stack traffic.

llvm-svn: 48093

llvm-svn: 48092

llvm-svn: 48091

into a vector of zeros or undef, and when the top part is obviously
zero, we can just use movd + shuffle.  This allows us to compile
vec_set-B.ll into:

_test3:
	movl	$1234567, %eax
	andl	4(%esp), %eax
	movd	%eax, %xmm0
	ret

instead of:

_test3:
	subl	$28, %esp
	movl	$1234567, %eax
	andl	32(%esp), %eax
	movl	%eax, (%esp)
	movl	$0, 4(%esp)
	movq	(%esp), %xmm0
	addl	$28, %esp
	ret

llvm-svn: 48090

llvm-svn: 48089

and also update the cloning interface's major user, the loop optimizations.

llvm-svn: 48088

we weren't processing a statement within a basic block.

llvm-svn: 48087

llvm-svn: 48086

Add the ability to remove just one instance of a BB from a phi node. This fixes
the compile error in the tree now.

llvm-svn: 48085

removal of invoke, PR1269.

llvm-svn: 48084

llvm-svn: 48083

llvm-svn: 48082

llvm-svn: 48081

llvm-svn: 48080

Bug fix: Don't call RemoveDeadBindings more than once (can kill newly generated values to Block-Level Expressions).

llvm-svn: 48079

Rename Directives.cpp -> PPDirectives.cpp since it implements part of the
Preprocessor class.

llvm-svn: 48078

instructions.

llvm-svn: 48077

llvm-svn: 48076

MacroArgs.cpp/h

llvm-svn: 48075

llvm-svn: 48074

llvm-svn: 48073

llvm-svn: 48072

token streams and macro lexing, so a more generic name is useful.

llvm-svn: 48071

involved.

llvm-svn: 48070

llvm-svn: 48069

llvm-svn: 48068

llvm-svn: 48067