itself sometimes negative.

llvm-svn: 47786

llvm-svn: 47777

This pass transforms 

  %struct._Point = type { i32, i32, i32, i32, i32, i32 }
  define internal void @foo(%struct._Point* sret  %agg.result)

into

  %struct._Point = type { i32, i32, i32, i32, i32, i32 }
  define internal %struct._Point @foo()

This pass updates foo() clients appropriately to use
getresult instruction to extract return values.

This pass is not yet ready for prime time.

llvm-svn: 47776

stuff into ParamAttrsList.h.  Per feedback from
ParamAttrs changes.

llvm-svn: 47504

llvm-svn: 47373

llvm-svn: 47371

llvm-svn: 47367

for adding alignment info, not there yet).  Clean up
interfaces to reference ParameterAttributes consistently.

llvm-svn: 47342

requested by Chris.  While there, do the same
for an existing function committed by someone
called "lattner" :)

llvm-svn: 47273

is not passed as an argument to a trampoline intrinsic.

llvm-svn: 47220

llvm-svn: 47066

llvm-svn: 46645

llvm-svn: 46523

llvm-svn: 46514

llvm-svn: 46433

llvm-svn: 46113

promoted functions.  This is important for varargs calls in 
particular.  Thanks to duncan for providing a great testcase.

llvm-svn: 46108

llvm-svn: 46090

llvm-svn: 46045

byval work.  This miscompilation is due to the program indexing an array out
of range and us doing a transformation that broke this.

llvm-svn: 45949

llvm-svn: 45948

difficult to understand the invariants.

llvm-svn: 45947

easier to show that its safe.  No functionality change.

llvm-svn: 45946

llvm-svn: 45932

the inliner pass.  Patch by Robert Zeh.

llvm-svn: 45903

attributes on the vararg call arguments are also dropped.

llvm-svn: 45892

get away with it, which exposes opportunities to eliminate the memory
objects entirely.  For example, we now compile byval.ll to:

define internal void @f1(i32 %b.0, i64 %b.1) {
entry:
	%tmp2 = add i32 %b.0, 1		; <i32> [#uses=0]
	ret void
}

define i32 @main() nounwind  {
entry:
	call void @f1( i32 1, i64 2 )
	ret i32 0
}

This seems like it would trigger a lot for code that passes around small
structs (e.g. SDOperand's or _Complex)...

llvm-svn: 45886

llvm-svn: 45878

llvm-svn: 45877

whether an argument is byval and pass into isSafeToPromoteArgument.

llvm-svn: 45876

llvm-svn: 45875

llvm-svn: 45874

llvm-svn: 45873

incompatibility.

llvm-svn: 45704

direct calls bails out unless caller and callee have essentially
equivalent parameter attributes.  This is illogical - the callee's
attributes should be of no relevance here.  Rework the logic, which
incidentally fixes a crash when removed arguments have attributes.

llvm-svn: 45658

llvm-svn: 45568

llvm-svn: 45516

llvm-svn: 45418

llvm-svn: 45415

when copying functions.

llvm-svn: 45356