ABI. The missing piece is support for putting "homogeneous aggregates"
into registers.

Patch by Sandeep Patel!

llvm-svn: 73095

llvm-svn: 73085

llvm-svn: 73080

llvm-svn: 73075

llvm-svn: 73017

on x86 to handle more cases.  Fix a bug in said code that would cause it 
to read past the end of an object.  Rewrite the code in 
SelectionDAGLegalize::ExpandBUILD_VECTOR to be a bit more general. 
Remove PerformBuildVectorCombine, which is no longer necessary with 
these changes.  In addition to simplifying the code, with this change, 
we can now catch a few more cases of consecutive loads.

llvm-svn: 73012

instructions.

llvm-svn: 73009

llvm-svn: 72991

nodes for vectors with an i16 element type.  Add an optimization for 
building a vector which is all zeros/undef except for the bottom 
element, where the bottom element is an i8 or i16.

llvm-svn: 72988

llvm-svn: 72987

llvm-svn: 72986

llvm-svn: 72985

conversions for x86, like <2 x i32> -> <2 x float> and <4 x i16> -> 
<4 x float>.

llvm-svn: 72983

llvm-svn: 72969

Update code generator to use this attribute and remove NoImplicitFloat target option.
Update llc to set this attribute when -no-implicit-float command line option is used.

llvm-svn: 72959

build vectors with i64 elements will only appear on 32b x86 before legalize.
Since vector widening occurs during legalize, and produces i64 build_vector 
elements, the dag combiner is never run on these before legalize splits them
into 32b elements.

Teach the build_vector dag combine in x86 back end to recognize consecutive 
loads producing the low part of the vector.

Convert the two uses of TLI's consecutive load recognizer to pass LoadSDNodes
since that was required implicitly.

Add a testcase for the transform.

Old:
	subl	$28, %esp
	movl	32(%esp), %eax
	movl	4(%eax), %ecx
	movl	%ecx, 4(%esp)
	movl	(%eax), %eax
	movl	%eax, (%esp)
	movaps	(%esp), %xmm0
	pmovzxwd	%xmm0, %xmm0
	movl	36(%esp), %eax
	movaps	%xmm0, (%eax)
	addl	$28, %esp
	ret

New:
	movl	4(%esp), %eax
	pmovzxwd	(%eax), %xmm0
	movl	8(%esp), %eax
	movaps	%xmm0, (%eax)
	ret

llvm-svn: 72957

Changing allocation ordering from r3 ... r0 back to r0 ... r3. The order change no longer make sense after the coalescing changes we have made since then.

llvm-svn: 72955

llvm-svn: 72954

llvm-svn: 72952

llvm-svn: 72950

llvm-svn: 72948

llvm-svn: 72942

a few lines later on.

llvm-svn: 72904

`-fomit-frame-pointer', we would lack the DW_CFA_advance_loc information for a
lot of function, and then they would be `0'. The linker (at least on Darwin)
needs to encode the stack size. In some cases, the stack size is too large to
directly encode. So the linker checks to see if there is a "subl $xxx,%esp"
instruction at the point where the `DW_CFA_def_cfa_offset' says the pc was. If
so, the compact encoding records the offset in the function to where the stack
size is embedded. But because the `DW_CFA_advance_loc' instructions are missing,
it looks before the function and dies.

So, instead of emitting the EH debug label before the stack adjustment
operations, emit it afterwards, right before the frame move stuff.

llvm-svn: 72898

integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt

llvm-svn: 72897

Update code generator to use this attribute and remove DisableRedZone target option.
Update llc to set this attribute when -disable-red-zone command line option is used.

llvm-svn: 72894

using Promote which won't work because i64 isn't
a legal type.  It's easy enough to use Custom, but
then we have the problem that when the type
legalizer is promoting FP_TO_UINT->i16, it has no
way of telling it should prefer FP_TO_SINT->i32
to FP_TO_UINT->i32.  I have uncomfortably hacked
this by making the type legalizer choose FP_TO_SINT
when both are Custom.
This fixes several regressions in the testsuite.

llvm-svn: 72891

llvm-svn: 72866

llvm-svn: 72861

the code tried to use "push", which doesn't exist for XMM registers.)

llvm-svn: 72836

llvm-svn: 72830

Re-apply 72756 with fixes. One of those was introduced by we changed MachineInstrBuilder::addReg() interface.

llvm-svn: 72826

llvm-svn: 72817

llvm-svn: 72808

For Darwin / x86_64, override -relocation-model=static to pic if the output is assembly since Darwin assembler does not really support -static codeine.

I view this as a temporary workaround until the assembler / linker changes.

llvm-svn: 72806

carry GlobalBaseReg, and GlobalRetAddr too in Alpha's case. This
eliminates the need for them to search through the
MachineRegisterInfo livein list in order to identify these
virtual registers. EmitLiveInCopies is now the only user of the
virtual register portion of MachineRegisterInfo's livein data.

llvm-svn: 72802

with an accessor method which simply casts the parent class
SelectionDAGISel's TM to the target-specific type.

llvm-svn: 72801

that puts a new warning in).

llvm-svn: 72797

llvm-svn: 72782

Emit file directives correctly in case of a .bc is generated by llvm-ld after linking in several .bc files.

llvm-svn: 72781