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Commit Graph

3219 Commits

Author SHA1 Message Date
Evan Cheng
1b08bbca55 Remove the nasty LABEL hack with a much less evil one. Now llvm.dbg.func.start implies a stoppoint is set. SelectionDAGISel records a new source line but does not create a ISD::LABEL node for this special stoppoint. Asm printer will magically print this label. This ensures nothing is emitted before.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46635 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-01 09:10:45 +00:00
Evan Cheng
334dc1f58d Revert 46556 and 46585. Dan please fix the PseudoSourceValue problem and re-commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46623 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-31 21:00:00 +00:00
Evan Cheng
bb81d97feb Add an extra operand to LABEL nodes which distinguishes between debug, EH, or misc labels. This fixes the EH breakage. However I am not convinced this is *the* solution.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46609 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-31 09:59:15 +00:00
Evan Cheng
c67aa7cbd5 Add x86 specific getFrameIndexOffset(). This fixes local variable debugging info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46598 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-31 04:06:00 +00:00
Dan Gohman
bbfb9c57c7 Avoid unnecessarily casting away const.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46590 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-31 01:01:48 +00:00
Dan Gohman
1a0248690a Rename ISD::FLT_ROUNDS to ISD::FLT_ROUNDS_ to avoid conflicting
with the real FLT_ROUNDS (defined in <float.h>).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46587 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-31 00:41:03 +00:00
Dan Gohman
c6c391dadd Create a new class, MemOperand, for describing memory references
in the backend. Introduce a new SDNode type, MemOperandSDNode, for
holding a MemOperand in the SelectionDAG IR, and add a MemOperand
list to MachineInstr, and code to manage them. Remove the offset
field from SrcValueSDNode; uses of SrcValueSDNode that were using
it are all all using MemOperandSDNode now.

Also, begin updating some getLoad and getStore calls to use the
PseudoSourceValue objects.

Most of this was written by Florian Brander, some
reorganization and updating to TOT by me.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46585 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-31 00:25:39 +00:00
Evan Cheng
965d1b4bba Treat the label for the first @llvm.dbg.stoppoint the same way as the dbg_func_start label. Make sure nothing else is inserted before them.
Note this solution might be somewhat fragile since ISD::LABEL may be used for other
purposes. If that ends up to be an issue, we may need to introduce a different node
for debug labels.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46571 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-30 20:08:35 +00:00
Evan Cheng
ff9b373e8f Even though InsertAtEndOfBasicBlock is an ugly hack it still deserves a proper name. Rename it to EmitInstrWithCustomInserter since it does not necessarily insert
instruction at the end.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46562 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-30 18:18:23 +00:00
Evan Cheng
d2c860cef1 Skip over the label which marks the beginning of the function before inserting prologue code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46546 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-30 03:57:33 +00:00
Evan Cheng
0d9e976ad2 Work in progress. This patch *fixes* x86-64 calls which are modelled as StructRet but really should be return in registers, e.g. _Complex long double, some 128-bit aggregates. This is a short term solution that is necessary only because llvm, for now, cannot model i128 nor call's with multiple results.
Status: This only works for direct calls, and only the caller side is done. Disabled for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46527 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29 19:34:22 +00:00
Dale Johannesen
ba2a0b960e Handle 'X' constraint in asm's better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46485 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29 02:21:21 +00:00
Chris Lattner
f6b935d8e6 add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46413 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27 07:31:41 +00:00
Chris Lattner
71d07a0dac Use fldz and fld1 for long double constants instead of a constant pool load.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46411 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27 06:19:31 +00:00
Chris Lattner
4d53049c92 Add some notes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46405 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26 20:12:07 +00:00
Chris Lattner
ba96fbc164 Remove some code for inferring alignment info from the x86 backend
now that the dag combiner does it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46404 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26 20:07:42 +00:00
Bill Wendling
824a721560 If there's no instructions being emitted on X86 for a function, emit a
nop. Emit the nop directly for PPC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46398 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26 09:03:52 +00:00
Chris Lattner
6cf73267c6 optimize fxor like for
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46345 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-25 06:14:17 +00:00
Chris Lattner
af723b9ae4 Add target-specific dag combines for FAND(x,0) and FOR(x,0). This allows
us to compile:

double test(double X) {
  return copysign(0.0, X);
}

into:

_test:
	andpd	LCPI1_0(%rip), %xmm0
	ret

instead of:
_test:
	pxor	%xmm1, %xmm1
	andpd	LCPI1_0(%rip), %xmm1
	movapd	%xmm0, %xmm2
	andpd	LCPI1_1(%rip), %xmm2
	movapd	%xmm1, %xmm0
	orpd	%xmm2, %xmm0
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46344 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-25 05:46:26 +00:00
Anton Korobeynikov
8eea339298 Provide correct DWARF register numbering for debug information emission on x86-32/Darwin.
This should fix bunch of issues.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46337 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-25 00:34:13 +00:00
Chris Lattner
d43d00cf3a Significantly simplify and improve handling of FP function results on x86-32.
This case returns the value in ST(0) and then has to convert it to an SSE
register.  This causes significant codegen ugliness in some cases.  For 
example in the trivial fp-stack-direct-ret.ll testcase we used to generate:

_bar:
	subl	$28, %esp
	call	L_foo$stub
	fstpl	16(%esp)
	movsd	16(%esp), %xmm0
	movsd	%xmm0, 8(%esp)
	fldl	8(%esp)
	addl	$28, %esp
	ret

because we move the result of foo() into an XMM register, then have to
move it back for the return of bar.

Instead of hacking ever-more special cases into the call result lowering code
we take a much simpler approach: on x86-32, fp return is modeled as always 
returning into an f80 register which is then truncated to f32 or f64 as needed.
Similarly for a result, we model it as an extension to f80 + return.

This exposes the truncate and extensions to the dag combiner, allowing target
independent code to hack on them, eliminating them in this case.  This gives 
us this code for the example above:

_bar:
	subl	$12, %esp
	call	L_foo$stub
	addl	$12, %esp
	ret

The nasty aspect of this is that these conversions are not legal, but we want
the second pass of dag combiner (post-legalize) to be able to hack on them.
To handle this, we lie to legalize and say they are legal, then custom expand
them on entry to the isel pass (PreprocessForFPConvert).  This is gross, but
less gross than the code it is replacing :)

This also allows us to generate better code in several other cases.  For 
example on fp-stack-ret-conv.ll, we now generate:

_test:
	subl	$12, %esp
	call	L_foo$stub
	fstps	8(%esp)
	movl	16(%esp), %eax
	cvtss2sd	8(%esp), %xmm0
	movsd	%xmm0, (%eax)
	addl	$12, %esp
	ret

where before we produced (incidentally, the old bad code is identical to what
gcc produces):

_test:
	subl	$12, %esp
	call	L_foo$stub
	fstpl	(%esp)
	cvtsd2ss	(%esp), %xmm0
	cvtss2sd	%xmm0, %xmm0
	movl	16(%esp), %eax
	movsd	%xmm0, (%eax)
	addl	$12, %esp
	ret

Note that we generate slightly worse code on pr1505b.ll due to a scheduling 
deficiency that is unrelated to this patch.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46307 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-24 08:07:48 +00:00
Evan Cheng
2928650262 Let each target decide byval alignment. For X86, it's 4-byte unless the aggregare contains SSE vector(s). For x86-64, it's max of 8 or alignment of the type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46286 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-23 23:17:41 +00:00
Duncan Sands
f9c98e650d The last pieces needed for loading arbitrary
precision integers.  This won't actually work
(and most of the code is dead) unless the new
legalization machinery is turned on.  While
there, I rationalized the handling of i1, and
removed some bogus (and unused) sextload patterns.
For i1, this could result in microscopically
better code for some architectures (not X86).
It might also result in worse code if annotating
with AssertZExt nodes turns out to be more harmful
than helpful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46280 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-23 20:39:46 +00:00
Dale Johannesen
25edeb32e7 Honor explicit section information on Darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46267 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-23 00:58:14 +00:00
Evan Cheng
2cbdd27305 SSE varargs arguments are passed in memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46262 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-22 23:26:53 +00:00
Anton Korobeynikov
ea74c7e498 Honour ByVal parameter attribute for name decoration
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46200 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-20 14:00:07 +00:00
Anton Korobeynikov
99e635ca69 Remove Darwin'ism
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46199 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-20 13:59:37 +00:00
Anton Korobeynikov
49964d6847 Enable PIC codegen on x86-64/linux
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46198 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-20 13:58:16 +00:00
Duncan Sands
4bdad51596 Need to handle any 'nest' parameter before integer
parameters, since otherwise it won't be passed in
the right register.  With this change trampolines
work on x86-64 (thanks to Luke Guest for providing
access to an x86-64 box).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46192 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-19 16:42:10 +00:00
Chris Lattner
3d66185ff8 make a method public
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46159 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-18 06:52:41 +00:00
Dale Johannesen
d15d086956 Revert the part of 45848 that treated weak globals
as weak globals rather than commons.  While not wrong,
this change tickled a latent bug in Darwin's strip,
so revert it for now as a workaround.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46144 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-17 23:04:07 +00:00
Chris Lattner
ddf89566a9 This commit changes:
1. Legalize now always promotes truncstore of i1 to i8. 
2. Remove patterns and gunk related to truncstore i1 from targets.
3. Rename the StoreXAction stuff to TruncStoreAction in TLI.
4. Make the TLI TruncStoreAction table a 2d table to handle from/to conversions.
5. Mark a wide variety of invalid truncstores as such in various targets, e.g.
   X86 currently doesn't support truncstore of any of its integer types.
6. Add legalize support for truncstores with invalid value input types.
7. Add a dag combine transform to turn store(truncate) into truncstore when
   safe.

The later allows us to compile CodeGen/X86/storetrunc-fp.ll to:

_foo:
	fldt	20(%esp)
	fldt	4(%esp)
	faddp	%st(1)
	movl	36(%esp), %eax
	fstps	(%eax)
	ret

instead of:

_foo:
	subl	$4, %esp
	fldt	24(%esp)
	fldt	8(%esp)
	faddp	%st(1)
	fstps	(%esp)
	movl	40(%esp), %eax
	movss	(%esp), %xmm0
	movss	%xmm0, (%eax)
	addl	$4, %esp
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46140 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-17 19:59:44 +00:00
Chris Lattner
0bd4893a07 * Introduce a new SelectionDAG::getIntPtrConstant method
and switch various codegen pieces and the X86 backend over
  to using it.

* Add some comments to SelectionDAGNodes.h

* Introduce a second argument to FP_ROUND, which indicates
  whether the FP_ROUND changes the value of its input. If
  not it is safe to xform things like fp_extend(fp_round(x)) -> x.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46125 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-17 07:00:52 +00:00
Duncan Sands
339e14fbdc Trampoline support for x86-64. This looks like
it should work, but I have no machine to test
it on.  Committed because it will at least
cause no harm, and maybe someone can test it
for me!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46098 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16 22:55:25 +00:00
Chris Lattner
78631168d1 make it more clear that this predicate only applies to scalar FP types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46058 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16 06:24:21 +00:00
Chris Lattner
1956d15676 introduce a isTypeInSSEReg predicate, which allows us to simplify
some code.  No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46055 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16 06:19:45 +00:00
Chris Lattner
7ff79c2d9d My previous commit had an incomplete message, it should have been:
make the 'fp return in ST(0)' optimization smart enough to
look through token factor nodes.  THis allows us to compile 
testcases like CodeGen/X86/fp-stack-retcopy.ll into:

_carg:
	subl	$12, %esp
	call	L_foo$stub
	fstpl	(%esp)
	fldl	(%esp)
	addl	$12, %esp
	ret

instead of:

_carg:
	subl	$28, %esp
	call	L_foo$stub
	fstpl	16(%esp)
	movsd	16(%esp), %xmm0
	movsd	%xmm0, 8(%esp)
	fldl	8(%esp)
	addl	$28, %esp
	ret

Still not optimal, but much better and this is a trivial patch.  Fixing 
the rest requires invasive surgery that is is not llvm 2.2 material.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46054 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16 05:56:59 +00:00
Chris Lattner
142fb3fee8 make the 'fp return in ST(0)' optimization smart enough to
look through token factor


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46053 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16 05:53:06 +00:00
Chris Lattner
b4a6eaa75b various whitespace cleanups, no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46052 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16 05:52:18 +00:00
Dale Johannesen
4af3494452 Fix and enable EH for x86-64 Darwin. Adds
ShortenEHDataFor64Bits as a not-very-accurate
abstraction to cover all the changes in DwarfWriter.
Some cosmetic changes to Darwin assembly code for
gcc testsuite compatibility.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46029 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 23:24:56 +00:00
Chris Lattner
48be23cd65 rename SDTRet -> SDTNone.
Move definition of 'trap' sdnode up from x86 instrinfo to targetselectiondag.td.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46017 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 22:02:54 +00:00
Chris Lattner
da68d30d24 no need to expand ISD::TRAP to X86ISD::TRAP, just match ISD::TRAP.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46015 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 21:58:22 +00:00
Anton Korobeynikov
6bf3ba67a5 Fix JIT encoding of trap/ud2 instruction
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46012 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 21:40:02 +00:00
Anton Korobeynikov
66fac79b89 For PR1839: add initial support for __builtin_trap. llvm-gcc part is missed
as well as PPC codegen


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46001 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 07:02:33 +00:00
Evan Cheng
6bfa8a121d Rename CCIfStruct to CCIfByVal and CCStructAssign to CCPassByVal. Remove unused parameters of CCStructAssign and add size and alignment requirement info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45997 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 03:34:58 +00:00
Evan Cheng
bdfd5ef823 Both x86-32 and x86-64 handle byval parameter attributes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45996 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 03:15:41 +00:00
Chris Lattner
3cc838433a Improve the FP stackifier to decide all on its own whether
an instruction kills a register or not.  This is cheap and 
easy to do now that instructions record this on their flags,
and this eliminates the second pass of LiveVariables from the
x86 backend.  This speeds up a release llc by ~2.5%.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45955 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14 06:41:29 +00:00
Duncan Sands
9e9cf0ce31 Whitespace tweak.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45940 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13 21:20:29 +00:00
Evan Cheng
8e5712b8bb Code clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45898 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12 01:08:07 +00:00
Chris Lattner
144ad580fd fix a wordo that gordon noticed :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45896 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12 00:53:16 +00:00
Chris Lattner
828bb6c978 Any x86 instruction that reads from an invariant location is invariant.
This allows us to sink things like:
	cvtsi2sd	32(%esp), %xmm1
when reading from the argument area, for example.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45895 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12 00:35:08 +00:00
Chris Lattner
5080f4d991 rename MachineInstr::setInstrDescriptor -> setDesc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45871 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 18:10:50 +00:00
Chris Lattner
f9b3f37abc remove xchg and shift-reg-by-1 instructions, which are dead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45870 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 18:00:50 +00:00
Chris Lattner
047ad94fc0 add a note, remove a done deed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45869 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 18:00:13 +00:00
Arnold Schwaighofer
a51cf0f074 hrm - correct spelling.
Actually were not riding any arguments. Sadly there is no semantic spell checker that is going to safe you from such a mistake.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45868 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 17:10:15 +00:00
Arnold Schwaighofer
c8ab8cde43 Improve tail call optimized call's argument lowering. Before this
commit all arguments where moved to the stack slot where they would
reside on a normal function call before the lowering to the tail call
stack slot. This was done to prevent arguments overwriting each other.
Now only arguments sourcing from a FORMAL_ARGUMENTS node or a
CopyFromReg node with virtual register (could also be a caller's
argument) are lowered indirectly.

 --This line, and those below, will be ignored--

M    X86/X86ISelLowering.cpp
M    X86/README.txt


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45867 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 16:49:42 +00:00
Arnold Schwaighofer
719eb02255 Correct a copy and paste error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45865 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 14:34:56 +00:00
Evan Cheng
90e9d4e013 Rename Int_CVTSI642SSr* to Int_CVTSI2SS64r* for naming consistency and remove unused instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45861 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 07:37:44 +00:00
Chris Lattner
a731c9fac9 more flags set right
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45860 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 07:18:17 +00:00
Chris Lattner
f77e037309 add some missing flags.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45859 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 06:59:07 +00:00
Dale Johannesen
c7406ae773 Weak things initialized to 0 don't go in bss on Darwin.
Cosmetic changes to spacing to match gcc (some dejagnu
tests actually care).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45848 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 00:54:37 +00:00
Chris Lattner
a22edc82ca Simplify the side effect stuff a bit more and make licm/sinking
both work right according to the new flags.

This removes the TII::isReallySideEffectFree predicate, and adds
TII::isInvariantLoad. 

It removes NeverHasSideEffects+MayHaveSideEffects and adds
UnmodeledSideEffects as machine instr flags.  Now the clients
can decide everything they need.

I think isRematerializable can be implemented in terms of the
flags we have now, though I will let others tackle that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45843 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 23:08:24 +00:00
Chris Lattner
b38bec222c IMPLICIT_USE and IMPLICIT_DEF are dead, remove them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45838 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 19:27:54 +00:00
Chris Lattner
ba7e756c22 Start inferring side effect information more aggressively, and fix many bugs in the
x86 backend where instructions were not marked maystore/mayload, and perf issues where
instructions were not marked neverHasSideEffects.  It would be really nice if we could
write patterns for copy instructions.

I have audited all the x86 instructions down to MOVDQAmr.  The flags on others and on
other targets are probably not right in all cases, but no clients currently use this
info that are enabled by default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45829 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 07:59:24 +00:00
Chris Lattner
36fe6d2f80 rename X86InstrX86-64.td -> X86Instr64bit.td
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45826 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 05:50:42 +00:00
Chris Lattner
dd41527a7d remove explicit sets of 'neverHasSideEffects' that can now be
inferred from the instr patterns.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45824 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 05:45:39 +00:00
Chris Lattner
9b37aaf04c get def use info more correct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45821 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 05:12:37 +00:00
Chris Lattner
8794390406 verify that the frame index is immutable before remat'ing (still disabled)
or being side-effect free.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45816 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 04:16:31 +00:00
Evan Cheng
e70bb59840 Mark byval parameter stack objects mutable for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45813 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 02:24:25 +00:00
Dale Johannesen
038129dd58 Emit unused EH frames for weak definitions on Darwin,
because assembler/linker can't cope with weak absolutes.
PR 1880.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45811 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 02:03:30 +00:00
Evan Cheng
27a446afaf 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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45798 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 00:37:26 +00:00
Evan Cheng
dffbd837b8 Remove comments that do not correspond to anything after recent refactoring.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45792 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 00:09:10 +00:00
Chris Lattner
269f0595d6 add a testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45768 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-09 00:37:18 +00:00
Duncan Sands
e51775dc5e Use size_t to store Pos, avoid truncating value
on 64-bit builds.  Analysis and original patch
by Török Edwin.  Code audit found another place
with the same problem, also fixed here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45746 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-08 10:06:15 +00:00
Evan Cheng
b353459d68 Minor fix to enable x86-64 pic jit (still fails for other reasons).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45734 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-08 02:07:10 +00:00
Evan Cheng
b1a9aec515 Fix a x86-64 static codegen bug. This fixes a lot of x86-64 jit failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45733 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-08 02:06:11 +00:00
Bill Wendling
750ec00436 Silence warning about loss of precision.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45731 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-08 00:52:29 +00:00
Evan Cheng
9b44944d3d Unbreak x86-64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45725 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 23:08:23 +00:00
Chris Lattner
84a7c41251 add a note that is important for some fp apps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45723 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 21:59:58 +00:00
Duncan Sands
30d15751c8 Unbreak x86-32 darwin long double!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45703 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 16:36:38 +00:00
Duncan Sands
004a81dcc7 Fix long double support on x86-32 linux.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45701 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 13:44:22 +00:00
Bill Wendling
323cd29009 Operand 1 should be a register. We don't care if it's a preg, vreg, or 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45699 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 08:05:29 +00:00
Chris Lattner
749c6f6b5e rename TargetInstrDescriptor -> TargetInstrDesc.
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45695 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 07:27:27 +00:00
Chris Lattner
8f707e15fb rename hasVariableOperands() -> isVariadic(). Add some comments.
Evan, please review the comments I added to getNumDefs to make sure
that they are accurate, thx.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45687 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 05:19:29 +00:00
Chris Lattner
349c495200 Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45680 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 03:13:06 +00:00
Chris Lattner
cc8cd0cbf1 remove MachineOpCode typedef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45679 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 02:48:55 +00:00
Chris Lattner
8ca5c67c6e Add predicates methods to TargetOperandInfo, and switch all clients
over to using them, instead of diddling Flags directly.  Change the
various flags from const variables to enums.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45677 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 02:39:19 +00:00
Chris Lattner
69244300b8 Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects
that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45674 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:56:04 +00:00
Owen Anderson
43dbe05279 Move even more functionality from MRegisterInfo into TargetInstrInfo.
Some day I'll get it all moved over...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45672 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:35:02 +00:00
Chris Lattner
7e40ad5106 The pic base can't be duplicated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45668 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 23:49:32 +00:00
Chris Lattner
834f1ce031 rename isLoad -> isSimpleLoad due to evan's desire to have such a predicate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45667 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 23:38:27 +00:00
Bill Wendling
f995830daf Fix comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45638 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 23:30:51 +00:00
Nate Begeman
219f67f0a5 Remove an incorrect optimization that is performed correctly by
the target independent legalizer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45631 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 20:51:30 +00:00
Gordon Henriksen
86737665b8 Refactoring the x86 and x86-64 calling convention implementations,
unifying the copied algorithms and saving over 500 LOC. There should
be no functionality change, but please test on your favorite x86
target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45627 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 16:56:59 +00:00
Bill Wendling
df303bd7f2 Chris and Evan noticed that this check was compleatly fubared. I was
checking that there was a from a global instead of a load from the stub
for a global, which is the one that's safe to hoist.

Consider this program:

volatile char G[100];
int B(char *F, int N) {
  for (; N > 0; --N)
    F[N] = G[N];
}

In static mode, we shouldn't be hoisting the load from G:

$ llc -relocation-model=static -o - a.bc -march=x86 -machine-licm

LBB1_1: # bb.preheader
        leal    -1(%eax), %edx
        testl   %edx, %edx
        movl    $1, %edx
        cmovns  %eax, %edx
        xorl    %esi, %esi
LBB1_2: # bb
        movb    _G(%eax), %bl
        movb    %bl, (%ecx,%eax)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45626 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 09:18:04 +00:00
Chris Lattner
f29495a22f enable sinking and licm of loads from the argument area. I'd like to enable this
for remat, but can't due to an RA bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45623 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 06:10:42 +00:00
Chris Lattner
3b5a221f81 simplify some code by using shorter accessors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45622 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 05:28:30 +00:00
Chris Lattner
a83b34bbeb revert my previous patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45621 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 05:26:26 +00:00
Chris Lattner
505d4abd05 factor some code better to avoid redundancy between
isReallySideEffectFree and isReallyTriviallyReMaterializable.  Why is a load from
a global considered side-effect-free but not rematable?


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45620 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 05:19:56 +00:00
Chris Lattner
e9648f8981 getting the pic base has no side effects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45618 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 03:54:32 +00:00
Evan Cheng
2a3e08b596 X86 JIT PIC jumptable support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45616 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 02:26:58 +00:00
Evan Cheng
0475ab58b8 Combine MovePCtoStack + POP32r into one instruction MOVPC32r so it can be moved if needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45605 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 00:41:47 +00:00
Owen Anderson
d94b6a16fe Move some more functionality from MRegisterInfo to TargetInstrInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45603 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 23:57:37 +00:00
Evan Cheng
991500e329 Unbreak tailcall opt in JIT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45576 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 10:50:28 +00:00
Evan Cheng
be8c03fc66 X86 PIC JIT support fixes: encoding bugs, add lazy pointer stubs support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45575 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 10:46:51 +00:00
Gordon Henriksen
ae636f8e99 First steps in in X86 calling convention cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45536 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-03 16:47:34 +00:00
Evan Cheng
02aabbf96b Change MachineRelocation::DoesntNeedFnStub to NeedStub. This fields will be used
for non-function GV relocations that require function address stubs (e.g. Mac OS X in non-static mode).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45527 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-03 02:56:28 +00:00
Evan Cheng
306cbdbee7 X86 PIC JIT bug fix: relocations for constantpool and jumptable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45515 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-02 23:38:59 +00:00
Bill Wendling
3100afaf3f Machine LICM will check that operands are defined outside of the loop. Also
check that register isn't 0 before going further.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45498 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-02 21:10:40 +00:00
Chris Lattner
7ad92d81e2 darwin9 and above support aligned common symbols.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45494 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-02 19:44:55 +00:00
Owen Anderson
f6372aa1cc Move some more instruction creation methods from RegisterInfo into InstrInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45484 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 21:11:32 +00:00
Chris Lattner
264e6fec9f Fix a bug in my previous patch: refer to the impl not the pure virtual version. It's unclear why gcc would ever compile this...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45476 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 01:05:34 +00:00
Chris Lattner
6410552250 Fix a problem where lib/Target/TargetInstrInfo.h would include and use
a header file from libcodegen.  This violates a layering order: codegen
depends on target, not the other way around.  The fix to this is to 
split TII into two classes, TII and TargetInstrInfoImpl, which defines
stuff that depends on libcodegen.  It is defined in libcodegen, where 
the base is not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45475 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 01:03:04 +00:00
Owen Anderson
d10fd9791c Move copyRegToReg from MRegisterInfo to TargetInstrInfo. This is part of the
Machine-level API cleanup instigated by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45470 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31 06:32:00 +00:00
Chris Lattner
84bc5427d6 Rename SSARegMap -> MachineRegisterInfo in keeping with the idea
that "machine" classes are used to represent the current state of
the code being compiled.  Given this expanded name, we can start 
moving other stuff into it.  For now, move the UsedPhysRegs and
LiveIn/LoveOuts vectors from MachineFunction into it.

Update all the clients to match.

This also reduces some needless #includes, such as MachineModuleInfo
from MachineFunction.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45467 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31 04:13:23 +00:00
Chris Lattner
8aa797aa51 Add new shorter predicates for testing machine operands for various types:
e.g. MO.isMBB() instead of MO.isMachineBasicBlock().  I don't plan on 
switching everything over, so new clients should just start using the 
shorter names.

Remove old long accessors, switching everything over to use the short
accessor: getMachineBasicBlock() -> getMBB(), 
getConstantPoolIndex() -> getIndex(), setMachineBasicBlock -> setMBB(), etc.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45464 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 23:10:15 +00:00
Chris Lattner
f73823000e More cleanups for MachineOperand:
- Eliminate the static "print" method for operands, moving it
    into MachineOperand::print.
  - Change various set* methods for register flags to take a bool
    for the value to set it to.  Remove unset* methods.
  - Group methods more logically by operand flavor in MachineOperand.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45461 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 21:56:09 +00:00
Chris Lattner
9a1ceaedc2 Use MachineOperand::getImm instead of MachineOperand::getImmedValue. Likewise setImmedValue -> setImm
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45453 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 20:49:49 +00:00
Bill Wendling
6259d51c91 If we have a load of a global address that's not modified during the
function, then go ahead and hoist it out of the loop. This is the result:

$ cat a.c
volatile int G;

int A(int N) {
  for (; N > 0; --N)
    G++;
}
$ llc -o - -relocation-model=pic
_A:
...
LBB1_2: # bb
        movl    L_G$non_lazy_ptr-"L1$pb"(%eax), %esi
        incl    (%esi)
        incl    %edx
        cmpl    %ecx, %edx
        jne     LBB1_2  # bb
...
$ llc -o - -relocation-model=pic -machine-licm
_A:
...
        movl    L_G$non_lazy_ptr-"L1$pb"(%eax), %eax
LBB1_2: # bb
        incl    (%eax)
        incl    %edx
        cmpl    %ecx, %edx
        jne     LBB1_2  # bb
...

I'm limiting this to the MOV32rm x86 instruction for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45444 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 03:18:58 +00:00
Chris Lattner
39697a83b5 Shrinkify the machine operand creation method names.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45433 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 00:45:46 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 20:36:04 +00:00
Chris Lattner
fc643c5e88 remove attribution from lib Makefiles.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45415 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 20:09:26 +00:00
Chris Lattner
03c079d5fc One readme entry is done, one is really easy (Evan, want to investigate
eliminating the llvm.x86.sse2.loadl.pd intrinsic?), one shuffle optzn
may be done (if shufps is better than pinsw, Evan, please review), and
we already know about LICM of simple instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45407 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 19:31:47 +00:00
Chris Lattner
63079f0757 Fold comparisons against a constant nan, and optimize ORD/UNORD
comparisons with a constant.  This allows us to compile isnan to:

_foo:
	fcmpu cr7, f1, f1
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 

instead of:

LCPI1_0:					;  float
	.space	4
_foo:
	lis r2, ha16(LCPI1_0)
	lfs f0, lo16(LCPI1_0)(r2)
	fcmpu cr7, f1, f0
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45405 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 08:37:08 +00:00
Chris Lattner
69bfbdfaee this xform is implemented.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45404 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 08:19:39 +00:00
Chris Lattner
d60eedca01 Codegen:
as:

_bar:
	pushl	%esi
	subl	$8, %esp
	movl	16(%esp), %esi
	call	L_foo$stub
	fstps	(%esi)
	addl	$8, %esp
	popl	%esi
	#FP_REG_KILL
	ret

instead of:

_bar:
	pushl	%esi
	subl	$8, %esp
	movl	16(%esp), %esi
	call	L_foo$stub
	fstpl	(%esi)
	cvtsd2ss	(%esi), %xmm0
	movss	%xmm0, (%esi)
	addl	$8, %esp
	popl	%esi
	#FP_REG_KILL
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45401 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 06:57:38 +00:00
Chris Lattner
112dedc520 avoid going through a stack slot to convert from fpstack to xmm reg
if we are just going to store it back anyway.  This improves things 
like:
double foo();
void bar(double *P) { *P = foo(); }



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45399 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 06:41:28 +00:00
Chris Lattner
7ede51b964 add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45397 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 05:51:58 +00:00
Chris Lattner
9bfcc624ba add a note.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45387 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-28 21:50:40 +00:00
Chris Lattner
44cb8efdc1 add a simple hack
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45343 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-24 19:27:46 +00:00
Anton Korobeynikov
d07310af64 Erm, really disable :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45319 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 20:46:24 +00:00
Anton Korobeynikov
144a45eb94 Disable, until we'll really need it
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45318 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 20:41:12 +00:00
Evan Cheng
aabe38bf0c Preliminary PIC JIT support for X86 (32-bit) / Darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45313 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 09:40:20 +00:00
Evan Cheng
a9ab846669 Oops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45312 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 09:14:34 +00:00
Evan Cheng
f02ca69951 Fix JIT code emission of X86::MovePCtoStack.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45307 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 02:26:46 +00:00
Evan Cheng
889ac61113 Allow JIT with non-static relocation model.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45304 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 01:12:14 +00:00
Evan Cheng
0b0102b172 New entry.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45280 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-21 01:31:58 +00:00
Evan Cheng
700a0fba97 Fix JIT encoding for CMPSD as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45268 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-20 19:57:09 +00:00
Chris Lattner
4185b52183 add an obvious load folding missed optzn.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45161 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-18 16:48:14 +00:00
Bill Wendling
627c00b663 Add "mayHaveSideEffects" and "neverHasSideEffects" flags to some instructions. I
based what flag to set on whether it was already marked as
"isRematerializable". If there was a further check to determine if it's "really"
rematerializable, then I marked it as "mayHaveSideEffects" and created a check
in the X86 back-end similar to the remat one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45132 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-17 23:07:56 +00:00
Bill Wendling
691de38295 LD_Fp64m should have "isRematerializable" set.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45128 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-17 22:17:14 +00:00
Chris Lattner
48b0133b83 fix a questionable cast, thanks to Mike Stump for pointing this out.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45075 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-16 20:26:54 +00:00
Chris Lattner
d7610e16fc Fix the JIT encoding of cmp*ss, which aborts with this assertion currently:
X86CodeEmitter.cpp:378: failed assertion `0 && "Immediate size not set!"'

I *think* this is right, but Evan, please verify.  It also looks like
CMPSDrr and maybe others are missing this info.  Evan, plz investigate.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45074 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-16 20:12:41 +00:00
Evan Cheng
7a831ce85f Make better use of instructions that clear high bits; fix various 2-wide shuffle bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45058 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-15 03:00:47 +00:00
Evan Cheng
0c5a507fcb Actually, MOVPQIto64mr is a dup of MOVPQI2QImr, MOV64toPQIrm is a dup of MOVQI2PQIrm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45041 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 20:08:14 +00:00
Evan Cheng
2023ed720e Fix (mem) <-> low 64-bits of xmm bugs pointed out by David Greene. Mac OS X Leopard assembler recognizes movq.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45040 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 19:54:07 +00:00
Dale Johannesen
6e959b9afe x86-32 long doubles are 4-byte aligned on the stack
for parameter passing (only for that, on Darwin).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45038 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 19:25:34 +00:00
Evan Cheng
fd9e473a82 Fix bsf / bsr jit encoding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45037 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 18:49:43 +00:00
Evan Cheng
8ec861183b Oops. Forgot these.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45036 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 18:25:34 +00:00
Dan Gohman
1a8001e665 Fix Intel asm syntax for the bsr and bsf instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45030 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 15:10:00 +00:00
Evan Cheng
152804e9c1 Fix ctlz and cttz. llvm definition requires them to return number of bits in of the src type when value is zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45029 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 08:30:15 +00:00
Evan Cheng
18efe269b1 Implement ctlz and cttz with bsr and bsf.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45024 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 02:13:44 +00:00
Evan Cheng
1314b00cf2 Fold some and + shift in x86 addressing mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44970 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-13 00:43:27 +00:00
Evan Cheng
6e141fd048 Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always re-materializable and they should not be spilled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44960 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 23:12:09 +00:00
Dan Gohman
890813243f Allow vector integer constants to be created with
SelectionDAG::getConstant, in the same way as vector floating-point
constants. This allows the legalize expansion code for @llvm.ctpop and
friends to be usable with vector types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44954 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 22:21:26 +00:00
Evan Cheng
794405e6aa Use shuffles to implement insert_vector_elt for i32, i64, f32, and f64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44929 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 07:55:34 +00:00
Evan Cheng
db2d524d5f Lower a build_vector with all constants into a constpool load unless it can be done with a move to low part.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44921 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 06:45:40 +00:00
Scott Michel
a28c6bfef3 Correct typo for Linux: s/esp/%rsp/
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44904 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 02:38:28 +00:00
Nate Begeman
6e041c2015 Allow the JIT to encode MMX instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44869 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 18:06:14 +00:00
Evan Cheng
14b32e1941 - Improved v8i16 shuffle lowering. It now uses pshuflw and pshufhw as much as
possible before resorting to pextrw and pinsrw.
- Better codegen for v4i32 shuffles masquerading as v8i16 or v16i8 shuffles.
- Improves (i16 extract_vector_element 0) codegen by recognizing
  (i32 extract_vector_element 0) does not require a pextrw.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44836 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 01:46:18 +00:00
Nate Begeman
844e0f9def x86 doesn't actually want to custom lower v3i32
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44835 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 01:41:33 +00:00
Anton Korobeynikov
7eb587779e Hey, English is not my native language :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44820 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 23:10:20 +00:00
Anton Korobeynikov
2fb9deef10 Clarify the need of CFI() stuff
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44819 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 23:08:35 +00:00
Anton Korobeynikov
5f68287605 Provide convenient way to disable CFI stuff for old/broken assemblers.
Use it for Darwin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44818 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 23:04:38 +00:00
Chris Lattner
ec90cd1bf8 Disable cfi directives for now, darwin does't support them.
These should probably be something like:

  CFI(".cfi_def_cfa_offset 16\n")

where CFI is defined to a noop on darwin and other platforms
that don't support those directives.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44803 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 19:10:18 +00:00
Anton Korobeynikov
3a7bcc4d1b And finally annotate X86-64 version of callback.
All bad stuff from SSE version is implicitely inherited :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44794 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 15:27:07 +00:00
Anton Korobeynikov
df7814ce92 Provide annotation for SSE version of callback. It's even more
broken, because doesn't mark xmm regs properly


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44793 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 15:13:55 +00:00
Anton Korobeynikov
a14b6696c0 Annotate JIT callback function with call frame infromation.
This will allow us (theoretically) to unwind through JITer.
The code wasn't verified, so I'm pretty sure offsets are wrong :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44792 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 14:54:42 +00:00
Bill Wendling
041b3f8356 Reverting 44702. It wasn't correct to rename them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44727 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 23:58:46 +00:00
Chris Lattner
5aaddaa7b8 aesthetic changes, no functionality change. Evan, it's not clear
what 'Available' is, please add a comment near it and rename it
if appropriate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44703 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 07:22:58 +00:00
Bill Wendling
320c630c1b Renaming:
isTriviallyReMaterializable -> hasNoSideEffects
  isReallyTriviallyReMaterializable -> isTriviallyReMaterializable


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44702 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 07:17:56 +00:00
Evan Cheng
779ccea5b6 Add comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44686 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-07 21:30:01 +00:00
Evan Cheng
8a86c3f3ae Much improved v8i16 shuffles. (Step 1).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44676 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-07 08:07:39 +00:00
Evan Cheng
1076210ee3 Remove a bogus optimization. It's not possible to do a move to low element to a <8 x i16> or <16 x i8> vector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44669 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 22:14:22 +00:00
Chris Lattner
7d13015e32 add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44637 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 22:58:19 +00:00
Evan Cheng
d64b5c82b9 Add a argument to storeRegToStackSlot and storeRegToAddr to specify whether
the stored register is killed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44600 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 03:14:33 +00:00
Evan Cheng
aee4af68ae Remove redundant foldMemoryOperand variants and other code clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44517 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-02 08:30:39 +00:00
Evan Cheng
e62f97c094 Allow some reloads to be folded in multi-use cases. Specifically testl r, r -> cmpl [mem], 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44479 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-01 02:07:52 +00:00
Nate Begeman
d73ab8884f Support returning non-power-of-2 vectors to unblock some work
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44371 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 19:28:48 +00:00
Duncan Sands
dc024674ff Fix PR1146: parameter attributes are longer part of
the function type, instead they belong to functions
and function calls.  This is an updated and slightly
corrected version of Reid Spencer's original patch.
The only known problem is that auto-upgrading of
bitcode files doesn't seem to work properly (see
test/Bitcode/AutoUpgradeIntrinsics.ll).  Hopefully
a bitcode guru (who might that be? :) ) will fix it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44359 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 13:23:08 +00:00
Chris Lattner
8a594489bf Fix a long standing deficiency in the X86 backend: we would
sometimes emit "zero" and "all one" vectors multiple times,
for example:

_test2:
	pcmpeqd	%mm0, %mm0
	movq	%mm0, _M1
	pcmpeqd	%mm0, %mm0
	movq	%mm0, _M2
	ret

instead of:

_test2:
	pcmpeqd	%mm0, %mm0
	movq	%mm0, _M1
	movq	%mm0, _M2
	ret

This patch fixes this by always arranging for zero/one vectors
to be defined as v4i32 or v2i32 (SSE/MMX) instead of letting them be
any random type.  This ensures they get trivially CSE'd on the dag.
This fix is also important for LegalizeDAGTypes, as it gets unhappy
when the x86 backend wants BUILD_VECTOR(i64 0) to be legal even when
'i64' isn't legal.

This patch makes the following changes:

1) X86TargetLowering::LowerBUILD_VECTOR now lowers 0/1 vectors into
   their canonical types.
2) The now-dead patterns are removed from the SSE/MMX .td files.
3) All the patterns in the .td file that referred to immAllOnesV or
   immAllZerosV in the wrong form now use *_bc to match them with a
   bitcast wrapped around them.
4) X86DAGToDAGISel::SelectScalarSSELoad is generalized to handle 
   bitcast'd zero vectors, which simplifies the code actually.
5) getShuffleVectorZeroOrUndef is updated to generate a shuffle that
   is legal, instead of generating one that is illegal and expecting
   a later legalize pass to clean it up.
6) isZeroShuffle is generalized to handle bitcast of zeros.
7) several other minor tweaks.

This patch is definite goodness, but has the potential to cause random
code quality regressions.  Please be on the lookout for these and let 
me know if they happen.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44310 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25 00:24:49 +00:00
Chris Lattner
0a32092103 remove bogus assertion that broke CodeGen/Generic/cast-fp.ll on x86
among others.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44302 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 18:37:20 +00:00
Chris Lattner
27a6c7380f Several changes:
1) Change the interface to TargetLowering::ExpandOperationResult to 
   take and return entire NODES that need a result expanded, not just
   the value.  This allows us to handle things like READCYCLECOUNTER,
   which returns two values.
2) Implement (extremely limited) support in LegalizeDAG::ExpandOp for MERGE_VALUES.
3) Reimplement custom lowering in LegalizeDAGTypes in terms of the new
   ExpandOperationResult.  This makes the result simpler and fully 
   general.
4) Implement (fully general) expand support for MERGE_VALUES in LegalizeDAGTypes.
5) Implement ExpandOperationResult support for ARM f64->i64 bitconvert and ARM
   i64 shifts, allowing them to work with LegalizeDAGTypes.
6) Implement ExpandOperationResult support for X86 READCYCLECOUNTER and FP_TO_SINT,
   allowing them to work with LegalizeDAGTypes.

LegalizeDAGTypes now passes several more X86 codegen tests when enabled and when
type legalization in LegalizeDAG is ifdef'd out.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44300 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 07:07:01 +00:00
Chris Lattner
94613166b7 add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44299 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 06:13:33 +00:00
Dale Johannesen
1d4ce2ab96 Fix .eh table linkage issues on Darwin. Some EH support
for Darwin PPC, but it's not fully working yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44258 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-20 23:24:42 +00:00
Nate Begeman
b348d18caf Add support for vectors to int <-> float casts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44204 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-17 03:58:34 +00:00
Anton Korobeynikov
45b22fa9f1 Implement codegen for flt_rounds on x86
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44183 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-16 01:31:51 +00:00
Evan Cheng
e40740bd8c Oops. Debugging code shouldn't have been checked in.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44128 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-14 19:08:32 +00:00
Anton Korobeynikov
9de1934099 Fix PIC jump table codegen on x86-32/linux. In fact, such thing should be applied
to all targets uses GOT-relative offsets for PIC (Alpha?)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44108 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-14 09:18:41 +00:00
Duncan Sands
87b665d3de Eliminate the recently introduced CCAssignToStackABISizeAlign
in favour of teaching CCAssignToStack that size 0 and/or align
0 means to use the ABI values.  This seems a neater solution.
It is safe since no legal value type has size 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44107 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-14 08:29:13 +00:00
Evan Cheng
c498b0281f Clean up sub-register implementation by moving subReg information back to
MachineOperand auxInfo. Previous clunky implementation uses an external map
to track sub-register uses. That works because register allocator uses
a new virtual register for each spilled use. With interval splitting (coming
soon), we may have multiple uses of the same register some of which are
of using different sub-registers from others. It's too fragile to constantly
update the information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44104 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-14 07:59:08 +00:00
Dale Johannesen
b1d40d9dd7 Revert previous; these files aren't ready to go in yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44057 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 19:16:02 +00:00
Dale Johannesen
b97aec663b Add parameter to getDwarfRegNum to permit targets
to use different mappings for EH and debug info;
no functional change yet.
Fix warning in X86CodeEmitter.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44056 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 19:13:01 +00:00
Evan Cheng
e7c8754a52 Fix x86-64 jit: remove reliance on Dwarf numbers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44048 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 17:54:34 +00:00
Bill Wendling
c69107ca11 Unifacalize the CALLSEQ{START,END} stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44045 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 09:19:02 +00:00
Bill Wendling
0f8d9c04d9 Unify CALLSEQ_{START,END}. They take 4 parameters: the chain, two stack
adjustment fields, and an optional flag. If there is a "dynamic_stackalloc" in
the code, make sure that it's bracketed by CALLSEQ_START and CALLSEQ_END. If
not, then there is the potential for the stack to be changed while the stack's
being used by another instruction (like a call).

This can only result in tears...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44037 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 00:44:25 +00:00
Owen Anderson
20ab29068d Add a flag for indirect branch instructions.
Target maintainers: please check that the instructions for your target are correctly marked.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44012 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-12 07:39:39 +00:00
Anton Korobeynikov
f191c80cd7 Use TableGen to emit information for dwarf register numbers.
This makes DwarfRegNum to accept list of numbers instead.
Added three different "flavours", but only slightly tested on x86-32/linux.
Please check another subtargets if possible,


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43997 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-11 19:50:10 +00:00
Dale Johannesen
e3ef744d3e Add CCAssignToStackABISizeAlign for convenience in
dealing with types whose size & alignment are
different on different subtargets.  Use it for x86 f80.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43988 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-10 22:07:15 +00:00
Arnold Schwaighofer
38ada868f2 Update tailcall code to include inline attribute operand for memcpy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43978 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-10 10:48:01 +00:00
Evan Cheng
ed2fc71610 Unbreak x86-64 jumptable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43955 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 19:11:23 +00:00
Dale Johannesen
7a42f24f0c Revert previous rewrite per chris's comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43950 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 18:07:11 +00:00
Evan Cheng
cc41586b9d Much improved pic jumptable codegen:
Then:
        call    "L1$pb"
"L1$pb":
        popl    %eax
		...
LBB1_1: # entry
        imull   $4, %ecx, %ecx
        leal    LJTI1_0-"L1$pb"(%eax), %edx
        addl    LJTI1_0-"L1$pb"(%ecx,%eax), %edx
        jmpl    *%edx

        .align  2
        .set L1_0_set_3,LBB1_3-LJTI1_0
        .set L1_0_set_2,LBB1_2-LJTI1_0
        .set L1_0_set_5,LBB1_5-LJTI1_0
        .set L1_0_set_4,LBB1_4-LJTI1_0
LJTI1_0:
        .long    L1_0_set_3
        .long    L1_0_set_2

Now:
        call    "L1$pb"
"L1$pb":
        popl    %eax
		...
LBB1_1: # entry
        addl    LJTI1_0-"L1$pb"(%eax,%ecx,4), %eax
        jmpl    *%eax

		.align  2
		.set L1_0_set_3,LBB1_3-"L1$pb"
		.set L1_0_set_2,LBB1_2-"L1$pb"
		.set L1_0_set_5,LBB1_5-"L1$pb"
		.set L1_0_set_4,LBB1_4-"L1$pb"
LJTI1_0:
        .long    L1_0_set_3
        .long    L1_0_set_2


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43924 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 01:32:10 +00:00
Dale Johannesen
3556bc1a9d Rewrite Dwarf number handling per review comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43918 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 00:47:10 +00:00
Dale Johannesen
4542edcaa7 Complete conditionalization of Dwarf reg numbers.
Would somebody not on Darwin please make sure this
doesn't break anything.  Exception handling failures
would be the most likely symptom.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43844 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-07 21:48:35 +00:00
Dale Johannesen
483ec21d90 Interchange Dwarf numbers of ESP and EBP on x86 Darwin.
Much improvement in exception handling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43794 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-07 00:25:05 +00:00
Rafael Espindola
f1ba1cad38 Move the LowerMEMCPY and LowerMEMCPYCall to a common place.
Thanks for the suggestions Bill :-)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43742 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-05 23:12:20 +00:00
Evan Cheng
db807edd66 Use movups to spill / restore SSE registers on targets where stacks alignment is
less than 16. This is a temporary solution until dynamic stack alignment is
implemented.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43703 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-05 07:30:01 +00:00
Duncan Sands
ca0ed74485 Eliminate the remaining uses of getTypeSize. This
should only effect x86 when using long double.  Now
12/16 bytes are output for long double globals (the
exact amount depends on the alignment).  This brings
globals in line with the rest of LLVM: the space
reserved for an object is now always the ABI size.
One tricky point is that only 10 bytes should be
output for long double if it is a field in a packed
struct, which is the reason for the additional
argument to EmitGlobalConstant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43688 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-05 00:04:43 +00:00
Chris Lattner
fe6575c2bf Fix PR1761 by not printing (rip) suffix when in -static mode.
Evan, please review this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43680 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-04 19:23:28 +00:00
Chris Lattner
03e6c7091e Fix PR1763 by allowing the 'q' constraint to work with 64-bit
regs on x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43669 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-04 06:51:12 +00:00
Evan Cheng
a9d641e574 Unbreak tailcall opt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43646 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-02 17:45:40 +00:00
Chris Lattner
253945899b add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43642 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-02 17:04:20 +00:00
Evan Cheng
9df7dc52e8 Missing a getNumOperands check.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43630 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-02 01:26:22 +00:00
Bill Wendling
0d642871f5 Silence, accersed warning
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43609 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-01 08:51:44 +00:00
Rafael Espindola
e0703c84dd Make ARM and X86 LowerMEMCPY identical by moving the isThumb check into getMaxInlineSizeThreshold
and by restructuring the X86 version.

New I just have to move this to a common place :-)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43554 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-31 14:39:58 +00:00
Rafael Espindola
fc05f402ea Make ARM an X86 memcpy expansion more similar to each other.
Now both subtarget define getMaxInlineSizeThreshold and the expansion uses it.

This should not change generated code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43552 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-31 11:52:06 +00:00
Dale Johannesen
25f1d08619 Make i64=expand_vector_elt(v2i64) work in 32-bit mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43535 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-31 00:32:36 +00:00
Dale Johannesen
c784208a73 Add missing SSE builtins: CVTPD2PI, CVTPS2PI,
CVTTPD2PI, CVTTPS2PI, CVTPI2PD, CVTPI2PS.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43523 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-30 22:15:38 +00:00
Duncan Sands
14db5efbf0 Fix for visibility warnings generated by gcc-4.2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43500 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-30 13:14:37 +00:00
Dale Johannesen
8d26e594f0 Add missing MMX PSUBQ.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43488 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-30 01:18:38 +00:00
Evan Cheng
3c3ddb3a85 Enable more fold (sext (load x)) -> (sext (truncate (sextload x)))
transformation. Previously, it's restricted by ensuring the number of load uses
is one. Now the restriction is loosened up by allowing setcc uses to be
"extended" (e.g. setcc x, c, eq -> setcc sext(x), sext(c), eq).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43465 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-29 19:58:20 +00:00
Evan Cheng
e127a73154 Avoid doing something dumb like rewriting using a 64-bit iv in 32-bit mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43446 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-29 07:57:50 +00:00
Chris Lattner
dc4756bfda add a note.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43444 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-29 06:19:48 +00:00
Chris Lattner
fb7f343615 Add support for the x86-64 'q' regigster modifier, and add support for the
b/h/w/k/q inline asm memory modifiers, which are just ignored.  This fixes
PR1748 and CodeGen/X86/2007-10-28-inlineasm-q-modifier.ll



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43430 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-29 03:09:07 +00:00
Evan Cheng
402b678373 New entry.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43420 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-28 04:01:09 +00:00
Anton Korobeynikov
8d9d74eaa8 Fix off-by-one stack offset computations (dwarf information) for callee-saved
registers in case, when FP pointer was eliminated. This should fixes misc. random
EH-related crahses, when stuff is compiled with -fomit-frame-pointer.
Thanks Duncan for nailing this bug!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43381 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-26 09:13:24 +00:00
Evan Cheng
2bd122c4d9 Loosen up iv reuse to allow reuse of the same stride but a larger type when truncating from the larger type to smaller type is free.
e.g.
Turns this loop:
LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
        movw    %dx, %si
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %edi
        movw    %si, (%edi)
        movl    L_Y$non_lazy_ptr, %edi
        movw    %dx, (%edi)
		addw    $4, %dx
		incw    %si
		incl    %ecx
		cmpl    %eax, %ecx
		jne     LBB1_2  # bb
	
into

LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %esi
        movw    %cx, (%esi)
        movl    L_Y$non_lazy_ptr, %esi
        movw    %dx, (%esi)
        addw    $4, %dx
		incl    %ecx
        cmpl    %eax, %ecx
        jne     LBB1_2  # bb


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43375 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-26 01:56:11 +00:00
Dan Gohman
8368805e25 Fix the folding of multiplication into addresses on x86, which was broken
by the recent {U,S}MUL_LOHI changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43230 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22 20:22:24 +00:00
Evan Cheng
42b08be973 Fix an unfolding bug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43212 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22 03:03:20 +00:00
Dale Johannesen
61c7ef34e3 Allow for copysign having f80 second argument.
Fixes 5550319.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43205 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-21 01:07:44 +00:00
Evan Cheng
f7c9695a38 Resolve unfold tables ambiguity.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43194 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19 23:50:58 +00:00
Evan Cheng
66f7163545 Local spiller optimization:
Turn a store folding instruction into a load folding instruction. e.g.
     xorl  %edi, %eax
     movl  %eax, -32(%ebp)
     movl  -36(%ebp), %eax
     orl   %eax, -32(%ebp)
=>
     xorl  %edi, %eax
     orl   -36(%ebp), %eax
     mov   %eax, -32(%ebp)
This enables the unfolding optimization for a subsequent instruction which will
also eliminate the newly introduced store instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43192 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19 21:23:22 +00:00
Rafael Espindola
5c0d6ed325 Add support for byval function whose argument is not 32 bit aligned.
To do this it is necessary to add a "always inline" argument to the
memcpy node. For completeness I have also added this node to memmove
and memset.  I have also added getMem* functions, because the extra
argument makes it cumbersome to use getNode and because I get confused
by it :-)




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43172 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19 10:41:11 +00:00
Evan Cheng
f0a0cddbcd - Added getOpcodeAfterMemoryUnfold(). It doesn't unfold an instruction, but only returns the opcode of the instruction post unfolding.
- Fix some copy+paste bugs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43153 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-18 22:40:57 +00:00
Evan Cheng
58184e6878 Use SmallVectorImpl instead of SmallVector with hardcoded size in MRegister public interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43150 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-18 21:29:24 +00:00
Christopher Lamb
91ee18c1f7 Fix a typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43144 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-18 19:28:55 +00:00
Chris Lattner
7ef1a4bf04 Change fp to sint legalization on x86-32 to do 2 x i32
loads instead of 1 x i64 loads.  This doesn't change any functionality yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43068 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-17 06:17:29 +00:00
Chris Lattner
2ff75ee9ab fix some funny indentation, add comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43066 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-17 06:02:13 +00:00
Dale Johannesen
c274f54ed8 Check for invalid cc's in f80 select.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43033 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-16 18:09:08 +00:00
Arnold Schwaighofer
448175fd02 Correction to tail call optimization code. The new return address
was stored to the acutal stack slot before the parameters were
lowered to their stack slot. This could cause arguments to be
overwritten by the return address if the called function had less
parameters than the caller function. The update should remove the
last failing test case of llc-beta: SPASS.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43027 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-16 09:05:00 +00:00
Evan Cheng
87c8935fd5 LowerFP_TO_SINT must not create a stack object if it's not needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43004 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 20:11:21 +00:00
Evan Cheng
3644601563 Unbreak x86-64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42962 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 10:09:39 +00:00
Evan Cheng
347d39f1fd Revert 42908 for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42960 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 05:57:21 +00:00
Duncan Sands
7fef59f7e5 Clarify that fastcc has a problem with nested function
trampolines, rather than with nested functions themselves.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42955 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-13 07:38:37 +00:00
Evan Cheng
106e8020bd Change unfoldMemoryOperand(). User is now responsible for passing in the
register used by the unfolded instructions. User can also specify whether to
unfold the load, the store, or both.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42946 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-13 02:35:06 +00:00
Arnold Schwaighofer
92226dd19f Correcting the corrections. Bad bad baaad emacs!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42935 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-12 21:53:12 +00:00
Arnold Schwaighofer
48abc5cf6b Corrected many typing errors. And removed 'nest' parameter handling
for fastcc from X86CallingConv.td.  This means that nested functions
are not supported for calling convention 'fastcc'.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42934 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-12 21:30:57 +00:00
Duncan Sands
2e4d675d93 Due to the new tail call optimization, trampolines can no
longer be created for fastcc functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42925 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-12 19:37:31 +00:00
Evan Cheng
1c5d83c14e Update.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42922 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-12 18:22:55 +00:00