Commit Graph

34898 Commits

Author SHA1 Message Date
Duncan Sands
67c18d5034 Document the fact that the verifier currently requires the
top bit of a ValueType to be zero.  Enforce this by ensuring
an assertion failure if someone tries to create a ValueType
without this property.  I chose this minimal approach rather
than a more official integration of the notion of reserved
bits into ValueType because I'm hoping that the verifier will
be changed to no longer require this :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43031 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-16 13:34:11 +00:00
Duncan Sands
af47b11b95 Initial infrastructure for arbitrary precision integer
codegen support.  This should have no effect on codegen
for other types.  Debatable bits: (1) the use (abuse?)
of a set in SDNode::getValueTypeList; (2) the length of
getTypeToTransformTo, which maybe should be refactored
with a non-inline part for extended value types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43030 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-16 09:56:48 +00:00
Duncan Sands
a7c97a7f5b Fixes due to lack of type-safety for ValueType: (1) ValueType
being passed instead of an opcode; (2) ValueType being passed
for isVolatile (!) in getLoad.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43028 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-16 09:07:20 +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
8b0b874987 Code clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43026 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-16 08:04:24 +00:00
Chris Lattner
59e84258cb implement promotion of select and select_cc, allowing MallocBench/gs to
work with type promotion on x86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43025 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-16 03:00:22 +00:00
Dan Gohman
c4c9660129 Teach IntrinsicLowering.cpp about the sin, cos, and pow intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43020 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 22:07:31 +00:00
Evan Cheng
4859e277f7 Make CalcLatency() non-recursive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43017 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 21:33:22 +00:00
Dan Gohman
82f209e421 Fix a typo in a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43016 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 21:10:03 +00:00
Dan Gohman
e9bb13d494 Document the -view-sunit-dags option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43015 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 21:07:59 +00:00
Dan Gohman
91c284c0a6 Document the new llvm.sin, llvm.cos, and llvm.pow intrinsics. Feedback
is welcome!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43007 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 20:30:11 +00:00
Chris Lattner
1de7c1dd6f Change LowerFP_TO_SINT to create the specific code it needs instead of
unconditionally creating an i64 bitcast.  With the future legalizer
design, operation legalization can't introduce new nodes with illegal
types.

This fixes the rest of olden on ppc32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43005 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 20:14:52 +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
Devang Patel
73d0e211a3 Add removeModuleProvider()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43002 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 19:56:32 +00:00
Dan Gohman
f656b985ec Reapply the fix in 42908 for this file. This changes the function names
from "test" to "foo" so that they don't match the grep -i ST.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43001 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 19:22:17 +00:00
Ted Kremenek
fd9c58adde Fixed incorrect renaming of method name (forgot two characters).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42999 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 19:15:48 +00:00
Ted Kremenek
85d03ae1ae Added more doxygen comments.
Renamed internal method of ImutAVLTree::RemoveMutableFlag to MarkImmutable.
Added enum for bit manipulation (more self-documentating).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42998 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 18:52:34 +00:00
Evan Cheng
f5c7359afa Fix PR1729: watch out for val# with no def.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42996 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 18:33:50 +00:00
Chris Lattner
85dd3be735 Move CreateStackTemporary out to SelectionDAG
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42995 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 17:48:57 +00:00
Chris Lattner
37ce9df0da add a new CreateStackTemporary helper method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42994 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 17:47:20 +00:00
Chris Lattner
cfc24007b1 implement promotion of BR_CC operands, fixing bisort on ppc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42992 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 17:16:12 +00:00
Chris Lattner
1296e9d306 updates from duncan
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42991 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 16:46:29 +00:00
Tanya Lattner
ba56fe801c Fix run line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42990 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 16:35:13 +00:00
Devang Patel
0eb3c86531 New test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42986 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 15:41:07 +00:00
Devang Patel
b9e981304b Achieve same result but use fewer lines of code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42985 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 15:31:35 +00:00
Neil Booth
686700e325 Fast-track obviously over-large and over-small exponents during decimal->
integer conversion.  In some such cases this makes us one or two orders
of magnitude faster than NetBSD's libc.  Glibc seems to have a similar
fast path.

Also, tighten up some upper bounds to save a bit of memory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42984 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 15:00:55 +00:00
Duncan Sands
65f8d3bf6b Fix some typos. Call getTypeToTransformTo rather than
getTypeToExpandTo.  The difference is that
getTypeToExpandTo gives the final result of expansion
(eg: i128 -> i32 on a 32 bit machine) while
getTypeToTransformTo does just one step (i128 -> i64).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42982 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 13:30:18 +00:00
Chris Lattner
01d029b82c One mundane change: Change ReplaceAllUsesOfValueWith to *optionally*
take a deleted nodes vector, instead of requiring it.

One more significant change:  Implement the start of a legalizer that
just works on types.  This legalizer is designed to run before the 
operation legalizer and ensure just that the input dag is transformed
into an output dag whose operand and result types are all legal, even
if the operations on those types are not.

This design/impl has the following advantages:

1. When finished, this will *significantly* reduce the amount of code in
   LegalizeDAG.cpp.  It will remove all the code related to promotion and
   expansion as well as splitting and scalarizing vectors.
2. The new code is very simple, idiomatic, and modular: unlike 
   LegalizeDAG.cpp, it has no 3000 line long functions. :)
3. The implementation is completely iterative instead of recursive, good
   for hacking on large dags without blowing out your stack.
4. The implementation updates nodes in place when possible instead of 
   deallocating and reallocating the entire graph that points to some 
   mutated node.
5. The code nicely separates out handling of operations with invalid 
   results from operations with invalid operands, making some cases
   simpler and easier to understand.
6. The new -debug-only=legalize-types option is very very handy :), 
   allowing you to easily understand what legalize types is doing.

This is not yet done.  Until the ifdef added to SelectionDAGISel.cpp is
enabled, this does nothing.  However, this code is sufficient to legalize
all of the code in 186.crafty, olden and freebench on an x86 machine.  The
biggest issues are:

1. Vectors aren't implemented at all yet
2. SoftFP is a mess, I need to talk to Evan about it.
3. No lowering to libcalls is implemented yet.
4. Various operations are missing etc.
5. There are FIXME's for stuff I hax0r'd out, like softfp.

Hey, at least it is a step in the right direction :).  If you'd like to help,
just enable the #ifdef in SelectionDAGISel.cpp and compile code with it.  If
this explodes it will tell you what needs to be implemented.  Help is 
certainly appreciated.

Once this goes in, we can do three things:

1. Add a new pass of dag combine between the "type legalizer" and "operation
   legalizer" passes.  This will let us catch some long-standing isel issues
   that we miss because operation legalization often obfuscates the dag with
   target-specific nodes.
2. We can rip out all of the type legalization code from LegalizeDAG.cpp,
   making it much smaller and simpler.  When that happens we can then 
   reimplement the core functionality left in it in a much more efficient and
   non-recursive way.
3. Once the whole legalizer is non-recursive, we can implement whole-function
   selectiondags maybe...



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42981 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 06:10:22 +00:00
Chris Lattner
3cb9351e8a One xform performed by LegalizeDAG is transformation of "store of fp" to "store of int".
Make two changes:
1) only xform "store of f32" if i32 is a legal type for the target.
2) only xform "store of f64" if either i64 or i32 are legal for the target.
3) if i64 isn't legal, manually lower to 2 stores of i32 instead of letting a
   later pass of legalize do it.  This is ugly, but helps future changes I'm 
   about to commit.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42980 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 05:46:06 +00:00
Chris Lattner
3cab1c72b5 avoid an APFloat copy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42979 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 05:34:10 +00:00
Chris Lattner
59afba0fe9 Add a (disabled by default) way to view the ID of a node.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42978 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 05:32:43 +00:00
Chris Lattner
91956887f0 remove dead enum, make setNodeId public.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42977 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 05:30:55 +00:00
Chris Lattner
1622768794 Fix 80 col violation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42976 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 05:30:27 +00:00
Dale Johannesen
6e64473603 Handle PPC long double in CBackend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42972 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 01:05:37 +00:00
Chris Lattner
7a3c85583d remove misleading comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42970 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 20:35:12 +00:00
Chris Lattner
fb5b11046b If a target doesn't have HasMULHU or HasUMUL_LOHI, ExpandOp would return
without lo/hi set.  Fall through to making a libcall instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42969 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 18:35:05 +00:00
Neil Booth
e5e0194583 Consolidate logic for creating NaNs. Silence compiler warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42966 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 10:39:51 +00:00
Neil Booth
caf19d79e5 Whether arithmetic is supported is a property of the semantics. Make it
so, and clean up the checks by putting them in an inline function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42965 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 10:29:28 +00:00
Neil Booth
1870f29c6c Separate out parsing of decimal number. Use this to only allocate
memory for the significand once up-front.  Also ignore insignificant
trailing zeroes; this saves unnecessary multiplications later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42964 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 10:16:12 +00:00
Evan Cheng
1074878fbf New test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42963 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 10:15:03 +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
34729256e8 When coalescing an EXTRACT_SUBREG and the dst register is a physical register,
the source register will be coalesced to the super register of the LHS. Properly
merge in the live ranges of the resulting coalesced interval that were part of
the original source interval to the live interval of the super-register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42961 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 10:08:34 +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
Dale Johannesen
296c176141 Fix type mismatch error in PPC Altivec (only causes
a problem when asserts are on).  From vecLib.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42959 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 01:58:32 +00:00
Dale Johannesen
5927d8e94d Disable some compile-time optimizations on PPC
long double.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42958 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 01:56:47 +00:00
Gordon Henriksen
8ac04ff5ac Fixing a typo. Found by Kevin André!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42956 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 00:34:53 +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
Chris Lattner
e33544ce55 Enhance the truncstore optimization code to handle shifted
values and propagate demanded bits through them in simple cases.

This allows this code:
void foo(char *P) {
   strcpy(P, "abc");
}
to compile to:

_foo:
        ldrb r3, [r1]
        ldrb r2, [r1, #+1]
        ldrb r12, [r1, #+2]!
        ldrb r1, [r1, #+1]
        strb r1, [r0, #+3]
        strb r2, [r0, #+1]
        strb r12, [r0, #+2]
        strb r3, [r0]
        bx lr

instead of:

_foo:
        ldrb r3, [r1, #+3]
        ldrb r2, [r1, #+2]
        orr r3, r2, r3, lsl #8
        ldrb r2, [r1, #+1]
        ldrb r1, [r1]
        orr r2, r1, r2, lsl #8
        orr r3, r2, r3, lsl #16
        strb r3, [r0]
        mov r2, r3, lsr #24
        strb r2, [r0, #+3]
        mov r2, r3, lsr #16
        strb r2, [r0, #+2]
        mov r3, r3, lsr #8
        strb r3, [r0, #+1]
        bx lr

testcase here: test/CodeGen/ARM/truncstore-dag-combine.ll

This also helps occasionally for X86 and other cases not involving 
unaligned load/stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42954 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-13 06:58:48 +00:00
Chris Lattner
f8f7cf3987 new testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42953 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-13 06:56:18 +00:00
Chris Lattner
2b4c279a8e Add a simple optimization to simplify the input to
truncate and truncstore instructions, based on the 
knowledge that they don't demand the top bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42952 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-13 06:35:54 +00:00