Dale Johannesen
08e78b18b8
Pass alignment on ByVal parameters, from FE, all
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the way through. It is now used for codegen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47484 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 17:49:45 +00:00
Evan Cheng
d70dbb5d62
Enable re-materialization of instructions which have virtual register operands if
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the definition of the operand also reaches its uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47475 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 09:24:50 +00:00
Evan Cheng
becda48f88
Fix compiler warning.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47468 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 01:48:00 +00:00
Dan Gohman
9e255b7df5
Fix a regression in 403.gcc and 186.crafty introduced in 47383. To test
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that a value is >= 32, check that all of the high bits are zero, not
just one or more.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47467 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 01:12:31 +00:00
Chris Lattner
69e6a8d5a8
Make the clobber analysis a bit more smart: we only are careful about
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early clobbers if the clobber list contains a *register* not some thing
like {memory}, {dirflag} etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47457 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 20:54:31 +00:00
Chris Lattner
0fe71e9bb1
Treat clobber operands like early clobbers: if we have
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any, we force sdisel to do all regalloc for an asm. This
leads to gross but correct codegen.
This fixes the rest of PR2078.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47454 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 19:43:13 +00:00
Bill Wendling
1d5e8196c0
Clear PhysRegPartUse for the sub register as well.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47453 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 19:35:27 +00:00
Bill Wendling
20b76ab3c7
Adjust the MaxAlignment for the special register scavenging spill slot.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47452 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 19:33:53 +00:00
Evan Cheng
304983b93e
Help testing.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47448 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 19:20:21 +00:00
Andrew Lenharth
c1c7bd610a
Better names as per Evan's request
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47435 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 16:11:38 +00:00
Andrew Lenharth
ab0b949e0e
Atomic op support. If any gcc test uses __sync builtins, it might start failing on archs that haven't implemented them yet
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47430 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 06:45:13 +00:00
Chris Lattner
f9853bc0d4
Add support for matching mem operands. This fixes PR1133, patch by
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Eli Friedman. This implements CodeGen/Generic/2008-02-20-MatchingMem.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47428 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 05:27:19 +00:00
Chris Lattner
7cbeb2431c
Fix a (harmless) but where vregs were added to the used reg lists for
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inline asms.
Fix PR2078 by marking aliases of registers used when a register is
marked used. This prevents EAX from being allocated when AX is listed
in the clobber set for the asm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47426 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 04:55:52 +00:00
Evan Cheng
063284c001
Clean up some spilling code using MachineRegisterInfo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47416 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 00:34:19 +00:00
Bill Wendling
c927cc8731
Remove one of the fixmes that I put in there. From Evan:
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No need to go up more levels. A def of a register also sets its sub-registers
(so if PhysRegInfo[SuperReg] is NULL, it means SuperReg's super registers are
not previously defined).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47399 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 20:56:45 +00:00
Bill Wendling
55574c2cea
Improve some comments explaining the "handle kills" stuff better.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47395 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 19:35:34 +00:00
Bill Wendling
fe8276cec2
Fix comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47389 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 19:09:14 +00:00
Devang Patel
c40a84a877
assert is more effective reminder then FIXME tag for unimplemented features.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47388 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 18:37:40 +00:00
Duncan Sands
f83b1f63dd
LegalizeTypes support for scalarizing a vector store
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and splitting extract_subvector. This fixes nine
"make check" testcases, for example
2008-02-04-ExtractSubvector.ll and (partially)
CodeGen/Generic/vector.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47384 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 17:38:09 +00:00
Dan Gohman
91dc17ba49
Convert Legalize to use the APInt form of ComputeMaskedBits.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47383 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 16:57:27 +00:00
Dan Gohman
b5660dc822
Add explicit keywords.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47382 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 16:44:09 +00:00
Dan Gohman
948d8eadec
Convert DAGCombiner to use the APInt form of ComputeMaskedBits.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47381 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 16:33:30 +00:00
Dan Gohman
ca93a43e84
Use APInt::intersects.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47380 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 16:30:17 +00:00
Anton Korobeynikov
4aefd6b7d4
Fix newly-introduced 4.3 warnings
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47375 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 12:07:57 +00:00
Anton Korobeynikov
4c71dfe356
Update gcc 4.3 warnings fix patch with recent head changes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47368 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 11:10:28 +00:00
Anton Korobeynikov
ae9f3a3b7c
Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47367 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 11:08:44 +00:00
Bill Wendling
6d794746b7
Added some comments and reformatted others. No functionality change.
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Added two "FIXMEs" for code that looks dubious to me (but I could be
wrong).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47366 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 09:15:16 +00:00
Bill Wendling
420cdebbcb
More constification of things. More comments added. No functionality
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changes. (Sorry for any formatting changes that creeped in.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47362 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 07:36:31 +00:00
Chris Lattner
19fc1d3742
Fix an incredibly subtle bug exposed by Ted's change to APInt profiling.
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AddNodeIDNode does profiling for a ConstantSDNode, but so does
SelectionDAG::getConstant. This profiling should be moved to a common
static function in ConstantSDNode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47359 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 06:28:01 +00:00
Bill Wendling
90a3868fe5
No functionality change:
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- Constified some MachineOperand values.
- Added/Modified some comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47358 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 06:10:21 +00:00
Devang Patel
40a04216da
Add GetResultInst. First step for multiple return value support.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47348 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 22:15:16 +00:00
Evan Cheng
31886dbe37
PR1909: Tail merging pass ran wild. It makes no sense to merge blocks in order to save a single instruction since a branch will be inserted for each BB.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47301 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 02:09:37 +00:00
Evan Cheng
efec751a1b
- When DAG combiner is folding a bit convert into a BUILD_VECTOR, it should check if it's essentially a SCALAR_TO_VECTOR. Avoid turning (v8i16) <10, u, u, u> to <10, 0, u, u, u, u, u, u>. Instead, simply convert it to a SCALAR_TO_VECTOR of the proper type.
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- X86 now normalize SCALAR_TO_VECTOR to (BIT_CONVERT (v4i32 SCALAR_TO_VECTOR)). Get rid of X86ISD::S2VEC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47290 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 23:04:32 +00:00
Evan Cheng
a9407f5937
- Remove the previous check which broke coalescer-commute3.ll
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- For now, conservatively ignore copy MI whose source is a physical register. Commuting its def MI can cause a physical register live interval to be live through a loop (since we know it's live coming into the def MI).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47281 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 18:56:31 +00:00
Roman Levenstein
8dd25288f9
New helper function getMBBFromIndex() that given an index in any instruction of an MBB returns a pointer the MBB. Reviewed by Evan.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47267 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 09:35:30 +00:00
Evan Cheng
96cfff0906
For now, avoid commuting def MI for copy MI's whose source is not killed. That simply trade a live interval for another and because only the non-two-address operands can be folded into loads, may end up pessimising code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47262 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 08:40:53 +00:00
Andrew Lenharth
d497d9fab6
I cannot find a libgcc function for this builtin. Therefor expanding it to a noop (which is how it use to be treated). If someone who knows the x86 backend better than me could tell me how to get a lock prefix on an instruction, that would be nice to complete x86 support.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47213 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-16 14:46:26 +00:00
Duncan Sands
051bb7b075
Teach LegalizeTypes how to expand the operands of
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br_cc. This fixes 5 "make check" failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47212 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-16 10:29:26 +00:00
Evan Cheng
559f4224d6
Refactor some code; check if commuteInstruction is able to commute the instruction.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47208 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-16 02:32:17 +00:00
Andrew Lenharth
22c5c1b2df
llvm.memory.barrier, and impl for x86 and alpha
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47204 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-16 01:24:58 +00:00
Bill Wendling
527c250a90
Fix typos.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47200 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-16 01:09:25 +00:00
Dan Gohman
42a77880a8
Rename CountMemOperands to ComputeMemOperandsEnd to reflect what
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it actually does. Simplify CountOperands a little by reusing
ComputeMemOperandsEnd. And reword some comments for both.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47198 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-16 00:36:48 +00:00
Dan Gohman
94ebde1d45
Revert 47177, which was incorrect.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47196 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-16 00:25:40 +00:00
Scott Michel
0123b7dcfa
Make tblgen a little smarter about constants smaller than i32. Currently,
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tblgen will complain if a sign-extended constant does not fit into a
data type smaller than i32, e.g., i16. This causes a problem when certain
hex constants are used, such as 0xff for byte masks or immediate xor
values.
tblgen will try the sign-extended value first and, if the sign extended
value would overflow, it tries to see if the unsigned value will fit.
Consequently, a software developer can now safely incant:
(XORHIr16 R16C:$rA, 0xffff)
which is somewhat clearer and more informative than incanting:
(XORHIr16 R16C:$rA, (i16 -1))
even if the two are bitwise equivalent.
Tblgen also outputs the 64-bit unsigned constant in the generated ISel code
when getTargetConstant() is invoked.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47188 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-15 23:05:48 +00:00
Evan Cheng
bd3e5aac74
The copy instruction being coalesced will be removed, it is not a kill.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47179 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-15 21:36:51 +00:00
Dan Gohman
53c607f562
Skip over the defs and start at the uses when looking for operands
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with the TIED_TO attribute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47177 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-15 20:59:17 +00:00
Dan Gohman
3b66555c53
Use the TargetInstrDescr to determine the number of operands
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that should be checked for the TIED_TO attribute instead of
using CountOperands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47176 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-15 20:50:13 +00:00
Duncan Sands
ca3a56f2fb
Teach LegalizeTypes how to promote the flags
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in a ret node. These are created as i32 constants
but on some platforms i32 is not legal. This
fixes 26 "make check" failures, for example
Alpha/2005-07-12-TwoMallocCalls.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47172 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-15 19:34:17 +00:00
Evan Cheng
c8d044e4f7
- Removing the infamous r2rMap_ and rep() method. Now the coalescer will update
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register defs and uses after each successful coalescing.
- Also removed a number of hacks and fixed some subtle kill information bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47167 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-15 18:24:29 +00:00
Evan Cheng
f20db15954
Added CommuteChangesDestination(). This returns true if commuting the specified
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machine instr will change its definition register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47166 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-15 18:21:33 +00:00