Arnold Schwaighofer
a2a4b475fc
Add support for intermodule tail calls on x86/32bit with
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GOT-style position independent code. Before only tail calls to
protected/hidden functions within the same module were optimized.
Now all function calls are tail call optimized.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47594 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 10:21:54 +00:00
Arnold Schwaighofer
865c68188a
Change the lowering of arguments for tail call optimized
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calls. Before arguments that could overwrite each other were
explicitly lowered to a stack slot, not giving the register allocator
a chance to optimize. Now a sequence of copyto/copyfrom virtual
registers ensures that arguments are loaded in (virtual) registers
before they are lowered to the stack slot (and might overwrite each
other). Also parameter stack slots are marked mutable for
(potentially) tail calling functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47593 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 09:19:59 +00:00
Evan Cheng
c886c460e4
This is possible:
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vr1 = extract_subreg vr2, 3
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vr3 = extract_subreg vr1, 2
The end result is vr3 is equal to vr2 with subidx 2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47592 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 08:03:41 +00:00
Chris Lattner
0254e7033a
Fix isNegatibleForFree to not return true for ConstantFP nodes
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after legalize. Just because a constant is legal (e.g. 0.0 in SSE)
doesn't mean that its negated value is legal (-0.0). We could make
this stronger by checking to see if the negated constant is actually
legal post negation, but it doesn't seem like a big deal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47591 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 07:04:54 +00:00
Evan Cheng
9bf12b5583
Fix PR2076. CodeGenPrepare now sinks address computation for inline asm memory
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operands into inline asm block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47589 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 02:42:37 +00:00
Evan Cheng
5c80760fdf
Refactor inline asm constraint matching code out of SDIsel into TargetLowering.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47587 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 02:33:44 +00:00
Devang Patel
9a8a88b72d
Remove debugging help.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47585 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 01:42:38 +00:00
Devang Patel
d9d99ff8e8
Update bitcode reader and writer to handle multiple return values.
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Take 2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47583 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 01:29:32 +00:00
Devang Patel
aaeb60ae40
Pass const vectors by reference.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47577 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 00:12:13 +00:00
Dan Gohman
545914311a
Revert the assert for MUL_LOHI with an unused high result; Chris
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pointed out that this isn't correct at -O0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47575 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 22:43:48 +00:00
Dale Johannesen
14e2ea9a55
Revise previous patch per review.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47573 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 22:29:22 +00:00
Dan Gohman
c2d9b5fcdf
Add an assert to verify that we don't see an
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{S,U}MUL_LOHI with an unused high value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47569 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 22:15:55 +00:00
Dan Gohman
fcf81db600
Remove the hack that turned an {S,U}MUL_LOHI with an unused high
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result into a MUL late in the X86 codegen process. ISD::MUL is
once again Legal on X86, so this is no longer needed. And, the
hack was suboptimal; see PR1874 for details.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47567 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 21:57:04 +00:00
Dan Gohman
f6283fd27b
Make some static variables const.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47566 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 21:39:34 +00:00
Dan Gohman
2e68b6f52d
Convert MaskedValueIsZero and all its users to use APInt. Also add
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a SignBitIsZero function to simplify a common use case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47561 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 21:11:39 +00:00
Evan Cheng
e83a27516c
All remat'ed loads cannot be folded into two-address code. Not just argument loads. This change doesn't really have any impact on codegen.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47557 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 19:24:01 +00:00
Dale Johannesen
079f2a66ae
Expand removal of MMX memory copies to allow 1 level
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of TokenFactor underneath chain (seems to be enough)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47554 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 19:20:14 +00:00
Duncan Sands
1a9c9df1db
In debug builds check that the key property holds: all
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result and operand types are legal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47546 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 16:21:21 +00:00
Evan Cheng
79a0c1e46c
Correctly determine whether a argument load can be folded into its uses.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47545 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 08:50:41 +00:00
Owen Anderson
c0808a7e1d
Fix an issue where GVN was performing the return slot optimization when it was
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not safe. This is fixed by more aggressively checking that the return slot is
not used elsewhere in the function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47544 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 04:08:09 +00:00
Evan Cheng
b9a905781e
Temporarily reverting 46959.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47542 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 03:57:32 +00:00
Owen Anderson
0f7ea1ab10
Fix an issue where GVN would try to use an instruction before its definition when performing return slot optimization.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47541 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 00:40:41 +00:00
Duncan Sands
14fd63cae8
Add support to LegalizeTypes for building legal vectors
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out of illegal elements (BUILD_VECTOR). Uses and beefs
up BUILD_PAIR, though it didn't really have to. Like
most of LegalizeTypes, does not support soft-float.
This cures all "make check" vector building failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47537 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-24 07:36:03 +00:00
Bill Wendling
181eb737b2
Some platforms use the same name for 32-bit and 64-bit registers (like
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%r3 on PPC) in their ASM files. However, it's hard for humans to read
during debugging. Adding a new field to the register data that lets you
specify a different name to be printed than the one that goes into the
ASM file -- %x3 instead of %r3, for instance.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47534 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-24 00:56:13 +00:00
Evan Cheng
1df439773c
Backing out r47521 for now. This has broken a number of tests.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47533 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 19:32:32 +00:00
Scott Michel
a59d469e9b
Merge current work back to tree to minimize diffs and drift. Major highlights
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for CellSPU modifications:
- SPUInstrInfo.td refactoring: "multiclass" really is _your_ friend.
- Other improvements based on refactoring effort in SPUISelLowering.cpp,
esp. in SPUISelLowering::PerformDAGCombine(), where zero amount shifts and
rotates are now eliminiated, other scalar-to-vector-to-scalar silliness
is also eliminated.
- 64-bit operations are being implemented, _muldi3.c gcc runtime now
compiles and generates the right code. More work still needs to be done.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47532 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 18:41:37 +00:00
Evan Cheng
249ded3fa8
Rematerialization logic was overly conservative when it comes to loads from fixed stack slots.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47529 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 03:38:34 +00:00
Evan Cheng
298bbe82cb
If remating a machine instr with virtual register operand, make sure the vr is avaliable at all uses regardless of whether it would be folded.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47526 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 02:14:42 +00:00
Evan Cheng
c19eca38ef
Turning on remat of pic loads.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47524 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 02:07:42 +00:00
Dan Gohman
61e015fe74
Fix a bug that caused opt and other tools to silently ignore
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invalid command-line options.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47523 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 01:55:25 +00:00
Evan Cheng
b2a0abce1e
No need recognize load from a fixed argument slot as re-materializable. LiveIntervalAnalysis already handles it as a special case.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47522 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 01:47:44 +00:00
Devang Patel
e9fabd94ab
Properly read and write bitcodes for multiple return values.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47521 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 01:44:55 +00:00
Evan Cheng
dd3465eed1
Recognize loads of arguments as re-materializable first. Therefore if isReallyTriviallyReMaterializable() returns true it doesn't confuse it as a "normal" re-materializable instruction.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47520 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 01:44:27 +00:00
Devang Patel
2007173203
Regenerate.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47519 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 01:17:37 +00:00
Devang Patel
155b8746ba
Use isa check instead of getTypeID() check.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47518 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 01:17:17 +00:00
Ted Kremenek
57daefa187
Fixed buffer overflow reported by Argiris Kirtzidis.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47517 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 01:11:40 +00:00
Devang Patel
377e04b926
print getresult operand and its type directly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47514 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 01:04:26 +00:00
Devang Patel
d7313c5608
Use dyn_cast instead of isa + cast.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47511 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 00:47:00 +00:00
Devang Patel
6bfc63bef9
Regenerate
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47509 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 00:38:56 +00:00
Devang Patel
57ef4f46c1
To support multiple return values, now ret instruction supports multiple operands instead of one aggregate operand.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47508 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 00:35:18 +00:00
Evan Cheng
313d4b8093
Fix spill weight updating bug.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47507 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-23 00:33:04 +00:00
Dale Johannesen
22c3979fca
Split ParameterAttributes.h, putting the complicated
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stuff into ParamAttrsList.h. Per feedback from
ParamAttrs changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47504 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 22:17:59 +00:00
Evan Cheng
672e550601
Same isPhysRegAvailable bug as local register allocator.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47500 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 20:31:32 +00:00
Evan Cheng
bcfa1ca976
Really really bad local register allocator bug. On X86, it was never using ESI, EDI, and EBP because of a bug in RALocal::isPhysRegAvailable(). For example, when
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it checks if ESI is available, it then looks at registers aliases to ESI. SIL is marked -2 (not allocatable) but isPhysRegAvailable() incorrectly assumes it is in use and returns false for ESI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47499 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 20:30:53 +00:00
Evan Cheng
9af7090392
Add debugging printfs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47496 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 19:57:06 +00:00
Devang Patel
bd41a064ed
Regenerate
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47495 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 19:31:30 +00:00
Devang Patel
1b76c759ac
Use SymbolicValueRef to parse getresult operand
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47494 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 19:31:15 +00:00
Evan Cheng
b2fd65f936
Make sure reload of implicit uses are issued before remat's.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47492 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 19:22:06 +00:00
Dale Johannesen
dc6c0f151b
Generated files for 47484.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47485 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 17:50:51 +00:00
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