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b3564aa836
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21993 Commits

Author SHA1 Message Date
Dan Gohman
b3564aa836 Convert the last remaining users of the non-APInt form of 
ComputeMaskedBits to use the APInt form, and remove the
non-APInt form.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47654 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 01:23:58 +00:00
Devang Patel
e6be34a53e Add comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47653 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 01:20:54 +00:00
Chris Lattner
ba309d43aa add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47652 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 01:17:20 +00:00
Dan Gohman
7b8d4a9eef Convert SimplifyDemandedMask and ShrinkDemandedConstant to use APInt. 
Change several cases in SimplifyDemandedMask that don't ever do any
simplifying to reuse the logic in ComputeMaskedBits instead of
duplicating it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47648 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 00:25:32 +00:00
Devang Patel
13b823c584 regenerate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47642 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 23:19:08 +00:00
Devang Patel
43a1bb3984 Add assert. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47641 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 23:17:50 +00:00
Owen Anderson
77db50f68f Fix an issue where GVN had the sizes of the two memcpy's reverse, resulting 
in an invalid transformation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47639 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 23:06:17 +00:00
Devang Patel
8e50760dfe Add assert to check return type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47637 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 22:55:21 +00:00
Arnold Schwaighofer
258bb1b8e8 Refactor according to Evan's and Anton's suggestions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47635 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 22:21:54 +00:00
Devang Patel
b82b7f2119 regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47634 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 22:17:48 +00:00
Devang Patel
53284d39cd Remove unncessary ReturnInst constructors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47633 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 22:12:58 +00:00
Chris Lattner
fe42462164 Use a smallvector for inactiveCounts and initialize it lazily 
instead of init'ing it maximally to zeros on entry.  getFreePhysReg
is pretty hot and only a few elements are typically used.  This speeds
up linscan by 5% on 176.gcc.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47631 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 22:08:41 +00:00
Bill Wendling
e6d088acc9 Rename PrintableName to Name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47629 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 21:47:57 +00:00
Bill Wendling
74ab84c31e Change "Name" to "AsmName" in the target register info. Gee, a refactoring tool 
would have been a Godsend here!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47625 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 21:11:01 +00:00
Evan Cheng
4d535cadf1 Enable -coalescer-commute-instrs by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47623 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 20:40:22 +00:00
Devang Patel
f4511cd8fb Use SmallVector while constructing ReturnInst. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47619 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 19:38:17 +00:00
Devang Patel
fea9830468 Avoid const_casts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47616 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 19:15:26 +00:00
Gabor Greif
53bdbd7565 fix http://llvm.org/bugs/show_bug.cgi?id=2097 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47615 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 19:13:21 +00:00
Devang Patel
f8989657a7 Remove unnecessary getOperand/setOperand overriders. 
Simplify getReturnValue()


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47614 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 19:08:13 +00:00
Dan Gohman
d4cf992230 Avoid aborting on invalid shift counts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47612 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 18:50:50 +00:00
Devang Patel
814ebd77b0 Unify to ReturnInst::init() member functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47611 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 18:49:29 +00:00
Eli Friedman
9ec8095485 Fix for pr2093: direct operands aren't necessarily addresses, so don't 
try to simplify them.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47610 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 18:37:49 +00:00
Devang Patel
64d4e61259 Optimize most common case by using single RetVal in ReturnInst. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47607 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 17:56:20 +00:00
Arnold Schwaighofer
16a3e52d08 Correct function comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47606 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 17:50:59 +00:00
Chris Lattner
aeecb6c73a Fix PR2096, a regression introduced with my patch last night. This 
also fixes cfrac, flops, and 175.vpr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47605 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 17:09:59 +00:00
Duncan Sands
212a11c417 Fix a nasty bug in LegalizeTypes (spotted in 
CodeGen/PowerPC/illegal-element-type.ll): suppose
a node X is processed, and processing maps it to
a node Y.  Then X continues to exist in the DAG,
but with no users.  While processing some other
node, a new node may be created that happens to
be equal to X, and thus X will be reused rather
than a truly new node.  This can cause X to
"magically reappear", and since it is in the
Processed state in will not be reprocessed, so
at the end of type legalization the illegal node
X can still be present.  The solution is to replace
X with Y whenever X gets resurrected like this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47601 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 11:21:42 +00:00
Bill Wendling
85db3a96b4 De-tabify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47600 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 10:57:23 +00:00
Bill Wendling
587c01d674 De-tabify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47599 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 10:53:30 +00:00
Bill Wendling
f059deb8dd De-tabify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47598 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 10:51:52 +00:00
Arnold Schwaighofer
a2a4b475fc Add support for intermodule tail calls on x86/32bit with 
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 
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: 
vr1 = extract_subreg vr2, 3
...
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 
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 
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. 
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. 
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. 
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. 
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 
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. 
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 
{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 
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. 
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 
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. 
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 
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 
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. 
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 
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. 
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