Commit Graph

41967 Commits

Author SHA1 Message Date
Evan Cheng
b89be6150a Add RCBarriers to TargetInstrDesc. It's a list of register classes the given instruction can "clobber". For example, on x86 the call instruction can modify all of the XMM and fp stack registers.
TableGen has been taught to generate the lists from instruction definitions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57722 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 21:00:09 +00:00
Evan Cheng
af42fe36ac Fix PR2898. Spiller delete a store for reuse before it knows for sure the reuse happened.
Patch by Lang Hames!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57720 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 20:56:41 +00:00
Chris Lattner
cfc14c153a add support for 128 bit aggregates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57715 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 19:59:51 +00:00
Bill Wendling
a9f0cc4ced The Dwarf writer was comparing mangled and unmangled names for C++ code when we
have an unreachable block in a function. This was triggering the assert. This is
a horrid hack to cover this up.

Oh! for a good debug info architecture!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57714 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 18:48:57 +00:00
Mon P Wang
c4d1021ead Added MemIntrinsicNode which is useful to represent target intrinsics that
touches memory and need an associated MemOperand


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57712 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 18:22:58 +00:00
Dan Gohman
8c1a6ca22a Factor out the code for mapping LLVM IR condition opcodes to
ISD condition opcodes into helper functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57710 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 18:18:45 +00:00
Chris Lattner
1fa7198f36 add support for 128 bit inputs on both x86-64 and x86-32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57709 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 18:15:05 +00:00
Chris Lattner
3d0c4c4657 Fix a bug where the x86 backend would reject 64-bit r constraints when
in 32-bit mode instead of assigning a register pair.  This has nothing to
do with PR2356, but I happened to notice it while working on it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57704 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 17:59:52 +00:00
Chris Lattner
0c52644cd8 Fix PR2356 on PowerPC: if we have an input and output that are tied together
that have different sizes (e.g. i32 and i64) make sure to reserve registers for
the bigger operand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57699 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 17:52:49 +00:00
Chris Lattner
0f046c3c99 remove an xfailed test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57695 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 17:26:48 +00:00
Chris Lattner
42a3adc346 remove this test: it is xfailed anyway, and is failing for a reason
other than why it was xfailed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57694 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 17:26:19 +00:00
Evan Cheng
4b299d4ebd Fix lfence and mfence encoding. These look like MRM5r and MRM6r instructions except they do not have any operands. The RegModRM byte is encoded with register number 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57692 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 17:14:20 +00:00
Evan Cheng
244911bdee getX86RegNum has long been moved to X86RegisterInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57691 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 17:12:18 +00:00
Chris Lattner
81249c95ce refactor some code into a helper method, no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57690 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 17:05:25 +00:00
Chris Lattner
6bdcda3d3e Keep track of *which* input constraint matches an output
constraint.  Reject asms where an output has multiple
input constraints tied to it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57687 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 16:47:46 +00:00
Chris Lattner
58f15c482a add an assert so that PR2356 explodes instead of running off an
array.  Improve some minor comments, refactor some helpers in
AsmOperandInfo.  No functionality change for valid code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57686 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 16:21:11 +00:00
Gabor Greif
86af90d802 remove spurious space in link
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57677 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 14:43:58 +00:00
Gabor Greif
4fbed982fb Add comment on how tagged pointers are
distinguished from normal (untagged) ones
as per review comment.

I am sufficiently unaquainted with doxygen to
defer the markup to someone with more experience.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57676 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 08:31:36 +00:00
Evan Cheng
6784598895 Fix a very subtle spiller bug: UpdateKills should not forget to track defs of aliases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57673 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 06:16:07 +00:00
Chris Lattner
abec474236 add some simple hacky long double support for the CBE. This
should work for intel long double, but ppc long double aborts
in convert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57672 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 06:11:48 +00:00
Dan Gohman
b2a1432507 Use INT64_C to emit constant values, to avoid problems with
constants that don't fit in an int. This fixes
"this decimal constant is unsigned only in ISO C90"
warnings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57668 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 04:40:39 +00:00
Dan Gohman
63f97201dc Fun x86 encoding tricks: when adding an immediate value of 128,
use a SUB instruction instead of an ADD, because -128 can be
encoded in an 8-bit signed immediate field, while +128 can't be.
This avoids the need for a 32-bit immediate field in this case.

A similar optimization applies to 64-bit adds with 0x80000000,
with the 32-bit signed immediate field.

To support this, teach tablegen how to handle 64-bit constants.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57663 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 01:33:43 +00:00
Dan Gohman
74feef261a Define patterns for shld and shrd that match immediate
shift counts, and patterns that match dynamic shift counts
when the subtract is obscured by a truncate node.

Add DAGCombiner support for recognizing rotate patterns
when the shift counts are defined by truncate nodes.

Fix and simplify the code for commuting shld and shrd
instructions to work even when the given instruction doesn't
have a parent, and when the caller needs a new instruction.

These changes allow LLVM to use the shld, shrd, rol, and ror
instructions on x86 to replace equivalent code using two
shifts and an or in many more cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57662 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 01:23:35 +00:00
Dan Gohman
a1fcd77ccf Use 0 instead of false to return a null pointer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57660 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 00:56:52 +00:00
Dan Gohman
c90a5c2878 Fix this test so it actually runs the grep lines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57653 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 23:57:54 +00:00
Dan Gohman
f522068412 Trim #includes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57649 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 20:18:31 +00:00
Chris Lattner
cc4ba7834f fix typo noticed by sdt
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57644 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 17:02:50 +00:00
Gabor Greif
023f84ecaf Introduce a typing refinenement on tagged data
using the 'volatile' qualifier. This should not have any operational consequences
on code, because tags should always be stripped off (giving a non-volatile pointer)
before dereferencing. The new qualification is there to catch some attempts to use
tagged pointers in a context where an untagged pointer is appropriate.

Notably this approach does not catch dereferencing of tagged pointers, but helps
in separating the two concepts a bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57641 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 15:33:02 +00:00
Mikhail Glushenkov
cc30d9caa5 Re-apply Makefile changes. Fix build with srcdir != objdir.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57636 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 14:02:29 +00:00
Duncan Sands
e79f5ef4e7 Fix warnings about mb/me being potentially used
uninitialized in these functions with gcc-4.3.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57635 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 13:02:33 +00:00
Duncan Sands
ddbe5cbb10 Fix "large integer implicitly truncated to unsigned type"
warning on x86-64 with gcc-4.3.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57634 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 09:14:58 +00:00
Duncan Sands
078ae1e6ee Testcase for PR2762.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57633 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 08:56:46 +00:00
Chris Lattner
a354825650 add some notes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57631 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 07:04:06 +00:00
Chris Lattner
c74092ba8f add some notes and a file to collect unimplemented features in the
x86 backend.  These will all be answered with "patches welcome", so
a PR doesn't help drive them along.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57630 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 06:46:12 +00:00
Chris Lattner
0d5d05b553 mark some targets as experimental. Andrew, if you think that Alpha is
basically working, feel free to remove the tag.  The other targets have
really basic things that break them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57628 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 06:16:50 +00:00
Chris Lattner
d3745476de Verify prefetch arguments, PR2576.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57626 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 06:00:36 +00:00
Chris Lattner
868510328f apply Eli's patch for PR2165 and provide a testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57625 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 05:26:51 +00:00
Dan Gohman
8e8b8a223c Const-ify several TargetInstrInfo methods.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57622 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 01:49:15 +00:00
Dan Gohman
fcab2bd2f3 Remove an unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57621 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 01:47:47 +00:00
Dan Gohman
9a8af451a3 Fix Instruction::isIdenticalTo and isSameOperationAs to recognize
additional information in Loads, Stores, Calls, Invokes,
InsertValueInsts, and ExtractValueInsts.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57620 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 01:24:45 +00:00
Zhongxing Xu
1a26daa9c3 Fix a calculation error in comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57619 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 01:21:44 +00:00
Dan Gohman
131161bc6e Rename AliasSet to SubRegs, to reflect changes in the surrounding code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57618 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 01:06:18 +00:00
Dan Gohman
7ddcadc7ee Move the include of MachineLocation.h into MachineModuleInfo.h
because it declares a std::vector<MachineMove>, and strict
concept checking requires the definition of MachineMove to be
available.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57617 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 00:20:14 +00:00
Dan Gohman
254a886057 Implement a SmallVector insert method that can insert multiple
copies of a value, and add several additional utilities to make
SmallVector better conform to the Container concept.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57616 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 00:15:24 +00:00
Dan Gohman
3d4227bec5 Fix several places that called mapped_iterator's constructor without
passing in a function object.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57615 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 00:12:39 +00:00
Dan Gohman
b382c4dc23 Fix a subtle bug in DeadMachineInstructionElim's liveness
computation. A def of a register doesn't necessarily kill
live super-registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57614 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 00:11:23 +00:00
Dan Gohman
a7250ddc28 Fix the predicate for memop64 to be a regular load, not just
an unindexed load.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57612 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 00:03:00 +00:00
Dan Gohman
2276a7bc8e Teach instcombine's visitLoad to scan back several instructions
to find opportunities for store-to-load forwarding or load CSE,
in the same way that visitStore scans back to do DSE. Also, define
a new helper function for testing whether the addresses of two
memory accesses are known to have the same value, and use it in
both visitStore and visitLoad.

These two changes allow instcombine to eliminate loads in code
produced by front-ends that frequently emit obviously redundant
addressing for memory references.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57608 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-15 23:19:35 +00:00
Dan Gohman
95c2cc51eb Correct the name of isTrapping in comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57606 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-15 22:56:21 +00:00
Dan Gohman
65ac2fa880 Fix whitespace in a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57605 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-15 22:55:03 +00:00