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14145 Commits

Author SHA1 Message Date
Eric Christopher
09e4750919 Revert r160148 it seems to cause more problems than it should 
right now. We'll fix PR13303 a different way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163570 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 23:34:06 +00:00
Eric Christopher
4984e01fd5 80-col fixup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163569 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 23:34:03 +00:00
Eric Christopher
edf8bc8c88 80-col fixup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163568 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 23:34:00 +00:00
Eric Christopher
5c38de99f1 No reason to construct this twice. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163567 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 23:33:57 +00:00
Chad Rosier
24f5fddbdf [ms-inline asm] Properly emit the asm directives when the AsmPrinterVariant 
and InlineAsmVariant don't match.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163550 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 21:36:05 +00:00
Dmitri Gribenko
2de0572cae Remove redundant semicolons which are null statements. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163547 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 21:26:47 +00:00
Nadav Rotem
8631a90f46 Disable stack coloring because it makes dragonegg fail bootstrapping. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163545 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 21:17:58 +00:00
Chad Rosier
3b132fab0b [ms-inline asm] Pass the correct AsmVariant to the PrintAsmOperand() function 
and update the printOperand() function accordingly.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163544 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 21:10:49 +00:00
Nadav Rotem
b6d52a5b4a Enable stack coloring. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163539 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 20:15:49 +00:00
Nadav Rotem
6165dba25f Stack Coloring: Handle the case where END markers come before BEGIN markers properly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163530 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 18:51:09 +00:00
Michael Ilseman
10def396cb Fold multiply by 0 or 1 when in UnsafeFPMath mode in SelectionDAG::getNode(). 
This folding happens as early as possible for performance reasons, and to make sure it isn't foiled by other transforms (e.g. forming FMAs).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163519 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 17:00:37 +00:00
Michael Ilseman
06b9690463 whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163518 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 16:56:31 +00:00
James Molloy
8cd08bf4ac Fix an assertion failure when optimising a shufflevector incorrectly into concat_vectors, and a followup bug with SelectionDAG::getNode() creating nodes with invalid types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163511 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 14:01:21 +00:00
Nadav Rotem
ff1b63172d Minor cleanup. No functional change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163510 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 13:20:00 +00:00
Nadav Rotem
9438d1e351 Stack Coloring: Debug prints to print the slot number and not the array index. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163509 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 13:17:58 +00:00
Nadav Rotem
a7de8a61df Stack Coloring: When searching for disjoint regions, do not compare intervals twice or to theirself. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163508 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 12:47:38 +00:00
Nadav Rotem
e47feeb823 Stack Coloring: Add support for multiple regions of the same slot, within a single basic block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163507 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 12:39:35 +00:00
Nadav Rotem
8cc1494905 Fix a typo in the comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163496 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 08:51:46 +00:00
Nadav Rotem
0aa52ee04e Add an assertion that the frame index is indeed inside the declared lifetime region. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163495 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 08:44:15 +00:00
Nadav Rotem
9a2ae00c85 Teach the DAGBuilder about lifetime markers which are generated from PHINodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163494 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-10 08:43:23 +00:00
Craig Topper
956342b210 Teach DAG combiner to constant fold fneg of a BUILD_VECTOR of constants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163483 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-09 22:58:45 +00:00
Benjamin Kramer
11b4505899 LiveVariables: Compute a set of defs and kills to speed up updating LV during critical edge splitting. 
Previously we checked if the register is def'd in a block via the def/use list a
nd walked the list of kills to check if the register is killed in a block. Both
of these checks can be made much cheaper by walking the block first and
recording all defs and kills.

This reduces the compile time of the test case from PR13651 from 40s to 15s at
-O2. The compile time is still dominated by LV updating but now the main culprit
is SparseBitVector's slowness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163478 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-09 11:56:14 +00:00
Benjamin Kramer
a9e37c5eaf Fix alignment of .comm and .lcomm on mingw32. 
For some reason .lcomm uses byte alignment and .comm log2 alignment so we can't
use the same setting for both. Fix this by reintroducing the LCOMM enum.
I verified this against mingw's gcc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163420 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-07 21:08:01 +00:00
Chad Rosier
26c5d5f0a9 Fix indent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163416 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-07 20:23:29 +00:00
Chad Rosier
c53ade2889 Update function names to conform to guidelines. No functional change intended. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163401 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-07 18:16:38 +00:00
Benjamin Kramer
39646d96e7 MC: Overhaul handling of .lcomm 
- Darwin lied about not supporting .lcomm and turned it into zerofill in the
  asm parser. Push the zerofill-conversion down into macho-specific code.
- This makes the tri-state LCOMMType enum superfluous, there are no targets
  without .lcomm.
- Do proper error reporting when trying to use .lcomm with alignment on a target
  that doesn't support it.
- .comm and .lcomm alignment was parsed in bytes on COFF, should be power of 2.
- Fixes PR13755 (.lcomm crashes on ELF).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163395 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-07 17:25:13 +00:00
Michael Liao
1fdaee9995 Stop emitting lifetime region info when stack coloring is not enabled in O0 
- this should fix PR13780



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163370 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-07 05:13:00 +00:00
Manman Ren
77e300e8f0 Release build: guard dump functions with "ifndef NDEBUG" 
No functional change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163339 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-06 19:06:06 +00:00
Jakob Stoklund Olesen
45c5c57179 Allow overlaps between virtreg and physreg live ranges. 
The RegisterCoalescer understands overlapping live ranges where one
register is defined as a copy of the other. With this change, register
allocators using LiveRegMatrix can do the same, at least for copies
between physical and virtual registers.

When a physreg is defined by a copy from a virtreg, allow those live
ranges to overlap:

  %CL<def> = COPY %vreg11:sub_8bit; GR32_ABCD:%vreg11
  %vreg13<def,tied1> = SAR32rCL %vreg13<tied0>, %CL<imp-use,kill>

We can assign %vreg11 to %ECX, overlapping the live range of %CL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163336 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-06 18:15:23 +00:00
Jakob Stoklund Olesen
e617ccb80d Handle overlapping regunit intervals in LiveIntervals::addKillFlags(). 
We will soon allow virtual register live ranges to overlap regunit live
ranges when the physreg is defined as a copy of the virtreg:

  %EAX = COPY %vreg5
  FOO %vreg5
  BAR %EAX<kill>

There is no real interference since %vreg5 and %EAX have the same value
where they overlap.

This patch prevents addKillFlags from adding virtreg kill flags to FOO
where the assigned physreg is overlapping the virtual register live
range.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163335 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-06 18:15:18 +00:00
Jakob Stoklund Olesen
f9dff0e0e4 Clear kill flags while computing live ranges. 
Kill flags are difficult to maintain, and liveness queries are better
handled by live intervals.

Kill flags are reinserted after register allocation by addKillFlags().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163334 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-06 18:15:15 +00:00
Roman Divacky
5177b3a8c4 Dont cast away const needlessly. Found by gcc48 -Wcast-qual. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163324 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-06 15:42:13 +00:00
Nadav Rotem
79cb162e5d Disable stack coloring by default in order to resolve the i386 failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163316 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-06 14:27:06 +00:00
Nadav Rotem
e757640df0 Fix a few old-GCC warnings. No functional change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163309 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-06 11:13:55 +00:00
Nadav Rotem
c05d30601c Add a new optimization pass: Stack Coloring, that merges disjoint static allocations (allocas). Allocas are known to be 
disjoint if they are marked by disjoint lifetime markers (@llvm.lifetime.XXX intrinsics).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163299 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-06 09:17:37 +00:00
Chad Rosier
366df7945f [ms-inline asm] Use the asm dialect from the MI to set the parser dialect. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163273 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 23:57:37 +00:00
Chad Rosier
2f1d815479 Cleanup a few magic numbers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163263 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 22:40:13 +00:00
Roman Divacky
5932429765 Stop casting away const qualifier needlessly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163258 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 22:26:57 +00:00
Chad Rosier
77fffa6fdd [ms-inline asm] We only need one bit to represent the AsmDialect in the 
MachineInstr.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163257 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 22:17:43 +00:00
Roman Divacky
2943e37804 Constify this properly. Found by gcc48 -Wcast-qual. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163256 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 22:15:49 +00:00
Roman Divacky
141e99745a Constify SDNodeIterator an stop its only non-const user being cast stripped 
of its constness. Found by gcc48 -Wcast-qual.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163254 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 22:03:34 +00:00
Chad Rosier
576cd11ab8 [ms-inline asm] Propagate the asm dialect into the MachineInstr representation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163243 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 21:00:58 +00:00
Roman Divacky
15d0c81b24 Remove unused typedefs gcc4.8 warns about. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163225 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 17:55:46 +00:00
Silviu Baranga
3d5e161fe4 Fixed the DAG combiner to better handle the folding of AND nodes for vector types. The previous code was making the assumption that the length of the bitmask returned by isConstantSplat was equal to the size of the vector type. Now we first make sure that the splat value has at least the length of the vector lane type, then we only use as many fields as we have available in the splat value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163203 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 08:57:21 +00:00
Logan Chien
ec90cc8b0f Reorder the comments of EmitExceptionTable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163194 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 06:28:26 +00:00
Craig Topper
f6dc792df1 Convert vextracti128/vextractf128 intrinsics to extract_subvector at DAG build time. Similar was previously done for vinserti128/vinsertf128. Add patterns for folding these extract_subvectors with stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163192 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 05:48:09 +00:00
Jakob Stoklund Olesen
f363ebdb03 Search the whole instruction for tied operands. 
Implicit uses can be dynamically tied to defs. This will soon be used
for predicated instructions on ARM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163177 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-04 22:59:30 +00:00
Jakob Stoklund Olesen
4f1a56ce3c Typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163154 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-04 18:44:43 +00:00
Jakob Stoklund Olesen
99c416c9f7 Actually use the MachineOperand field for isRegTiedToDefOperand(). 
The MachineOperand::TiedTo field was maintained, but not used.

This patch enables it in isRegTiedToDefOperand() and
isRegTiedToUseOperand() which are the actual functions use by the
register allocator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163153 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-04 18:43:25 +00:00
Jakob Stoklund Olesen
daddf07497 Move tie checks into MachineVerifier::visitMachineOperand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163152 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-04 18:38:28 +00:00