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Author SHA1 Message Date
Duncan Sands
5d0392c6b3 Factorize code: remove variants of "strip off 
pointer bitcasts and GEP's", and centralize the
logic in Value::getUnderlyingObject.  The
difference with stripPointerCasts is that
stripPointerCasts only strips GEPs if all
indices are zero, while getUnderlyingObject
strips GEPs no matter what the indices are.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56922 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 15:25:41 +00:00
Dan Gohman
38ac062c2f Fold trivial two-operand tokenfactors where the operands are equal 
immediately.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56921 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 15:11:19 +00:00
Dan Gohman
10b49489bf Don't prepend a space character for constants in Value::print. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56920 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 15:09:37 +00:00
Dan Gohman
929d3eb171 Fix typos in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56919 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 15:07:49 +00:00
Dan Gohman
e7891c705c nounwind-ify this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56918 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 15:07:14 +00:00
Nuno Lopes
86364023e6 revert the addition of Preverves(CallGraph), per Duncan's comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56917 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 09:13:40 +00:00
Dan Gohman
2662d55866 Mark CALL instructions as having a Use of ESP/RSP. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56911 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 04:14:30 +00:00
Dan Gohman
e4c38bac31 Don't leave an output file in the test directory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56910 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 04:13:23 +00:00
Dan Gohman
586b7b7547 Call ScalarEvolution's deleteValueFromRecords before deleting an 
instruction, not after. This fixes some uses of free'd memory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56908 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 02:02:03 +00:00
Bill Wendling
ae595dc9da Moved this option to the front-end. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56901 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 01:02:18 +00:00
Bill Wendling
6158d8492c Implement the -fno-builtin option in the front-end, not in the back-end. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56900 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 00:59:58 +00:00
Dan Gohman
70695fee51 Use explicit target-triples to unbreak this test on non-darwin systems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56896 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 00:25:38 +00:00
Owen Anderson
05472ee54b Mark merged-in VNInfo's as being PHIKilled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56893 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 23:58:47 +00:00
Owen Anderson
309c6162c6 Fix a simple error in renumbering kill markaers, that took an inordinant amount of time to track down. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56889 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 22:51:54 +00:00
Bill Wendling
6e08738d4b Just don't transform this memset into "bzero" if no-builtin is specified. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56888 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 22:05:33 +00:00
Nuno Lopes
0483d018c4 add preserversCFG() + preservers(CallGraph) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56887 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 22:04:30 +00:00
Bill Wendling
fd8ca5a0ef - Initialize "--no-builtin" to "false". 
- Testcase for r56885.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56886 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 21:40:30 +00:00
Bill Wendling
6f287b22d2 Add the new `-no-builtin' flag. This flag is meant to mimic the GCC 
`-fno-builtin' flag. Currently, it's used to replace "memset" with "_bzero"
instead of "__bzero" on Darwin10+. This arguably violates the meaning of this
flag, but is currently sufficient. The meaning of this flag should become more
specific over time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56885 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 21:22:07 +00:00
Dan Gohman
5ec9efd61b Move the primary fast-isel top-level comments to FastISel.cpp, where 
they'll be a little more visible. Also, update and reword them a bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56877 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 20:48:29 +00:00
Nuno Lopes
dd7c3e4e56 add AU.setPreservesCFG() since this pass only adds and removes function attributes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56868 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 18:34:38 +00:00
Dan Gohman
f06c835f76 Optimize SelectionDAG's AssignTopologicalOrder even further. 
Completely eliminate the TopOrder std::vector. Instead, sort
the AllNodes list in place. This also eliminates the need to
call AllNodes.size(), a linear-time operation, before
performing the sort.

Also, eliminate the Sources temporary std::vector, since it
essentially duplicates the sorted result as it is being
built.

This also changes the direction of the topological sort
from bottom-up to top-down. The AllNodes list starts out in
roughly top-down order, so this reduces the amount of
reordering needed. Top-down is also more convenient for
Legalize, and ISel needed only minor adjustments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56867 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 18:30:35 +00:00
Nuno Lopes
21420dfae1 ignore generated files 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56866 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 18:15:04 +00:00
Evan Cheng
18314dc741 Add runStaticConstructorsDestructors which runs ctors / dtors of a single module. Patch by David Chisnall. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56849 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 15:51:21 +00:00
Evan Cheng
dc37786595 Re-apply 56835 along with header file changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56848 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 15:44:16 +00:00
Duncan Sands
f3b23188d5 Stacker is dead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56844 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 15:18:29 +00:00
Duncan Sands
46292be362 Revert commit 56835 since it breaks the build. 
"If a re-materializable instruction has a register
operand, the spiller will change the register operand's
spill weight to HUGE_VAL to avoid it being spilled.
However, if the operand is already in the queue ready
to be spilled, avoid re-materializing it".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56837 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 10:00:30 +00:00
Evan Cheng
d41474d2c0 If a re-materializable instruction has a register operand, the spiller will change the register operand's spill weight to HUGE_VAL to avoid it being spilled. However, if the operand is already in the queue ready to be spilled, avoid re-materializing it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56835 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 06:36:58 +00:00
Nick Lewycky
a06cf82a7b Fix misoptimization of: xor i1 (icmp eq (X, C1), icmp s[lg]t (X, C2)) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56834 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 06:08:34 +00:00
Dan Gohman
5396c99baa Fix X86FastISel's output for x86-32 PIC constant pool addresses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56829 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 01:21:32 +00:00
Dan Gohman
57c3dac0df Move the GlobalBaseReg field out of X86ISelDAGToDAG.cpp 
and X86FastISel.cpp into X86MachineFunction.h, so that it
can be shared, instead of having each selector keep track
of its own.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56825 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 00:58:23 +00:00
Dan Gohman
9b66d73bb1 Disable all x87 usage, including f32 and f64 when the subtarget 
doesn't have SSE(2), with X86FastISel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56823 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 00:48:39 +00:00
Dale Johannesen
71d1bf55a2 Remove misuse of ReplaceNodeResults for atomics with 
valid types.  No functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56808 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 22:25:26 +00:00
Dan Gohman
a43abd102f Fix FastISel to not initialize the PIC-base register multiple times 
in functions with PIC references from more than one basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56807 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 21:55:50 +00:00
Dan Gohman
7962e856d1 Fix an over-pessimization about GlobalVariable addresses in X86FastISel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56802 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 21:13:15 +00:00
Devang Patel
652203f3f3 Support inreg, zext and sext as return value attributes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56801 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 20:49:50 +00:00
Devang Patel
66c6c65de2 Fix grammar. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56796 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 18:34:44 +00:00
Devang Patel
c580144f41 Fix grammer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56795 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 18:16:38 +00:00
Devang Patel
12602059a1 Fix sentence. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56794 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 18:16:09 +00:00
Evan Cheng
d47e0b664f Fix PR2835. Do not change the width of a volatile load. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56792 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 17:26:18 +00:00
Duncan Sands
6cccf03d02 Speed up these passes when the callgraph has 
huge simply connected components.  Suggested
by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56787 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 14:59:04 +00:00
Nuno Lopes
5ed3b894c9 remove redundant test (mayBeOverriden() includes hasLinkOnceLinkage) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56786 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 14:40:32 +00:00
Duncan Sands
224c86ee77 Tweak some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56784 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 13:35:31 +00:00
Matthijs Kooijman
6aa812704f Add some hands-on documentation about which files to create and edit when 
adding a backend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56783 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 11:52:22 +00:00
Duncan Sands
5df3186f59 Rename isWeakForLinker to mayBeOverridden. Use it 
instead of hasWeakLinkage in a bunch of optimization
passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56782 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 11:25:42 +00:00
Matthijs Kooijman
7ab5799f75 Add a testcase showing that scalarrepl supports first class structs. 
I originally made this script to show that scalarrepl didn't support them, but
it turned out it does. Better to still add the testcase then.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56781 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 10:42:13 +00:00
Dan Gohman
31bd42bc63 Move the code that handles DAGISel error conditions into 
helper functions instead of duplicating it inline each time
it is needed. This eliminates a few hundred or so copies
of this code in each target.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56759 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-27 23:53:14 +00:00
Daniel Dunbar
7a3ec1e148 Add IRBuilder::{CreateIsNull, CreateIsNonNull} helper methods. 
- I'm open to the idea that these could have better names. I think
   these read better than CreateEQNull and CreateNENull.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56757 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-27 23:22:55 +00:00
Evan Cheng
184793fc8a Re-apply 56683 with fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56748 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-27 01:56:22 +00:00
Devang Patel
8526390768 Update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56730 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-27 00:25:28 +00:00
Daniel Dunbar
02a4da2c22 Unbreak build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56727 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-27 00:22:09 +00:00