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50751 Commits

Author SHA1 Message Date
Jim Grosbach
dac7815a91 ARM Allow 'q' registers in VLD/VST vector lists. 
Just treat it as if the constituent D registers where specified.

rdar://10348896

llvm-svn: 143167
 2011-10-28 00:06:50 +00:00
Dan Gohman
892b86e74c Remove the Alpha backend. 
llvm-svn: 143164
 2011-10-27 22:56:32 +00:00
Owen Anderson
d35df0aaeb Add some NEON stores to the VLD decoding hook that were accidentally omitted previously. 
llvm-svn: 143162
 2011-10-27 22:53:10 +00:00
Jakob Stoklund Olesen
de21509dcd Also set addrmode6 alignment when align==size. 
Previously, we were only setting the alignment bits on over-aligned
loads and stores.

llvm-svn: 143160
 2011-10-27 22:39:16 +00:00
Jim Grosbach
67d4fb4bc0 ARM isel for vld1, opcode selection for register stride post-index pseudos. 
llvm-svn: 143158
 2011-10-27 22:25:42 +00:00
Owen Anderson
6508cba44c If we're searching for a symbol reference to pretty-print a scattered relocation address, and we don't find a symbol table entry, try section begin addresses as well. 
llvm-svn: 143151
 2011-10-27 21:53:50 +00:00
Evan Cheng
75271d09f1 Avoid partial CPSR dependency from loop backedges. rdar://10357570 
llvm-svn: 143145
 2011-10-27 21:21:05 +00:00
Owen Anderson
9aaee13bf1 Fix pretty printing of i386 local sect diff relocations, TLV relocations, and x86_64 TLV relocations in MachO. 
llvm-svn: 143140
 2011-10-27 20:46:09 +00:00
Peter Collingbourne
24c42c8534 Add a pinned metadata name for fpaccuracy, and document it 
llvm-svn: 143135
 2011-10-27 19:19:14 +00:00
Duncan Sands
ca325638c8 Reapply commit 143028 with a fix: the problem was casting a ConstantExpr Mul 
using BinaryOperator (which only works for instructions) when it should have
been a cast to OverflowingBinaryOperator (which also works for constants).
While there, correct a few other dubious looking uses of BinaryOperator.
Thanks to Chad Rosier for the testcase.  Original commit message:
My super-optimizer noticed that we weren't folding this expression to
true: (x *nsw x) sgt 0, where x = (y | 1).  This occurs in 464.h264ref.

llvm-svn: 143125
 2011-10-27 19:16:21 +00:00
Kevin Enderby
837c1d56a2 Change the sysexit mnemonic (and sysexitl) to never have the REX.W prefix and 
not depend on In32BitMode.  Use the sysexitq mnemonic for the version with the
REX.W prefix and only allow it only In64BitMode.  rdar://9738584

llvm-svn: 143112
 2011-10-27 17:40:41 +00:00
Jim Grosbach
4f7964293a Thumb2 t2LDMDB[_UPD] assembly parsing to recognize .w suffix. 
rdar://10348844

llvm-svn: 143110
 2011-10-27 17:33:59 +00:00
Owen Anderson
997d323baa Expose relocation accessors through the libObject C API. 
llvm-svn: 143109
 2011-10-27 17:32:36 +00:00
Jim Grosbach
e1ec953149 Thumb2 t2MVNi assembly parsing to recognize ".w" suffix. 
rdar://10348584

llvm-svn: 143108
 2011-10-27 17:16:55 +00:00
Owen Anderson
ece66e91f2 Add relocation iterators to the libObject C API. 
llvm-svn: 143107
 2011-10-27 17:15:47 +00:00
Benjamin Kramer
ad2fb4eeb5 BlockFrequency: Use a smarter overflow check. 
This trades one 64 bit div for one 64 bit mul and some arithmetic.

llvm-svn: 143106
 2011-10-27 16:38:50 +00:00
Bob Wilson
2ca603d9b7 Revert Duncan's r143028 expression folding which appears to be the culprit 
behind a compile failure on 483.xalancbmk.

llvm-svn: 143102
 2011-10-27 15:47:25 +00:00
Benjamin Kramer
7e10fef545 LLLexer: Factor hex char parsing. 
llvm-svn: 143101
 2011-10-27 14:08:01 +00:00
Nick Lewycky
651475977d Teach our Dwarf emission to use the string pool. 
llvm-svn: 143097
 2011-10-27 06:44:11 +00:00
Eli Friedman
76e3969f05 Don't crash on 128-bit sdiv by constant. Found by inspection. 
llvm-svn: 143095
 2011-10-27 02:06:39 +00:00
Eli Friedman
e6918ac01a It is not safe to sink an alloca into a stacksave/stackrestore pair, so don't do that. <rdar://problem/10352360> 
llvm-svn: 143093
 2011-10-27 01:33:51 +00:00
Chad Rosier
e76ba1b654 A branch predicated on a constant can just FastEmit an unconditional branch. 
llvm-svn: 143086
 2011-10-27 00:21:16 +00:00
Lang Hames
e8bb71f80d Rename NonScalarIntSafe to something more appropriate. 
llvm-svn: 143080
 2011-10-26 23:50:43 +00:00
Chad Rosier
e3141f4f8b Add a TODO comment. FastISel works by parsing each basic block from the bottom 
up.  Thus, improving the support for compares is goodness because it increases
the number of terminator instructions we can handle.  This creates many more 
opportunities for target specific fast-isel.

llvm-svn: 143079
 2011-10-26 23:34:37 +00:00
Chad Rosier
75378507e3 Factor a little more code into EmitCmp, which should have been done in the first 
place.  No functional change intended.

llvm-svn: 143078
 2011-10-26 23:25:44 +00:00
Chad Rosier
52109646da Use EmitCmp in SelectBranch. No functional change intended. 
llvm-svn: 143076
 2011-10-26 23:17:28 +00:00
Nick Lewycky
4aa5a52a80 Reflow lines, fix comments for doxygen style, fix whitespace. No functionality 
change.

llvm-svn: 143074
 2011-10-26 22:55:33 +00:00
Chad Rosier
3f38cb48de Factor out an EmitCmp function that can be used by both SelectCmp and 
SelectBranch.  No functional change intended.

llvm-svn: 143072
 2011-10-26 22:47:55 +00:00
Jim Grosbach
c1cf1fe985 Trailing whitespace. 
llvm-svn: 143071
 2011-10-26 22:44:41 +00:00
Jim Grosbach
e3c6fa663f Thumb2 ldr pc-relative encoding fixes. 
We were parsing label references to the i12 encoding, which isn't right.
They need to go to the pci variant instead.

More of rdar://10348687

llvm-svn: 143068
 2011-10-26 22:22:01 +00:00
Rafael Espindola
1958dc7193 Fixes an issue reported by -verify-machineinstrs. 
Patch by Sanjoy Das.

llvm-svn: 143064
 2011-10-26 21:16:41 +00:00
Jim Grosbach
4597f361f6 ARM parse parenthesized expressions for label references. 
Partial fix for rdar://10348687.

llvm-svn: 143063
 2011-10-26 21:14:08 +00:00
Rafael Espindola
90896edc6c This commit introduces two fake instructions MORESTACK_RET and 
MORESTACK_RET_RESTORE_R10; which are lowered to a RET and a RET
followed by a MOV respectively.  Having a fake instruction prevents
the verifier from seeing a MachineBasicBlock end with a
non-terminator (MOV).  It also prevents the rather eccentric case of a
MachineBasicBlock ending with RET but having successors nevertheless.

Patch by Sanjoy Das.

llvm-svn: 143062
 2011-10-26 21:12:27 +00:00
Lang Hames
d87e366c7f Make sure short memsets on ARM lower to stores, even when optimizing for size. 
llvm-svn: 143055
 2011-10-26 20:56:52 +00:00
Duncan Sands
5c8fa99c32 The maximum power of 2 dividing a power of 2 is itself. This occurs 
in 403.gcc and was spotted by my super-optimizer.

llvm-svn: 143054
 2011-10-26 20:55:21 +00:00
Owen Anderson
11396b575d Add support for scattered relocations to the MachO relocatation pretty printer. 
llvm-svn: 143051
 2011-10-26 20:42:54 +00:00
Nick Lewycky
16ff59bfc8 On an ELF system, ".debug_str" is mergeable and contains null terminated strings 
composed of one byte characters.

llvm-svn: 143044
 2011-10-26 18:44:32 +00:00
Owen Anderson
8d9656dd53 The order of the two symbol listings in a Macho x86_64 subtractor relocation is reversed from what seems intuitive to me. 
llvm-svn: 143035
 2011-10-26 17:28:49 +00:00
Jim Grosbach
5a61a956cb Thumb2 remove redundant ".w" suffix from t2MVNCCi pattern. 
llvm-svn: 143034
 2011-10-26 17:28:15 +00:00
Owen Anderson
27580bf1eb Include the full 64 bits of relocation data in the type info for MachO relocations, so that we can recognize scattered relocations. 
llvm-svn: 143033
 2011-10-26 17:10:22 +00:00
Owen Anderson
7a9bb4d47f Expand relocation type field to 64 bits. MachO scattered relocations require 33 bits of type info. 
llvm-svn: 143032
 2011-10-26 17:08:49 +00:00
Owen Anderson
fc7467fd5e Improve pretty printing of GOT relocations in MachO on x86_64. 
llvm-svn: 143031
 2011-10-26 17:05:20 +00:00
Duncan Sands
c463f54342 My super-optimizer noticed that we weren't folding this expression to 
true: (x *nsw x) sgt 0, where x = (y | 1).  This occurs in 464.h264ref.

llvm-svn: 143028
 2011-10-26 15:31:51 +00:00
Duncan Sands
9cbeb0a825 Simplify SplitVecRes_UnaryOp by removing all the code that is 
trying to legalize the operand types when only the result type
is required to be legalized - the type legalization machinery
will get round to the operands later if they need legalizing.
There can be a point to legalizing operands in parallel with
the result: when this saves compile time or results in better
code.  There was only one case in which this was true: when
the operand is also split, so keep the logic for that bit.
As a result of this change, additional operand legalization
methods may need to be introduced to handle nodes where the
result and operand types can differ, like SIGN_EXTEND, but
the testsuite doesn't contain any tests where this is the case.
In any case, it seems better to require such methods (and die
with an assert if they doesn't exist) than to quietly produce
wrong code if we forgot to special case the node in
SplitVecRes_UnaryOp.

llvm-svn: 143026
 2011-10-26 14:11:18 +00:00
James Molloy
9afc8b08f7 Revert r142530 at least temporarily while a discussion is had on llvm-commits regarding exactly how much optsize should optimize for size over performance. 
llvm-svn: 143023
 2011-10-26 08:53:19 +00:00
Bill Wendling
b0dc0e18ca Use a worklist to prevent the iterator from becoming invalidated because of the 'removeSuccessor' call. Noticed in a Release+Asserts+Check buildbot. 
llvm-svn: 143018
 2011-10-26 07:16:18 +00:00
Eric Christopher
0042cece21 Remove unused variable. 
llvm-svn: 143011
 2011-10-26 03:47:16 +00:00
Jakob Stoklund Olesen
4512ad38b1 Don't use floating point to do an integer's job. 
This code makes different decisions when compiled into x87 instructions
because of different rounding behavior.  That caused phase 2/3
miscompares on 32-bit Linux when the phase 1 compiler was built with gcc
(using x87), and the phase 2 compiler was built with clang (using SSE).

This fixes PR11200.

llvm-svn: 143006
 2011-10-26 01:47:48 +00:00
Evan Cheng
c3031bd208 Disable LICM speculation in high register pressure situation again now that Devang has fixed other issues. 
llvm-svn: 143003
 2011-10-26 01:26:57 +00:00
Evan Cheng
941d5c148f Revert part of r142530. The patch potentially hurts performance especially 
on Darwin platforms where -Os means optimize for size without hurting
performance.

llvm-svn: 143002
 2011-10-26 01:17:44 +00:00