Commit Graph

33295 Commits

Author SHA1 Message Date
Dan Gohman 34341e69c4 Make -print-machineinstrs more readable.
- Be consistent when referring to MachineBasicBlocks: BB#0.
 - Be consistent when referring to virtual registers: %reg1024.
 - Be consistent when referring to unknown physical registers: %physreg10.
 - Be consistent when referring to known physical registers: %RAX
 - Be consistent when referring to register 0: %reg0
 - Be consistent when printing alignments: align=16
 - Print jump table contents.
 - Don't print host addresses, in general.
 - and various other cleanups.

llvm-svn: 85682
2009-10-31 20:19:03 +00:00
Dan Gohman 18dc1c5c9e Factor out more code into addCommonCodeGenPasses. The JIT wasn't
previously running CodePlacementOpt. Also print headers before
each dump in -print-machineinstrs mode, so that it's clear which
dump is which.

llvm-svn: 85681
2009-10-31 20:17:39 +00:00
Chris Lattner 3c89c53f35 adjust a couple xforms to work with null bb's in BlockAddress.
llvm-svn: 85680
2009-10-31 20:13:24 +00:00
Chris Lattner b2c0e243c5 Make blockaddress(@func, null) be valid, and make 'deleting a basic
block with a blockaddress still referring to it' replace the invalid 
blockaddress with a new blockaddress(@func, null) instead of a 
inttoptr(1).

This changes the bitcode encoding format, and still needs codegen 
support (this should produce a non-zero value, referring to the entry
block of the function would also be quite reasonable).

llvm-svn: 85678
2009-10-31 20:08:37 +00:00
Jim Grosbach 5d994048dd Expand 64 bit left shift inline rather than using the libcall. For now, this
is unconditional. Making it still use the libcall when optimizing for size
would be a good adjustment.

llvm-svn: 85675
2009-10-31 19:38:01 +00:00
Chris Lattner a742b8f94f add a comment.
llvm-svn: 85671
2009-10-31 17:48:31 +00:00
Dan Gohman 2d02ff8cbb Revert r85667. LoopUnroll currently can't call utility functions which
auto-update the DominatorTree because it doesn't keep the DominatorTree
current while it works.

llvm-svn: 85670
2009-10-31 17:33:01 +00:00
Dan Gohman 144694bcb7 Remove redundant code.
llvm-svn: 85668
2009-10-31 16:16:41 +00:00
Dan Gohman 041e2dbad1 Merge the enhancements from LoopUnroll's FoldBlockIntoPredecessor into
MergeBlockIntoPredecessor. This makes SimplifyCFG slightly more aggressive,
and makes it unnecessary for LoopUnroll to have its own copy of this code.

llvm-svn: 85667
2009-10-31 16:08:00 +00:00
Dan Gohman 880c92ac1c Rename forgetLoopBackedgeTakenCount to forgetLoop, because it
clears out more information than just the stored backedge taken count.

llvm-svn: 85664
2009-10-31 15:04:55 +00:00
Dan Gohman 969e83a4ff Replace LoopUnrollPass.cpp's custom code-size estimation code using
the new common CodeMetrics code.

llvm-svn: 85663
2009-10-31 14:54:17 +00:00
Dan Gohman fa8969f70e Simplify this code.
llvm-svn: 85662
2009-10-31 14:46:50 +00:00
Dan Gohman af94015c18 Remove an unnecessary #include.
llvm-svn: 85661
2009-10-31 14:39:43 +00:00
Dan Gohman f35b6640f6 Update CMakeLists for recent renames.
llvm-svn: 85660
2009-10-31 14:38:25 +00:00
Dan Gohman f70e76c435 Rename UnrollLoop.cpp to LoopUnroll.cpp, and LoopUnroll.cpp to
LoopUnrollPass.cpp, for consistency with other passes which are
similarly split.

llvm-svn: 85659
2009-10-31 14:37:31 +00:00
Dan Gohman fb7f0e57b6 Remove CodeGenLICM. It's largely obsoleted by MachineLICM's new ability
to unfold loop-invariant loads.

llvm-svn: 85657
2009-10-31 14:35:41 +00:00
Dan Gohman ac45c9171d Make ScalarEvolutionAliasAnalysis slightly more aggressive, by making an
underlying alias call even for non-identified-object values.

llvm-svn: 85656
2009-10-31 14:32:25 +00:00
Dan Gohman 930aa9d3d2 Reapply r85634, with the bug fixed.
llvm-svn: 85655
2009-10-31 14:22:52 +00:00
Dan Gohman ba8735d25a When discarding SrcValue information, discard all of it so that code
that uses this information knows to behave conservatively.

llvm-svn: 85654
2009-10-31 14:14:04 +00:00
Dan Gohman 97abba5b6f Fix 80-column violation.
llvm-svn: 85653
2009-10-31 14:12:53 +00:00
Eric Christopher a0ca9e944f Fix warning with gcc-4.0 and signed/unsigned.
llvm-svn: 85648
2009-10-31 09:24:35 +00:00
Evan Cheng cdbb70c065 It's safe to remat t2LDRpci; Add PseudoSourceValue to load / store's to enable more machine licm. More changes coming.
llvm-svn: 85643
2009-10-31 03:39:36 +00:00
Evan Cheng c16d8f2054 Revert 85634. It's breaking consumer-typeset (and others).
llvm-svn: 85641
2009-10-31 01:28:06 +00:00
Dan Gohman 060ee82dab Add assertion checks here to turn silent miscompiles into aborts.
llvm-svn: 85639
2009-10-30 23:59:06 +00:00
Dan Gohman d814e32e57 Don't mark registers dead here when processing nodes with MVT::Flag
results. This works around a problem affecting targets which rely on
MVT::Flag to handle physical register defs.

llvm-svn: 85638
2009-10-30 23:57:47 +00:00
Dan Gohman 7f7d97eb73 Add a comment about a missed opportunity.
llvm-svn: 85635
2009-10-30 23:15:43 +00:00
Dan Gohman 5bec30ca5d Optimize around the fact that pred_iterator is slow: instead of sorting
PHI operands by the predecessor order, sort them by the order used by the
first PHI in the block. This is still suffucient to expose duplicates.

llvm-svn: 85634
2009-10-30 23:15:21 +00:00
Kevin Enderby 8be42bd09f Updates to the ARM target assembler for llvm-mc per review comments from
Daniel Dunbar.
- Reordered the fields in the ARMOperand Mem struct to make the struct smaller.
Making bool's into 1 bit fields and put the MCExpr* fields adjacent to each
other.
- Fixed a number of places in ARMAsmParser.cpp so they have doxygen comments.
- Change the name of ARMAsmParser::ParseRegister() to MaybeParseRegister and
added the bool ParseWriteBack parameter.
- Changed ARMAsmParser::ParseMemory() to call MaybeParseRegister().
- Added ARMAsmParser::ParseMemoryOffsetReg to factor out parsing the offset of a
memory operand.  And use it for both parsing both preindexed and post indexing
addressing forms in ARMAsmParser::ParseMemory.
- Changed the first argument to ParseShift() to a reference.
- Changed ParseShift() to check for Rrx first and return to reduce nesting.

llvm-svn: 85632
2009-10-30 22:55:57 +00:00
Devang Patel 072b31a0bf If string field is empty then return NULL.
llvm-svn: 85630
2009-10-30 22:52:47 +00:00
Chris Lattner dd5d035302 if basic blocks are destroyed while there are *just* BlockAddress' hanging
around, then zap them.  This is analogous to dangling constantexprs hanging
off functions.

llvm-svn: 85627
2009-10-30 22:39:36 +00:00
Dan Gohman 1a95106602 Teach SimplifyCFG how to eliminate duplicate PHI nodes within a block.
This reduces codesize on a variety of codes by 1-2% on x86-64. It also
helps clean up after SSAUpdater.

llvm-svn: 85626
2009-10-30 22:39:04 +00:00
Chris Lattner 74eb5d71a3 make hasAddressTaken() constant time by storing a refcount in BB's subclass data.
llvm-svn: 85625
2009-10-30 22:33:29 +00:00
Bob Wilson c7415bf536 Add a note about Robert Muth's alternate jump table implementation.
llvm-svn: 85624
2009-10-30 22:22:46 +00:00
Dan Gohman 13e41edc71 Sort the incoming values in PHI nodes to match the predecessor order.
This helps expose duplicate PHIs, which will make it easier for them
to be eliminated.

llvm-svn: 85623
2009-10-30 22:22:22 +00:00
Dan Gohman 49fa51d936 Fix MachineLICM to use the correct virtual register class when
unfolding loads for hoisting.  getOpcodeAfterMemoryUnfold returns the
opcode of the original operation without the load, not the load
itself, MachineLICM needs to know the operand index in order to get
the correct register class. Extend getOpcodeAfterMemoryUnfold to
return this information.

llvm-svn: 85622
2009-10-30 22:18:41 +00:00
Chris Lattner 112caed500 it isn't valid to take the address of the entry block.
llvm-svn: 85621
2009-10-30 22:15:48 +00:00
Devang Patel 13cb281013 If a type is derived from a derived type then calculate size appropriately.
llvm-svn: 85619
2009-10-30 22:09:30 +00:00
Bob Wilson 6b00f4b7a8 Fix a comment.
llvm-svn: 85610
2009-10-30 20:13:25 +00:00
Evan Cheng 5a6b9c40d6 Add option to createGVNPass to disable PRE.
llvm-svn: 85609
2009-10-30 20:12:24 +00:00
Lang Hames 94966ca926 Stop the iterator in ValueLiveAt from potentially running off the end of the interval.
llvm-svn: 85599
2009-10-30 18:12:09 +00:00
Rafael Espindola ab7c709f43 This fixes functions like
void f (int a1, int a2, int a3, int a4, int a5,...)

In ARMTargetLowering::LowerFormalArguments if the function has 4 or
more regular arguments we used to set VarArgsFrameIndex using an
offset of 0, which is only correct if the function has exactly 4
regular arguments.

llvm-svn: 85590
2009-10-30 14:33:14 +00:00
Bob Wilson 1cf0b03064 Add ARM codegen for indirect branches.
clang/test/CodeGen/indirect-goto.c runs! (unoptimized)

llvm-svn: 85577
2009-10-30 05:45:42 +00:00
Dan Gohman b0cad70c24 Most stack straces don't need 3 digits worth of levels.
llvm-svn: 85575
2009-10-30 02:45:10 +00:00
Dan Gohman 64997909a6 Don't delete blocks which have their address taken.
llvm-svn: 85572
2009-10-30 02:13:27 +00:00
Dan Gohman e0a8b8fc56 Mention if a block has its address taken in debug output.
llvm-svn: 85571
2009-10-30 02:08:26 +00:00
Dan Gohman 43c574068b Simplify this code and avoid an extra space character in the output.
llvm-svn: 85568
2009-10-30 02:01:10 +00:00
Dan Gohman 4246f00e0c Add support for BlockAddress static initializers.
llvm-svn: 85562
2009-10-30 01:45:18 +00:00
Dan Gohman 2f8ccf2bf4 Add a FIXME comment.
llvm-svn: 85559
2009-10-30 01:38:20 +00:00
Dan Gohman c83dc4b506 Add some comments.
llvm-svn: 85558
2009-10-30 01:34:35 +00:00
Dan Gohman f7c4299312 Initial x86 support for BlockAddresses.
llvm-svn: 85557
2009-10-30 01:28:02 +00:00