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9700 Commits

Author SHA1 Message Date
Evan Cheng
9f622b5659 Re-defined valno is always valno even for partial re-def's. 
llvm-svn: 103410
 2010-05-10 17:33:49 +00:00
Bob Wilson
776d3dcfb4 Fix PR7096. When a block containing multiple defs is tail duplicated, the 
SSAUpdater for the value from the first def may see uses of undefined values,
because the later defs will not have been updated yet.

llvm-svn: 103407
 2010-05-10 17:14:26 +00:00
Duncan Sands
83c7bda62e Add an assertion to catch attempts to access off the end of the array. 
Based on a patch by Javier Martinez.

llvm-svn: 103391
 2010-05-10 04:54:28 +00:00
Devang Patel
eed188e776 Instead of just verifying compile unit, verify entire type, variable, namespace etc.. 
llvm-svn: 103327
 2010-05-07 23:33:41 +00:00
Devang Patel
14f07a8625 Remove DIGlobal. 
llvm-svn: 103325
 2010-05-07 23:19:07 +00:00
Dan Gohman
95040c18f4 SDDbgValues are apparently not being legalized. Fix a symptom of the problem, 
and not the real problem itself, by dropping debug info for i128 values.
rdar://7958162.

llvm-svn: 103310
 2010-05-07 22:19:08 +00:00
Devang Patel
3c2f4664fc Verify variable directly. 
llvm-svn: 103305
 2010-05-07 22:04:20 +00:00
Chris Lattner
e72e3e9c12 add COFF support for COMDAT sections, patch by Nathan Jeffords! 
llvm-svn: 103304
 2010-05-07 21:49:09 +00:00
Devang Patel
e7333c8318 Verify entire type descriptor not just tag. 
llvm-svn: 103303
 2010-05-07 21:45:47 +00:00
Dale Johannesen
1ee37ac5d4 Fix PR 7087, and probably other things, by extending 
getConstantFP to accept the two supported long double
target types.  This was not the original intent, but
there are other places that assume this works and it's
easy enough to do.

llvm-svn: 103299
 2010-05-07 21:35:53 +00:00
Devang Patel
0638b539bb Wrap const MDNode * inside DIDescriptor. 
llvm-svn: 103295
 2010-05-07 20:54:48 +00:00
Devang Patel
02bb578ffd Avoid DIDescriptor::getNode(). Use overloaded operators instead. 
llvm-svn: 103272
 2010-05-07 18:11:54 +00:00
Chris Lattner
c1d0e3a79e switch MCSectionCOFF from a syntactic to semantic representation, 
patch by Peter Housel!

llvm-svn: 103267
 2010-05-07 17:17:41 +00:00
Nick Lewycky
3e5720a898 Revert r103133 and add testcase from PR7066. 
llvm-svn: 103233
 2010-05-07 01:45:38 +00:00
Dan Gohman
4d75cfcc09 Transfer debug location information from PHI nodes to resulting 
lowered copies.

llvm-svn: 103228
 2010-05-07 01:10:20 +00:00
Dan Gohman
6650aa28f1 Print debug information for SDNodes. 
llvm-svn: 103227
 2010-05-07 01:09:21 +00:00
Dan Gohman
f863ad3dc5 Disable the new unknown-location code for now. It causes a major 
increase in the debug line info section, and it's causing
regressions in a gdb testsuite.

llvm-svn: 103226
 2010-05-07 01:08:53 +00:00
Dan Gohman
497e752655 Add a DebugLoc argument to TargetInstrInfo::copyRegToReg, so that it 
doesn't have to guess.

llvm-svn: 103194
 2010-05-06 20:33:48 +00:00
Evan Cheng
80f3051bb7 Add argument TargetRegisterInfo to loadRegFromStackSlot and storeRegToStackSlot. 
llvm-svn: 103193
 2010-05-06 19:06:44 +00:00
Evan Cheng
64f7afeec1 80 col violation. 
llvm-svn: 103185
 2010-05-06 16:33:12 +00:00
Evan Cheng
07a622c7b6 Fixes a coalescer bug that caused llc to crash on 2009-11-30-LiveVariablesBug.ll 
with the fix in 103157.

%reg1039:1<def> = VMOVS %S1<kill>, pred:14, pred:%reg0
is not coalescable since none of the super-registers of S1 are in reg1039's
register class: DPR_VFP2. But it is still a legal copy instruction so it should
not assert.

llvm-svn: 103170
 2010-05-06 06:23:31 +00:00
Dan Gohman
365b0e0f0f Update LabelsBeforeInsn also, when creating unknown-position labels. 
llvm-svn: 103145
 2010-05-06 00:29:41 +00:00
Chris Lattner
014a954e3d Fix PR7054 - Assertion `Symbol->isUndefined() && "Cannot define a symbol twice!"' failed. 
Users can write broken code that emits the same label twice with asm renaming,
detect this and emit a fatal backend error instead of aborting.

llvm-svn: 103140
 2010-05-06 00:05:37 +00:00
Dan Gohman
f7bc83b2ed In bottom-up mode, defer the materialization of local constant values. 
llvm-svn: 103139
 2010-05-06 00:02:14 +00:00
Dan Gohman
180422793f Add an "IsBottomUp" member function to FastISel, which will be used to 
support a new bottom-up mode.

llvm-svn: 103138
 2010-05-05 23:58:35 +00:00
Dan Gohman
2f1182c0ac Emit debug info for MachineInstrs with unknown debug locations, instead 
of just letting them inherit the debug locations of adjacent instructions.

Debug info should aim to be either accurate or absent.

llvm-svn: 103135
 2010-05-05 23:41:32 +00:00
Jakob Stoklund Olesen
2e5d12acfa Fix PR6520. An earlyclobber physreg must not be allocated to anything else. 
llvm-svn: 103133
 2010-05-05 23:07:41 +00:00
Devang Patel
041a8fa086 Use getValue() for PHINodes when direct NodeMap access does not work. 
llvm-svn: 103126
 2010-05-05 22:29:00 +00:00
Evan Cheng
d7bc27a079 Move REG_SEQUENCE removal to 2addr pass. 
llvm-svn: 103109
 2010-05-05 18:45:40 +00:00
Evan Cheng
25c07ac593 Teach liveintervalanalysis about virtual registers which are defined by reg_sequence instructions that are formed by registers defined by distinct instructions. e.g. 
80      %reg1041:6<def> = VSHRNv4i16 %reg1034<kill>, 12, pred:14, pred:%reg0
. . .
120     %reg1041:5<def> = VSHRNv4i16 %reg1039<kill>, 12, pred:14, pred:%reg0

llvm-svn: 103102
 2010-05-05 18:27:40 +00:00
Bob Wilson
e81252b747 Combine the implementations of the core part of the SSAUpdater and 
MachineSSAUpdater to avoid duplicating all the code.

llvm-svn: 103060
 2010-05-04 23:18:19 +00:00
Evan Cheng
9cd91d458a Teach PHI elimination to remove REG_SEQUENCE instructions and update references of the source operands with references of the destination with subreg indices. e.g. 
%reg1029<def>, %reg1030<def> = VLD1q16 %reg1024<kill>, ...
%reg1031<def> = REG_SEQUENCE %reg1029<kill>, 5, %reg1030<kill>, 6
=>
%reg1031:5<def>, %reg1031:6<def> = VLD1q16 %reg1024<kill>, ...

PHI elimination now does more than phi elimination. It is really a de-SSA pass.

llvm-svn: 103039
 2010-05-04 20:26:52 +00:00
Evan Cheng
9bdd9f4746 Rename variables for consistency. 
llvm-svn: 103013
 2010-05-04 17:12:26 +00:00
Devang Patel
ee7c7143dc Set DW_AT_APPLE_omit_frame_ptr in endFunction() where MachineFunction is available all the time. 
llvm-svn: 103001
 2010-05-04 06:15:30 +00:00
Evan Cheng
66ef3ff9c7 Instruction selection optimizations may have moved the def of a function argument out of the entry block. rdar://7937489 
llvm-svn: 102993
 2010-05-04 00:58:39 +00:00
Evan Cheng
f7b5c86a0b Teach scheduler about REG_SEQUENCE. 
llvm-svn: 102984
 2010-05-04 00:22:40 +00:00
Dan Gohman
50b08bfbc8 Re-enable isel kill flags, now that the local allocator is ignoring them. 
llvm-svn: 102981
 2010-05-04 00:12:15 +00:00
Jakob Stoklund Olesen
4ef97cf59c Remove preexisting kill flags in RegAllocLocal, just like LiveVariables does. 
This should make it possible to start producing kill flags in isel without
breaking stuff.

llvm-svn: 102976
 2010-05-03 23:49:20 +00:00
Dan Gohman
8bfd5f99b5 Factor out FastISel's code for materializing constants and other values 
in registers into a separate function to de-couple it from the
top-down-specific logic in getRegForValue.

llvm-svn: 102975
 2010-05-03 23:36:34 +00:00
Jakob Stoklund Olesen
51ab2653d5 Check that subregisters don't have independent values in RemoveCopyByCommutingDef(). 
This fixes PR6941.

llvm-svn: 102970
 2010-05-03 22:40:32 +00:00
Eric Christopher
cbbb35694f Reword a comment slightly. 
llvm-svn: 102966
 2010-05-03 22:18:49 +00:00
Bob Wilson
9c9622768e Print basic block numbers in live interval debug output. Since the rest of the 
debug output is showing machine instructions, the IR-level basic block names
aren't very meaningful, and because multiple machine basic blocks may be
derived from one IR-level BB, they're also not unique.

llvm-svn: 102960
 2010-05-03 21:38:11 +00:00
Dan Gohman
15cb983f55 Fix a bug which prevented tail merging of return instructions in 
beneficial cases. See the changes in test/CodeGen/X86/tail-opts.ll and
test/CodeGen/ARM/ifcvt2.ll for details.

The fix is to change HashEndOfMBB to hash at most one instruction,
instead of trying to apply heuristics about when it will be profitable to
consider more than one instruction. The regular tail-merging heuristics
are already prepared to handle the same cases, and they're more precise.

Also, make test/CodeGen/ARM/ifcvt5.ll and
test/CodeGen/Thumb2/thumb2-branch.ll slightly more complex so that they
continue to test what they're intended to test.

And, this eliminates the problem in
test/CodeGen/Thumb2/2009-10-15-ITBlockBranch.ll, the testcase from
PR5204. Update it accordingly.

llvm-svn: 102907
 2010-05-03 14:35:47 +00:00
Dale Johannesen
a8f83a5f1b Don't count debug info as instructions. This was 
preventing the emission of the NOP on Darwin for a
function with no actual code.  From timberwolfmc
with TEST=optllcdbg.

llvm-svn: 102843
 2010-05-01 16:41:11 +00:00
Anton Korobeynikov
a3726088fa Insert ANY_EXTEND node instead of invalid truncate during DAG Combining (X & 1), 
when needed. This fixes PR7001

llvm-svn: 102838
 2010-05-01 12:52:34 +00:00
Dan Gohman
ada97c52fe Remove the code for special-casing byval for fast-isel. SelectionDAG 
handles argument lowering anyway, so there's no need for special
casing here.

llvm-svn: 102828
 2010-05-01 02:44:23 +00:00
Dan Gohman
fb5d6a5d70 Re-disable kill flags, as there is more trouble. 
llvm-svn: 102826
 2010-05-01 01:57:56 +00:00
Dan Gohman
5fc96b81ec Re-enable kill flags from SelectionDAGISel, with a fix: don't 
try to put a kill flag on a DBG_INFO instruction.

llvm-svn: 102820
 2010-05-01 00:50:53 +00:00
Dale Johannesen
c0bf114984 Fix a bug where debug info affected stack slot coloring. 
Seen in SingleSrc/Benchmarks/Misc/flops with TEST=optllcdbg.
7929951.

llvm-svn: 102819
 2010-05-01 00:41:15 +00:00
Dan Gohman
1a6c7dfb3e Fix whitespace. 
llvm-svn: 102817
 2010-05-01 00:33:28 +00:00