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6281 Commits

Author SHA1 Message Date
Dan Gohman
c9a5b9e38b Rename BuildSchedUnits to BuildSchedGraph, and refactor the 
code in ScheduleDAGSDNodes' BuildSchedGraph into separate functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61376 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-23 18:36:58 +00:00
Dan Gohman
237dee1259 Use isTerminator() instead of isBranch()||isReturn() in 
several places. isTerminator() returns true for a superset
of cases, and includes things like FP_REG_KILL, which are
nither return or branch but aren't safe to move/remat/etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61373 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-23 17:28:50 +00:00
Dan Gohman
e1dfc7da89 Avoid an unnecessary call to allnodes_size(), which is linear. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61372 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-23 17:24:50 +00:00
Dan Gohman
1578f8486d Minor code simplifications. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61371 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-23 17:22:32 +00:00
Dale Johannesen
58e39b0200 One more permutation of subtracting off a base value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61361 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-23 01:59:54 +00:00
Dan Gohman
00d448a341 Refactor a bunch of code out of AsmPrinter::EmitGlobalConstant into separate 
functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61345 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-22 21:14:27 +00:00
Dan Gohman
8044e9b3af Optimize setDepthDirty and setHeightDirty a little, as they showed 
up on a profile.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61344 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-22 21:11:33 +00:00
Dan Gohman
e19c6362d2 Use SmallVector's pop_back_val. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61277 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-20 16:42:33 +00:00
Dan Gohman
f89e6e6577 Use the correct Preds and Succs lists in setHeightDirty() 
and setDepthDirty(), respectively. This fixes PR3241.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61276 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-20 16:34:57 +00:00
Dan Gohman
6c3643c41b Use ~0u instead of -1u as the special value, to hopefully avoid 
warnings on compilers that warn about such things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61263 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 22:23:43 +00:00
Evan Cheng
5379f412bc Fix PR3149. If an early clobber def is a physical register and it is tied to an input operand, it effectively extends the live range of the physical register. Currently we do not have a good way to represent this. 
172     %ECX<def> = MOV32rr %reg1039<kill>
180     INLINEASM <es:subl $5,$1
        sbbl $3,$0>, 10, %EAX<def>, 14, %ECX<earlyclobber,def>, 9, %EAX<kill>,
36, <fi#0>, 1, %reg0, 0, 9, %ECX<kill>, 36, <fi#1>, 1, %reg0, 0
188     %EAX<def> = MOV32rr %EAX<kill>
196     %ECX<def> = MOV32rr %ECX<kill>
204     %ECX<def> = MOV32rr %ECX<kill>
212     %EAX<def> = MOV32rr %EAX<kill>
220     %EAX<def> = MOV32rr %EAX
228     %reg1039<def> = MOV32rr %ECX<kill>

The early clobber operand ties ECX input to the ECX def.

The live interval of ECX is represented as this:
%reg20,inf = [46,47:1)[174,230:0)  0@174-(230) 1@46-(47)

The right way to represent this is something like
%reg20,inf = [46,47:2)[174,182:1)[181:230:0)  0@174-(182) 1@181-230 @2@46-(47)

Of course that won't work since that means overlapping live ranges defined by two val#.

The workaround for now is to add a bit to val# which says the val# is redefined by a early clobber def somewhere. This prevents the move at 228 from being optimized away by SimpleRegisterCoalescing::AdjustCopiesBackFrom.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61259 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 20:58:01 +00:00
Chris Lattner
a33649e98c Fix some release-assert warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61244 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 17:03:38 +00:00
Rafael Espindola
2f6fea90a5 Fix bug 3202. 
The EH_frame and .eh symbols are now private, except for darwin9 and earlier.
The patch also fixes the definition of PrivateGlobalPrefix on pcc linux.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61242 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 10:55:56 +00:00
Bill Wendling
bebbded574 Perform this loop only when the -debug flag is specified. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61238 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 02:09:57 +00:00
Dan Gohman
1385758215 Initialize the ImplicitDefed member, to avoid getting stale 
data from a previous block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61237 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 00:46:20 +00:00
Dan Gohman
a5b2fee757 Teach LowerSubregs to preserve kill/dead information when lowering 
subreg instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61220 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:14:08 +00:00
Dan Gohman
98c206921a Make LowerSubregs' debug output for EXTRACT_SUBREG consistent with 
that of INSERT_SUBREG and SUBREG_TO_REG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61218 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:11:34 +00:00
Dan Gohman
f04865f234 Fix a copy+pasto in an assertion message. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61217 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:07:25 +00:00
Dan Gohman
07af765049 Fix indentation level. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61216 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:06:01 +00:00
Dan Gohman
2ccc839669 Print subreg information in MachineInstr::dump. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61213 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 21:51:27 +00:00
Mon P Wang
87c8a8f304 Added support for vector widening. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61209 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 20:03:17 +00:00
Dan Gohman
7224170f6a Give MachineLICM a name, for -time-passes etc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61184 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 01:37:56 +00:00
Dan Gohman
23b0d490cd Move post-RA scheduling before branch folding for now, because branch 
folding's tail merging doesn't currently preserve liveness information
which post-RA scheduling requires.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61183 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 01:36:42 +00:00
Owen Anderson
2ebf63f8e2 Re-apply r61158 in a form that no longer breaks tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61182 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 01:27:19 +00:00
Owen Anderson
c7a21941c5 Revert r61158 for now, as it caused some test failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61159 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-17 22:17:27 +00:00
Owen Anderson
25dffa743b Fix miscompilations caused by renumbering, and enable it as part of prealloc splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61158 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-17 22:06:59 +00:00
Mon P Wang
84aff84cfa Fix expansion of vsetcc to set the high bit for true instead of 1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61129 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-17 08:49:47 +00:00
Dan Gohman
89b64bd7e5 Double the amount of memory reserved for SUnits. This is a 
temporary workaround for an obscure bug. When node cloning is
used, it is possible that more SUnits will be created, and
if the SUnits std::vector has to reallocate, it will
invalidate all the graph edges.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61122 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-17 04:30:46 +00:00
Dan Gohman
fccf6dd377 Use getDepth() and getHeight() instead of accessing the 
Depth and Height members directly, as they may not be
current.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61121 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-17 04:25:52 +00:00
Eli Friedman
28dc98f752 Fix for PR3225: disable a broken optimization in 
DAGTypeLegalizer::ExpandShiftWithKnownAmountBit.

In terms of restoring the optimization, the best fix here isn't 
obvious... any ideas?



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61119 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-17 03:35:17 +00:00
Dale Johannesen
fd3b7b7df3 A new dag combine; several permutations of this 
are there under ADD, this one was missing.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61107 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 22:13:49 +00:00
Owen Anderson
d0b6a0d967 Add code to renumber split intervals into new vregs. This is disabled for now until I finish working out some iterator invalidation issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61104 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 21:35:08 +00:00
Dan Gohman
00dc84a2ca Eliminate the loop that walks the critical path. Instead, just track the 
position in the critical path during the main instruction walk.  This
eliminates the need for the CritialAntiDep DenseMap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61096 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 19:27:52 +00:00
Dan Gohman
905ff1ebc4 Preserve SourceValue information when lowering produces multiple loads from 
different offsets within the same stack slot.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61093 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 18:25:36 +00:00
Evan Cheng
09dc9c0c83 We have decided not to support inline asm where an output operand with a matching input operand with incompatible type (i.e. either one is a floating point and the other is an integer or the sizes of the types differ). SelectionDAGBuild will catch these and exit with an error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61092 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 18:21:39 +00:00
Dan Gohman
812d7506d0 Enable anti-dependence breaking by default when post-RA scheduling is enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61078 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 06:21:45 +00:00
Dan Gohman
fde221fa0a When breaking an anti-dependency, don't use a register which has seen 
one of its aliases defined. This is conservative, but tricky subreg
corner cases are outside the primary aim of this pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61077 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 06:20:58 +00:00
Dan Gohman
8749b61178 Add initial support for back-scheduling address computations, 
especially in the case of addresses computed from loop induction
variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61075 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:35:01 +00:00
Dan Gohman
9a65d6afc2 Remove some special-case logic in ScheduleDAGSDNodes's 
latency computation code that is no longer needed with the
new method for handling latencies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61074 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:31:11 +00:00
Dan Gohman
3f23744df4 Fix some register-alias-related bugs in the post-RA scheduler liveness 
computation code. Also, avoid adding output-depenency edges when both
defs are dead, which frequently happens with EFLAGS defs.

Compute Depth and Height lazily, and always in terms of edge latency
values. For the schedulers that don't care about latency, edge latencies
are set to 1.

Eliminate Cycle and CycleBound, and LatencyPriorityQueue's Latencies array.
These are all subsumed by the Depth and Height fields.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61073 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:25:46 +00:00
Dan Gohman
4ea8e85e19 Add a simple target-independent heuristic to allow targets with no 
instruction itinerary data to back-schedule loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61070 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 02:38:22 +00:00
Dan Gohman
c6b680eee5 Move addPred and removePred out-of-line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61067 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 01:05:52 +00:00
Dan Gohman
ffa391272b Make addPred and removePred return void, since the return value is not 
currently used by anything.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61066 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 01:00:55 +00:00
Dan Gohman
3ee7449f39 This getEdgeAttributes doesn't need a template argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61065 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:55:00 +00:00
Mon P Wang
93b3b928d7 Added support for splitting and scalarizing vector shifts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61050 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:44:00 +00:00
Dan Gohman
464fc5a044 Fix printing of PseudoSourceValues in SDNode graphs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61036 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 17:28:10 +00:00
Mon P Wang
d17c030276 Added support to LegalizeType for expanding the operands of scalar to vector 
and insert vector element.  Modified extract vector element to extend the
result to match the expected promoted type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61029 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 06:57:02 +00:00
Duncan Sands
b6862bbe34 Reapply r60997, this time without forgetting that 
target constants are allowed to have an illegal
type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61006 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-14 09:43:15 +00:00
Bill Wendling
2d8cc31521 Temporarily revert r60997. It was causing this failure: 
Running /Users/void/llvm/llvm.src/test/CodeGen/Generic/dg.exp ...
FAIL: /Users/void/llvm/llvm.src/test/CodeGen/Generic/asm-large-immediate.ll
Failed with exit(1) at line 1
while running:  llvm-as < /Users/void/llvm/llvm.src/test/CodeGen/Generic/asm-large-immediate.ll |  llc | /usr/bin/grep 68719476738
Assertion failed: ((TypesNeedLegalizing || getTypeAction(VT) == Legal) && "Illegal type introduced after type legalization?"), function HandleOp, file /Users/void/llvm/llvm.src/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp, line 493.
0   llc               0x0085392e char const* std::find<char const*, char>(char const*, char const*, char const&) + 98
1   llc               0x00853e63 llvm::sys::PrintStackTraceOnErrorSignal() + 593
2   libSystem.B.dylib 0x96cac09b _sigtramp + 43
3   libSystem.B.dylib 0xffffffff _sigtramp + 1765097359
4   libSystem.B.dylib 0x96d24ec2 raise + 26
5   libSystem.B.dylib 0x96d3447f abort + 73
6   libSystem.B.dylib 0x96d26063 __assert_rtn + 101
7   llc               0x004f9018 llvm::cast_retty<llvm::SubprogramDesc, llvm::DebugInfoDesc*>::ret_type llvm::cast<llvm::Sub
...




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61001 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-13 23:53:00 +00:00
Duncan Sands
0f546d4565 LegalizeDAG is not supposed to introduce illegal 
types into the DAG if they were not already there.
Check this with an assertion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60997 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-13 22:33:38 +00:00