Evan Cheng
99b653c36f
Propagate zest through logical shift.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91378 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15 00:41:36 +00:00
Bill Wendling
43cf6c3939
Revert these. They may have been causing 483_xalancbmk to fail:
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$ svn merge -c -91161 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91161 into '.':
U lib/CodeGen/BranchFolding.cpp
U lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91113 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91113 into '.':
G lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91101 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91101 into '.':
U include/llvm/CodeGen/MachineBasicBlock.h
G lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91092 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91092 into '.':
G include/llvm/CodeGen/MachineBasicBlock.h
G lib/CodeGen/MachineBasicBlock.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91376 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15 00:39:24 +00:00
Dan Gohman
2e141d744e
Fix integer cast code to handle vector types.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91362 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14 23:40:38 +00:00
Dan Gohman
688fb80334
Fix this to properly clear the FastISel debug location. Thanks to
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Bill for spotting this!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91355 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14 23:08:09 +00:00
Bill Wendling
f8084fb1e1
The CIE says that the LSDA point in the FDE section is an "sdata4". That's fine,
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but we need it to actually be 4-bytes in the FDE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91337 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14 21:49:44 +00:00
Devang Patel
ffe966c15b
Use DW_AT_specification to point to DIE describing function declaration.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91278 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14 16:18:45 +00:00
Lang Hames
94a4a5eec6
Added CalcSpillWeights to CMakeLists.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91275 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14 07:43:25 +00:00
Bill Wendling
85de1e5bad
Whitespace changes, comment clarification. No functional changes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91274 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14 06:51:19 +00:00
Lang Hames
a937f220e1
Moved spill weight calculation out of SimpleRegisterCoalescing and into its own pass: CalculateSpillWeights.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91273 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14 06:49:42 +00:00
Anton Korobeynikov
60283f9bc9
Fix weird typo which leads to unallocated memory access for nodes with 4 results.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91233 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-13 01:00:59 +00:00
Dan Gohman
a0474a83bf
Delete an unnecessary line. The VTSDNode on a SIGN_EXTEND_REG is never
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a vector type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91181 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 23:26:08 +00:00
Bill Wendling
c42a0b75a4
Don't try to move a MBB into the fall-through position if it's a landing pad or
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branches only to a landing pad. Without this check, the compiler would go into
an infinite loop because the branch to a landing pad is an "abnormal" edge which
wasn't being taken into account.
This is the meat of that fix:
if (!PrevBB.canFallThrough() && !MBB->BranchesToLandingPad(MBB)) {
The other stuff is simplification of the "branches to a landing pad" code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91161 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 21:47:36 +00:00
Devang Patel
d037d7a497
Construct CompileUnits lazily.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91159 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 21:37:07 +00:00
Dan Gohman
87862e77bb
Implement vector widening, splitting, and scalarizing for SIGN_EXTEND_INREG.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91158 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 21:31:27 +00:00
Dan Gohman
a4f9cc4e55
Fix the result type of SELECT nodes lowered from Select instructions with
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aggregate return values. This fixes PR5754.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91145 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 19:50:50 +00:00
Anton Korobeynikov
817a46454a
Honour setHasCalls() set from isel.
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This is used in some weird cases like general dynamic TLS model.
This fixes PR5723
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91144 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 19:39:55 +00:00
Bill Wendling
a288b2f43a
Revert part of r91101 which was causing an infinite loop in the self-hosting
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build bots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91113 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 10:43:41 +00:00
Evan Cheng
ac94863a1c
Coalesce insert_subreg undef, x first to avoid phase ordering issue.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91103 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 06:01:00 +00:00
Bill Wendling
64bdde2093
Address comments on last patch:
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- Loosen the restrictions when checking of it branches to a landing pad.
- Make the loop more efficient by checking the '.insert' return value.
- Do cheaper checks first.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91101 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 03:14:18 +00:00
Bill Wendling
4bde1ab82d
A machine basic block may end in an unconditional branch, however it may have
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more than one successor. Normally, these extra successors are dead. However,
some of them may branch to exception handling landing pads. If we remove those
successors, then the landing pads could go away if all predecessors to it are
removed. Before, it was checking if the direct successor was the landing
pad. But it could be the result of jumping through multiple basic blocks to get
to it. If we were to only check for the existence of an EH_LABEL in the basic
block and not remove successors if it's in there, then it could stop actually
dead basic blocks from being removed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91092 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11 01:49:14 +00:00
Devang Patel
edb4563cea
If VariableDIe is not created (may be because global was optimzed away) then do not try to use the variable die.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91077 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10 23:25:41 +00:00
Evan Cheng
6fd78ec8a2
It's not safe to coalesce a move where src and dst registers have different subregister indices. e.g.:
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%reg16404:1<def> = MOV8rr %reg16412:2<kill>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91061 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10 20:59:45 +00:00
Devang Patel
c366f83d89
Refactor code that finds context for a given die.
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Create global variable DIEs after creating subprogram DIEs. This allows function level static variable's to find their context at the time of DIE creation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91055 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10 19:14:49 +00:00
Devang Patel
16ced733f3
Refactor.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91051 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10 18:05:33 +00:00
Jakob Stoklund Olesen
cf97036675
Also attempt trivial coalescing for live intervals that end in a copy.
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The coalescer is supposed to clean these up, but when setting up parameters
for a function call, there may be copies to physregs. If the defining
instruction has been LICM'ed far away, the coalescer won't touch it.
The register allocation hint does not always work - when the register
allocator is backtracking, it clears the hints.
This patch is more conservative than r90502, and does not break
483.xalancbmk/i686. It still breaks the PowerPC bootstrap, so it is disabled
by default, and can be enabled with the -trivial-coalesce-ends option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91049 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10 17:48:32 +00:00
Devang Patel
8a24114b16
Reapply r90858, a cleanup patch.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90979 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09 18:24:21 +00:00
David Goodwin
990d285765
<rdar://problem/7453528>. Track only physical registers that are valid for the target.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90970 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09 17:18:22 +00:00
Lang Hames
6194569d22
Added a new "splitting" spiller.
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When a call is placed to spill an interval this spiller will first try to
break the interval up into its component values. Single value intervals and
intervals which have already been split (or are the result of previous splits)
are spilled by the default spiller.
Splitting intervals as described above may improve the performance of generated
code in some circumstances. This work is experimental however, and it still
miscompiles many benchmarks. It's not recommended for general use yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90951 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09 05:39:12 +00:00
Evan Cheng
7bd6478cd6
Teach InferPtrAlignment to infer GV+cst alignment and use it to simplify x86 isl lowering code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90925 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09 01:53:58 +00:00
Evan Cheng
64fa4a9584
Move isConsecutiveLoad to SelectionDAG. It's not target dependent and it's primary used by selectdag passes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90922 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09 01:36:00 +00:00
Evan Cheng
de2ace1758
Infer alignment for non-fixed stack object.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90919 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09 01:17:24 +00:00
Evan Cheng
7ced2e0b30
Add const qualifier.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90918 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09 01:10:37 +00:00
Evan Cheng
f2dc5c785d
Refactor InferAlignment out of DAGCombine.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90917 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09 01:04:59 +00:00
Devang Patel
0000fadb00
Revert 90858 90875 and 90805 for now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90898 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-08 23:21:45 +00:00
Devang Patel
a3a60c6c49
Cleanup.
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There is no need to supply ModuleCU to addType() as a parameter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90858 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-08 15:31:31 +00:00
Devang Patel
018b66038c
Do not try to push dead variable's debug info into namespace info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90857 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-08 15:01:35 +00:00
Evan Cheng
3a41ddb1b9
Watch out for duplicated PHI instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90816 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 23:11:03 +00:00
Evan Cheng
d8f079c25e
Follow up to 90488. Turn a check into an assertion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90815 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 23:10:34 +00:00
Devang Patel
4063f6bcc7
Add support to emit debug info for c++ style namespaces.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90805 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 21:41:32 +00:00
Evan Cheng
80564f761a
Delete code accidentally left behind.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90804 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 21:19:33 +00:00
Evan Cheng
75eb535843
Pre-regalloc tale duplication. Work in progress.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90759 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 10:15:19 +00:00
Evan Cheng
7e572eb37f
If BB is empty, insert PHI before end() instead of front().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90744 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 03:07:01 +00:00
Anton Korobeynikov
1c3436a67a
Truncate the arguments of llvm.frameaddress / llvm.returnaddress intrinsics from i32 to platform's largest native type
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90741 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 02:28:26 +00:00
Dan Gohman
87bad707ed
Remove old DBG_LABEL code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90669 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 17:56:26 +00:00
Dan Gohman
714efc63d4
Remove the unused DisableLegalizeTypes option and related code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90668 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 17:51:33 +00:00
Bill Wendling
dc492e0370
Temporarily revert r90502. It was causing the llvm-gcc bootstrap on PPC to fail.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90653 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 07:30:23 +00:00
Dan Gohman
b3b9821cde
Don't print a space before the : between the file name and line number.
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And separate the directory and file name with a '/'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90641 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 02:00:34 +00:00
Dan Gohman
eecb9919a4
Print newlines after printing labels for debug info, so that the output
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isn't cluttered with things like "Llabel47:Llabel48: movq (%rsi), %xmm3"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90638 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 01:42:34 +00:00
Dan Gohman
381ca5572e
Don't blindly set the debug location for PHI node copies.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90637 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 01:29:04 +00:00
Dan Gohman
6e3ff37547
Make TargetSelectInstruction protected and called from FastISel.cpp
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instead of SelectionDAGISel.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90636 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 01:27:58 +00:00
Dan Gohman
864e2efce2
Remove the target hook TargetInstrInfo::BlockHasNoFallThrough in favor of
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MachineBasicBlock::canFallThrough(), which is target-independent and more
thorough.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90634 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 00:44:40 +00:00
Dan Gohman
735985fbbe
Simplify this code: don't call AnalyzeBranch before doing simpler checks.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90633 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 00:32:59 +00:00
Dan Gohman
07f111e7b7
The debug information for an LLVM Instruction applies to that Instruction
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and that Instruction only. Implement this by setting the "current debug position"
back to Unknown after processing each instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90632 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 00:27:08 +00:00
Dan Gohman
3b9bc04eda
Fix this code to use DIScope instead of DICompileUnit, as in r90181.
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Don't print "SrcLine"; just print the filename and line number, which
is obvious enough and more informative.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90631 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 00:23:29 +00:00
Dan Gohman
4b808b014b
Don't print the debug directory; it's often long and uninteresting. Omit
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the column number if it is not known. Handle the case of a missing filename
better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90630 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 00:20:51 +00:00
Dan Gohman
fcafe44f56
Print a space between the comment character and the text.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90621 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 23:19:55 +00:00
Devang Patel
d55224c25e
In TAG_subrange_type, uppder bound is zero indexed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90617 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 23:10:24 +00:00
David Greene
f7ea2a534b
Use new interfaces to print spill size.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90611 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 22:46:04 +00:00
Evan Cheng
11572babb1
Handle recursive PHI's.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90575 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 19:09:10 +00:00
Evan Cheng
79fc6f44b6
Add a pre-regalloc tail duplication pass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90567 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 09:42:45 +00:00
Evan Cheng
9d0f8bba17
Don't try to be cute with undef optimization here. Let ProcessImplicitDefs handle it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90566 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 09:23:37 +00:00
Duncan Sands
36236b76a4
Add note about a subtle bug in this code. Does not effect the main
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architectures that LLVM targets, because they don't use this code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90564 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 08:42:17 +00:00
Jakob Stoklund Olesen
6b74e505be
Also attempt trivial coalescing for live intervals that end in a copy.
...
The coalescer is supposed to clean these up, but when setting up parameters
for a function call, there may be copies to physregs. If the defining
instruction has been LICM'ed far away, the coalescer won't touch it.
The register allocation hint does not always work - when the register
allocator is backtracking, it clears the hints.
This patch takes care of a few more cases that r90163 missed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90502 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 00:16:04 +00:00
Evan Cheng
2e65c29ac6
- If the reaching definition is an undef and the use is a PHI, add the implicit_def to the end of the source block.
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- When reaching value is replaced with another, update the cache as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90501 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 00:09:05 +00:00
Devang Patel
b3235d22e9
Insert composite type DIE into the map before processing type fields. This allows fields to find their context DIE from the map.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90498 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 23:46:57 +00:00
Evan Cheng
01306cad01
Handle undef values properly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90489 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 21:51:55 +00:00
Evan Cheng
9aed9396a6
Watch out for PHI instruction with no source operands.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90488 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 21:50:58 +00:00
Duncan Sands
9993b88f06
Fix ExpandShiftWithUnknownAmountBit, which was completely bogus.
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Pointed out by Javier Martinez (who also provided a patch). Since
this logic is not used on (for example) x86, I guess nobody noticed.
Tested by generating SHL, SRL, SRA on various choices of i64 for all
possible shift amounts, and comparing with gcc. Since I did this on
x86-32, I had to force the use of ExpandShiftWithUnknownAmountBit.
What I'm saying here is that I don't have a testcase I can add to the
repository.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90482 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 21:37:32 +00:00
Jakob Stoklund Olesen
f4811a9694
Clean up some loop logic.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90481 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 20:49:10 +00:00
Devang Patel
5d11eb0ed5
Add support to emit debug info for virtual functions and virtual base classes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90474 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 19:11:07 +00:00
Evan Cheng
111e7629cc
Teach tail duplication to update SSA form. Work in progress.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90432 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 08:43:53 +00:00
Nate Begeman
93e0ed31c5
Don't pull vector sext through both hands of a logical operation, since doing so prevents the fusion of vector sext and setcc into vsetcc.
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Add a testcase for the above transformation.
Fix a bogus use of APInt noticed while tracking this down.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90423 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 07:11:29 +00:00
Jakob Stoklund Olesen
9f0d4e631d
Don't call getValueType() on a null SDValue
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90415 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 05:15:35 +00:00
Evan Cheng
229694f0ee
Fill out codegen SSA updater. It's not yet tested.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90395 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 02:31:43 +00:00
Jakob Stoklund Olesen
15d75d9f11
Don't hang on to pointers or references after vector::push_back.
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The MO reference to a MachineOperand can be invalidated by
MachineInstr::addOperand. Don't even use it for debugging.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90381 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 01:49:56 +00:00
Devang Patel
1d5cc1db59
Emit method definition DIE at module level (even for methods with inlined functino body at soure level) so that the debugger can invoke it. This fixes many test failures in gdb test suite.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90375 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 01:25:38 +00:00
Chris Lattner
7896c9f436
improve portability to avoid conflicting with std::next in c++'0x.
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Patch by Howard Hinnant!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90365 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 00:50:42 +00:00
Douglas Gregor
e731fa2957
Fix CMake makefiles
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90354 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02 22:19:31 +00:00
Evan Cheng
651ea5376c
Skeleton for MachineInstr level SSA updater.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90353 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02 22:02:52 +00:00
Jim Grosbach
b51d3f9c8d
Add MaxStackAlignment.cpp to CMake
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90337 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02 19:31:07 +00:00
Jim Grosbach
e27d205d5d
Factor the stack alignment calculations out into a target independent pass.
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No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02 19:30:24 +00:00
Bob Wilson
f1e01dcc94
Don't count PHI instructions toward the limit for tail duplicating a block.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90326 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02 17:15:24 +00:00
Devang Patel
69f57b1f41
Clarify that DIEString does not keep a copy of the string.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90318 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02 15:25:16 +00:00
Devang Patel
7d0750a10f
Reuse existing subprogram DIE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90281 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 23:07:59 +00:00
Evan Cheng
9836a26da3
Fix PR5391: support early clobber physical register def tied with a use (ewwww)
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- A valno should be set HasRedefByEC if there is an early clobber def in the middle of its live ranges. It should not be set if the def of the valno is defined by an early clobber.
- If a physical register def is tied to an use and it's an early clobber, it just means the HasRedefByEC is set since it's still one continuous live range.
- Add a couple of missing checks for HasRedefByEC in the coalescer. In general, it should not coalesce a vr with a physical register if the physical register has a early clobber def somewhere. This is overly conservative but that's the price for using such a nasty inline asm "feature".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90269 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 22:25:00 +00:00
Dan Gohman
5b69fe767c
Add edge source labels to SelectionDAG graphs, now that the graph printing
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framework omits differentiated edge sources in the case where the labels
are empty strings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90254 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 19:20:00 +00:00
Dan Gohman
0baf2a302f
Minor cleanups.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90253 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 19:16:15 +00:00
Dan Gohman
241c595786
Trim an unnecessary #include.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90252 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 19:13:27 +00:00
Devang Patel
c09ddc1c79
Clear function specific containers while processing end of a function, even if DW_TAG_subprogram for current function is not found.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90247 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 18:13:48 +00:00
Jakob Stoklund Olesen
8f72235a77
Move PHIElimination::isLiveOut method to LiveVariables.
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We want LiveVariables clients to use methods rather than accessing the
getVarInfo data structure directly. That way it will be possible to change the
LiveVariables representation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90240 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 17:13:31 +00:00
Jakob Stoklund Olesen
579d6d9fe3
Use CFG connectedness as a secondary sort key when deciding the order of copy coalescing.
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This means that well connected blocks are copy coalesced before the less connected blocks. Connected blocks are more difficult to
coalesce because intervals are more complicated, so handling them first gives a greater chance of success.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90194 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 03:03:00 +00:00
Dan Gohman
261a7d983d
Devang pointed out that this code should use DIScope instead of
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DICompileUnit. This code now prints debug filenames successfully.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90181 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 00:45:56 +00:00
Evan Cheng
a4025df42d
Fix PR5614: parts of a physical register def may be killed the rest.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90180 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01 00:44:45 +00:00
Devang Patel
deea564e53
If pointer type has a name then do not ignore the name.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90172 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-30 23:56:56 +00:00
Jakob Stoklund Olesen
ce7a663140
New virtual registers created for spill intervals should inherit allocation hints from the original register.
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This helps us avoid silly copies when rematting values that are copied to a physical register:
leaq _.str44(%rip), %rcx
movq %rcx, %rsi
call _strcmp
becomes:
leaq _.str44(%rip), %rsi
call _strcmp
The coalescer will not touch the movq because that would tie down the physical register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90163 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-30 22:55:54 +00:00
Bob Wilson
3858225afc
Reprioritize tests for tail duplication to be aggressive about indirect
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branches even when optimizing for code size. Unless we find evidence to the
contrary in the future, the special treatment for indirect branches does not
have a significant effect on code size, and performance still matters with -Os.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90147 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-30 18:56:45 +00:00
Bob Wilson
15217e63bc
Remove isProfitableToDuplicateIndirectBranch target hook. It is profitable
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for all the processors where I have tried it, and even when it might not help
performance, the cost is quite low. The opportunities for duplicating
indirect branches are limited by other factors so code size does not change
much due to tail duplicating indirect branches aggressively.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90144 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-30 18:35:03 +00:00
Tobias Grosser
ab01069fcd
Fix last DOTGraphTraits problems in CompilationGraph.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90136 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-30 13:34:51 +00:00
Tobias Grosser
56f4ef3232
Remove ShortNames from getNodeLabel in DOTGraphTraits
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90134 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-30 12:38:47 +00:00
Tobias Grosser
a10d598602
Instantiate DefaultDOTGraphTraits
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90133 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-30 12:38:13 +00:00
Mon P Wang
cd6e725f21
Added support to allow clients to custom widen. For X86, custom widen vectors for
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divide/remainder since these operations can trap by unroll them and adding undefs
for the resulting vector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90108 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-30 02:42:02 +00:00
Bob Wilson
2d521e51ac
Rename new TailDuplicationPass to avoid name conflict with the old one.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89968 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-26 21:38:41 +00:00
Evan Cheng
40ea0e22b2
When all defs of a vr are implicit_def, delete all of the defs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89905 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-26 00:32:36 +00:00
Bob Wilson
15acadde5f
Split tail duplication into a separate pass. This is needed to avoid
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running tail duplication when doing branch folding for if-conversion, and
we also want to be able to run tail duplication earlier to fix some
reg alloc problems. Move the CanFallThrough function from BranchFolding
to MachineBasicBlock so that it can be shared by TailDuplication.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89904 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-26 00:32:21 +00:00
Evan Cheng
e7c9195706
ProcessImplicitDefs should watch out for invalidated iterator and extra implicit operands on copies.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89880 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-25 21:13:39 +00:00
Benjamin Kramer
1c3451fc99
Avoid some possibly unsafe uses of StringRef::data().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89873 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-25 18:26:09 +00:00
Devang Patel
65dbc909f5
Use StringRef (again) in DebugInfo interface.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89866 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-25 17:36:49 +00:00
Bob Wilson
f8c4cfb7cc
Refactor target hook for tail duplication as requested by Chris.
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Make tail duplication of indirect branches much more aggressive (for targets
that indicate that it is profitable), based on further experience with
this transformation. I compiled 3 large applications with and without
this more aggressive tail duplication and measured minimal changes in code
size. ("size" on Darwin seems to round the text size up to the nearest
page boundary, so I can only say that any code size increase was less than
one 4k page.) Radar 7421267.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89814 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-24 23:35:49 +00:00
Devang Patel
e9a059714e
Use StringRef instead of std::string in DIEString.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89793 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-24 19:42:17 +00:00
Devang Patel
f5a7a2c84a
Remove DebugLabelFolder pass. It is not used by dwarf writer anymore.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89790 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-24 19:37:07 +00:00
Devang Patel
f3a0376a56
Swith to pubtypes section before emitting pub types.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89787 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-24 19:18:41 +00:00
Devang Patel
193f720f11
Emit pubtypes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89725 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-24 01:14:22 +00:00
David Goodwin
2601329106
<rdar://problem/6721894>. Allow multiple registers to be renamed together (super and sub) if necessary to break an anti-dependence.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89722 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-24 00:59:08 +00:00
Dan Gohman
735afe14ee
Remove ISD::DEBUG_LOC and ISD::DBG_LABEL, which are no longer used.
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Note that "hasDotLocAndDotFile"-style debug info was already broken;
people wanting this functionality should implement it in the
AsmPrinter/DwarfWriter code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89711 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 23:20:51 +00:00
Dan Gohman
277207e6cb
Simplify this code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89702 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 21:30:55 +00:00
Dan Gohman
75ae593a27
Print the debug info line and column in MachineInstr::print even when there's
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no filename. This situation is apparently fairly common right now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89701 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 21:29:08 +00:00
Devang Patel
05f6fa874e
Revert r89487.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89686 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 18:43:37 +00:00
Dan Gohman
5fca8b1c8d
Move CopyCatchInfo into FunctionLoweringInfo.cpp too, for consistency.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89683 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 18:12:11 +00:00
Dan Gohman
2048b85c7c
Rename SelectionDAGLowering to SelectionDAGBuilder, and rename
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SelectionDAGBuild.cpp to SelectionDAGBuilder.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89681 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 18:04:58 +00:00
Dan Gohman
f9bd450a10
Move RegsForValue to an anonymous namespace, since it is only used
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in this file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89675 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 17:46:23 +00:00
Dan Gohman
66336edf82
Move some more code out of SelectionDAGBuild.cpp and into
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FunctionLoweringInfo.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89674 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 17:42:46 +00:00
Ted Kremenek
9977ed0290
Update CMake file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89671 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 17:26:04 +00:00
Dan Gohman
6277eb2bb9
Move the FunctionLoweringInfo class and some related utility functions out
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of SelectionDAGBuild.h/cpp into its own files, to help separate
general lowering logic from SelectionDAG-specific lowering logic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89667 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 17:16:22 +00:00
Nick Lewycky
ce2c51b670
Pull LLVMContext out of PromoteMemToReg.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89645 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 03:50:44 +00:00
Jim Grosbach
a2f20b20a8
Add getFrameIndexReference() to TargetRegisterInfo, which allows targets to
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tell debug info which base register to use to reference a frame index on a
per-index basis. This is useful, for example, in the presence of dynamic
stack realignment when local variables are indexed via the stack pointer and
stack-based arguments via the frame pointer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89620 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-22 20:14:00 +00:00
Jim Grosbach
7ab38dfccb
80-column cleanup
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89612 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-22 19:20:36 +00:00
Jakob Stoklund Olesen
e0239930eb
Teach MachineBasicBlock::updateTerminator() to handle a failing TII->ReverseBranchCondition(Cond) call.
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This fixes the MallocBench/cfrac test case regression.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89608 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-22 18:28:04 +00:00
Jim Grosbach
31ef40e940
remove trailing whitespace
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89567 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21 23:12:12 +00:00
Evan Cheng
e54cb16308
Allow target to disable if-converting predicable instructions. e.g. NEON instructions under ARM mode.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89541 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21 06:20:26 +00:00
Devang Patel
2c4ceb177b
Cosmetic changes, which were long overdue, in DwarfDebug.cpp.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21 02:48:08 +00:00
Devang Patel
bef8888a91
We are not using DBG_STOPPOINT anymore.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89536 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21 02:46:55 +00:00
Jakob Stoklund Olesen
323d8c3ed7
Be more clever about calculating live variables through new basic blocks.
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When splitting a critical edge, the registers live through the edge are:
- Used in a PHI instruction, or
- Live out from the predecessor, and
- Live in to the successor.
This allows the coalescer to eliminate even more phi joins.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89530 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21 02:05:21 +00:00
Devang Patel
9bff5cbae8
Remove dead code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89522 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21 00:54:03 +00:00
Dale Johannesen
5b8bce11d6
When generating a vector the really slow way, via loads
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and stores, handle the case where the element size is not
a valid target type correctly (PPC).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89521 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21 00:53:23 +00:00
Devang Patel
6f01d9c2f0
There is no need to use FoldingSet to unique DIEs.
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DIEs are created from MDNode, which are already uniqued. And DwarfDebug already uses ValueMaps to find and use existing DIE for a given MDNode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89518 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21 00:31:03 +00:00
David Goodwin
00621efb40
Restructure code to allow renaming of multiple-register groups for anti-dep breaking.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89511 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 23:33:54 +00:00
Evan Cheng
c26abd9487
Enable hoisting load from constant memories.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89510 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 23:31:34 +00:00
Dan Gohman
29cbade25a
Target-independent support for TargetFlags on BlockAddress operands,
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and support for blockaddresses in x86-32 PIC mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89506 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 23:18:13 +00:00
Devang Patel
017d121c59
Do not hold on to a map slot while new entries may be inserted into the map.
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Use ValueMap, instead of std::map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89490 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 21:37:22 +00:00
David Greene
a96fc2f3ad
Cleanups.
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Make things a little more efficient as suggested by Evan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89489 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 21:13:27 +00:00
Devang Patel
1f37b5b3af
There is no need to emit source location info for DW_TAG_pointer_type.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89487 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 21:05:37 +00:00
Evan Cheng
87b75ba75e
Add option -licm-const-load to hoist all loads from constant memory.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89477 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 19:55:37 +00:00
David Goodwin
557bbe6b5d
Remove some old experimental code that is no longer needed. Remove additional, speculative scheduling pass as its cost did not translate into significant performance improvement. Minor tweaks.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89471 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 19:32:48 +00:00
Jakob Stoklund Olesen
6cd8103bea
More consistent labelling of basic blocks in debug output
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89470 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 18:54:59 +00:00
Duncan Sands
c088ae8b84
Fix PR5558, which was caused by a wrong fix for PR3393 (see commit 63048),
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which was an expensive checks failure due to a bug in the checking. This
patch in essence reverts the original fix for PR3393, and refixes it by a
tweak to the way expensive checking is done.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89454 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 10:45:10 +00:00
Dan Gohman
b4afb137ef
Fix fast-isel to avoid selecting the return instruction if a
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tail call has been encountered.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89444 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 02:51:26 +00:00
Dan Gohman
2e7e94826a
Add an experimental option to run gep-splitting and no-load GVN
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just before codegen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89439 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 02:03:44 +00:00
Jakob Stoklund Olesen
324da7647c
Add MachineBasicBlock::getName, and use it in place of getBasicBlock()->getName.
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Fix debug code that assumes getBasicBlock never returns NULL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89428 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 01:17:03 +00:00
Lang Hames
8783e401a3
Removed references to LiveStacks from Spiller.* . They're no longer needed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89422 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20 00:53:30 +00:00
David Goodwin
3e72d301e0
Fix a couple of problems with maintaining liveness information for antidep breaking.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89404 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 23:12:37 +00:00
Jakob Stoklund Olesen
160069d15a
Place new basic blocks immediately after their predecessor when splitting
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critical edges in PHIElimination.
This has a huge impact on regalloc performance, and we recover almost all of
the 10% compile time regression that edge splitting introduced.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89381 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 19:42:16 +00:00
Bill Wendling
fb7634f1c7
Reverting the EH table patches.
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$ svn merge -c -89279 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r89279 into '.':
U lib/CodeGen/AsmPrinter/DwarfException.cpp
U lib/Target/TargetLoweringObjectFile.cpp
$ svn merge -c -89270 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r89270 into '.':
G lib/CodeGen/AsmPrinter/DwarfException.cpp
G lib/Target/TargetLoweringObjectFile.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89379 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 19:21:09 +00:00
David Greene
feb5bfbc6b
Fix a small bug.
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Fix one case we missed to make sure we reserve registers from
allocation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89376 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 19:09:39 +00:00
David Greene
7cfd336af6
Add support for spreading register allocation.
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Add a -linearscan-skip-count argument (default to 0) that tells the
allocator to remember the last N registers it allocated and skip them
when looking for a register candidate. This tends to spread out
register usage and free up post-allocation scheduling at the cost of
slightly more register pressure. The primary benefit is the ability
to backschedule reloads.
This is turned off by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89356 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 15:55:49 +00:00
Lang Hames
835ca07991
Added a new Spiller implementation which wraps LiveIntervals::addIntervalsForSpills.
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All spiller calls in RegAllocLinearScan now go through the new Spiller interface.
The "-new-spill-framework" command line option has been removed. To use the trivial in-place spiller you should now pass "-spiller=trivial -rewriter=trivial".
(Note the trivial spiller/rewriter are only meant to serve as examples of the new in-place modification work. Enabling them will yield terrible, though hopefully functional, code).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89311 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 04:15:33 +00:00
Bill Wendling
01c69374b5
The "ReadOnlyWithRel" enum seems to apply more to what Darwin does with the EH
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exception table than DataRel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89279 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 00:09:14 +00:00
Bob Wilson
fbb6b67df0
There should be no need to keep renumbering blocks during tail duplication.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89275 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 23:48:57 +00:00
Bill Wendling
ec04458551
Attempt #2 :
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Place the EH table in the __TEXT section on MachO. It saves space.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89270 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 23:18:46 +00:00
Bob Wilson
60f34b9fb0
Tail duplication still needs to iterate. Duplicating new instructions onto
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the tail of a block may make that block a new candidate for duplication.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89264 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 22:52:37 +00:00
Bob Wilson
79d621035e
Add another statistic to measure code size due to tail duplication.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89254 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 22:12:31 +00:00
Jakob Stoklund Olesen
0b25ae1afb
Fix PR5300.
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When TwoAddressInstructionPass deletes a dead instruction, make sure that all
register kills are accounted for. The 2-addr register does not get special
treatment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89246 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 21:33:35 +00:00
Jakob Stoklund Olesen
8f16e02fc9
Allow the machine verifier to be run outside the PassManager.
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Verify LiveVariables information when present.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89241 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 20:36:57 +00:00
Jakob Stoklund Olesen
1e78aa445c
Remove the -early-coalescing option
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89240 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 20:36:47 +00:00
Lang Hames
38283e23df
Fixed the in-place spiller and trivial rewriter, which had been broken by the recent SlotIndexes work.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89238 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 20:31:20 +00:00
Bob Wilson
7cd5d3e05c
Add statistics for tail duplication.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89225 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 19:29:37 +00:00
Jakob Stoklund Olesen
0257dd375d
Don't require LiveVariables for PHIElimination. Enable critical edge splitting
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when LiveVariables is available.
The -split-phi-edges is now gone, and so is the hack to disable it when using
the local register allocator. The PHIElimination pass no longer has
LiveVariables as a prerequisite - that is what broke the local allocator.
Instead we do critical edge splitting when possible - that is when
LiveVariables is available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89213 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 18:01:35 +00:00
Bob Wilson
834b08af8d
Add a target hook to allow changing the tail duplication limit based on the
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contents of the block to be duplicated. Use this for ARM Cortex A8/9 to
be more aggressive tail duplicating indirect branches, since it makes it
much more likely that they will be predicted in the branch target buffer.
Testcase coming soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89187 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 03:34:27 +00:00
Jakob Stoklund Olesen
5052c1547e
Fix inverted test and add testcase from failing self-host.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89167 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 00:02:18 +00:00
Jakob Stoklund Olesen
202344e124
Disable -split-phi-edges to unbreak the buildbots
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89142 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 21:23:49 +00:00
Jakob Stoklund Olesen
5493acac6f
Never call UpdateTerminator() when AnalyzeBranch would fail.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89139 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 20:46:00 +00:00
Evan Cheng
2a085c3493
Add a WriteAsOperand for MachineBasicBlock so MachineLoopInfo dump looks sane.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89130 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 19:19:59 +00:00
Evan Cheng
7adcdc313f
Fix comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89129 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 19:19:01 +00:00
Jakob Stoklund Olesen
95a2c8f1d0
Enable -split-phi-edges by default, except when -regalloc=local.
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The local register allocator doesn't like it when LiveVariables is run.
We should also disable edge splitting under -O0, but that has to wait a bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89125 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 19:15:50 +00:00
Bob Wilson
aa60ddac39
Remove a special case for tail merging that seems to be both broken and
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unnecessary. It is broken because the "isIdenticalTo" check should be
negated. If that is fixed, this code causes the CodeGen/X86/tail-opts.ll
test to fail, in the dont_merge_oddly function. And, I confirmed that the
regression is real -- the generated code is worse. As far as I can tell,
that tail-opts.ll test is checking for what this code is supposed to handle
and we're doing the right thing anyway.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89121 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 18:30:09 +00:00
Dan Gohman
37d60fd142
Set MadeChange instead of MadeChangeThisIteration.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89114 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 18:04:15 +00:00
Bob Wilson
465c8252f2
Update a comment, now that tail duplication happens after other branch
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folding optimizations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89109 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 17:40:31 +00:00
Bob Wilson
56ea69c3a2
Perform tail duplication only once, after tail merging is complete.
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It was too difficult to keep the heuristics for merging and duplication
consistent.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89105 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 17:06:18 +00:00
Evan Cheng
9e97f3c2e2
Revert 89021. It's miscompiling llvm-gcc driver driver at -O0.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89082 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 09:55:52 +00:00
Nick Lewycky
381afae68f
Remove VISIBILITY_HIDDEN from the classes in this directory. Fixes bug 5507.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89075 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 09:17:08 +00:00
Nick Lewycky
5f9843f68f
Revert r88939.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89066 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 08:11:44 +00:00
Bill Wendling
7378b1bd00
Refactor the code that creates the "dot-label" difference. This may be used in
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more than one place. No intended functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89024 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 01:23:53 +00:00
Jakob Stoklund Olesen
2cbe71cdf0
Enable -split-phi-edges by default
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89021 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 01:07:22 +00:00
Dan Gohman
e0f06c78d3
Remove the optimizations that convert BRCOND and BR_CC into
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unconditional branches or fallthroghes. Instcombine/SimplifyCFG
should be simplifying branches with known conditions.
This fixes some problems caused by these transformations not
updating the MachineBasicBlock CFG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89017 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 00:47:23 +00:00
Dan Gohman
834651c945
Initialize the new AsmPrinterFlags field to 0, fixing uses of
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uninitialized memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88985 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 22:49:38 +00:00
Devang Patel
f76a3d634f
Revert r88939.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88973 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 21:53:40 +00:00
Dan Gohman
6ac0e76ff4
Sink a #include <map> to where it's actually needed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88956 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 20:40:47 +00:00
Dan Gohman
552c0dff34
Fix a typo in a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88953 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 20:35:59 +00:00
Bob Wilson
4a504c6ff8
Fix a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88940 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 19:33:27 +00:00
Devang Patel
270a97430d
Add VISIBILITY_HIDDEN marker.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88939 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 19:20:48 +00:00
Bob Wilson
c4a0c843e4
Fix some comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88932 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 18:54:08 +00:00
Bob Wilson
d34f5d91bc
Whitespace: be consistent with pointer syntax.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88929 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 18:08:46 +00:00
Bob Wilson
3cbc312087
Clean up whitespace.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88927 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 17:56:13 +00:00
David Greene
ddff941357
Support spill comments.
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Have the asm printer emit a comment if an instruction is a spill or
reload and have the spiller mark copies it introdues so the asm printer
can also annotate those.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88911 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 15:12:23 +00:00
Evan Cheng
39aa7251a2
Check if subreg index is zero.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88899 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 06:31:49 +00:00
Evan Cheng
285a7d57dc
For some targets, a copy can use a register multiple times, e.g. ppc.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88895 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 05:52:06 +00:00
Lang Hames
79ac32de3b
Fixes the bug exposed by Anton's test case in PR 5495:
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Make sure when ProcessImplicitDefs removes a copy which kills its source reg that it
removes the copy from said reg's Kills list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88881 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 02:07:31 +00:00
Lang Hames
b126d0530d
Fix for the original bug in PR5495 - Look at uses as well as defs when determining the PHI-copy insert point.
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- Patch by Andrew Canis!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88880 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 02:00:09 +00:00
Lang Hames
e98b4b0695
Added an assert to the PBQP allocator to catch infinite cost solutions which might otherwise lead to miscompilations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88829 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-15 04:39:51 +00:00
Jim Grosbach
c04cae9c9b
Do not merge jump tables this early. Branch folding will do any necessary
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merges, and until then, it's useful to keep the tables separate for ease
of manipulation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88806 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-14 20:15:03 +00:00
Jim Grosbach
68bb60f6a4
Add function to replace a destination MBB in a single jump table
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88804 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-14 20:09:13 +00:00