24929 Commits

Author SHA1 Message Date
Bob Wilson
6586e9b203 --- Reverse-merging r107947 into '.':
U    utils/TableGen/FastISelEmitter.cpp
--- Reverse-merging r107943 into '.':
U    test/CodeGen/X86/fast-isel.ll
U    test/CodeGen/X86/fast-isel-loads.ll
U    include/llvm/Target/TargetLowering.h
U    include/llvm/Support/PassNameParser.h
U    include/llvm/CodeGen/FunctionLoweringInfo.h
U    include/llvm/CodeGen/CallingConvLower.h
U    include/llvm/CodeGen/FastISel.h
U    include/llvm/CodeGen/SelectionDAGISel.h
U    lib/CodeGen/LLVMTargetMachine.cpp
U    lib/CodeGen/CallingConvLower.cpp
U    lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
U    lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
U    lib/CodeGen/SelectionDAG/FastISel.cpp
U    lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
U    lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
U    lib/CodeGen/SelectionDAG/InstrEmitter.cpp
U    lib/CodeGen/SelectionDAG/TargetLowering.cpp
U    lib/Target/XCore/XCoreISelLowering.cpp
U    lib/Target/XCore/XCoreISelLowering.h
U    lib/Target/X86/X86ISelLowering.cpp
U    lib/Target/X86/X86FastISel.cpp
U    lib/Target/X86/X86ISelLowering.h

llvm-svn: 107987
2010-07-09 16:37:18 +00:00
Gabor Greif
52617fc462 cache result of operator*
llvm-svn: 107980
2010-07-09 16:08:33 +00:00
Jakob Stoklund Olesen
d4d9e53b20 Avoid creating %physreg:subidx operands in SimpleRegisterCoalescing::RemoveCopyByCommutingDef.
This fixes PR7602.

llvm-svn: 107957
2010-07-09 05:56:21 +00:00
Jakob Stoklund Olesen
cac54d6435 Deal with a few remaining spots that assume physical registers have live intervals.
This fixes PR7601.

llvm-svn: 107955
2010-07-09 04:35:38 +00:00
Jakob Stoklund Olesen
66b3649030 Fix broken isCopy handling in TrimLiveIntervalToLastUse.
llvm-svn: 107950
2010-07-09 01:27:21 +00:00
Jakob Stoklund Olesen
5165fa1c39 Handle COPY in VirtRegRewriter.
llvm-svn: 107949
2010-07-09 01:27:19 +00:00
Dan Gohman
0b5aa1cdd3 Re-apply bottom-up fast-isel, with fixes. Be very careful to avoid emitting
a DBG_VALUE after a terminator, or emitting any instructions before an EH_LABEL.

llvm-svn: 107943
2010-07-09 00:39:23 +00:00
Bob Wilson
21eed476e8 Reenable DAG combining for vector shuffles. It looks like it was temporarily
disabled and then never turned back on again.  Adjust some tests, one because
this change avoids an unnecessary instruction, and the other to make it
continue testing what it was intended to test.

llvm-svn: 107941
2010-07-09 00:38:12 +00:00
Stuart Hastings
d08fb75aaa Reverting r107918 and r107919. Radar 8063111.
llvm-svn: 107930
2010-07-08 23:25:39 +00:00
Jakob Stoklund Olesen
823e90e12a Revert "Fix broken isCopy handling in TrimLiveIntervalToLastUse"
This reverts commit 107921. It broke the clang self host.

llvm-svn: 107926
2010-07-08 22:52:47 +00:00
Devang Patel
4c6bd6612f Relax assertion. In optimized code, it is possible that first instruction is coming from a inlined function.
This fixes PR7596 .

llvm-svn: 107923
2010-07-08 22:39:20 +00:00
Bill Wendling
a992445ff2 Extension of r107506. Make sure that we don't mark a function as having a call
if the inline ASM doesn't need a stack frame.

llvm-svn: 107922
2010-07-08 22:38:02 +00:00
Jakob Stoklund Olesen
75c465585a Fix broken isCopy handling in TrimLiveIntervalToLastUse
llvm-svn: 107921
2010-07-08 22:30:38 +00:00
Stuart Hastings
43d226deea Fix decl/def debug info for template functions. Radar 8063111.
llvm-svn: 107919
2010-07-08 22:28:59 +00:00
Devang Patel
9c160e1213 Reuse DIEInteger for 1. This is frequently used while emitting an attribute using dwarf::DW_FORM_flag form.
llvm-svn: 107903
2010-07-08 20:10:35 +00:00
Jim Grosbach
c280fc7514 Clean up scavengeRegister() a bit to prefer available regs, which allows
the simplification of frame index register scavenging to not have to check
for available registers directly and instead just let scavengeRegister()
handle it.

llvm-svn: 107880
2010-07-08 16:49:26 +00:00
Jakob Stoklund Olesen
00264624a9 Convert EXTRACT_SUBREG to COPY when emitting machine instrs.
EXTRACT_SUBREG no longer appears as a machine instruction. Use COPY instead.

Add isCopy() checks in many places using isMoveInstr() and isExtractSubreg().
The isMoveInstr hook will be removed later.

llvm-svn: 107879
2010-07-08 16:40:22 +00:00
Jakob Stoklund Olesen
a1e883dcf6 Remove references to INSERT_SUBREG after de-SSA.
Fix X86InstrInfo::convertToThreeAddressWithLEA to generate COPY instead of
INSERT_SUBREG.

llvm-svn: 107878
2010-07-08 16:40:15 +00:00
Benjamin Kramer
0ae3f08c0d Merge the duplicated iabs optimization in DAGCombiner and let it detected a few more idioms.
llvm-svn: 107868
2010-07-08 12:09:56 +00:00
Jakob Stoklund Olesen
89a4e25007 Add TargetInstrInfo::copyPhysReg hook and use it from LowerSubregs.
This target hook is intended to replace copyRegToReg entirely, but for now it
calls copyRegToReg.

Any remaining calls to copyRegToReg wil be replaced by COPY instructions.

llvm-svn: 107854
2010-07-08 05:01:41 +00:00
Dan Gohman
e75704369d Revert 107840 107839 107813 107804 107800 107797 107791.
Debug info intrinsics win for now.

llvm-svn: 107850
2010-07-08 01:00:56 +00:00
Jim Grosbach
6533f24370 When processing frame index virtual registers, consider all available registers
(if there are any) and use the one which remains available for the longest
rather than just using the first one. This should help enable better re-use
of the loaded frame index values. rdar://7318760

llvm-svn: 107847
2010-07-08 00:38:54 +00:00
Dan Gohman
eb9164dc50 Don't forward-declare registers for static allocas, which we'll
prefer to materialize as local constants. This fixes the clang
bootstrap abort.

llvm-svn: 107840
2010-07-07 23:52:58 +00:00
Dan Gohman
1adc499dda Fix -fast-isel-abort to check the right instruction.
llvm-svn: 107839
2010-07-07 23:47:25 +00:00
Devang Patel
a37a95ea2f One MDNode may be used to create regular DIE as well as abstract DIE.
Keep track of abstract subprogram DIEs. 

llvm-svn: 107822
2010-07-07 22:20:57 +00:00
Evan Cheng
1c349f18f8 Move getExtLoad() and (some) getLoad() DebugLoc argument after EVT argument for consistency sake.
llvm-svn: 107820
2010-07-07 22:15:37 +00:00
Dan Gohman
25d5c1b4f8 Not all custom inserters create new basic blocks. If the inserter
didn't create a new block, don't reset the insert position.

llvm-svn: 107813
2010-07-07 21:18:22 +00:00
Devang Patel
9a0339fc1f Rename couple of maps.
llvm-svn: 107810
2010-07-07 20:49:57 +00:00
Devang Patel
30265c4f8b 80 cols.
llvm-svn: 107807
2010-07-07 20:12:52 +00:00
Dan Gohman
e7ccc51cc1 Implement bottom-up fast-isel. This has the advantage of not requiring
a separate DCE pass over MachineInstrs.

llvm-svn: 107804
2010-07-07 19:20:32 +00:00
Dan Gohman
2d4d01d0de Add X86FastISel support for return statements. This entails refactoring
a bunch of stuff, to allow the target-independent calling convention
logic to be employed.

llvm-svn: 107800
2010-07-07 18:32:53 +00:00
Dan Gohman
b792f844ad Update the insert position after scheduling, which may change the
position when emitting multiple blocks when executing a custom
inserter.

llvm-svn: 107797
2010-07-07 18:22:13 +00:00
Devang Patel
637ee5f149 Update comment.
llvm-svn: 107796
2010-07-07 18:18:18 +00:00
Dan Gohman
769201448d Fix debugging strings.
llvm-svn: 107795
2010-07-07 17:28:45 +00:00
Dan Gohman
ffe64b1ee5 Give FunctionLoweringInfo an MBB member, avoiding the need to pass it
around everywhere, and also give it an InsertPt member, to enable isel
to operate at an arbitrary position within a block, rather than just
appending to a block.

llvm-svn: 107791
2010-07-07 16:47:08 +00:00
Dan Gohman
87fb4e8fcd Simplify FastISel's constructor by giving it a FunctionLoweringInfo
instance, rather than pointers to all of FunctionLoweringInfo's
members.

This eliminates an NDEBUG ABI sensitivity.

llvm-svn: 107789
2010-07-07 16:29:44 +00:00
Dan Gohman
e784616fbb Move FunctionLoweringInfo.h out into include/llvm/CodeGen. This will
allow target-specific fast-isel code to make use of it directly.

llvm-svn: 107787
2010-07-07 16:01:37 +00:00
Dan Gohman
fe7532a308 Split the SDValue out of OutputArg so that SelectionDAG-independent
code can do calling-convention queries. This obviates OutputArgReg.

llvm-svn: 107786
2010-07-07 15:54:55 +00:00
Dan Gohman
498e5f899d Move CallingConvLower.cpp out of the SelectionDAG directory.
llvm-svn: 107781
2010-07-07 15:15:27 +00:00
Jakob Stoklund Olesen
8e1338eea8 Fix more places assuming subregisters have live intervals
llvm-svn: 107780
2010-07-07 14:41:22 +00:00
Dan Gohman
88c547ede9 Add a getFirstNonPHI utility function.
llvm-svn: 107778
2010-07-07 14:33:51 +00:00
Jakob Stoklund Olesen
f0e551d4f4 Revert "Remove references to INSERT_SUBREG after de-SSA" r107725.
Buildbot breakage.

llvm-svn: 107744
2010-07-07 00:32:25 +00:00
Jim Grosbach
dc0a0659be By default, the eh.sjlj.setjmp/longjmp intrinsics should just do nothing rather
than assuming a target will custom lower them. Targets which do so should
exlicitly mark them as having custom lowerings. PR7454.

llvm-svn: 107734
2010-07-06 23:44:52 +00:00
Jakob Stoklund Olesen
e2d3067f6b Remove references to INSERT_SUBREG after de-SSA
llvm-svn: 107732
2010-07-06 23:40:35 +00:00
Jakob Stoklund Olesen
70ee3ecd33 Convert INSERT_SUBREG to COPY in TwoAddressInstructionPass.
INSERT_SUBREG will now only appear in SSA machine instructions.

Fix the handling of partial redefs in ProcessImplicitDefs. This is now relevant
since partial redef COPY instructions appear.

llvm-svn: 107726
2010-07-06 23:26:25 +00:00
Dan Gohman
ee0cb70381 CanLowerReturn doesn't need a SelectionDAG; it just needs an LLVMContext.
SelectBasicBlock doesn't needs its BasicBlock argument.

llvm-svn: 107712
2010-07-06 22:19:37 +00:00
Devang Patel
a3ca21b228 Propagate debug loc.
llvm-svn: 107710
2010-07-06 22:08:15 +00:00
Jakob Stoklund Olesen
15fed3bd30 One more case assuming that subregs have live ranges.
llvm-svn: 107700
2010-07-06 21:13:03 +00:00
Jakob Stoklund Olesen
bcf3409107 Fix buildbot breakage where a def is missing.
llvm-svn: 107698
2010-07-06 21:06:39 +00:00
Jakob Stoklund Olesen
a64c0a3d22 Be more forgiving when calculating alias interference for physreg coalescing.
It is OK for an alias live range to overlap if there is a copy to or from the
physical register. CoalescerPair can work out if the copy is coalescable
independently of the alias.

This means that we can join with the actual destination interval instead of
using the getOrigDstReg() hack. It is no longer necessary to merge clobber
ranges into subregisters.

llvm-svn: 107695
2010-07-06 20:31:51 +00:00