c7e291b354
vrev is incorrectly defined in the perfect shuffle table. The ordering is backwards (should be 0x3210 versus 0x1032) which exposed a bug when doing a shuffle on a 4xi16. I've attached a test case.
...
llvm-svn: 131488
2011-05-17 20:48:40 +00:00
341b38c22a
Preserve line number information.
...
llvm-svn: 131482
2011-05-17 20:00:02 +00:00
c5933f2418
Set debug loc for new load instruction.
...
llvm-svn: 131481
2011-05-17 19:43:38 +00:00
c23bcbc498
Preserve line number information.
...
llvm-svn: 131480
2011-05-17 19:43:06 +00:00
6f6b44d19d
Enable autodetect of popcnt
...
llvm-svn: 131476
2011-05-17 18:33:37 +00:00
7b27942fe7
Add x86 fast-isel for calls returning first-class aggregates. rdar://9435872.
...
This is r131438 with a couple small fixes.
llvm-svn: 131474
2011-05-17 18:29:03 +00:00
d000a2c26e
Clean up the mess created by r131467+r131469.
...
llvm-svn: 131471
2011-05-17 18:02:22 +00:00
c65d8eda7b
Revert 131467 due to buildbot complaint.
...
llvm-svn: 131469
2011-05-17 16:59:46 +00:00
3cf5308890
Fix an obscure issue in X86_64 parameter passing: if a tiny byval is
...
passed as the fifth parameter, insure it's passed correctly (in R9).
rdar://problem/6920088
llvm-svn: 131467
2011-05-17 16:45:55 +00:00
52375e6a01
Tweak cross-class coalescing to be more aggressive when the target class is small.
...
The greedy register allocator has live range splitting and register class
inflation, so it can actually fully undo this join, including restoring the
original register classes.
We still don't want to do this for long live ranges, mostly because of the high
register pressure of there are many constrained live ranges overlapping.
llvm-svn: 131466
2011-05-17 16:38:37 +00:00
0693182265
Don't include information about the build into the information returned by
...
getHostTriple. This fixes a 32 bit clang running on a 64 bit ubuntu.
llvm-svn: 131463
2011-05-17 15:26:34 +00:00
d8edb1d5cc
Fix a bug in PerformEXTRACT_VECTOR_ELTCombine. The code created an ADD SDNode
...
with two different types, in cases where the index and the ptr had different
types.
llvm-svn: 131461
2011-05-17 08:31:57 +00:00
56a42ebf15
Update comment.
...
llvm-svn: 131459
2011-05-17 08:16:14 +00:00
a1d9e29552
Support XOR and AND optimization with no return value.
...
Finishes off rdar://8470697
llvm-svn: 131458
2011-05-17 08:10:18 +00:00
abfe3131e3
Couple less magic numbers.
...
llvm-svn: 131457
2011-05-17 07:50:41 +00:00
eb47a2a1e5
Make this code a little less magic number laden.
...
llvm-svn: 131456
2011-05-17 07:47:55 +00:00
1e81f57bf0
add a note
...
llvm-svn: 131455
2011-05-17 07:22:33 +00:00
7335e8a720
Back out r131444 and r131438; they're breaking nightly tests. I'll look into
...
it more tomorrow.
llvm-svn: 131451
2011-05-17 02:36:59 +00:00
83ba150f3a
Add x86 fast-isel for calls returning first-class aggregates. rdar://9435872.
...
llvm-svn: 131438
2011-05-17 00:13:47 +00:00
97f0cf32ea
@llvm.lifetime.begin acts as a load, not @llvm.lifetime.end.
...
llvm-svn: 131437
2011-05-17 00:05:49 +00:00
4edf17d91f
Teach LiveInterval::isZeroLength about null SlotIndexes.
...
When instructions are deleted, they leave tombstone SlotIndex entries.
The isZeroLength method should ignore these null indexes.
This causes RABasic to sometimes spill a callee-saved register in the
abi-isel.ll test, so don't run that test with -regalloc=basic. Prioritizing
register allocation according to spill weight can cause more registers to be
used.
llvm-svn: 131436
2011-05-16 23:50:05 +00:00
4e983166bc
Kill some dead code.
...
llvm-svn: 131431
2011-05-16 22:24:07 +00:00
d282f46c6b
Delete unused variables.
...
llvm-svn: 131430
2011-05-16 22:19:54 +00:00
d4d12d14b5
Trim #includes.
...
llvm-svn: 131429
2011-05-16 22:14:50 +00:00
ae9b1685a8
Fix whitespace and 80-column violations.
...
llvm-svn: 131428
2011-05-16 22:09:53 +00:00
a0b682db62
There is no need to force DebugLoc on a PHI at this point.
...
llvm-svn: 131427
2011-05-16 22:05:03 +00:00
e85c0dde7a
Track how many insns fast-isel successfully selects as well as how many it
...
misses.
llvm-svn: 131426
2011-05-16 21:51:07 +00:00
d4a3609d30
Remove dead code. Fix associated test to use FileCheck.
...
llvm-svn: 131424
2011-05-16 21:28:22 +00:00
8e60ff11db
Preserve debug info for unused zero extended boolean argument.
...
Radar 9422775.
llvm-svn: 131422
2011-05-16 21:24:05 +00:00
2701815ed8
Add a method I forgot in the last commit. Don't worry, this one passed
...
self-host :).
llvm-svn: 131421
2011-05-16 21:13:58 +00:00
a4d4a0162d
Make fast-isel work correctly s/uadd.with.overflow intrinsics.
...
llvm-svn: 131420
2011-05-16 21:06:17 +00:00
4c08bb450a
Fix silly typo.
...
llvm-svn: 131419
2011-05-16 20:34:53 +00:00
9ac944774f
Basic fast-isel of extractvalue. Not too helpful on its own, given the IR clang generates for cases like this, but it should become more useful soon.
...
llvm-svn: 131417
2011-05-16 20:27:46 +00:00
94c31fdd31
Add a FIXME reminder to remove ForceARMElfPIC switch.
...
llvm-svn: 131411
2011-05-16 16:35:21 +00:00
e90c1cb221
sets bit 0 of the function address of thumb function in .symtab
...
("T is 1 if the target symbol S has type STT_FUNC and the
symbol addresses a Thumb instruction ;it is 0 otherwise."
from "ELF for the ARM Architecture" 4.7.1.2)
Patch by Koan-Sin Tan!
llvm-svn: 131406
2011-05-16 16:17:21 +00:00
71f8b08a80
Extra refactoring noticed by Eli Friedman.
...
llvm-svn: 131405
2011-05-16 15:48:45 +00:00
2050af838d
Don't do tail calls in a function that call setjmp. The stack might be
...
corrupted when setjmp returns again.
llvm-svn: 131399
2011-05-16 03:05:33 +00:00
2f10078ae7
Fix copy-pasto.
...
llvm-svn: 131384
2011-05-15 17:28:27 +00:00
af18d07ed6
Add stub methods to MCStreamer for emitting Win64 exception-handling
...
information.
llvm-svn: 131382
2011-05-15 17:20:01 +00:00
d96205c4e5
SimplifyCFG: Use ComputeMaskedBits to prune dead cases from switch instructions.
...
llvm-svn: 131345
2011-05-14 15:57:25 +00:00
66a82b966e
Avoid combining GEPs that might overflow at runtime.
...
rdar://problem/9267970
Patch by Julien Lerouge!
llvm-svn: 131339
2011-05-14 05:55:10 +00:00
8f1e11cde9
Fix a FIXME by moving the fast-isel implementation of the objectsize intrinsic from the x86 code to the generic code.
...
llvm-svn: 131332
2011-05-14 00:47:51 +00:00
df9db7ed92
Don't produce a vmovntdq if we don't have AVX support.
...
llvm-svn: 131330
2011-05-14 00:30:01 +00:00
f080a57b81
Zap useless code; this hasn't done anything useful since fast-isel switched to being bottom-up (a very long time ago).
...
llvm-svn: 131329
2011-05-14 00:19:32 +00:00
f6b1846f39
Be a bit more permissive about symbols we don't understand. Just skip them
...
rather than throwing an error.
llvm-svn: 131322
2011-05-13 23:11:30 +00:00
0bd34fbd01
ExecutionEngine: move createJIT() definition (v2)
...
As an ExecutionEngine class function, its definition
really belongs in ExecutionEngine.cpp, not JIT.cpp.
llvm-svn: 131320
2011-05-13 22:02:53 +00:00
8418fdcd59
ExecutionEngine: push TargetMachine creation into clients (v2)
...
In particular, into EngineBuilder. This should only impact
the private API between the EE and EB classes, not external
clients, since JITCtor and MCJITCtor are both protected members.
llvm-svn: 131317
2011-05-13 21:51:29 +00:00
1756faa472
ExecutionEngine: fix JIT/MCJIT selectTarget() duplication (v2)
...
This prepares for making JITCtor/MCJITCtor take a
TargetMachine* directly from clients like EngineBuilder.
llvm-svn: 131316
2011-05-13 21:36:16 +00:00
65ed49dfc7
Teach the RtDyld to tell the memory manager about how much space a function
...
actually takes rather than how much memory was allocated for it. This
is more accurate and should help the manager pack things more effectively.
llvm-svn: 131305
2011-05-13 20:12:14 +00:00
e53b7d1a11
Make codegen able to handle values of empty types. This is one way
...
to fix PR9900. I will keep it open until sable is able to comment on it.
llvm-svn: 131294
2011-05-13 15:18:06 +00:00
7e11f9e26d
Fix a source of non determinism in FindUsedTypes, use a SetVector instead of a
...
set.
rdar://9423996
llvm-svn: 131283
2011-05-13 05:20:42 +00:00
03957dfeb1
Convert SimplifyIVUsers into a worklist instead of a single pass over
...
the users.
llvm-svn: 131277
2011-05-13 01:12:21 +00:00
aa02c0847d
Since I can't reproduce the failures from 131261, re-trying with a
...
simplified version. <rdar://problem/9298790>
llvm-svn: 131274
2011-05-13 00:51:54 +00:00
8d57d8ea64
Revert 131266 and 131261 due to buildbot complaints.
...
rdar://problem/9298790
llvm-svn: 131269
2011-05-13 00:15:17 +00:00
89f1b47e3a
Non-fast-isel followup to 129634; correctly handle branches controlled
...
by non-CMP expressions. The executable test case (129821) would test
this as well, if we had an "-O0 -disable-arm-fast-isel" LLVM-GCC
tester. Alas, the ARM assembly would be very difficult to check with
FileCheck.
The thumb2-cbnz.ll test is affected; it generates larger code (tst.w
vs. cmp #0 ), but I believe the new version is correct.
rdar://problem/9298790
llvm-svn: 131261
2011-05-12 23:36:41 +00:00
8a88026ae3
Update comment.
...
llvm-svn: 131258
2011-05-12 22:35:48 +00:00
12419aee7a
Doug convinced me that DW_AT_APPLE_objc_complete_type is more appropriate name.
...
s/DW_AT_APPLE_objc_class_extension/DW_AT_APPLE_objc_complete_type/g
llvm-svn: 131244
2011-05-12 21:29:42 +00:00
1b2d526c8b
MCJIT section loading should just skip non-text sections rather than
...
erroring out completely. Some modules produce sections that aren't referenced,
so it's friendlier to clients like LLDB to just skip them, at least for now.
llvm-svn: 131243
2011-05-12 21:21:16 +00:00
43054e6159
Re-enable branchfolding common code hoisting optimization. Fixed a liveness test bug and also taught it to update liveins.
...
llvm-svn: 131241
2011-05-12 20:30:01 +00:00
2409e7843b
Let Objective-C front-end identify class extension, in dwarf output, using an attribute DW_AT_APPLE_objc_class_extension.
...
llvm-svn: 131238
2011-05-12 19:06:16 +00:00
33469b2cae
Temporarily disable the transformation. It's breaking 186.crafty in some configuration.
...
llvm-svn: 131235
2011-05-12 18:44:58 +00:00
9efe39ea38
The MCJIT memory manager needs to initialize its Module member.
...
llvm-svn: 131234
2011-05-12 18:21:23 +00:00
e50a3d16e9
Fix setting of isCommutable flag.
...
llvm-svn: 131233
2011-05-12 17:42:08 +00:00
cfdf33904b
Re-commit 131172 with fix. MachineInstr identity checks should check dead
...
markers. In some cases a register def is dead on one path, but not on
another.
This is passing Clang self-hosting.
llvm-svn: 131214
2011-05-12 00:56:58 +00:00
81683ed232
indvars: Added SimplifyIVUsers.
...
Interleave IV simplifications. Currently involves EliminateComparison
and EliminateRemainder. Next I'll add EliminateExtend.
llvm-svn: 131210
2011-05-12 00:04:28 +00:00
7c6c90b35d
Remove an unused variable and move a couple others inside DEBUG.
...
llvm-svn: 131208
2011-05-11 23:34:51 +00:00
c09e726455
Address the last bit of relocation flag related divergence betweeen
...
LLVM and binutils.
With this patch, there are no functional differences between the .o
produced directly from LLVM versus the .s to .o via GNU as, for relocation tags
at least, for both PIC and non-PIC modes.
Because some non-PIC reloc tags are used (legally) on PIC, so IsPCRel flag is
necessary but not sufficient to determine whether the overall codegen mode is
PIC or not. Why is this necessary? There is an incompatibility of how relocs
are emitted in the .rodata section. Binutils PIC likes to emit certain relocs
as section relative offsets. Non-PIC does not do this.
So I added a hidden switch on the ELFObjectwriter "-arm-elf-force-pic" which
forces the objectwriter to pretend that all relocs are for PIC mode.
Todo: Activate ForceARMElfPIC to true if -relocation-model=pic is selected
on llc.
Todo: There are probably more issues for PIC mode on ARM/MC/ELF...
Todo: Existing tests in MC/ARM/elf-reloc*.ll need to be converted over to .s
tests as well as expanded to cover the gamut.
llvm-svn: 131205
2011-05-11 22:53:06 +00:00
2a9dbbbb12
Turn this into a table, this will make more sense shortly.
...
Part of rdar://8470697
llvm-svn: 131200
2011-05-11 21:44:58 +00:00
34a6620748
Identify end of prologue (and beginning of function body) using DW_LNS_set_prologue_end line table opcode.
...
llvm-svn: 131194
2011-05-11 19:22:19 +00:00
31a0b5e2f0
Avoid hoisting spills when looking at a copy from another register that is also
...
about to be spilled.
This can only happen when two extra snippet registers are included in the spill,
and there is a copy between them. Hoisting the spill creates problems because
the hoist will mark the copy for later dead code elimination, and spilling the
second register will turn the copy into a spill.
<rdar://problem/9420853>
llvm-svn: 131192
2011-05-11 18:25:10 +00:00
b745623b71
Fix encoding of Thumb BLX register instructions. Patch by Koan-Sin Tan.
...
llvm-svn: 131189
2011-05-11 17:00:48 +00:00
69005e5953
Typo and missing checkin from r131186.
...
llvm-svn: 131187
2011-05-11 16:44:08 +00:00
55aeb55aa3
Bugpoint support for miscompilations that result in a crash.
...
This change allows bugpoint to pinpoint the "opt" pass and bitcode
segment responsible for a crash caused by miscompilation. At least it
works well for me now, without having to create any custom execution
wrappers.
llvm-svn: 131186
2011-05-11 16:31:24 +00:00
8a7beb80f0
Fixes a bug in the DAGCombiner. LoadSDNodes have two values (data, chain).
...
If there is a store after the load node, then there is a chain, which means
that there is another user. Thus, asking hasOneUser would fail. Instead we
ask hasNUsesOfValue on the 'data' value.
llvm-svn: 131183
2011-05-11 14:40:50 +00:00
8f971c27fb
Add custom lowering of X86 vector SRA/SRL/SHL when the shift amount is a splat vector.
...
llvm-svn: 131179
2011-05-11 08:12:09 +00:00
2a09d65979
Revert 131172 as it is causing clang to miscompile itself. I will try
...
to provide a reduced testcase.
llvm-svn: 131176
2011-05-11 03:27:17 +00:00
50117f8186
Give the 'eh.sjlj.dispatchsetup' intrinsic call the value coming from the setjmp
...
intrinsic call. This prevents it from being reordered so that it appears
*before* the setjmp intrinsic (thus making it completely useless).
<rdar://problem/9409683>
llvm-svn: 131174
2011-05-11 01:11:55 +00:00
05fc35e275
Add a late optimization to BranchFolding that hoist common instruction sequences
...
at the start of basic blocks to their common predecessor. It's actually quite
common (e.g. about 50 times in JM/lencod) and has shown to be a nice code size
benefit. e.g.
pushq %rax
testl %edi, %edi
jne LBB0_2
## BB#1:
xorb %al, %al
popq %rdx
ret
LBB0_2:
xorb %al, %al
callq _foo
popq %rdx
ret
=>
pushq %rax
xorb %al, %al
testl %edi, %edi
je LBB0_2
## BB#1:
callq _foo
LBB0_2:
popq %rdx
ret
rdar://9145558
llvm-svn: 131172
2011-05-11 01:03:01 +00:00
4a34e61e53
Optimize atomic lock or that doesn't use the result value.
...
Next up: xor and and.
Part of rdar://8470697
llvm-svn: 131171
2011-05-10 23:57:45 +00:00
dc9d9f8eeb
Fix cmake again.
...
llvm-svn: 131164
2011-05-10 22:42:41 +00:00
1ec5c8a8bc
Remove empty file.
...
llvm-svn: 131162
2011-05-10 22:38:17 +00:00
de32fa163f
Avoid a gcc warning.
...
llvm-svn: 131161
2011-05-10 22:28:35 +00:00
b361d2b2bc
Fix cmake build.
...
llvm-svn: 131160
2011-05-10 22:19:33 +00:00
e09457b02b
Revert r131155 for now. It makes VMCore depend on Analysis and Transforms
...
headers.
llvm-svn: 131159
2011-05-10 22:16:06 +00:00
a678098f24
Initialize moveTypeModule.
...
llvm-svn: 131157
2011-05-10 21:54:59 +00:00
768de0a0f8
Disable my little CopyToReg argument hack with fast-isel. rdar://problem/9413587 .
...
llvm-svn: 131156
2011-05-10 21:50:58 +00:00
c2fcb4df5e
Add support for plugins add passes to the default set of passes. The standard set of passes used by front ends can now be modified by LLVM plugins, without needing to modify any front ends.
...
Still to do:
- Allow replacing / removing passes (infrastructure there, just needs an infrastructure exposed)
- Defining sets of passes to be added or removed as a group
- Extending the support to allow user-defined groups of optimisations
- Allow plugins to be specified for loading automatically (e.g. from plugins.conf or some similar mechanism)
Reviewed by Nick Lewycky.
llvm-svn: 131155
2011-05-10 21:36:48 +00:00
999fa3bf1f
Correctly walk through nested and adjacent CALLSEQ_START nodes. No
...
test case; I've only seen this on a release branch, and I can't get it
to reproduce on trunk. rdar://problem/7662569
llvm-svn: 131152
2011-05-10 21:20:03 +00:00
19c1a56287
Produce a __debug_frame section on darwin ARM when appropriate.
...
llvm-svn: 131151
2011-05-10 21:04:45 +00:00
99f6735532
On MachO, unlike ELF, there should be no relocation to produce the CIE pointer.
...
llvm-svn: 131149
2011-05-10 20:59:42 +00:00
2fe0ee1ce2
Rename DwarfRequiresRelocationForStmtList to
...
DwarfRequiresRelocationForSectionOffset as this is not specific to StmtList.
llvm-svn: 131148
2011-05-10 20:35:05 +00:00
d0d2354258
The EH symbols are only needed in eh_frame, not debug_frame.
...
llvm-svn: 131146
2011-05-10 19:51:53 +00:00
fdc3e6fab6
Use .cfi_sections to put the unwind info in .debug_frame when possible. With
...
this clang will use .debug_frame in, for example,
clang -g -c -m32 test.c
This matches gcc's behaviour. It looks like .debug_frame is a bit bigger
than .eh_frame, but has the big advantage of not being allocated.
llvm-svn: 131140
2011-05-10 18:39:09 +00:00
e33464663f
Refactor lock versions of binary operators to be a little less
...
cut and paste.
llvm-svn: 131139
2011-05-10 18:36:16 +00:00
62f1ab79ec
First cut at getting debugging support for ARM/MC/ELF/.o
...
DWARF stuff also gets fixed up by ELFARMAsmBackend::ApplyFixup(),
but the offset is not guaranteed to be mod 4 == 0 as in text/data.
llvm-svn: 131137
2011-05-10 18:07:25 +00:00
50215afd8a
Fix PR9883. Make sure all caches are invalidated when a live range is repaired.
...
The previous invalidation missed the alias interference caches.
Also add a stats counter for the number of repaired ranges.
llvm-svn: 131133
2011-05-10 17:37:41 +00:00
27390b4a0e
In a debug_frame the cfi offset is to the start of the debug_frame section!
...
llvm-svn: 131129
2011-05-10 15:20:23 +00:00
ec53aa9485
Add CFIStartSections to the asm printer. Add an assert that at least
...
one of the sections is created.
llvm-svn: 131124
2011-05-10 13:39:48 +00:00
72d74e4606
PTX: add PTX 2.3 setting in PTX sub-target.
...
Patch by Wei-Ren Chen
llvm-svn: 131123
2011-05-10 12:32:11 +00:00
1ecb12fc57
Add support for producing .deubg_frame sections.
...
llvm-svn: 131121
2011-05-10 03:54:12 +00:00
b6444c0401
Small cleanups.
...
llvm-svn: 131120
2011-05-10 03:26:21 +00:00
b6089d6cac
Factor some code into a new EmitFrames method.
...
llvm-svn: 131119
2011-05-10 03:14:15 +00:00
0e130d1d37
Remove unused argument.
...
llvm-svn: 131118
2011-05-10 03:01:39 +00:00
74b101f3e3
Parsing and plumbing for .cfi_sections.
...
llvm-svn: 131117
2011-05-10 01:10:18 +00:00
3fd06f760b
Preserve line number information.
...
llvm-svn: 131112
2011-05-10 00:03:11 +00:00
589845d887
Do not ignore InlinedAt while walking up scope chain to find subprogram node.
...
llvm-svn: 131106
2011-05-09 22:14:49 +00:00
4480428474
Look through struct wrapped types for inline asm statments.
...
Patch by Evan Cheng.
llvm-svn: 131093
2011-05-09 20:04:43 +00:00
0daf687e1d
Change a few std::maps to DenseMaps.
...
llvm-svn: 131088
2011-05-09 18:44:09 +00:00
5dc19f916c
Fix td file comments for Mips.
...
Patch by Liu <proljc@gmail.com>!
llvm-svn: 131086
2011-05-09 18:16:46 +00:00
92ff16b7bb
Fixed MC encoding for index_align for VLD1/VST1 (single element from one lane) for size 32
...
llvm-svn: 131085
2011-05-09 17:47:27 +00:00
6be291a2cd
Indent properly, no functionality change.
...
llvm-svn: 131082
2011-05-09 08:03:33 +00:00
392445823d
Eliminate an unused line to fix a warning.
...
llvm-svn: 131078
2011-05-08 23:19:04 +00:00
89bd2ae517
Remove an assertion to fix PR9872.
...
It can happen that a live debug variable is the last use of a sub-register, and
the register allocator will pick a larger register class for the virtual
register. If the allocated register doesn't support the sub-register index,
just use %noreg for the debug variables instead of asserting.
In PR9872, a debug variable ends up in the sub_8bit_hi part of a GR32_ABCD
register. The register is split and one part is inflated to GR32 and assigned
%ESI because there are no more normal uses of sub_8bit_hi.
Since %ESI doesn't have that sub-register, substPhysReg asserted. Now it will
simply insert a %noreg instead, and the debug variable will be marked
unavailable in that range.
We don't currently have a way of saying: !"value" is in bits 8-15 of %ESI, I
don't know if DWARF even supports that.
llvm-svn: 131073
2011-05-08 19:21:08 +00:00
d724a590e5
X86: Add a bunch of peeps for add and sub of SETB.
...
"b + ((a < b) ? 1 : 0)" compiles into
cmpl %esi, %edi
adcl $0, %esi
instead of
cmpl %esi, %edi
sbbl %eax, %eax
andl $1, %eax
addl %esi, %eax
This saves a register, a false dependency on %eax
(Intel's CPUs still don't ignore it) and it's shorter.
llvm-svn: 131070
2011-05-08 18:36:07 +00:00
ab39c63538
Don't force relaxation of AdvanceLoc instructions on OS X. gdb is happy with
...
the smaller encoding and this cuts 270336 bytes from a release version of
clang and 1246272 bytes from a debug build.
llvm-svn: 131067
2011-05-08 14:35:21 +00:00
c132174169
Eliminate the ARM sub-register indexes that are not needed by the sources.
...
Tablegen will invent its own names for these indexes, and the register file is a
bit simpler.
llvm-svn: 131059
2011-05-07 21:22:42 +00:00
af32728a57
The comparision "max(x,y)==x" is equivalent to "x>=y". Since the max is
...
often expressed as "x >= y ? x : y", there is a good chance we can extract
the existing "x >= y" from it and use that as a replacement for "max(x,y)==x".
llvm-svn: 131049
2011-05-07 16:56:49 +00:00
1e3db02bda
Fix the non-MC encoding of pkhbt and pkhtb.
...
Patch by Stephen Hines.
llvm-svn: 131045
2011-05-07 04:37:27 +00:00
58799a35e5
Revert ExecutionEngine patches, they either failed to build or broke unit tests.
...
Please ensure the build is clean and tests are passing when recommitting.
llvm-svn: 131044
2011-05-07 03:12:54 +00:00
bcabcdcedd
Switch Darwin to the generic CIE/FDE printer.
...
llvm-svn: 131031
2011-05-06 22:29:04 +00:00
4c261a2831
ExecutionEngine: delete duplicated files
...
Forgot to `svn rm` these in revisions 131025 / 131029.
llvm-svn: 131030
2011-05-06 22:24:04 +00:00
00dd3d6001
ExecutionEngine: add missing file
...
From revision 131025.
llvm-svn: 131029
2011-05-06 22:20:09 +00:00
cbb7fa68ed
1. Keep lines in 80 columns.
...
2. Remove unused function.
3. Correct indentation.
llvm-svn: 131028
2011-05-06 22:11:29 +00:00
8c0487006e
ExecutionEngine: move createJIT() definition
...
As an ExecutionEngine class function, its definition
really belongs in ExecutionEngine.cpp, not JIT.cpp.
llvm-svn: 131027
2011-05-06 22:07:14 +00:00
ab6bd20da9
ExecutionEngine: push TargetMachine creation into clients
...
In particular, into EngineBuilder. This should only impact
the private API between the EE and EB classes, not external
clients, since JITCtor and MCJITCtor are both protected members.
llvm-svn: 131026
2011-05-06 22:06:22 +00:00
fed7f0b3a0
ExecutionEngine: fix JIT/MCJIT selectTarget() duplication
...
This prepares for making JITCtor/MCJITCtor take a
TargetMachine* directly from clients like EngineBuilder.
llvm-svn: 131025
2011-05-06 22:05:43 +00:00
a5c889982a
Emit a proper error message when register allocators run out of registers.
...
This can't be just an assertion, users can always write impossible inline
assembly. Such an assembly statement should be included in the error message.
llvm-svn: 131024
2011-05-06 21:58:30 +00:00
2e116a4491
Added an assertion, and updated a comment.
...
llvm-svn: 131022
2011-05-06 21:52:52 +00:00
64c9284411
It's valid to take the blockaddress of a different function, so remove this
...
assert in the bitcode writer. No change needed because the ValueEnumerator holds
a whole-module numbering anyhow. Fixes PR9857!
llvm-svn: 131016
2011-05-06 21:09:44 +00:00
d26fc5e013
80 col violations.
...
llvm-svn: 131015
2011-05-06 20:52:23 +00:00
2518f8376d
Make the logic for determining function alignment more explicit. No functionality change.
...
llvm-svn: 131012
2011-05-06 20:34:06 +00:00
7a78f66145
Use array_lengthof. No functional change.
...
llvm-svn: 131008
2011-05-06 19:50:10 +00:00
57c8f58aeb
Iterate backwards over debug locations when splitting them so they can be safely erased.
...
This should unbreak dragonegg-i386-linux and build-self-4-mingw32.
llvm-svn: 131007
2011-05-06 19:31:19 +00:00
84f9ad9bf2
Typo: Reviewed by Alistair.
...
llvm-svn: 131001
2011-05-06 18:14:32 +00:00
f8da028895
Update LiveDebugVariables after live range splitting.
...
After a virtual register is split, update any debug user variables that resided
in the old register. This ensures that the LiveDebugVariables are still correct
after register allocation.
This may create DBG_VALUE instructions that place a user variable in a register
in parts of the function and in a stack slot in other parts. DwarfDebug
currently doesn't support that.
llvm-svn: 130998
2011-05-06 18:00:02 +00:00
c86fe05923
Use TargetMachine hooks to properly print debug variable locations.
...
llvm-svn: 130997
2011-05-06 17:59:59 +00:00
6cc4e4ddd0
Also count identity copies.
...
llvm-svn: 130996
2011-05-06 17:59:57 +00:00
aab77fe574
Post-RA scheduler compile time fix. Quadratic computation of DAG node depth.
...
The post-ra scheduler was explicitly updating the depth of a node's
successors after scheduling it, regardless of whether the successor
was ready. This is quadratic for DAGs with transitively redundant
edges. I simply removed the useless update of depth, which is lazilly
computed later.
Fixes <rdar://problem/9044332> compiler takes way too long to build TextInput.
llvm-svn: 130992
2011-05-06 17:09:08 +00:00
17b532728b
Move CompileUnit::getOrCreateNameSpace() and CompileUnit::addPubType() from DwarfDebug.cpp to DwarfCompileUnit.cpp
...
llvm-svn: 130991
2011-05-06 16:57:54 +00:00
705d25a1f4
Nothing else uses this label.
...
llvm-svn: 130989
2011-05-06 15:44:29 +00:00
6e4fa20efb
Yet more dead code.
...
llvm-svn: 130988
2011-05-06 15:31:55 +00:00
d06c2c1b81
Update comments.
...
llvm-svn: 130987
2011-05-06 15:28:56 +00:00
4bfa978ca5
More dead code elimination.
...
llvm-svn: 130985
2011-05-06 15:22:26 +00:00
a716096677
Dead code elimination.
...
llvm-svn: 130984
2011-05-06 14:56:22 +00:00
11d70b6b32
PTX: add PTX 2.3 language target
...
Patch by Wei-Ren Chen
llvm-svn: 130980
2011-05-06 11:40:36 +00:00
a071c82900
Fix PR9820: a read-only call differs from a load in that a load doesn't
...
return the pointer being dereferenced, it returns the pointee, but a call
might return the pointer itself.
llvm-svn: 130979
2011-05-06 10:30:37 +00:00
5401962643
Re-revert r130877; it's apparently causing a regression on 197.parser,
...
possibly related to cbnz formation.
llvm-svn: 130977
2011-05-06 05:23:07 +00:00
a7028848a1
The computation of string length is not that complicated. Fix it, again. :)
...
llvm-svn: 130967
2011-05-05 23:52:18 +00:00
bb237c72a6
Remove DwarfTableException.
...
llvm-svn: 130964
2011-05-05 23:19:54 +00:00
ec0a3a0bbf
Remove the DwarfTable enum.
...
llvm-svn: 130959
2011-05-05 22:14:31 +00:00
1ff74141bf
In debug output, clearly list new instructions without DebugLoc.
...
llvm-svn: 130957
2011-05-05 22:05:57 +00:00
d6141e1db2
Remove little used statistical counter.
...
llvm-svn: 130955
2011-05-05 22:00:08 +00:00
8a20e66926
PR9838: Fix transform introduced in r127064 to not trigger when only one side of the icmp is an exact shift.
...
llvm-svn: 130954
2011-05-05 21:59:18 +00:00
bc8e3f8c45
Move PPC Linux to CFI.
...
llvm-svn: 130951
2011-05-05 21:34:33 +00:00
59b6bfdbc6
Implement a really simple DwarfSjLjException.
...
llvm-svn: 130947
2011-05-05 20:48:31 +00:00
240c96e2ca
List all exception types in a switch.
...
llvm-svn: 130944
2011-05-05 19:48:34 +00:00
3dc73aae5e
ARM post RA scheduler compile time fix.
...
BuildSchedGraph was quadratic in the number of calls in the basic
block. After this fix, it keeps only a single call at the top of the
DefList so compile time doesn't blow up on large blocks. This reduces
postRA sched time on an external test case from 81s to 0.3s. Although
r130800 (reduced ARM register alias defs) also partially fixes the
issue by reducing the constant overhead of checking call interference
by an order of magnitude.
Fixes <rdar://problem/7662664> very poor compile time with post RA scheduling.
llvm-svn: 130943
2011-05-05 19:32:21 +00:00
24b1c48514
whitespace
...
llvm-svn: 130942
2011-05-05 19:24:06 +00:00
a4982bddf3
Don't produce a __debug_frame.
...
I tested both gdb on a bootstrapped clang and and the gdb testsuite on OS X (snow leopard)
and both are happy using __eh_frame.
llvm-svn: 130937
2011-05-05 18:43:39 +00:00
68b6b0efb0
Allow FastISel of three-register-operand instructions.
...
llvm-svn: 130934
2011-05-05 17:59:04 +00:00
73bc172493
If debug info for inlined function is missing then handle it gracefully.
...
llvm-svn: 130933
2011-05-05 17:54:26 +00:00
f1e2b50a30
PR9848: pandn is not commutative.
...
No test because I can't think of any way to write one that won't break quickly.
llvm-svn: 130932
2011-05-05 17:45:31 +00:00
c5a8c08dba
Add some statistics to the splitting and spilling frameworks.
...
llvm-svn: 130931
2011-05-05 17:22:53 +00:00
441a01a2b8
Avoid extra vreg copies for arguments passed in registers. Specifically, this can make MachineCSE more effective in some cases (especially in small functions). PR8361 / part of rdar://problem/8259436 .
...
llvm-svn: 130928
2011-05-05 16:53:34 +00:00
fd8c6adffb
Small syntax cleanup; we don't need to #define constants in C++. No functionality change intended.
...
llvm-svn: 130926
2011-05-05 16:25:23 +00:00
2311bdfa7b
Minor correction to r130877; fixes PR9846 and hopefully the buildbot failures.
...
llvm-svn: 130925
2011-05-05 16:18:11 +00:00
cd5afc5feb
Minor change: Fix the typo in RegionPass.h and RegionPass.cpp.
...
llvm-svn: 130920
2011-05-05 13:59:38 +00:00
a48b1375df
Remove a flag that would set the ".eh" symbol as .globl. MachO was the only one
...
who used this flag, and it now emits CFI and doesn't emit this anymore. All
other targets left this flag "false".
<rdar://problem/8486371>
llvm-svn: 130918
2011-05-05 06:49:15 +00:00
4f9c367f0b
Update the gcov version used slightly, to make it stop causing modern gcov's to
...
crash.
llvm-svn: 130911
2011-05-05 02:46:38 +00:00
baa878ce4a
Remove dead function.
...
llvm-svn: 130903
2011-05-05 00:17:34 +00:00
a3d5d167a8
When the path wasn't emitted by the frontend, discard any path on the source
...
filename.
llvm-svn: 130897
2011-05-05 00:03:30 +00:00
1d3854d583
Disable physical register coalescing by default.
...
Joining physregs is inherently dangerous because it uses a heuristic to avoid
creating invalid code. Linear scan had an emergency spilling mechanism to deal
with those rare cases. The new greedy allocator does not.
The greedy register allocator is much better at taking hints, so this has almost
no impact on code size and quality. The few cases where it matters show up as
unit tests that now have -join-physregs enabled explicitly.
llvm-svn: 130896
2011-05-04 23:59:00 +00:00
ffb798c1c6
Set debug loc for new instructions.
...
llvm-svn: 130895
2011-05-04 23:58:50 +00:00
ac794d46bf
Set debug location for new PHI nodes created in exit block.
...
llvm-svn: 130894
2011-05-04 23:58:22 +00:00
808dca12f8
Fix X86RegisterInfo::getMatchingSuperRegClass for sub_8bit_hi.
...
It is OK for B to be any GR8_ABCD_H superclass, the returned register class
doesn't have to map surjectively onto B.
llvm-svn: 130892
2011-05-04 23:54:54 +00:00
2a40131f6b
SjLj EH could produce a machine basic block that legitimately has more than one
...
landing pad as its successor.
SjLj exception handling jumps to the correct landing pad via a switch statement
that's generated right before code-gen. Loosen the constraint in the machine
instruction verifier to allow for this. Note, this isn't the most rigorous check
since we cannot determine where that switch statement came from. But it's
marginally better than turning this check off when SjLj exceptions are used.
<rdar://problem/9187612>
llvm-svn: 130881
2011-05-04 22:54:05 +00:00
306f8db721
Preserve line number information while threading jumps.
...
llvm-svn: 130880
2011-05-04 22:48:19 +00:00
0fe4608af2
Re-commit r130862 with a minor change to avoid an iterator running off the edge in some cases.
...
Original message:
Teach MachineCSE how to do simple cross-block CSE involving physregs. This allows, for example, eliminating duplicate cmpl's on x86. Part of rdar://problem/8259436 .
llvm-svn: 130877
2011-05-04 22:10:36 +00:00
c7e4fa7c19
Preserve line number info.
...
llvm-svn: 130876
2011-05-04 21:58:58 +00:00
0daa07eb90
preserve line number info.
...
llvm-svn: 130869
2011-05-04 21:37:05 +00:00
3bd79ba856
Back out r130862; it appears to be breaking bootstrap.
...
llvm-svn: 130867
2011-05-04 20:48:42 +00:00
a16fc2fec0
Teach MachineCSE how to do simple cross-block CSE involving physregs. This allows, for example, eliminating duplicate cmpl's on x86. Part of rdar://problem/8259436 .
...
llvm-svn: 130862
2011-05-04 19:54:24 +00:00
093a94cdae
Implement SystemZRegisterInfo::getMatchingSuperRegClass to enable cross-class joins.
...
llvm-svn: 130857
2011-05-04 19:02:04 +00:00
39ecf816c5
Do not emit location expression size twice.
...
llvm-svn: 130854
2011-05-04 19:00:57 +00:00
2998e6ce46
Fix cmake build.
...
llvm-svn: 130850
2011-05-04 18:46:56 +00:00
23e8ecf125
Prevent instructions using $gp from being placed between a jalr and the instruction that restores the clobbered $gp.
...
llvm-svn: 130847
2011-05-04 17:54:27 +00:00
a75589171a
Producing a DW_FORM_addr for DW_AT_stmt_list is probably correct, but
...
it is both inefficient and unexpected by dwarfdump. Change to
a DW_FORM_data4.
While in here, change the predicate name to reflect that the position
is not really absolute (it is an offset), just that the linker needs a
relocation.
llvm-svn: 130846
2011-05-04 17:44:06 +00:00
f71fe4333b
Rename -disable-physical-join to -join-physregs and invert it.
...
Physreg joining is still on by default, but I will turn it off shortly.
llvm-svn: 130844
2011-05-04 16:45:05 +00:00
c981f6299e
Tighten up check for empty (i.e. no meaningful debug info) module. This fixes dwarf-die2.c test case from gcc test suite.
...
llvm-svn: 130842
2011-05-04 16:34:02 +00:00
a228785526
Add variations on: max(x,y) >= min(x,z) folds to true. This isn't that common,
...
but according to my super-optimizer there are only two missed simplifications
of -instsimplify kind when compiling bzip2, and this is one of them. It amuses
me to have bzip2 be perfectly optimized as far as instsimplify goes!
llvm-svn: 130840
2011-05-04 16:05:05 +00:00
6d9f061a6b
Emit gcov data files to the directory specified in the metadata produced by the
...
frontend, if applicable.
llvm-svn: 130835
2011-05-04 04:03:04 +00:00
1abe296cfd
indvars: Added DisableIVRewrite and WidenIVs.
...
This adds functionality to remove size/zero extension during indvars
without generating a canonical IV and rewriting all IV users. It's
disabled by default so should have no effect on codegen. Work in progress.
llvm-svn: 130829
2011-05-04 02:10:13 +00:00
839beb4124
Implement MSP430RegisterInfo::getMatchingSuperRegClass to enable cross-class
...
coalescing.
llvm-svn: 130814
2011-05-04 01:01:36 +00:00
f8be385c9b
Mark ultra-super-registers QQQQ as call-clobbered instead of the D sub-registers.
...
LiveVariables doesn't understand that clobbering D0 and D1 completely overwrites
Q0, so if Q0 is live-in to a function, its live range will extend beyond a
function call that only clobbers D0 and D1. This shows up in the
ARM/2009-11-01-NeonMoves test case.
LiveVariables should probably implement the much stricter rules for physreg
liveness that RAFast imposes - a physreg is killed by the first use of any
alias.
llvm-svn: 130801
2011-05-03 22:31:24 +00:00
38c4e34abb
indvars: Added canExpandBackEdgeTakenCount.
...
Only create a canonical IV for backedge taken count if it will
actually be used by LinearFunctionTestReplace. And some related
cleanup, preparing to reduce dependence on canonical IVs.
No significant effect on x86 or arm in the test-suite.
llvm-svn: 130799
2011-05-03 22:24:10 +00:00
543596d57b
Even if the subprogram is going to use AT_specification, emit DW_AT_MIPS_linkage_name. This helps gdb and fixes var-path-expr.exp regression reported by gdb testsuite.
...
llvm-svn: 130794
2011-05-03 21:50:34 +00:00
f6daf94ab2
MCDwarf: Don't save Twine to local variable, this is almost never safe to do
...
(and should thus never be done).
- Should fix a crash on win32.
llvm-svn: 130793
2011-05-03 21:33:37 +00:00
db0996c822
Replace the "movnt" intrinsics with a native store + nontemporal metadata bit.
...
<rdar://problem/8460511>
llvm-svn: 130791
2011-05-03 21:11:17 +00:00
eaa6ed1ad8
Gracefully handle invalid live ranges. Fix PR9831.
...
Register coalescing can sometimes create live ranges that end in the middle of a
basic block without any killing instruction. When SplitKit detects this, it will
repair the live range by shrinking it to its uses.
Live range splitting also needs to know about this. When the range shrinks so
much that it becomes allocatable, live range splitting fails because it can't
find a good split point. It is paranoid about making progress, so an allocatable
range is considered an error.
The coalescer should really not be creating these bad live ranges. They appear
when coalescing dead copies.
llvm-svn: 130787
2011-05-03 20:42:13 +00:00
0a9c1246d7
Implement some basic simplifications involving min/max, for example
...
max(a,b) >= a -> true. According to my super-optimizer, these are
by far the most common simplifications (of the -instsimplify kind)
that occur in the testsuite and aren't caught by -std-compile-opts.
llvm-svn: 130780
2011-05-03 19:53:10 +00:00
22fc723818
Fix function MipsRegisterInfo::getRegisterNumbering.
...
llvm-svn: 130774
2011-05-03 18:41:54 +00:00
09585e1c5d
Temporarily disable use of divmod compiler-rt functions for iOS.
...
llvm-svn: 130766
2011-05-03 17:33:22 +00:00
86c6e7057d
Fold ARM coprocessor intrinsics patterns into the instructions defs whenever
...
it's possible.
llvm-svn: 130764
2011-05-03 17:29:29 +00:00
168c9005b5
Add a few ARM coprocessor intrinsics. Testcases included
...
llvm-svn: 130763
2011-05-03 17:29:22 +00:00
e02e58528a
If the front end has emitted llvm.dbg.cu and other debug info anchors (clang does it now) then use them directly. This saves one scan of entire module, to collect debug info, which in turns saves few machine cycles at compile time.
...
llvm-svn: 130759
2011-05-03 16:45:22 +00:00
09fa69e151
Use llvm.dbg.cu named metadata to collect compile units.
...
llvm-svn: 130756
2011-05-03 16:18:28 +00:00
9c373c1c7a
Remove unused variables caught by GCC's -Wunused-but-set-variable.
...
llvm-svn: 130755
2011-05-03 16:00:27 +00:00
9973738b65
Add pentium{3,4}m cpus. Patch by Alexander Best!
...
llvm-svn: 130749
2011-05-03 03:42:50 +00:00
d2aa241378
xmm0 is an implicit parameter in this and so shouldn't be in the
...
string template.
Fixes rdar://8493866
llvm-svn: 130747
2011-05-03 01:28:32 +00:00
6136e94897
Add an unfolded offset field to LSR's Formula record. This is used to
...
model constants which can be added to base registers via add-immediate
instructions which don't require an additional register to materialize
the immediate.
llvm-svn: 130743
2011-05-03 00:46:49 +00:00
66fd073974
Other parts of the SelectionDAG framework assume that targets use their pointer type for vector indices. Make the vector unrolling code respect that.
...
llvm-svn: 130733
2011-05-02 22:25:45 +00:00
bb35e8ba88
Scanning entire basic block may be too expensive in terms of compile time. Instead, just use whatever location info first non-phi instruction has.
...
llvm-svn: 130729
2011-05-02 21:57:00 +00:00
16f7cf6a2f
Handle <def,undef> in the second loop as well.
...
llvm-svn: 130718
2011-05-02 20:36:53 +00:00
39b56b4b9f
Apparently the check for direct calls is unnecessary.
...
llvm-svn: 130716
2011-05-02 20:16:33 +00:00
6297a715dc
Use the PrintReg adaptor to correctly print live-in registers in debug output.
...
llvm-svn: 130715
2011-05-02 20:06:30 +00:00
7dffc8ecf2
Only ignore <undef> use operands, keep the <def,undef> ops.
...
Def operands may also have an <undef> flag, but that just means that a
sub-register redef doesn't actually read the super-register. For physical
registers, it has no meaning.
llvm-svn: 130714
2011-05-02 20:06:28 +00:00
f91c5ab341
Fix PR9579: when simplifying a compare to "true" or "false", and it was
...
a vector compare, generate a vector result rather than i1 (and crashing).
llvm-svn: 130706
2011-05-02 18:51:41 +00:00
6b699f863f
Remove unused variable.
...
llvm-svn: 130705
2011-05-02 18:41:29 +00:00
420ab5f180
Emit debug info for global variables first.
...
This works around a limitation in gdb which is reported by following inherit.exp test failures from gdb testsuite.
gdb.cp/inherit.exp: print g_vB.vB::vb
gdb.cp/inherit.exp: print g_vB.vB::vx
gdb.cp/inherit.exp: print g_vC.vC::vc
gdb.cp/inherit.exp: print g_vC.vC::vx
gdb.cp/inherit.exp: print g_vD.vB::vb
...
llvm-svn: 130702
2011-05-02 18:19:17 +00:00
a3e3699c88
Move some rem transforms out of instcombine and into instsimplify.
...
This automagically provides a transform noticed by my super-optimizer
as occurring quite often: "rem x, (select cond, x, 1)" -> 0.
llvm-svn: 130694
2011-05-02 16:27:02 +00:00
5164e6e8b2
Add 130690 back.
...
llvm-svn: 130693
2011-05-02 15:58:16 +00:00
e406670954
Only produce the eh_frame section if we have at least one personality function.
...
llvm-svn: 130692
2011-05-02 15:49:52 +00:00
a392475865
Revert while I debug the tests that use march but not mtriple.
...
llvm-svn: 130691
2011-05-02 15:42:31 +00:00
c2aad4f2a3
Move ppc OS X to cfi too. I am building it on an old ppc mini, but it will take some time.
...
llvm-svn: 130690
2011-05-02 15:00:52 +00:00
7d4067936a
Minimize the slot indexes spanned by register ranges created when splitting.
...
When an interfering live range ends at a dead slot index between two
instructions, make sure that the inserted copy instruction gets a slot index
after the dead ones. This makes it possible to avoid the interference.
Ideally, there shouldn't be interference ending at a deleted instruction, but
physical register coalescing can sometimes do that to sub-registers.
This fixes PR9823.
llvm-svn: 130687
2011-05-02 05:29:58 +00:00
e75ffa1b78
In option typo correction, consider -foo=VALUE flags as two distinct parts. The
...
comments claimed it did this, but the LHS value was actually an unused variable.
The new system considers only the '-foo' part when comparing it for typos
against flags that have values, but still look at the whole string for flags
that don't. That way, we'll still correct '-inst=combine' to '-instcombine'.
llvm-svn: 130685
2011-05-02 05:24:47 +00:00
5f1eb968f0
Remove dead variable pointed out by GCC 4.6 warnings, and reflow this a little
...
to scope a variable more tightly per llvm coding style. No functional change.
llvm-svn: 130684
2011-05-02 05:05:29 +00:00
23f61a09af
enhance memcpyopt to obey -fno-builtin and friends. This addresses a
...
problem reported on cfe-dev.
llvm-svn: 130661
2011-05-01 18:27:11 +00:00
fc8223670a
Add r130623 back now that ELF has been fixed to work with -fno-dwarf2-cfi-asm.
...
llvm-svn: 130658
2011-05-01 15:44:13 +00:00
4471f82e91
Windows/DynamicLibrary.inc: Clean up ELM_Callback. We may check the decl instead of the versions of individual libraries.
...
autoconf: Add checking ELM_Callback decl for mingw32 and mingw-w64.
cmake/config-ix.cmake: Add checking ELM_Callback decl for win32.
llvm-svn: 130657
2011-05-01 13:29:49 +00:00
ddc91b25e3
Remove an unused variable from this function introduced in r130637,
...
likely a result of copy/paste.
llvm-svn: 130640
2011-05-01 06:14:10 +00:00
750cb61553
GCC uses a different encoding of pointers in the FDE when using
...
-fno-dwarf2-cfi-asm. Implement the same behavior.
llvm-svn: 130637
2011-05-01 04:49:54 +00:00
95215a76cd
I forgot these files in the previous commit.
...
llvm-svn: 130635
2011-05-01 04:19:24 +00:00
fd05785324
Simplify the handling of pcrel relocations on ELF. Now we do the right thing
...
for all symbol differences and can drop the old EmitPCRelSymbolValue
method.
This also make getExprForFDESymbol on ELF equal to the one on MachO, and it
can be made non-virtual.
llvm-svn: 130634
2011-05-01 03:50:49 +00:00
b7c2286055
Revert the previous patch while I figure out how to make llvm-gcc
...
less agressive about disabling cfi on linux :-(
llvm-svn: 130626
2011-04-30 23:03:44 +00:00
2348cdd67f
X86AsmPrinter doesn't know how to handle the X86II::MO_GOT_ABSOLUTE_ADDRESS flag
...
after folding ADD32ri to ADD32mi, so don't do that.
This only happens when the greedy register allocator gets itself in trouble and
spills %vreg9 here:
16L %vreg9<def> = MOVPC32r 0, %ESP<imp-use>; GR32:%vreg9
48L %vreg9<def> = ADD32ri %vreg9, <es:_GLOBAL_OFFSET_TABLE_>[TF=1], %EFLAGS<imp-def,dead>; GR32:%vreg9
That should never happen, the live range should be split instead.
llvm-svn: 130625
2011-04-30 23:00:05 +00:00
5265bc483e
Enable CFI on OS X.
...
Currently the output should be almost identical to the one produced by CodeGen
to make the transition easier.
The only two differences I know of are:
* Some files get an extra advance loc of size 0. This will be fixed when
relaxations are enabled.
* The optimization of declaring an EH symbol as an external variable is not
implemented. This is a subset of adding the nounwind attribute, so we if really
this at -O0 we should probably do it at the IL level.
llvm-svn: 130623
2011-04-30 22:29:54 +00:00
38a0b94dce
When a physreg is live-in and live through a basic block, make sure its live
...
range covers the entire block.
The live range can't be terminated at a random instruction.
llvm-svn: 130619
2011-04-30 19:12:33 +00:00
9aa91b1f4e
InstCombine: Turn (zext A) udiv (zext B) into (zext (A udiv B)). Same for urem or constant B.
...
This obviously helps a lot if the division would be turned into a libcall
(think i64 udiv on i386), but div is also one of the few remaining instructions
on modern CPUs that become more expensive when the bitwidth gets bigger.
This also helps register pressure on i386 when dividing chars, divb needs
two 8-bit parts of a 16 bit register as input where divl uses two registers.
int foo(unsigned char a) { return a/10; }
int bar(unsigned char a, unsigned char b) { return a/b; }
compiles into (x86_64)
_foo:
imull $205, %edi, %eax
shrl $11, %eax
ret
_bar:
movzbl %dil, %eax
divb %sil, %al
movzbl %al, %eax
ret
llvm-svn: 130615
2011-04-30 18:16:07 +00:00
57b3df59b9
Use SimplifyDemandedBits on div instructions.
...
This folds away silly stuff like (a&255)/1000 -> 0.
llvm-svn: 130614
2011-04-30 18:16:00 +00:00
bde52bca69
Implement MCAsmStreamer::EmitEHSymAttributes. Doing this in the asm streamer
...
is a bit ugly, but doing it on the base MCStreamer would be redundant
with the object streamer which does it using SD.
llvm-svn: 130611
2011-04-30 16:34:57 +00:00
0b474c2d15
Handle PrivateExtern eh symbols.
...
llvm-svn: 130609
2011-04-30 16:22:46 +00:00
ec9b4a6b8b
Avoid using stale entries form the sibling value map.
...
This could happen when trying to use a value that had been eliminated after dead
code elimination and folding loads.
llvm-svn: 130597
2011-04-30 06:42:21 +00:00
357dd36136
Use hysteresis for local live range splitting as well.
...
llvm-svn: 130596
2011-04-30 05:07:46 +00:00
a3181d12c6
Add all the plumbing needed for MC to expand cfi to the old tables in
...
the final assembly. It is the same technique used when targeting
assemblers that don't support .loc.
llvm-svn: 130587
2011-04-30 03:44:37 +00:00
1d1eced025
Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr.
...
llvm-svn: 130585
2011-04-30 03:21:04 +00:00
d50e5eb8c3
Update comment.
...
llvm-svn: 130582
2011-04-30 03:13:08 +00:00
6e399a6ecb
Use a greedy algorithm for allocating registers.
...
llvm-svn: 130568
2011-04-30 01:37:54 +00:00
9f638ab181
Print out the 'nontemporal' info on a store.
...
llvm-svn: 130562
2011-04-29 23:45:22 +00:00
4105ed1523
Make FastEmit_ri_ try a bit harder to succeed for supported operations; FastEmit_i can fail for non-Thumb2 ARM. Makes ARMSimplifyAddress work correctly, and reduces the number of fast-isel bailouts on non-Thumb ARM.
...
llvm-svn: 130560
2011-04-29 23:34:52 +00:00
e02e07c3a6
80-col.
...
llvm-svn: 130558
2011-04-29 23:12:01 +00:00
468dfabce0
Zap a couple now-unused functions.
...
llvm-svn: 130557
2011-04-29 22:56:48 +00:00
328bad02fa
Switch to ImmLeaf (which can be used by FastISel) for a few more common ARM/Thumb2 patterns.
...
llvm-svn: 130552
2011-04-29 22:48:03 +00:00
a8e7411c74
Assing line number info to new PHIs created by SSA updater.
...
llvm-svn: 130551
2011-04-29 22:28:59 +00:00
7708746c33
Add FastEmitInst_ii for the arm fast isel generator. It doesn't use it, but
...
if it ever did it needs the def machinery.
llvm-svn: 130549
2011-04-29 22:07:50 +00:00
26b8ac4b8c
Some cleanup and optimize fallthrough more.
...
llvm-svn: 130546
2011-04-29 21:56:31 +00:00
6a85f9b42e
Avoid some uses of .uleb128. This is a small speedup and more importantly
...
lets this code be used when producing assembly code for old assemblers without
uleb support.
llvm-svn: 130544
2011-04-29 21:50:57 +00:00
6c961e1b75
Implement MCAsmStreamer::EmitCFIDefCfa.
...
llvm-svn: 130543
2011-04-29 21:41:06 +00:00
84d7eb7252
Print new instructions without DebugLoc.
...
llvm-svn: 130542
2011-04-29 21:36:04 +00:00
86caced370
Re-committing r130454, which does not in fact break anything.
...
Fix a rather obscure crash caused by ARM fast-isel generating code which redefines a register.
rdar://problem/9338332 .
llvm-svn: 130539
2011-04-29 21:22:56 +00:00
c1f7c1d469
Preserve line number information.
...
llvm-svn: 130536
2011-04-29 20:38:55 +00:00
8d46b47787
Add trunc->branch support, this won't help with clang's i8->i1 truncations
...
for bools, but is a start.
llvm-svn: 130534
2011-04-29 20:02:39 +00:00
616044acd5
SimplifyCFG: Expose phi node folding cost threshold as command line parameter
...
llvm-svn: 130528
2011-04-29 18:47:38 +00:00
e3511e15e0
SimplifyCFG: Add CostRemaining parameter to DominatesMergePoint
...
llvm-svn: 130527
2011-04-29 18:47:31 +00:00
61f6602acd
SimplifyCFG: Add Trunc, ZExt and SExt to the list of cheap instructions for phi node folding
...
llvm-svn: 130526
2011-04-29 18:47:25 +00:00
72032861c6
MCAsmLayout: Add support for computing the symbol offset of variables. Not
...
currently used, because variables don't get reported as being "defined".
llvm-svn: 130524
2011-04-29 18:20:20 +00:00
bea7b93c88
MC: Change variable symbols to be recognized as defined, by assigning their sections based on FindAssociatedSection().
...
llvm-svn: 130523
2011-04-29 18:20:17 +00:00
b200f93125
MC/Mach-O: Update getSymbolAddress() to support evaluation of variables.
...
llvm-svn: 130522
2011-04-29 18:13:42 +00:00
29ba55cfe4
MC/Mach-O: Allow emission of relocations for variables in some more cases.
...
llvm-svn: 130520
2011-04-29 18:10:47 +00:00
b9c2b6c50d
MC/Mach-O: Find section ordinal's by looking at the symbol, instead of assuming they are present in a fragment.
...
llvm-svn: 130519
2011-04-29 18:07:43 +00:00
124ae13421
Hoist MCLineEntry construction AsmPrinter so that anyone who derives from AsmPrinter can have line number entries.
...
PR 9810
llvm-svn: 130518
2011-04-29 18:00:54 +00:00
dc3e4cc5ed
MCExpr: Add FindAssociatedSection, which attempts to mirror the 'as' semantics
...
that associate sections with expressions.
llvm-svn: 130517
2011-04-29 18:00:03 +00:00
1bf128eaeb
MC/AsmParser: Generalize a check.
...
llvm-svn: 130515
2011-04-29 17:53:11 +00:00
dd8061e09f
Fix a C++0x portability issue with std::make_pair. Explicitly providing template arguments no longer works when the call arguments are lvalues.
...
llvm-svn: 130513
2011-04-29 16:57:12 +00:00
0e50682f26
Include <pthread.h> before we use pthread_self/pthread_kill
...
llvm-svn: 130510
2011-04-29 16:12:17 +00:00
1fc5bf9fc5
The last hack for producing bit identical output with cfi on OS X.
...
llvm-svn: 130504
2011-04-29 15:09:53 +00:00
697edc89a5
Change DwarfCFIException's member variables to track what it actually
...
emmits: .cfi_personality, .cfi_lsda and the moves.
llvm-svn: 130503
2011-04-29 14:48:51 +00:00
e794e17524
Teach Thumb2 isel to fold and->rotr ==> ROR.
...
Generalization of Nate Begeman's patch!
llvm-svn: 130502
2011-04-29 14:18:15 +00:00
b7a012a282
Factor some code to needsCFIMoves. Avoid printing moves when we don't have to.
...
llvm-svn: 130501
2011-04-29 14:14:06 +00:00
6708499b6d
This is done.
...
llvm-svn: 130499
2011-04-29 14:09:57 +00:00
f0e3f04470
Balance parentheses.
...
llvm-svn: 130489
2011-04-29 08:41:23 +00:00
16f18ed7b5
InstCombine: turn (C1 << A) << C2) into (C1 << C2) << A)
...
Fixes PR9809.
llvm-svn: 130485
2011-04-29 08:15:41 +00:00
011eae7512
clean up after Sean's r127646 patch.
...
llvm-svn: 130475
2011-04-29 05:40:18 +00:00
1d0c25756e
use the MachineInstrBuilder operator-> to simplify some code.
...
There are probably more instances of this floating around.
llvm-svn: 130474
2011-04-29 05:24:29 +00:00
68067664c3
Last bit by bit compatibility patch to MCDwarf.cpp: If a FDE with no LSDA is
...
assigned to a CIE that requires one, just output a 0.
llvm-svn: 130472
2011-04-29 03:06:29 +00:00
7c7151512c
Add an alternative implementation of CIE and FDE emission that outputs them
...
in the same order as the one in CodeGen.
llvm-svn: 130471
2011-04-29 02:42:28 +00:00
9ade5e2495
Update comments and checks to match reality.
...
llvm-svn: 130464
2011-04-29 00:07:20 +00:00
501d2e2c14
Whitespace.
...
llvm-svn: 130463
2011-04-29 00:03:10 +00:00
517728b1ae
Revert r130454; apparently this doesn't actually work.
...
llvm-svn: 130462
2011-04-28 23:55:14 +00:00
e4ecd42926
Fix a rather obscure crash caused by ARM fast-isel generating code which redefines a register.
...
rdar://problem/9338332 .
llvm-svn: 130454
2011-04-28 23:03:25 +00:00
80d1d3aaec
Preserve line number information.
...
llvm-svn: 130450
2011-04-28 22:48:14 +00:00
c99298ab5e
Coalesce some DEBUGs (moving an only-used-in-DEBUG variable's declaration into the DEBUG)
...
llvm-svn: 130448
2011-04-28 22:26:05 +00:00
cf9d1ad62e
We require threse bits to be zero, too.
...
This shouldn't happen in practice because the icmp would be a constant.
Add a check so we don't miscompile code if something goes wrong.
llvm-svn: 130446
2011-04-28 21:38:51 +00:00
6aa79492a5
Only read *predecessor once so as to fix a theoretical issue where it changes
...
between two reads (threading).
Fix an off-by-one in the indirect counter table that I meant to revert after an
earlier experiment. Whoops!
Implement GCOV_PREFIX. Doesn't handle GCOV_PREFIX_STRIP yet.
Fix an off-by-one in string emission. Extra whoops!
Tolerate DISubprograms that have null Function*'s attached to them. I don't yet
understand what this means, but it happens when you have a global static with
a non-trivial constructor/destructor.
Fix a crash on switch statements with a single successor (default-only).
llvm-svn: 130443
2011-04-28 21:35:49 +00:00
a86188bf8e
Target/X86/MC: Add an option for disabling arith relaxation, for my own testing
...
purposes.
llvm-svn: 130438
2011-04-28 21:23:31 +00:00
6bd6a70837
Add the getExprForFDESymbol method that responsible for computing the
...
expressions used in the FDE to refer to symbols.
llvm-svn: 130437
2011-04-28 21:04:39 +00:00
d36bdb5208
Beautify debug info probe output.
...
llvm-svn: 130435
2011-04-28 20:46:18 +00:00
e203bbb47e
Add MemoryBuffer::getBufferKind() to report whether a memory buffer uses malloc'ed or mmap'ed memory. This is for performance analysis.
...
llvm-svn: 130432
2011-04-28 20:34:18 +00:00
72aa1a8a68
Remove DbgDeclare only if all uses are converted.
...
llvm-svn: 130431
2011-04-28 20:32:02 +00:00
367342e209
Remove bounded StringRef::compare() since nothing but Clang SA was using it and it is just as easy to use StringRef::substr() preceding StringRef::compare() to achieve the same thing.
...
llvm-svn: 130430
2011-04-28 20:20:12 +00:00
7cd5101ad3
fast-isel sret calls, try 2. We actually do need to do something on x86-32. rdar://problem/9303592 .
...
llvm-svn: 130429
2011-04-28 20:19:12 +00:00
101720fb58
Fix a comment.
...
llvm-svn: 130428
2011-04-28 20:09:57 +00:00
a5452c0d67
improve comment.
...
llvm-svn: 130426
2011-04-28 20:02:57 +00:00
33d87d97f6
Do not lose line number info while eliminating tail call.
...
llvm-svn: 130419
2011-04-28 18:43:39 +00:00
1777601a74
final step needed to resolve PR6627, which allows us to flatten the code down to
...
a nice and tidy:
%x1 = load i32* %0, align 4
%1 = icmp eq i32 %x1, 1179403647
br i1 %1, label %if.then, label %if.end
instead of doing lots of loads and branches. May the FreeBSD bootloader
long fit in its allocated space.
llvm-svn: 130416
2011-04-28 18:15:47 +00:00
45e393fc9c
code cleanups only.
...
llvm-svn: 130414
2011-04-28 18:08:21 +00:00
d5a80ca3c8
Revert r130348; causing buildbot issues on x86-32.
...
llvm-svn: 130412
2011-04-28 18:06:10 +00:00
b63596436f
Add command line option to print debug info in human readable form as comment in llvm IR output. This, i.e -enable-debug-info-comment, is very useful if you want to easily find out which optimization pass is losing line number information.
...
llvm-svn: 130409
2011-04-28 17:41:38 +00:00
c4456ae6ec
Reapply r130340: Fix for PR9730.
...
llvm-svn: 130408
2011-04-28 17:30:04 +00:00
4145c0d3b1
InstCombine: Merge "(trunc x) == C1 & (and x, CA) == C2" into a single and+icmp.
...
This happens when GVN widens loads. Part of PR6627.
llvm-svn: 130405
2011-04-28 16:58:40 +00:00
4f012fd0a1
Be more layout aware here and swap the successor and branch condition
...
if it means we get a fallthrough.
llvm-svn: 130404
2011-04-28 16:52:09 +00:00
f81f789b6c
centralize "marking for deletion" into a helper function. Pass GVN around to
...
static functions instead of passing around tons of random ivars.
llvm-svn: 130403
2011-04-28 16:36:48 +00:00
6cec6ab275
Promote toErase to be an ivar of the GVN class.
...
llvm-svn: 130401
2011-04-28 16:18:52 +00:00
c5dac4df2e
Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it when
...
converting the symbol passed to .cfi_personality into bytes is the file.
llvm-svn: 130400
2011-04-28 16:09:09 +00:00
349c3298da
Mark the EH symbol global or weak if the corresponding function is.
...
llvm-svn: 130397
2011-04-28 12:50:37 +00:00
93da3c8233
Fix the last -Wnon-pod-memset I'm seeing. This is benign, but appears
...
a bit more sinister as the memset doesn't do what the constructor does.
There seems to be a cleaner solution than a cast here though, instead we
can point the memset destination into the union its actually trying to
clear.
An alternative is to point to the Untyped member of this union. Review
appreciated, and if that is cleaner I'm happy to switch. All of these
should be functionally equivalent to the original code.
llvm-svn: 130395
2011-04-28 08:37:18 +00:00
827a270a2a
teach GVN to widen integer loads when they are overaligned, when doing an
...
wider load would allow elimination of subsequent loads, and when the wider
load is still a native integer type. This eliminates a ton of loads on
various benchmarks involving struct fields, though it is somewhat hobbled
by clang not being very aggressive about field alignment.
This is yet another step along the way towards resolving PR6627.
llvm-svn: 130390
2011-04-28 07:29:08 +00:00
a98cd22d96
Let the immediate leaf pattern take transforms and switch the signed
...
immediate patterns in arm to using the pattern.
Handles rdar://9299434
llvm-svn: 130386
2011-04-28 05:49:04 +00:00
2a75c72e1c
move PR9803 to this readme.
...
llvm-svn: 130385
2011-04-28 05:33:16 +00:00
2eeee8cfef
Add a small temporary hack for producing identical eh_frame sections on OS X.
...
This removes one of the main advantages of moving eh_frame to MC, but
makes the transition a lot easier to debug (run md5).
llvm-svn: 130379
2011-04-28 04:04:14 +00:00
bf60fb0a37
Produce the EH_frame# symbols if needed.
...
llvm-svn: 130378
2011-04-28 03:26:11 +00:00
96b07932a3
Forward isFunctionEHFrameSymbolPrivate. If it is false, produce the foo.eh
...
symbols.
llvm-svn: 130375
2011-04-28 02:46:42 +00:00
3e021533cd
Teach dwarf writer to handle complex address expression for .debug_loc entries.
...
This fixes clang generated blocks' variables' debug info.
Radar 9279956.
llvm-svn: 130373
2011-04-28 02:22:40 +00:00
33c133919a
Fix a silly mistake in r130338.
...
llvm-svn: 130360
2011-04-28 00:42:03 +00:00
45c30df303
PTX: support for select_cc and fixes for setcc
...
- expansion of SELECT_CC into SETCC
- force SETCC result type to i1
- custom selection for handling i1 using SETCC
Patch by Dan Bailey
llvm-svn: 130358
2011-04-28 00:19:56 +00:00
498f703d84
PTX: support for select
...
- selection of SELP instruction
- new selp.ll test
Patch by Dan Bailey
llvm-svn: 130357
2011-04-28 00:19:55 +00:00
e7d272e68b
PTX: mov fix and rounding correction for cvt
...
- fix typo in MOV
- correct fp rounding on CVT
- new cvt.ll test
Patch by Dan Bailey
llvm-svn: 130356
2011-04-28 00:19:54 +00:00
f6880019d1
PTX: support for fneg
...
- selection of FNEG instruction
- new fneg.ll test
Patch by Dan Bailey
llvm-svn: 130355
2011-04-28 00:19:53 +00:00
99e03f1943
PTX: support for zext loads and trunc stores
...
- expansion of EXTLOAD and TRUNCSTORE instructions
Patch by Dan Bailey
llvm-svn: 130354
2011-04-28 00:19:52 +00:00
18e6ac83ea
PTX: support for bitwise operations on predicates
...
- selection of bitwise preds (AND, OR, XOR)
- new bitwise.ll test
Patch by Dan Bailey
llvm-svn: 130353
2011-04-28 00:19:51 +00:00
638f0eb116
PTX: patch to AsmPrinter
...
- immediate value cast as long not int
- handles initializer for constant array
Patch by Dan Bailey
llvm-svn: 130352
2011-04-28 00:19:50 +00:00
1e34241abd
Reverting r130340 in the unlikely event that it's responsible for a llvm-gcc stage2 compiler error.
...
llvm-svn: 130350
2011-04-28 00:13:59 +00:00
8bd572fc58
fast-isel sret. We actually don't need to do anything special on x86. :) rdar://problem/9303592 .
...
llvm-svn: 130348
2011-04-27 23:58:52 +00:00
ce83fc3463
Remove unnecessary argument.
...
llvm-svn: 130343
2011-04-27 23:17:57 +00:00
08704349da
Rename getPersonalityPICSymbol to getCFIPersonalitySymbol, document it, and
...
give it a bit more responsibility. Also implement it for MachO.
If hacked to use cfi, 32 bit MachO will produce
.cfi_personality 155, L___gxx_personality_v0$non_lazy_ptr
and 64 bit will produce
.cfi_presonality ___gxx_personality_v0
The general idea is that .cfi_personality gets passed the final symbol. It is
up to codegen to produce it if using indirect representation (like 32 bit
MachO), but it is up to MC to decide which relocations to create.
llvm-svn: 130341
2011-04-27 23:08:15 +00:00
29ac7b8858
Fixes PR9730: indvars: An asserting value handle still pointed to this value
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Modified LinearFunctionTestReplace to push the condition on the dead
list instead of eagerly deleting it. This can cause unnecessary
IV rewrites, which should have no effect on codegen and will not be an
issue once we stop generating canonical IVs.
llvm-svn: 130340
2011-04-27 23:00:03 +00:00
77dc541b00
Simplify handling of variables with complex address (i.e. blocks variables)
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llvm-svn: 130339
2011-04-27 22:45:24 +00:00
406c471b69
Make the fast-isel code for literal 0.0 a bit shorter/faster, since 0.0 is common. rdar://problem/9303592 .
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llvm-svn: 130338
2011-04-27 22:41:55 +00:00
121d27e9e4
Remove unused function.
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llvm-svn: 130337
2011-04-27 22:21:02 +00:00
3989776770
Fix indentation.
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llvm-svn: 130331
2011-04-27 21:29:52 +00:00
886894cb70
Fix a bug in the case that there is no add or subtract symbol and the offset
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value is zero so it does not add a NULL expr operand.
llvm-svn: 130330
2011-04-27 21:02:27 +00:00
5394c70d1e
Teach BasicAA about arm.neon.vld1 and vst1.
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llvm-svn: 130327
2011-04-27 20:44:28 +00:00
e3745fdcf3
Revert r130178. It turned out to be not the optimal path to emit complex location expressions.
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llvm-svn: 130326
2011-04-27 20:29:27 +00:00
9808d31b9e
If converter was being too cute. It look for root BBs (which don't have
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successors) and use inverse depth first search to traverse the BBs. However
that doesn't work when the CFG has infinite loops. Simply do a linear
traversal of all BBs work just fine.
rdar://9344645
llvm-svn: 130324
2011-04-27 19:32:43 +00:00
39b3a1ef7f
When analyzing functions known to only access argument pointees,
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only check arguments with pointer types. Update the documentation
of IntrReadArgMem reflect this.
While here, add support for TBAA tags on intrinsic calls.
llvm-svn: 130317
2011-04-27 18:39:03 +00:00
7d1eea86d9
Corrects an old, old typo in a case that doesn't seem to be reached in practice.
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llvm-svn: 130316
2011-04-27 18:17:36 +00:00
12bf0ab4b5
Simplify cfg inserts a call to trap when unreachable code is detected. Assign DebugLoc to this new trap instruction.
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llvm-svn: 130315
2011-04-27 17:59:27 +00:00
71d3b895ba
Also add <imp-def> operands for defined and dead super-registers when rewriting.
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We cannot rely on the <imp-def> operands added by LiveIntervals in all cases as
demonstrated by the test case.
llvm-svn: 130313
2011-04-27 17:42:31 +00:00
27c0c9bb87
Factor a bit of code to MCStreamer::EmitLabel. Keep track of the last
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non private symbol. This will be use for handling
foo:
.cfi_startproc
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On OS X where we have to create a foo.eh symbol.
llvm-svn: 130305
2011-04-27 15:21:19 +00:00
085ad3b81a
Stop trying to have instcombine preserve LCSSA form: this was not
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effective in avoiding recomputation of LCSSA form; the widespread
use of instsimplify (which looks through phi nodes) means it was
not preserving LCSSA form anyway; and instcombine is no longer
scheduled in the middle of the loop passes so this doesn't matter
anymore.
llvm-svn: 130301
2011-04-27 10:55:12 +00:00
Tanya Lattner