3f8ecf5cc5
Revert r129688; it's breaking buildbots.
...
llvm-svn: 129689
2011-04-18 05:54:54 +00:00
2dc287a147
More malloc elimination: it's a bad idea to use raw_svector_ostream on a
...
small heap-allocated SmallString because it unconditionally forces a malloc.
llvm-svn: 129688
2011-04-18 05:38:58 +00:00
0e40208d7b
Make the StringMaps attached to MCContext use the MCContext's allocator;
...
reduces the number of calls to malloc().
llvm-svn: 129687
2011-04-18 05:02:31 +00:00
73a559fe93
Use an empty ArrayRef instead of an empty std::vector for the Function::get overload that takes no parameters.
...
llvm-svn: 129686
2011-04-18 04:55:06 +00:00
6483513a6d
docs: Redefine Heading elements as below;
...
H1 ... Title (and might be Chapter in future)
H2 ... Section
H3 ... Subsection
H4 ... Sub-subsection
llvm-svn: 129683
2011-04-18 01:17:51 +00:00
722f0ccdf9
introduce a new OpKind abstraction which wraps up operand flavors in a tidy little wrapper.
...
No functionality change.
llvm-svn: 129680
2011-04-17 23:29:05 +00:00
9080391b55
change OperandsSignature to use SmallVector<char> instead of std::vector<string>
...
since the strings are always exactly one character, and there are usually only 2-3 operands.
llvm-svn: 129678
2011-04-17 22:24:13 +00:00
0d7a5a7daa
since the VT is fixed for a ImmLeaf, there is no reason to expose it to the matching code.
...
llvm-svn: 129677
2011-04-17 22:17:27 +00:00
c479e0631f
switch the rest of the x86 immediate patterns over to ImmLeaf,
...
simplifying them and exposing more information to tblgen. It would be nice
if other target authors adopted this as well, particularly arm since it has fastisel.
llvm-svn: 129676
2011-04-17 22:12:55 +00:00
2ff8c1a25f
now that predicates have a decent abstraction layer on them, introduce a new
...
kind of predicate: one that is specific to imm nodes. The predicate function
specified here just checks an int64_t directly instead of messing around with
SDNode's. The virtue of this is that it means that fastisel and other things
can reason about these predicates.
llvm-svn: 129675
2011-04-17 22:05:17 +00:00
514e292b72
Rework our internal representation of node predicates to expose more
...
structure and fix some fixmes. We now have a TreePredicateFn class
that handles all of the decoding of these things. This is an internal
cleanup that has no impact on the code generated by tblgen.
llvm-svn: 129670
2011-04-17 21:38:24 +00:00
4604bddc07
remove some debugging code I added.
...
llvm-svn: 129668
2011-04-17 21:36:19 +00:00
b53ccb8e36
1. merge fast-isel-shift-imm.ll into fast-isel-x86-64.ll
...
2. implement rdar://9289501 - fast isel should fold trivial multiplies to shifts
3. teach tblgen to handle shift immediates that are different sizes than the
shifted operands, eliminating some code from the X86 fast isel backend.
4. Have FastISel::SelectBinaryOp use (the poorly named) FastEmit_ri_ function
instead of FastEmit_ri to simplify code.
llvm-svn: 129666
2011-04-17 20:23:29 +00:00
eb729d48ff
fix an x86 fast isel issue where we'd completely give up on folding an address
...
when we have a global variable base an an index. Instead, just give up on
folding the global variable.
Before we'd geenrate:
_test: ## @test
## BB#0:
movq _rtx_length@GOTPCREL(%rip), %rax
leaq (%rax), %rax
addq %rdi, %rax
movzbl (%rax), %eax
ret
now we generate:
_test: ## @test
## BB#0:
movq _rtx_length@GOTPCREL(%rip), %rax
movzbl (%rax,%rdi), %eax
ret
The difference is even more significant when there is a scale
involved.
This fixes rdar://9289558 - total fail with addr mode formation at -O0/x86-64
llvm-svn: 129664
2011-04-17 17:47:38 +00:00
4832660b4d
fix an oversight which caused us to compile the testcase (and other
...
less trivial things) into a dummy lea. Before we generated:
_test: ## @test
movq _G@GOTPCREL(%rip), %rax
leaq (%rax), %rax
ret
now we produce:
_test: ## @test
movq _G@GOTPCREL(%rip), %rax
ret
This is part of rdar://9289558
llvm-svn: 129662
2011-04-17 17:12:08 +00:00
4b026b962a
tidy up and reduce indentation.
...
llvm-svn: 129661
2011-04-17 17:05:12 +00:00
045c43855c
Fix rdar://9289512 - not folding load into compare at -O0
...
The basic issue here is that bottom-up isel is matching the branch
and compare, and was failing to fold the load into the branch/compare
combo. Fixing this (by allowing folding into any instruction of a
sequence that is selected) allows us to produce things like:
cmpb $0, 52(%rax)
je LBB4_2
instead of:
movb 52(%rax), %cl
cmpb $0, %cl
je LBB4_2
This makes the generated -O0 code run a bit faster, but also speeds up
compile time by putting less pressure on the register allocator and
generating less code.
This was one of the biggest classes of missing load folding. Implementing
this shrinks 176.gcc's c-decl.s (as a random example) by about 4% in (verbose-asm)
line count.
llvm-svn: 129656
2011-04-17 06:35:44 +00:00
d70ff0d807
split a complex predicate out to a helper function. Simplify two for loops,
...
which don't need to check for falling off the end of a block *and* end of phi
nodes, since terminators are never phis.
llvm-svn: 129655
2011-04-17 06:03:19 +00:00
55f7bf3289
Remove working entry from README.
...
llvm-svn: 129654
2011-04-17 02:36:27 +00:00
fba7ca63cc
fix rdar://9289583 - fast isel should handle non-canonical commutative binops
...
allowing us to fold the immediate into the 'and' in this case:
int test1(int i) {
return 8&i;
}
llvm-svn: 129653
2011-04-17 01:16:47 +00:00
55b0acd624
PR9055: extend the fix to PR4050 (r70179) to apply to zext and anyext.
...
Returning a new node makes the code try to replace the old node, which
in the included testcase is killed by CSE.
llvm-svn: 129650
2011-04-16 23:25:34 +00:00
d6d4f987b4
Rename a misleadingly-named variable.
...
llvm-svn: 129644
2011-04-16 14:32:34 +00:00
d097212a08
Add test cases for Jay's r129641 and fix a 32-bit-centric testcase in a file with a 64-bit datalayout.
...
llvm-svn: 129643
2011-04-16 14:31:50 +00:00
beb17d9359
Unbreak the MSVC 2010 build.
...
For further information on this particular issue see: http://connect.microsoft.com/VisualStudio/feedback/details/520043/error-converting-from-null-to-a-pointer-type-in-std-pair
llvm-svn: 129642
2011-04-16 14:20:39 +00:00
7d03e9be47
Fix bug when checking phi operands in InstCombiner::visitPHINode(),
...
found by code inspection.
llvm-svn: 129641
2011-04-16 14:17:37 +00:00
47f86e6c60
MSVC needs the return 0 to compile.
...
llvm-svn: 129640
2011-04-16 13:59:23 +00:00
659bfb34ff
Remove unused variable.
...
llvm-svn: 129639
2011-04-16 10:30:47 +00:00
c186dcf2c5
Write out uint64_t as i{0..32},i{33..64} instead of i{0..32},0.
...
llvm-svn: 129638
2011-04-16 10:25:32 +00:00
303b5e21fc
Don't use C++ comments in C code.
...
llvm-svn: 129637
2011-04-16 04:25:36 +00:00
a83b177035
Put each personality function in a section. This fixes the gnu ld warning:
...
error in foo.o; no .eh_frame_hdr table will be created.
llvm-svn: 129635
2011-04-16 03:51:21 +00:00
ebddfe60a0
Correct result when a branch condition is live across a block
...
boundary. <rdar://problem/8933028>
llvm-svn: 129634
2011-04-16 03:31:26 +00:00
b14ce09fca
Fix divmod libcall lowering. Convert to {S|U}DIVREM first and then expand the node to a libcall. rdar://9280991
...
llvm-svn: 129633
2011-04-16 03:08:26 +00:00
c715e724de
Fix cmake build.
...
llvm-svn: 129632
2011-04-16 02:06:46 +00:00
c5ea8528cc
Move the re-stemming function up top and use it where it's currently inlined.
...
Break the arc-profile code out to a function like the notes emission code is,
and reorder the functions in the file.
The only functionality change is that we no longer modify the Module when the
Module has no debug info to use.
llvm-svn: 129631
2011-04-16 02:05:18 +00:00
966edd068f
Rename LineProfiling to GCOVProfiling to more accurately represent what it
...
does. Also mostly implement it. Still a work-in-progress, but generates legal
output on crafted test cases.
llvm-svn: 129630
2011-04-16 01:20:23 +00:00
514b4006c2
Introduce support to encode Objective-C property information in debugging information generated for an interface.
...
llvm-svn: 129624
2011-04-16 00:11:51 +00:00
48592ee5af
Thumb2 BFC was insufficiently encoded.
...
rdar://problem/9292717
llvm-svn: 129619
2011-04-15 22:52:15 +00:00
761e1e3512
A8.6.315 VLD3 (single 3-element structure to all lanes)
...
The a bit must be encoded as 0.
rdar://problem/9292625
llvm-svn: 129618
2011-04-15 22:49:08 +00:00
2cb3aa30dd
Re-enable test o32_cc_vararg.ll.
...
llvm-svn: 129616
2011-04-15 22:23:09 +00:00
f29216072e
Initial work to improve documentation for Clang's diagnostics, from Matthieu Monrocq
...
llvm-svn: 129613
2011-04-15 22:04:07 +00:00
e24891251c
Reverse unnecessary changes made in r129606 and r129608. There is no change in functionality.
...
llvm-svn: 129612
2011-04-15 21:51:11 +00:00
9c65e4d69c
Add ORR and EOR to the CMP peephole optimizer. It's hard to get isel to generate
...
a case involving EOR, so I only added a test for ORR.
llvm-svn: 129610
2011-04-15 21:24:38 +00:00
b92fbb7036
Fix some broken links, from Matthieu Monrocq
...
llvm-svn: 129609
2011-04-15 21:21:31 +00:00
d56f2d910b
Fix lines that exceed 80 columns. There is no change in functionality.
...
llvm-svn: 129608
2011-04-15 21:06:38 +00:00
9fef721830
Add this test back for Darwin.
...
llvm-svn: 129607
2011-04-15 21:06:27 +00:00
aef55c8801
Fix lines that have incorrect indentation or exceed 80 columns. There is no change in functionality.
...
llvm-svn: 129606
2011-04-15 21:00:26 +00:00
0829b3065a
The AND instruction leaves the V flag unmodified, so it falls victim to the same
...
problem as all of the other instructions we fold with CMPs.
llvm-svn: 129602
2011-04-15 20:45:00 +00:00
7583dbdc88
Fix cmake build.
...
llvm-svn: 129601
2011-04-15 20:34:45 +00:00
beb74c3f00
Some refactoring suggested by Anton Korobeynikov.
...
llvm-svn: 129600
2011-04-15 20:32:03 +00:00
93eae1571c
Add missing register forms of instructions to the ARM CMP-folding code. This
...
fixes <rdar://problem/9287901>.
llvm-svn: 129599
2011-04-15 20:28:28 +00:00
279169771b
Add pass that expands pseudo instructions into target instructions after register allocation. Define pseudos that get expanded into mtc1 or mfc1 instructions.
...
llvm-svn: 129594
2011-04-15 19:52:08 +00:00
a2e61292f0
Increase SubtargetFeatureKV Value and Implies fields to 64 bits since some targets are getting very close to 32 subtarget features. Also teach tablegen to error when there are more than 64 features to guard against undefined behavior. rdar://9282332
...
llvm-svn: 129590
2011-04-15 19:35:46 +00:00
375249a417
Add encoding tests for flds/filds
...
llvm-svn: 129589
2011-04-15 19:25:31 +00:00
fad9d95722
Implements StringRef::compare with bounds. It is behaves similarly to strncmp(). Unit tests also included.
...
llvm-svn: 129582
2011-04-15 17:56:50 +00:00
1af8b4dc92
Teach the SplitKit blitter to handle multiply defined values as well.
...
The transferValues() function can now handle both singly and multiply defined
values, as long as the resulting live range is known. Only rematerialized values
have their live range recomputed by extendRange().
The updateSSA() function can now insert PHI values in bulk across multiple
values in multiple target registers in one pass. The list of blocks received
from transferValues() is in layout order which seems to work well for the
iterative algorithm. Blocks from extendRange() are still in reverse BFS order,
but this function is used so rarely now that it doesn't matter.
llvm-svn: 129580
2011-04-15 17:24:49 +00:00
871f70609a
Remember to set flag.
...
llvm-svn: 129579
2011-04-15 17:24:46 +00:00
a01cdb0e37
Add 129518 back with a fix for when we are producing eh just because of debug info.
...
Change ELF systems to use CFI for producing the EH tables. This reduces the
size of the clang binary in Debug builds from 690MB to 679MB.
llvm-svn: 129571
2011-04-15 15:11:06 +00:00
0ab5e2cded
Fix a ton of comment typos found by codespell. Patch by
...
Luis Felipe Strano Moraes!
llvm-svn: 129558
2011-04-15 05:18:47 +00:00
b5e3e9dd27
Revert r129518, "Change ELF systems to use CFI for producing the EH tables. This reduces the"
...
It broke several builds.
llvm-svn: 129557
2011-04-15 03:35:57 +00:00
12bb05b75b
Fix another fcopysign lowering bug. If src is f64 and destination is f32, don't
...
forget to right shift the source by 32 first. rdar://9287902
llvm-svn: 129556
2011-04-15 01:31:00 +00:00
681fef5986
For t2BFI, both Inst{26} and Inst{5} "should" be 0.
...
Ref: I.1 Instruction encoding diagrams and pseudocode
llvm-svn: 129552
2011-04-15 00:35:08 +00:00
30088ba110
Add 3DNow! intrinsics.
...
llvm-svn: 129551
2011-04-15 00:32:41 +00:00
421316178e
The ARM disassembler did not handle the alignment correctly for VLD*DUP* instructions
...
(single element or n-element structure to all lanes).
llvm-svn: 129550
2011-04-15 00:10:45 +00:00
44887f9c7e
Follow up on r127913. Fix Thumb revsh isel. rdar://9286766
...
llvm-svn: 129548
2011-04-14 23:27:44 +00:00
2395626605
Add an instcombine for constructs like a | -(b != c); a select is more
...
canonical, and generally leads to better code. Found while looking at
an article about saturating arithmetic.
llvm-svn: 129545
2011-04-14 22:41:27 +00:00
92651ec374
Fix an infinite alternation in JumpThreading where two transforms would repeatedly undo each other. The solution is to perform more aggressive constant folding to make one of the edges just folded away rather than trying to thread it.
...
Fixes <rdar://problem/9284786>.
Discovered with CSmith.
llvm-svn: 129538
2011-04-14 21:35:50 +00:00
1cde91674a
Cleanup r129509 based on comments by Chris
...
llvm-svn: 129532
2011-04-14 19:20:42 +00:00
4251b151b1
Add sanity checkings for Thumb2 Load/Store Register Exclusive family of operations.
...
llvm-svn: 129531
2011-04-14 19:13:28 +00:00
6f195469b1
move PR9661 out to here.
...
llvm-svn: 129527
2011-04-14 18:47:18 +00:00
a519284fec
Fix another instance of the DAG combiner not using the correct type for the RHS of a shift.
...
llvm-svn: 129522
2011-04-14 17:30:49 +00:00
76b4ceb897
tests: Remove a FrontendC test which is no longer valid.
...
llvm-svn: 129519
2011-04-14 15:21:16 +00:00
aa2a7cd828
Change ELF systems to use CFI for producing the EH tables. This reduces the
...
size of the clang binary in Debug builds from 690MB to 679MB.
llvm-svn: 129518
2011-04-14 15:18:53 +00:00
b88784c185
Fix whitespace and tabs.
...
llvm-svn: 129517
2011-04-14 14:33:36 +00:00
0f6bad7b6e
Cleanup r129472 by using a utility routine as suggested by Eli.
...
llvm-svn: 129509
2011-04-14 08:04:01 +00:00
bfbd972b1f
In the pre-RA scheduler, maintain cmp+br proximity.
...
This is done by pushing physical register definitions close to their
use, which happens to handle flag definitions if they're not glued to
the branch. This seems to be generally a good thing though, so I
didn't need to add a target hook yet.
The primary motivation is to generate code closer to what people
expect and rule out missed opportunity from enabling macro-op
fusion. As a side benefit, we get several 2-5% gains on x86
benchmarks. There is one regression:
SingleSource/Benchmarks/Shootout/lists slows down be -10%. But this is
an independent scheduler bug that will be tracked separately.
See rdar://problem/9283108.
Incidentally, pre-RA scheduling is only half the solution. Fixing the
later passes is tracked by:
<rdar://problem/8932804> [pre-RA-sched] on x86, attempt to schedule CMP/TEST adjacent with condition jump
Fixes:
<rdar://problem/9262453> Scheduler unnecessary break of cmp/jump fusion
llvm-svn: 129508
2011-04-14 05:15:06 +00:00
d175c98d41
Documented bugpoint --compile-custom --compile-command.
...
I've used it a few times to reduce unit tests and gotten one request for information on it. It's not easy to use correctly because bugpoint doesn't tell you when you're doing it wrong.
llvm-svn: 129507
2011-04-14 05:05:36 +00:00
1d313c6f6d
add a minor missed dag combine that is blocking mid-level optimization
...
improvements, that will lead to fixing PR6627.
llvm-svn: 129504
2011-04-14 04:21:42 +00:00
493b3e72f2
sink a call into its only use.
...
llvm-svn: 129503
2011-04-14 04:12:47 +00:00
fba5cdfce1
rework FoldBranchToCommonDest to exit earlier when there is a bonus
...
instruction around, reducing work.
Greatly simplify handling of debug instructions. There is no need to
build up a vector of them and then move them into the one predecessor
if we're processing a block. Instead just rescan the block and *copy*
them into the pred. If a block gets merged into multiple preds, this
will retain more debug info.
llvm-svn: 129502
2011-04-14 02:44:53 +00:00
35a65b2aa6
fix a couple -Wsign-compare warnings.
...
llvm-svn: 129501
2011-04-14 02:27:25 +00:00
410ec4aad1
As Dan pointed out, movzbl, movsbl, and friends are nicer than their alias
...
(movzx/movsx) because they give more information. Revert that part of the patch.
llvm-svn: 129498
2011-04-14 01:46:37 +00:00
7e07d6fb69
Have the X86 back-end emit the alias instead of what's being aliased. In most
...
cases, it's much nicer and more informative reading the alias.
llvm-svn: 129497
2011-04-14 01:11:51 +00:00
6dd69d9241
Add an option to not print the alias of an instruction. It defaults to "print
...
the alias".
llvm-svn: 129485
2011-04-13 23:36:21 +00:00
9c12834eed
During post-legalization DAG combining, be careful to only create shifts where the RHS is of the legal type for the new operation.
...
llvm-svn: 129484
2011-04-13 23:22:23 +00:00
d0fb04f437
Thumb disassembler did not handle tBRIND (indirect branch) properly.
...
rdar://problem/9280370
llvm-svn: 129480
2011-04-13 21:59:01 +00:00
2e5528f0b2
Vectors with different number of elements of the same element type can have
...
the same allocation size but different primitive sizes(e.g., <3xi32> and
<4xi32>). When ScalarRepl promotes them, it can't use a bit cast but
should use a shuffle vector instead.
llvm-svn: 129472
2011-04-13 21:40:02 +00:00
b6a37bff21
Check for unallocated instruction encodings when disassembling Thumb Branch instructions (tBcc and t2Bcc).
...
rdar://problem/9280470
llvm-svn: 129471
2011-04-13 21:35:49 +00:00
ffa6378fd6
The LDR*T/STR*T (unpriviledged load/store) operations don't take SP or PC as Rt.
...
rdar://problem/9279440
llvm-svn: 129469
2011-04-13 21:04:32 +00:00
415b5e8341
Fix a typo in an ARM-specific DAG combine. This fixes <rdar://problem/9278274>.
...
llvm-svn: 129468
2011-04-13 21:01:19 +00:00
aabc142fce
Fix format string warning.
...
llvm-svn: 129467
2011-04-13 20:41:43 +00:00
9398197ef1
Fix a regression caused by r102515 where explicit alignment on globals is
...
ignored. There was a test to catch this, but it was just blindly updated in
a large change. This fixes another part of <rdar://problem/9275290>.
llvm-svn: 129466
2011-04-13 20:36:04 +00:00
2772f662da
Fix debug message.
...
llvm-svn: 129463
2011-04-13 19:47:41 +00:00
70591cbc60
Check the corner cases for t2LDRSHi12 correctly and mark invalid encodings as such.
...
rdar://problem/9276651
llvm-svn: 129462
2011-04-13 19:46:05 +00:00
e141234940
Remove extra bytes that were added for gdb. We do not have good poiner to understand actual reason behind this fixme. Spot checking suggest that newer gdb does not need this.
...
llvm-svn: 129461
2011-04-13 19:41:17 +00:00
58d11415c1
Use positive values since the value type is unsigned. Fixes a warning on the
...
llvm-gcc-native-mingw32 builder.
llvm-svn: 129457
2011-04-13 18:46:22 +00:00
0d306a7840
Fix a bug where for t2MOVCCi disassembly, the TIED_TO register operand was not properly handled.
...
rdar://problem/9276427
llvm-svn: 129456
2011-04-13 17:51:02 +00:00
b2f9fa1fce
Forgot to add this change for http://llvm.org/viewvc/llvm-project?view=rev&revision=129387 .
...
llvm-svn: 129451
2011-04-13 16:56:08 +00:00
377cc31a74
Fixed the revision 129449.
...
llvm-svn: 129450
2011-04-13 16:45:49 +00:00
7c3b4593b5
Passing unroll parameters (unroll-count, threshold, and partial unroll) via LoopUnroll class's ctor. Doing so
...
will allow multiple context with different loop unroll parameters to run. This is a minor change and no effect
on existing application.
llvm-svn: 129449
2011-04-13 16:15:29 +00:00
7cb41d787d
Load multiple object files and link them via RuntimeDyld in llvm-rtdyld.
...
Relocations between the object modules are properly resolved, as in the
following trivial example:
$ cat t.c
int foo();
int main() {
return foo();
}
$ cat foo.c
int foo() {
return 65;
}
$ clang -c t.c -fno-asynchronous-unwind-tables
$ clang -c foo.c -fno-asynchronous-unwind-tables
$ llvm-rtdyld t.o foo.o ; echo $?
loaded '_main' at: 0x10015c000
65
llvm-svn: 129448
2011-04-13 15:49:40 +00:00
Eli Friedman