2ae93b2c9c
Remove second return.
...
llvm-svn: 122616
2010-12-29 02:42:33 +00:00
563301dfdb
Fix bug when trying to output uint16_t or uint32_t.
...
llvm-svn: 122615
2010-12-29 02:30:49 +00:00
290d71671e
Implement cfi_def_cfa. Also don't convert to dwarf reg numbers twice. Looks
...
like 6 is a fixed point of that and so the previous tests were OK :-)
llvm-svn: 122614
2010-12-29 01:42:56 +00:00
1be1fe033c
fix PR8867: a crash handling fp128. Thanks to Nick for the testcase.
...
llvm-svn: 122613
2010-12-29 01:33:36 +00:00
426e68f793
Implement cfi_def_cfa_register.
...
llvm-svn: 122612
2010-12-29 00:26:06 +00:00
86d347dd31
Initial .cfi_offset implementation.
...
llvm-svn: 122611
2010-12-29 00:09:59 +00:00
6fe33fdd63
Simplify some code in MachineVerifier that was doing the correct thing, but not
...
in the most obvious way.
llvm-svn: 122610
2010-12-28 23:45:38 +00:00
6bbfb6c06c
Don't produce a "DW_CFA_advance_loc 0".
...
llvm-svn: 122609
2010-12-28 23:38:03 +00:00
146666eabb
Revert the optimization in r122596. It is correct for all current targets, but
...
it relies on assumptions that may not be true in the future.
llvm-svn: 122608
2010-12-28 23:02:56 +00:00
2f15503d5a
Multiple SPARC backend fixes: added Y register; updated select_cc, subx, subxcc defs/uses;
...
and fixed CustomInserter.
llvm-svn: 122607
2010-12-28 20:39:17 +00:00
4c8c95b099
Integers are primitive types. Update the documentation to state this
...
This was done for label, void, floating point, x86mmx, metadata,
just not integer.
llvm-svn: 122606
2010-12-28 20:29:31 +00:00
65a699d4d0
simplify this, isBytewiseValue handles the extra check. We still
...
check for "multiple of a byte" in size to make it clear that the
>> 3 below is safe.
llvm-svn: 122604
2010-12-28 18:53:48 +00:00
102bc01900
add a note from llvmdev
...
llvm-svn: 122603
2010-12-28 18:45:02 +00:00
85d91982ca
Implement .cfi_remember_state and .cfi_restore_state.
...
llvm-svn: 122602
2010-12-28 18:36:23 +00:00
1f22457975
Clarify that InstructionSimplify only returns values that dominate the
...
original instruction.
llvm-svn: 122601
2010-12-28 18:01:19 +00:00
c6fa6d25ab
Small optimization to speed up replacementPreservesLCSSAForm.
...
llvm-svn: 122600
2010-12-28 18:00:24 +00:00
b6d52b8b64
Cast away "comparison between signed and unsigned integer" warnings.
...
llvm-svn: 122598
2010-12-28 13:52:52 +00:00
110442d8a0
Fix a signed/unsigned comparison warning.
...
llvm-svn: 122597
2010-12-28 13:05:13 +00:00
92f6e4290c
Avoid iterating every operand of an instruction in StrongPHIElimination, since
...
we are only interested in the defs when discovering interferences.
This is a 28% speedup running StrongPHIElimination on 403.gcc.
llvm-svn: 122596
2010-12-28 10:49:33 +00:00
496770debc
Pacify the compiler. BestWeight cannot in fact be used uninitialized
...
in this function, but the compiler was warning that it might be when
doing a release build.
llvm-svn: 122595
2010-12-28 10:07:15 +00:00
3784c5ea3c
Fix warning about size potentially being used uninitialized
...
when doing a release build.
llvm-svn: 122594
2010-12-28 10:02:42 +00:00
5cf10e691b
Silence gcc warning about an unused variable when doing a release build.
...
llvm-svn: 122593
2010-12-28 09:41:15 +00:00
736a35d9ab
Relax address updates in the eh_frame section.
...
llvm-svn: 122591
2010-12-28 05:39:27 +00:00
a75b87b55a
Start adding basic support for emitting the call frame instructions.
...
llvm-svn: 122590
2010-12-28 04:15:37 +00:00
c581fe7e81
Support/Path: Deprecate Path::hasMagicNumber and replace all uses with fs::has_magic.
...
llvm-svn: 122589
2010-12-28 01:49:21 +00:00
9d1419841a
Fix typo.
...
llvm-svn: 122588
2010-12-28 01:49:10 +00:00
848f46bb84
Support/PathV2: Implement has_magic.
...
llvm-svn: 122587
2010-12-28 01:49:01 +00:00
5e5cfbe871
Change an assertion to assert what the code actually relies upon.
...
llvm-svn: 122586
2010-12-27 22:08:42 +00:00
cb18bfa3d2
fix some issues Frits noticed, add AliasAnalysis as a dependency
...
llvm-svn: 122585
2010-12-27 18:39:08 +00:00
1de2dd0e5e
Add support for .cfi_lsda.
...
llvm-svn: 122584
2010-12-27 15:56:22 +00:00
a895c69431
MC/Mach-O/Thumb: Select appropriate relocation types for Thumb.
...
llvm-svn: 122583
2010-12-27 14:49:49 +00:00
25d046ce68
Land a first cut at StrongPHIElimination. There are only 5 new test failures
...
when running without the verifier, and I have not yet checked them to see if
the new results are still correct. There are more verifier failures, but they
all seem to be additional occurrences of verifier failures that occur with the
existing PHIElimination pass. There are a few obvious issues with the code:
1) It doesn't properly update the register equivalence classes during copy
insertion, and instead recomputes them before merging live intervals and
renaming registers. I wanted to keep this first patch simple for debugging
purposes, but it shouldn't be very hard to do this.
2) It doesn't mix the renaming and live interval merging with the copy insertion
process, which leads to a lot of virtual register churn. Virtual registers and
live intervals are created, only to later be merged into others. The code should
be smarter and only create a new virtual register if there is no existing
register in the same congruence class.
3) In one place the code uses a DenseMap per basic block, which is unnecessary
heap allocation. There should be an inline storage version of DenseMap.
I did a quick compile-time test of running llc on 403.gcc with and without
StrongPHIElimination. It is slightly slower with StrongPHIElimination, because
the small decrease in the coalescer runtime can't beat the increase in phi
elimination runtime. Perhaps fixing the above performance issues will narrow
the gap.
I also haven't yet run any tests of the quality of the generated code.
llvm-svn: 122582
2010-12-27 10:08:19 +00:00
b95bfe1667
Add knowledge of phi-def and phi-kill valnos to MachineVerifier's predecessor
...
valno verification. The "Different value live out of predecessor" check is
incorrect in the case of phi-def valnos, so just skip that check for phi-def
valnos and instead check that all of the valnos for predecessors have phi-kill.
Fixes PR8863.
llvm-svn: 122581
2010-12-27 05:17:23 +00:00
9e590024f6
Support/PathV1: Deprecate GetRootDirectory.
...
llvm-svn: 122580
2010-12-27 03:21:41 +00:00
8fc59a682f
Handle reloc_riprel_4byte_movq_load. Should make the bots happy.
...
llvm-svn: 122579
2010-12-27 02:03:24 +00:00
2ac8355ecd
Add support for the same encodings of the personality function that gnu as
...
supports.
llvm-svn: 122577
2010-12-27 00:36:05 +00:00
84bd73c527
BuildLibCalls: Nuke EmitMemCpy, EmitMemMove and EmitMemSet. They are dead and superseded by IRBuilder.
...
llvm-svn: 122576
2010-12-27 00:25:32 +00:00
7cba269dfb
SimplifyLibCalls: Use IRBuilder to simplify code.
...
llvm-svn: 122575
2010-12-27 00:16:46 +00:00
b9fe685b9a
have loop-idiom nuke instructions that feed stores that get removed.
...
llvm-svn: 122574
2010-12-27 00:03:23 +00:00
29e14edc8d
implement enough of the memset inference algorithm to recognize and insert
...
memsets. This is still missing one important validity check, but this is enough
to compile stuff like this:
void test0(std::vector<char> &X) {
for (std::vector<char>::iterator I = X.begin(), E = X.end(); I != E; ++I)
*I = 0;
}
void test1(std::vector<int> &X) {
for (long i = 0, e = X.size(); i != e; ++i)
X[i] = 0x01010101;
}
With:
$ clang t.cpp -S -o - -O2 -emit-llvm | opt -loop-idiom | opt -O3 | llc
to:
__Z5test0RSt6vectorIcSaIcEE: ## @_Z5test0RSt6vectorIcSaIcEE
## BB#0: ## %entry
subq $8, %rsp
movq (%rdi), %rax
movq 8(%rdi), %rsi
cmpq %rsi, %rax
je LBB0_2
## BB#1: ## %bb.nph
subq %rax, %rsi
movq %rax, %rdi
callq ___bzero
LBB0_2: ## %for.end
addq $8, %rsp
ret
...
__Z5test1RSt6vectorIiSaIiEE: ## @_Z5test1RSt6vectorIiSaIiEE
## BB#0: ## %entry
subq $8, %rsp
movq (%rdi), %rax
movq 8(%rdi), %rdx
subq %rax, %rdx
cmpq $4, %rdx
jb LBB1_2
## BB#1: ## %for.body.preheader
andq $-4, %rdx
movl $1, %esi
movq %rax, %rdi
callq _memset
LBB1_2: ## %for.end
addq $8, %rsp
ret
llvm-svn: 122573
2010-12-26 23:42:51 +00:00
6cf8d6cc6e
start using irbuilder to make mem intrinsics in a few passes.
...
llvm-svn: 122572
2010-12-26 22:57:41 +00:00
143a07cfee
add methods to IRBuilder to create memcpy/memset/memmove.
...
llvm-svn: 122571
2010-12-26 22:49:25 +00:00
54462cd730
Fix .cfi_personality on 32 bit systems.
...
llvm-svn: 122570
2010-12-26 22:47:37 +00:00
9ae2d05d45
Add support for @note. Patch by Jörg Sonnenberger.
...
llvm-svn: 122568
2010-12-26 21:30:59 +00:00
7c5f9c35d1
sketch more of this out.
...
llvm-svn: 122567
2010-12-26 20:45:45 +00:00
9141b611ad
Add basic support for .cfi_personality.
...
llvm-svn: 122566
2010-12-26 20:20:31 +00:00
9cb1035f94
move isBytewiseValue out to ValueTracking.h/cpp
...
llvm-svn: 122565
2010-12-26 20:15:01 +00:00
81ae3f299a
actually add the file...
...
llvm-svn: 122563
2010-12-26 19:39:38 +00:00
2ef535a4e4
Start of a pass for recognizing memset and memcpy idioms.
...
No functionality yet.
llvm-svn: 122562
2010-12-26 19:32:44 +00:00
30342fb1fd
Simplify code.
...
llvm-svn: 122561
2010-12-26 15:23:45 +00:00
Rafael Espindola