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Author SHA1 Message Date
Chris Lattner
0a1c997c27 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129664 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-17 17:47:38 +00:00
Chris Lattner
685090f598 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



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129662 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-17 17:12:08 +00:00
Chris Lattner
dceb52a01b tidy up and reduce indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129661 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-17 17:05:12 +00:00
Chris Lattner
fd3f635103 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129656 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-17 06:35:44 +00:00
Chris Lattner
8bdc251dc5 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129655 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-17 06:03:19 +00:00
Eli Friedman
2f108f81c1 Remove working entry from README. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129654 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-17 02:36:27 +00:00
Chris Lattner
fff65b354f 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;
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129653 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-17 01:16:47 +00:00
Eli Friedman
e545d38a28 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129650 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 23:25:34 +00:00
Frits van Bommel
86f72a8002 Rename a misleadingly-named variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129644 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 14:32:34 +00:00
Frits van Bommel
338af5e749 Add test cases for Jay's r129641 and fix a 32-bit-centric testcase in a file with a 64-bit datalayout. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129643 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 14:31:50 +00:00
Francois Pichet
cbc5f407ef 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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129642 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 14:20:39 +00:00
Jay Foad
4130278fbe Fix bug when checking phi operands in InstCombiner::visitPHINode(), 
found by code inspection.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129641 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 14:17:37 +00:00
Francois Pichet
6144686af6 MSVC needs the return 0 to compile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129640 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 13:59:23 +00:00
Benjamin Kramer
e5060984aa Remove unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129639 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 10:30:47 +00:00
Benjamin Kramer
571c0e95fa Write out uint64_t as i{0..32},i{33..64} instead of i{0..32},0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129638 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 10:25:32 +00:00
Nick Lewycky
ece78a30bd Don't use C++ comments in C code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129637 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 04:25:36 +00:00
Rafael Espindola
30deafc84a 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129635 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 03:51:21 +00:00
Stuart Hastings
c5eecbc4ec Correct result when a branch condition is live across a block 
boundary.  <rdar://problem/8933028>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129634 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 03:31:26 +00:00
Evan Cheng
65279cb9bd Fix divmod libcall lowering. Convert to {S|U}DIVREM first and then expand the node to a libcall. rdar://9280991 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129633 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 03:08:26 +00:00
Rafael Espindola
86837e8745 Fix cmake build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129632 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 02:06:46 +00:00
Nick Lewycky
0c4de8a4eb 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129631 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 02:05:18 +00:00
Nick Lewycky
b192870420 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129630 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 01:20:23 +00:00
Devang Patel
e9db5e29e3 Introduce support to encode Objective-C property information in debugging information generated for an interface. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129624 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 00:11:51 +00:00
Johnny Chen
3a96122c4a Thumb2 BFC was insufficiently encoded. 
rdar://problem/9292717


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129619 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 22:52:15 +00:00
Johnny Chen
a704bc9354 A8.6.315 VLD3 (single 3-element structure to all lanes) 
The a bit must be encoded as 0.

rdar://problem/9292625


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129618 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 22:49:08 +00:00
Akira Hatanaka
fc693036a4 Re-enable test o32_cc_vararg.ll. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129616 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 22:23:09 +00:00
Douglas Gregor
4954e9f2d9 Initial work to improve documentation for Clang's diagnostics, from Matthieu Monrocq 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129613 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 22:04:07 +00:00
Akira Hatanaka
4552c9a3b3 Reverse unnecessary changes made in r129606 and r129608. There is no change in functionality. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129612 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 21:51:11 +00:00
Cameron Zwarich
0cb11ac32f 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129610 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 21:24:38 +00:00
Douglas Gregor
3e03e5d2a9 Fix some broken links, from Matthieu Monrocq 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129609 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 21:21:31 +00:00
Akira Hatanaka
6c3541d559 Fix lines that exceed 80 columns. There is no change in functionality. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129608 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 21:06:38 +00:00
Rafael Espindola
27c4ba16ae Add this test back for Darwin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129607 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 21:06:27 +00:00
Akira Hatanaka
0bf3dfbef6 Fix lines that have incorrect indentation or exceed 80 columns. There is no change in functionality. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129606 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 21:00:26 +00:00
Cameron Zwarich
b485de5d8c 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129602 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 20:45:00 +00:00
Rafael Espindola
ed7cd9610a Fix cmake build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129601 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 20:34:45 +00:00
Rafael Espindola
126ae68152 Some refactoring suggested by Anton Korobeynikov. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129600 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 20:32:03 +00:00
Cameron Zwarich
ca3f6a3925 Add missing register forms of instructions to the ARM CMP-folding code. This 
fixes <rdar://problem/9287901>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129599 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 20:28:28 +00:00
Akira Hatanaka
99a2e98edd Add pass that expands pseudo instructions into target instructions after register allocation. Define pseudos that get expanded into mtc1 or mfc1 instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129594 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 19:52:08 +00:00
Evan Cheng
b6a638898a 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 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129590 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 19:35:46 +00:00
Joerg Sonnenberger
c25e8d8cea Add encoding tests for flds/filds 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129589 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 19:25:31 +00:00
Lenny Maiorani
437ef0cfb7 Implements StringRef::compare with bounds. It is behaves similarly to strncmp(). Unit tests also included. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129582 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 17:56:50 +00:00
Jakob Stoklund Olesen
44b7ae2355 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129580 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 17:24:49 +00:00
Jakob Stoklund Olesen
806562cc59 Remember to set flag. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129579 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 17:24:46 +00:00
Rafael Espindola
f0adba9a7e 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129571 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 15:11:06 +00:00
Chris Lattner
7a2bdde0a0 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 05:18:47 +00:00
NAKAMURA Takumi
bcb8c6d09e Revert r129518, "Change ELF systems to use CFI for producing the EH tables. This reduces the" 
It broke several builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129557 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 03:35:57 +00:00
Evan Cheng
9eec66e604 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129556 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 01:31:00 +00:00
Johnny Chen
188ce9c78b For t2BFI, both Inst{26} and Inst{5} "should" be 0. 
Ref: I.1 Instruction encoding diagrams and pseudocode


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129552 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 00:35:08 +00:00
Michael J. Spencer
4babeeeeed Add 3DNow! intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129551 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 00:32:41 +00:00
Johnny Chen
de29a52940 The ARM disassembler did not handle the alignment correctly for VLD*DUP* instructions 
(single element or n-element structure to all lanes).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129550 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 00:10:45 +00:00