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Author SHA1 Message Date
Chris Lattner
09987f73f6 allow this to work on linux hosts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92407 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-02 00:22:15 +00:00
Chris Lattner
133ce871df Teach codegen to handle: 
(X != null) | (Y != null) --> (X|Y) != 0
 (X == null) & (Y == null) --> (X|Y) == 0

so that instcombine can stop doing this for pointers.  This is part of PR3351,
which is a case where instcombine doing this for pointers (inserting ptrtoint)
is pessimizing code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92406 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-02 00:00:03 +00:00
Chris Lattner
aac00392c3 rename file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92405 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 23:55:04 +00:00
Chris Lattner
ec12d05019 add a simple instcombine xform, simplify another one to use hasAllZeroIndices() 
instead of hand rolling a loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92403 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 23:09:08 +00:00
Chris Lattner
85c1c964dc generalize the pointer difference optimization to handle 
a constantexpr gep on the 'base' side of the expression.
This completes comment #4 in PR3351, which comes from
483.xalancbmk.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92402 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 22:42:29 +00:00
Chris Lattner
f2ebc682d1 teach instcombine to optimize pointer difference idioms involving constant 
expressions.  This is a step towards comment #4 in PR3351.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92401 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 22:29:12 +00:00
Chris Lattner
e33d413152 implement the transform requested in PR5284 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92398 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 18:34:40 +00:00
Chris Lattner
f031e8ad01 Teach codegen to lower llvm.powi to an efficient (but not optimal) 
multiply sequence when the power is a constant integer.  Before, our
codegen for std::pow(.., int) always turned into a libcall, which was
really inefficient.

This should also make many gfortran programs happier I'd imagine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92388 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 03:32:16 +00:00
Chris Lattner
0fba8cf9ff Make this more likely to generate a libcall. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92387 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 03:26:51 +00:00
Chris Lattner
d27f911b23 add a few trivial instcombines for llvm.powi. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92383 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 01:52:15 +00:00
Chris Lattner
9506c930aa When factoring multiply expressions across adds, factor both 
positive and negative forms of constants together.  This 
allows us to compile:

int foo(int x, int y) {
    return (x-y) + (x-y) + (x-y);
}

into:

_foo:                                                       ## @foo
	subl	%esi, %edi
	leal	(%rdi,%rdi,2), %eax
	ret

instead of (where the 3 and -3 were not factored):

_foo:
        imull   $-3, 8(%esp), %ecx
        imull   $3, 4(%esp), %eax
        addl    %ecx, %eax
        ret

this started out as:
    movl    12(%ebp), %ecx
    imull   $3, 8(%ebp), %eax
    subl    %ecx, %eax
    subl    %ecx, %eax
    subl    %ecx, %eax
    ret

This comes from PR5359.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92381 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 01:13:15 +00:00
Chris Lattner
75954e0bbd test case we alredy get right. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92380 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 00:50:00 +00:00
Chris Lattner
3523993451 reuse negates where possible instead of always creating them from scratch. 
This allows us to optimize test12 into:

define i32 @test12(i32 %X) {
  %factor = mul i32 %X, -3                        ; <i32> [#uses=1]
  %Z = add i32 %factor, 6                         ; <i32> [#uses=1]
  ret i32 %Z
}

instead of:

define i32 @test12(i32 %X) {
  %Y = sub i32 6, %X                              ; <i32> [#uses=1]
  %C = sub i32 %Y, %X                             ; <i32> [#uses=1]
  %Z = sub i32 %C, %X                             ; <i32> [#uses=1]
  ret i32 %Z
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92373 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 20:34:32 +00:00
Chris Lattner
69e98e2c0f teach reassociate to factor x+x+x -> x*3. While I'm at it, 
fix RemoveDeadBinaryOp to actually do something.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92368 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 19:24:52 +00:00
Chris Lattner
13a754ce92 simple fix for an incorrect factoring which causes a 
miscompilation, PR5458.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92354 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 08:33:49 +00:00
Chris Lattner
7f4ae5c84c merge some more tests in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92353 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 08:32:22 +00:00
Chris Lattner
e1f5460f78 filecheckize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92352 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 08:29:56 +00:00
Chris Lattner
6e7f3b39ef add some basic named MD tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92336 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 03:00:49 +00:00
Chris Lattner
c17e2849d1 fix two bogus tests that the asmparser now rejects. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92303 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-30 05:54:51 +00:00
Chris Lattner
628c13ad76 reimplement insertvalue/extractvalue metadata handling to not blindly 
accept invalid input.  Actually add a testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92297 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-30 05:14:00 +00:00
Chris Lattner
860775c2b0 fix parsing of mdstring values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92290 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-30 04:13:37 +00:00
Chris Lattner
3f3a0f6b49 Each instruction is allowed to have *multiple* different 
metadata objects on them.  Though the entire compiler supports this,
the asmparser didn't.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92270 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-29 21:25:40 +00:00
Chris Lattner
837eda93ee Do not crash when .ll printing metadata that smells like debug info, but isn't. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92268 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-29 21:17:33 +00:00
Sanjiv Gupta
223497e1ef Extern declaration for unordered.f32 libcall was not being emitted. Fixed that. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92242 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-29 03:24:34 +00:00
Sanjiv Gupta
917283a418 Fixed llc crash for zext (i1 -> i8) loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92201 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-28 04:53:24 +00:00
Dale Johannesen
b97a21cb2b Testcase for llvm-gcc checkin 92108. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92110 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-24 01:10:43 +00:00
Chris Lattner
04b091a782 handle equality memcmp of 8 bytes on x86-64 with two unaligned loads and a 
compare.  On other targets we end up with a call to memcmp because we don't
want 16 individual byte loads.  We should be able to use movups as well, but
we're failing to select the generated icmp.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92107 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-24 01:07:17 +00:00
Chris Lattner
8047d9a6be move an optimization for memcmp out of simplifylibcalls and into 
SDISel.  This optimization was causing simplifylibcalls to 
introduce type-unsafe nastiness.  This is the first step, I'll be 
expanding the memcmp optimizations shortly, covering things that
we really really wouldn't want simplifylibcalls to do.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92098 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-24 00:37:38 +00:00
Daniel Dunbar
a85e4017aa Remove an XFAIL. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92036 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 20:13:44 +00:00
Mikhail Glushenkov
e0b6570d24 Allow (set_option SwitchOption, true). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91997 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 12:49:30 +00:00
Sanjiv Gupta
76d2f9a4db Reapply 91904. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91996 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 11:19:09 +00:00
Sanjiv Gupta
e433d5e1f4 deleting empty file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91994 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 10:35:24 +00:00
Sanjiv Gupta
6d48855a56 Reverting back 91904. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91993 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 09:46:01 +00:00
Dale Johannesen
9949933d6e Use more sensible type for flags in asms. PR 5570. 
Patch by Sylve`re Teissier (sorry, ASCII only).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91988 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 07:32:51 +00:00
Eric Christopher
d060b2576a Update objectsize intrinsic and associated dependencies. Fix 
lowering code and update testcases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91979 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 02:51:48 +00:00
Anton Korobeynikov
a1508f9514 Add testcase for PR5703 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91931 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 22:37:23 +00:00
Evan Cheng
b1f4981333 Remove target attribute break-sse-dep. Instead, do not fold load into sse partial update instructions unless optimizing for size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91910 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 17:47:23 +00:00
Sanjiv Gupta
66500208a5 While converting one of the operands to a memory operand, we need to check if it is Legal and does not result into a cyclic dep. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91904 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 14:25:37 +00:00
Chris Lattner
516088d4ae specify a triple to use, fixing the test on non-x86-64 hosts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91900 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 07:01:12 +00:00
Bob Wilson
f27a4cd783 Generalize SROA to allow the first index of a GEP to be non-zero. Add a 
missing check that an array reference doesn't go past the end of the array,
and remove some redundant checks for in-bound array and vector references
that are no longer needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91897 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:57:14 +00:00
Chris Lattner
665e947740 various cleanups, make the disassemble reject lines with too much 
data on them, for example:

	addb	%al, (%rax)
simple-tests.txt:11:5: error: excess data detected in input
0 0 0 0 0 
    ^



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91896 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:56:51 +00:00
Chris Lattner
2adbef06a6 rewrite the file parser for the disassembler, implementing support for 
comments.  Also, check in a simple testcase for the disassembler,
including a test for r91864


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91894 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:37:58 +00:00
Chris Lattner
1a0e7081c3 Implement PR5795 by merging duplicated return blocks. This could go further 
by merging all returns in a function into a single one, but simplifycfg 
currently likes to duplicate the return (an unfortunate choice!)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91890 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:07:30 +00:00
Chris Lattner
42385b03aa convert to filecheck 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91889 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:04:26 +00:00
David Greene
f660802f34 Fix a bug in !subst where TableGen would go and resubstitute text it had 
just substituted.  This could cause infinite looping in certain
pathological cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91843 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 21:21:34 +00:00
Daniel Dunbar
ff99b16637 XFAIL these tests on powerpc, under the assumption that no one cares. If you care, feel free to fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91826 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 17:31:59 +00:00
Chris Lattner
4c1e3da0cd fix PR5837 by having SSAUpdate reuse phi nodes for the 
'GetValueInMiddleOfBlock' case, instead of inserting 
duplicates.

A similar fix is almost certainly needed by the machine-level
SSAUpdate implementation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91820 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 07:16:11 +00:00
Chris Lattner
65f067fa63 add check lines for min/max tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91816 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 06:08:50 +00:00
Chris Lattner
a0773eb330 really convert this to filecheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91815 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 06:06:10 +00:00
Chris Lattner
b109b5c148 give instcombine some helper functions for matching MIN and MAX, and 
implement some optimizations for MIN(MIN()) and MAX(MAX()) and 
MIN(MAX()) etc.  This substantially improves the code in PR5822 but
doesn't kick in much elsewhere.  2 max's were optimized in 
pairlocalalign and one in smg2000.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91814 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 06:03:05 +00:00
Chris Lattner
a278d4a1f7 filecheckize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91813 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 05:53:13 +00:00
Chris Lattner
3bf6815556 enhance x-(-A) -> x+A to preserve NUW/NSW. 
Use the presence of NSW/NUW to fold "icmp (x+cst), x" to a constant in
cases where it would otherwise be undefined behavior.

Surprisingly (to me at least), this triggers hundreds of the times in
a few benchmarks: lencode, ldecode, and 466.h264ref seem to *really*
like this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91812 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 04:04:05 +00:00
Chris Lattner
2799bafb98 Optimize all cases of "icmp (X+Cst), X" to something simpler. This triggers 
a bunch in lencode, ldecod, spass, 176.gcc, 252.eon, among others.  It is 
also the first part of PR5822


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91811 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 03:19:28 +00:00
Chris Lattner
6b57a797ab convert to filecheck 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91810 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 03:11:05 +00:00
Chris Lattner
f648125be9 fix an overly conservative caching issue that caused memdep to 
cache a pointer as being unavailable due to phi trans in the
wrong place.  This would cause later queries to fail even when
they didn't involve phi trans.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91787 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 21:29:22 +00:00
Chris Lattner
16e7ae42a1 fix inconsistent use of tabs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91783 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 20:44:43 +00:00
Sanjiv Gupta
bcfd12a234 Emit direction operand in binary insns that stores in memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91777 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 13:52:01 +00:00
Sanjiv Gupta
3f5d7642ce Test cases for changes done in 91768. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91773 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 11:38:14 +00:00
Chris Lattner
0ebc6ce974 fix PR5827 by disabling the phi slicing transformation in a case 
where instcombine would have to split a critical edge due to a
phi node of an invoke.  Since instcombine can't change the CFG,
it has to bail out from doing the transformation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91763 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 07:01:15 +00:00
Evan Cheng
9ab2b98ba5 Increase opportunities to optimize (brcond (srl (and c1), c2)). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91717 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 21:31:31 +00:00
Bob Wilson
b742defa0a Reapply 91459 with a simple fix for the problem that broke the x86_64-darwin 
bootstrap.  This also replaces the WeakVH references that Chris objected to
with normal Value references.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91711 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 20:14:40 +00:00
Mikhail Glushenkov
9503b49462 Make 'set_option' work with list options. 
This works now: (set_option "list_opt", ["val_1", "val_2", "val_3"])

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91679 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 11:27:26 +00:00
Eli Friedman
97b087c778 Optimize icmp of null and select of two constants even if the select has 
multiple uses.  (The construct in question was found in gcc.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91675 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 08:22:35 +00:00
Evan Cheng
400073d546 On recent Intel u-arch's, folding loads into some unary SSE instructions can 
be non-optimal. To be precise, we should avoid folding loads if the instructions
only update part of the destination register, and the non-updated part is not
needed. e.g. cvtss2sd, sqrtss. Unfolding the load from these instructions breaks
the partial register dependency and it can improve performance. e.g.

movss (%rdi), %xmm0
cvtss2sd %xmm0, %xmm0

instead of
cvtss2sd (%rdi), %xmm0

An alternative method to break dependency is to clear the register first. e.g.
xorps %xmm0, %xmm0
cvtss2sd (%rdi), %xmm0


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91672 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 07:40:29 +00:00
Dan Gohman
f838e2366a Tidy up this testcase and add test for tailcall optimization 
with unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91650 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:05:06 +00:00
Bob Wilson
5afffaed5c Handle ARM inline asm "w" constraints with 64-bit ("d") registers. 
The change in SelectionDAGBuilder is needed to allow using bitcasts to convert
between f64 (the default type for ARM "d" registers) and 64-bit Neon vector
types.  Radar 7457110.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91649 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:03:29 +00:00
Dan Gohman
f042396b0f Remove "tail" keywords. These calls are not intended to be tail calls. 
This protects this test from depending on codegen not performing the
tail call optimization by default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91648 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:02:18 +00:00
Jakob Stoklund Olesen
f8ad5bcdb5 Add test case for the phi reuse patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91642 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:11:44 +00:00
Sean Callanan
108934c65d Instruction fixes, added instructions, and AsmString changes in the 
X86 instruction tables.

Also (while I was at it) cleaned up the X86 tables, removing tabs and
80-line violations.

This patch was reviewed by Chris Lattner, but please let me know if
there are any problems.

* X86*.td
	Removed tabs and fixed 80-line violations

* X86Instr64bit.td
	(IRET, POPCNT, BT_, LSL, SWPGS, PUSH_S, POP_S, L_S, SMSW)
		Added
	(CALL, CMOV) Added qualifiers
	(JMP) Added PC-relative jump instruction
	(POPFQ/PUSHFQ) Added qualifiers; renamed PUSHFQ to indicate
		that it is 64-bit only (ambiguous since it has no
		REX prefix)
	(MOV) Added rr form going the other way, which is encoded
		differently
	(MOV) Changed immediates to offsets, which is more correct;
		also fixed MOV64o64a to have to a 64-bit offset
	(MOV) Fixed qualifiers
	(MOV) Added debug-register and condition-register moves
	(MOVZX) Added more forms
	(ADC, SUB, SBB, AND, OR, XOR) Added reverse forms, which
		(as with MOV) are encoded differently
	(ROL) Made REX.W required
	(BT) Uncommented mr form for disassembly only
	(CVT__2__) Added several missing non-intrinsic forms
	(LXADD, XCHG) Reordered operands to make more sense for
		MRMSrcMem
	(XCHG) Added register-to-register forms
	(XADD, CMPXCHG, XCHG) Added non-locked forms
* X86InstrSSE.td
	(CVTSS2SI, COMISS, CVTTPS2DQ, CVTPS2PD, CVTPD2PS, MOVQ)
		Added
* X86InstrFPStack.td
	(COM_FST0, COMP_FST0, COM_FI, COM_FIP, FFREE, FNCLEX, FNOP,
	 FXAM, FLDL2T, FLDL2E, FLDPI, FLDLG2, FLDLN2, F2XM1, FYL2X,
	 FPTAN, FPATAN, FXTRACT, FPREM1, FDECSTP, FINCSTP, FPREM,
	 FYL2XP1, FSINCOS, FRNDINT, FSCALE, FCOMPP, FXSAVE,
	 FXRSTOR)
		Added
	(FCOM, FCOMP) Added qualifiers
	(FSTENV, FSAVE, FSTSW) Fixed opcode names
	(FNSTSW) Added implicit register operand
* X86InstrInfo.td
	(opaque512mem) Added for FXSAVE/FXRSTOR
	(offset8, offset16, offset32, offset64) Added for MOV
	(NOOPW, IRET, POPCNT, IN, BTC, BTR, BTS, LSL, INVLPG, STR,
	 LTR, PUSHFS, PUSHGS, POPFS, POPGS, LDS, LSS, LES, LFS,
	 LGS, VERR, VERW, SGDT, SIDT, SLDT, LGDT, LIDT, LLDT,
	 LODSD, OUTSB, OUTSW, OUTSD, HLT, RSM, FNINIT, CLC, STC,
	 CLI, STI, CLD, STD, CMC, CLTS, XLAT, WRMSR, RDMSR, RDPMC,
	 SMSW, LMSW, CPUID, INVD, WBINVD, INVEPT, INVVPID, VMCALL,
	 VMCLEAR, VMLAUNCH, VMRESUME, VMPTRLD, VMPTRST, VMREAD,
	 VMWRITE, VMXOFF, VMXON) Added
	(NOOPL, POPF, POPFD, PUSHF, PUSHFD) Added qualifier
	(JO, JNO, JB, JAE, JE, JNE, JBE, JA, JS, JNS, JP, JNP, JL,
	 JGE, JLE, JG, JCXZ) Added 32-bit forms
	(MOV) Changed some immediate forms to offset forms
	(MOV) Added reversed reg-reg forms, which are encoded
		differently
	(MOV) Added debug-register and condition-register moves
	(CMOV) Added qualifiers
	(AND, OR, XOR, ADC, SUB, SBB) Added reverse forms, like MOV
	(BT) Uncommented memory-register forms for disassembler
	(MOVSX, MOVZX) Added forms
	(XCHG, LXADD) Made operand order make sense for MRMSrcMem
	(XCHG) Added register-register forms
	(XADD, CMPXCHG) Added unlocked forms
* X86InstrMMX.td
	(MMX_MOVD, MMV_MOVQ) Added forms
* X86InstrInfo.cpp: Changed PUSHFQ to PUSHFQ64 to reflect table
	change

* X86RegisterInfo.td: Added debug and condition register sets
* x86-64-pic-3.ll: Fixed testcase to reflect call qualifier
* peep-test-3.ll: Fixed testcase to reflect test qualifier
* cmov.ll: Fixed testcase to reflect cmov qualifier
* loop-blocks.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-11.ll: Fixed testcase to reflect call qualifier
* 2009-11-04-SubregCoalescingBug.ll: Fixed testcase to reflect call
  qualifier
* x86-64-pic-2.ll: Fixed testcase to reflect call qualifier
* live-out-reg-info.ll: Fixed testcase to reflect test qualifier
* tail-opts.ll: Fixed testcase to reflect call qualifiers
* x86-64-pic-10.ll: Fixed testcase to reflect call qualifier
* bss-pagealigned.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-1.ll: Fixed testcase to reflect call qualifier
* widen_load-1.ll: Fixed testcase to reflect call qualifier


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91638 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:01:26 +00:00
Eli Friedman
b17cb06c35 Allow instcombine to combine "sext(a) >u const" to "a >u trunc(const)". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91631 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 22:42:29 +00:00
Eli Friedman
8e4b197e0b Make the ptrtoint comparison simplification work if one side is a global. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91624 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:27:47 +00:00
Eli Friedman
0c826d98b3 Slightly generalize transformation of memmove(a,a,n) so that it also applies 
to memcpy. (Such a memcpy is technically illegal, but in practice is safe
and is generated by struct self-assignment in C code.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91621 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:07:31 +00:00
Bob Wilson
39c88a641b Re-revert 91459. It's breaking the x86_64 darwin bootstrap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91607 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 18:34:24 +00:00
Mikhail Glushenkov
994dbe0073 Add a 'set_option' action for use in OptionPreprocessor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91594 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 07:49:16 +00:00
Eli Friedman
e8e17833be Aggressively flip compare constant expressions where appropriate; constant 
folding in particular expects null to be on the RHS.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91587 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 06:07:04 +00:00
Evan Cheng
4c2b001f13 Revert this dag combine change: 
Fold (zext (and x, cst)) -> (and (zext x), cst)

DAG combiner likes to optimize expression in the other way so this would end up cause an infinite looping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91574 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 00:40:05 +00:00
Daniel Dunbar
2674089cef Reapply r91459, it was only unmasking the bug, and since TOT is still broken having it reverted does no good. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91559 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 20:09:53 +00:00
Daniel Dunbar
fca55c8ac7 Revert "Reapply 91184 with fixes and an addition to the testcase to cover the 
problem", this broke llvm-gcc bootstrap for release builds on
x86_64-apple-darwin10.

This reverts commit db22309800b224a9f5f51baf76071d7a93ce59c9.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91534 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 10:56:17 +00:00
Chris Lattner
24604110ef reapply my strstr optimization. I have reproduced the x86-64 bootstrap 
miscompile (i386.o miscompares) but it happens both with and without
this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91532 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 09:32:05 +00:00
Nick Lewycky
0588bcef8d Make this test pass on Linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91521 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 07:35:25 +00:00
Devang Patel
978b75ee50 XFAIL on ppc-darwin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91495 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 02:11:38 +00:00
Evan Cheng
2e489c4f9d Re-enable 91381 with fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91489 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:53:11 +00:00
Chris Lattner
0001517d9d revert my strstr optimization, I'm told it breaks x86-64 bootstrap. 
Will reapply with a fix when I get a chance.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91486 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:46:02 +00:00
Dale Johannesen
fc49bd2447 Do better with physical reg operands (typically, from inline asm) 
in local register allocator.  If a reg-reg copy has a phys reg
input and a virt reg output, and this is the last use of the phys
reg, assign the phys reg to the virt reg.  If a reg-reg copy has
a phys reg output and we need to reload its spilled input, reload
it directly into the phys reg than passing it through another reg.

Following 76208, there is sometimes no dependency between the def of
a phys reg and its use; this creates a window where that phys reg
can be used for spilling (this is true in linear scan also).  This
is bad and needs to be fixed a better way, although 76208 works too
well in practice to be reverted.  However, there should normally be
no spilling within inline asm blocks.  The patch here goes a long way
towards making this actually be true.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91485 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:29:41 +00:00
Bob Wilson
970eaf2520 Reapply 91184 with fixes and an addition to the testcase to cover the problem 
found last time.  Instead of trying to modify the IR while iterating over it,
I've change it to keep a list of WeakVH references to dead instructions, and
then delete those instructions later.  I also added some special case code to
detect and handle the situation when both operands of a memcpy intrinsic are
referencing the same alloca.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91459 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 22:00:51 +00:00
Chris Lattner
ad6b1fdaf9 optimize strstr, PR5783 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91438 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 19:14:40 +00:00
Mikhail Glushenkov
f8bc1e4b27 Convert llvmc tests to FileCheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91420 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 07:21:14 +00:00
Mikhail Glushenkov
545f96814b Support hook invocation from 'append_cmd'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91419 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 07:20:50 +00:00
Kenneth Uildriks
76df3f398c For fastcc on x86, let ECX be used as a return register after EAX and EDX 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91410 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:27:52 +00:00
Evan Cheng
d7760a4905 Disable 91381 for now. It's miscompiling ARMISelDAG2DAG.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91405 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:07:11 +00:00
Mikhail Glushenkov
e4ac23a0ff Validate the generated C++ code in llvmc tests. 
Checks that the code generated by 'tblgen --emit-llvmc' can be actually
compiled. Also fixes two bugs found in this way:

- forward_transformed_value didn't work with non-list arguments
- cl::ZeroOrOne is now called cl::Optional

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91404 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:04:52 +00:00
Mikhail Glushenkov
b5fab402d0 Pipe 'grep' output to 'count'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91403 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:04:14 +00:00
Mikhail Glushenkov
abf2d986c9 Allow $CALL(Hook, '$INFILE') for non-join tools. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91402 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:04:02 +00:00
Evan Cheng
9818c043d2 Make 91378 more conservative. 
1. Only perform (zext (shl (zext x), y)) -> (shl (zext x), y) when y is a constant. This makes sure it remove at least one zest.
2. If the shift is a left shift, make sure the original shift cannot shift out bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91399 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:00:32 +00:00
Evan Cheng
ad9c0a3d8b Use sbb x, x to materialize carry bit in a GPR. The result is all one's or all zero's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91381 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:53:42 +00:00
Evan Cheng
8acb3100de Fold (zext (and x, cst)) -> (and (zext x), cst). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91380 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:52:11 +00:00
Evan Cheng
99b653c36f Propagate zest through logical shift. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91378 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:41:36 +00:00
Dan Gohman
2e141d744e Fix integer cast code to handle vector types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91362 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 23:40:38 +00:00
Eric Christopher
38e1074c53 Add radar fixed in comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91312 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 19:07:25 +00:00
Shantonu Sen
bc1c99c4fb Remove empty file completely 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91277 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 14:15:15 +00:00
Chris Lattner
a59adc4015 revert r91184, because it causes a crash on a .bc file I just 
sent to Bob.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91268 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 05:11:02 +00:00
Mikhail Glushenkov
0898d7d4a5 Add a test for the 'init' option property. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91259 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 04:06:38 +00:00
Evan Cheng
dd99f3a7dc Disable r91104 for x86. It causes partial register stall which pessimize code in 32-bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91223 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 20:03:14 +00:00
Benjamin Kramer
7b3f1a21ea Fix some CHECK lines which were ignored by accident. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91214 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 09:25:50 +00:00
Bob Wilson
73a1b67cb9 Revise scalar replacement to be more flexible about handle bitcasts and GEPs. 
While scanning through the uses of an alloca, keep track of the current offset
relative to the start of the alloca, and check memory references to see if
the offset & size correspond to a component within the alloca.  This has the
nice benefit of unifying much of the code from isSafeUseOfAllocation,
isSafeElementUse, and isSafeUseOfBitCastedAllocation.  The code to rewrite
the uses of a promoted alloca, after it is determined to be safe, is
reorganized in the same way.

Also, when rewriting GEP instructions, mark them as "in-bounds" since all the
indices are known to be safe.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91184 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 23:47:40 +00:00
Anton Korobeynikov
8d1ffbd1ad Lower setcc branchless, if this is profitable. 
Based on the patch by Brian Lucas!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91175 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 23:01:29 +00:00
Dan Gohman
87862e77bb Implement vector widening, splitting, and scalarizing for SIGN_EXTEND_INREG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91158 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 21:31:27 +00:00
Dan Gohman
192db0027c Change this to the correct PR number. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91148 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 20:09:21 +00:00
Dan Gohman
050959cd08 Make getUniqueExitBlocks's precondition assert more precise, to 
avoid spurious failures. This fixes PR5758.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91147 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 20:05:23 +00:00
Dan Gohman
a4f9cc4e55 Fix the result type of SELECT nodes lowered from Select instructions with 
aggregate return values. This fixes PR5754.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91145 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 19:50:50 +00:00
Anton Korobeynikov
817a46454a Honour setHasCalls() set from isel. 
This is used in some weird cases like general dynamic TLS model.
This fixes PR5723

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91144 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 19:39:55 +00:00
Evan Cheng
50d070561e Tests for 91103 and 91104. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91105 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 06:02:21 +00:00
Eric Christopher
072f6fe196 Add a test for the fix in revision 91009. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91062 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-10 21:11:40 +00:00
Evan Cheng
6fd78ec8a2 It's not safe to coalesce a move where src and dst registers have different subregister indices. e.g.: 
%reg16404:1<def> = MOV8rr %reg16412:2<kill>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91061 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-10 20:59:45 +00:00
Chris Lattner
16f244e982 Fix PR5744, a case where we were getting the pointer size instead of the 
value size.  This only manifested when memdep inprecisely returns clobber,
which is do to a caching issue in the PR5744 testcase.  We can 'efficiently
emulate' this by using '-no-aa'


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91004 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-10 00:11:45 +00:00
Evan Cheng
ce72f3fbdf Fix test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90988 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 22:24:42 +00:00
Evan Cheng
c363094e04 Optimize splat of a scalar load into a shuffle of a vector load when it's legal. e.g. 
vector_shuffle (scalar_to_vector (i32 load (ptr + 4))), undef, <0, 0, 0, 0>
=>
vector_shuffle (v4i32 load ptr), undef, <1, 1, 1, 1>

iff ptr is 16-byte aligned (or can be made into 16-byte aligned).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90984 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 21:00:30 +00:00
Chris Lattner
af064aeee6 fix hte last remaining known (by me) phi translation bug. When we reanalyze 
clobbers to forward pieces of large stores to small loads, we need to consider
the properly phi translated pointer in the store block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90978 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 18:21:46 +00:00
Chris Lattner
4d3a16f81b Add a minor optimization: if we haven't changed the operands of an 
add, there is no need to scan the world to find the same add again.
This invalidates the previous testcase, which wasn't wonderful anyway,
because it needed a run of instcombine to permute the use-lists in 
just the right way to before GVN was run (so it was really fragile).
Not a big loss.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90973 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 17:27:45 +00:00
Chris Lattner
eddc65aa0d fix PR5733, a case where we'd replace an add with a lexically identical 
binary operator that wasn't an add.  In this case, a xor.  Whoops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90971 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 17:18:49 +00:00
Chris Lattner
1a247f32dd merge crash-2.ll into crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90969 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 17:17:26 +00:00
Chris Lattner
55fe79f044 the code in GVN that tries to forward large loads to small 
stores is not phi translating, thus it miscompiles really
crazy testcases.  This is from inspection, I haven't seen
this in the wild.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90930 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 02:43:05 +00:00
Chris Lattner
05e15f8897 Switch GVN and memdep to use PHITransAddr, which correctly handles 
phi translation of complex expressions like &A[i+1].  This has the
following benefits:

1. The phi translation logic is all contained in its own class with
   a strong interface and verification that it is self consistent.

2. The logic is more correct than before.  Previously, if intermediate
   expressions got PHI translated, we'd miss the update and scan for
   the wrong pointers in predecessor blocks.  @phi_trans2 is a testcase
   for this.

3. We have a lot less code in memdep.

We can handle phi translation across blocks of things like @phi_trans3,
which is pretty insane :).

This patch should fix the miscompiles of 255.vortex, and I tested it 
with a bootstrap of llvm-gcc, llvm-test and dejagnu of course.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90926 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 01:59:31 +00:00
Evan Cheng
7bd6478cd6 Teach InferPtrAlignment to infer GV+cst alignment and use it to simplify x86 isl lowering code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90925 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 01:53:58 +00:00
Devang Patel
a963306eed Remove tests that are not suitable anymore. Plus they are not testing the original bugfixes anymore. These tests were inserted to check bug fixes in code that handled debug info intrinsics. These intrinsics are no longer used and now llvm parser simply ignores old .dbg intrinsics from these dead tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90923 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 01:46:00 +00:00
Devang Patel
0000fadb00 Revert 90858 90875 and 90805 for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90898 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 23:21:45 +00:00
Evan Cheng
d831cda3e7 - Support inline asm 'w' constraint for 128-bit vector types. 
- Also support the 'q' NEON registers asm code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90894 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 23:06:22 +00:00
Daniel Dunbar
aefd63d415 CMake/lit: Add llvm_{unit_,}site_config parameters, and always pass them when running tests from the project files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90869 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 19:47:36 +00:00
Devang Patel
018b66038c Do not try to push dead variable's debug info into namespace info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90857 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 15:01:35 +00:00
Duncan Sands
7a154cf228 Teach GlobalOpt to delete aliases with internal linkage (after 
forwarding any uses).  GlobalDCE can also do this, but is only
run at -O3.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90850 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 10:10:20 +00:00
Anton Korobeynikov
9aa1ec87b0 Reduce (cmp 0, and_su (foo, bar)) into (bit foo, bar). This saves extra instruction. Patch inspired by Brian Lucas! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90819 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 01:03:04 +00:00
Evan Cheng
fe81f96b86 Test case for 90787. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90791 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-07 19:42:22 +00:00
David Greene
e1a2fd5ad4 Use FileCheck and set nounwind on calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90790 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-07 19:40:26 +00:00
Dan Gohman
d84ea47b89 Don't enable the post-RA scheduler on x86 except at -O3. In its 
current form, it is too expensive in compile time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90781 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-07 19:04:31 +00:00
Mikhail Glushenkov
8245a1dd53 Implement 'forward_value' and 'forward_transformed_value'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90770 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-07 17:03:05 +00:00
Anton Korobeynikov
7cca606aaa Dynamic stack realignment use of sp register as source/dest register 
in "bic sp, sp, #15" leads to unpredicatble behaviour in Thumb2 mode.
Emit the following code instead:
mov r4, sp
bic r4, r4, #15
mov sp, r4

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90724 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 22:39:50 +00:00
Chris Lattner
08bc2701a2 fix PR5698 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90708 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 17:17:23 +00:00
Chris Lattner
bc9a28dd54 constant fold loads from memcpy's from global constants. This is important 
because clang lowers nontrivial automatic struct/array inits to memcpy from
a global array.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90698 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 05:29:56 +00:00
Chris Lattner
cb9cbc4949 add support for forwarding mem intrinsic values to non-local loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90697 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 04:54:31 +00:00
Chris Lattner
0fce29b9d1 gvn is optimizing this better now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90696 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 04:16:05 +00:00
Chris Lattner
faf815b938 Handle forwarding local memsets to loads. For example, we optimize this: 
short x(short *A) {
  memset(A, 1, sizeof(*A)*100);
  return A[42];
}

to 'return 257' instead of doing the load.  



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90695 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 01:57:02 +00:00
Chris Lattner
f616ee2895 merge two tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90691 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 01:47:24 +00:00
Bill Wendling
dc492e0370 Temporarily revert r90502. It was causing the llvm-gcc bootstrap on PPC to fail. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90653 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-05 07:30:23 +00:00
Nick Lewycky
83e8ec73e1 Generalize this optimization to work on equality comparisons between any two 
integers that are constant except for a single bit (the same n-th bit in each).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90646 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-05 05:00:00 +00:00
Dan Gohman
3b9bc04eda Fix this code to use DIScope instead of DICompileUnit, as in r90181. 
Don't print "SrcLine"; just print the filename and line number, which
is obvious enough and more informative.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90631 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-05 00:23:29 +00:00
Dan Gohman
8a3f644b20 Remove now-redundant llvm-as invocations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90626 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-05 00:02:37 +00:00
Bill Wendling
7907ddb6d8 Add testcase for PR4262. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90623 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 23:29:57 +00:00
Bill Wendling
e98be31e7f Temporarily revert r72620 because r72619 was reverted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90619 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 23:16:56 +00:00
Chris Lattner
44a7a380aa Fix PR5551 by not ignoring the top level constantexpr when 
folding a load from constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90545 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 06:29:29 +00:00
Chris Lattner
e4968a4b9d Small and carefully crafted testcase showing a miscompilation by GVN 
that I'm working on.  This is manifesting as a miscompile of 255.vortex
on some targets.  No check lines yet because it fails.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90520 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 02:12:12 +00:00