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a00ef1122c
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1891 Commits

Author SHA1 Message Date
Dan Gohman
a00ef1122c Update this test for a trivial register allocation difference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94989 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-01 19:00:32 +00:00
Evan Cheng
0a4fd46d9e Undo r94946 now all the tests are passing again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94970 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-01 02:13:39 +00:00
Evan Cheng
843bd699f6 Avoid recursive sibcall's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94946 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-31 06:44:49 +00:00
Evan Cheng
a6bff982c1 Allow more tailcall optimization: calls with inputs that are all passed in registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94873 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-30 01:22:00 +00:00
Evan Cheng
7096ae48c9 Catch more trivial tail call opportunities: no inputs and output types match. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94804 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-29 06:45:59 +00:00
Evan Cheng
5fef8bc1cb Fix a bug introduced by r94490 where it created a X86ISD::CMP whose output type is different from its inputs. 
This fixes PR6146.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94731 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-28 01:57:22 +00:00
Chris Lattner
10e7c60c04 emit a 0 byte instead of a noop if a function is empty on darwin. 
"0" is nice and target independent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94718 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-28 01:06:32 +00:00
Chandler Carruth
6f03433516 Quick fix to a test that is currently failing on every Linux build bot. No idea 
if this is the "correct" fix, but it seems a strict improvement.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94675 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-27 10:36:15 +00:00
Evan Cheng
b17124553d Perform trivial tail call optimization for callees with "C" ABI. These are done 
even when -tailcallopt is not specified and it does not require changing ABI.
First case is the most trivial one. Perform tail call optimization when both
the caller and callee do not return values and when the callee does not take
any input arguments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94664 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-27 06:25:16 +00:00
Chris Lattner
c618c8aff4 emit jump table an alias ".set" directives through MCStreamer as 
assignments.

.set x, a-b

is the same as:

x = a-b



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94596 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-26 21:53:08 +00:00
Chris Lattner
6a315c358c eliminate MCAsmInfo::NeedsSet: we now just use .set on any platform 
that has it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94581 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-26 20:20:43 +00:00
Evan Cheng
8c7ecaf524 Implement cond ? -1 : 0 with sbb. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94490 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-26 02:00:44 +00:00
Chris Lattner
5c78034bc8 we removed support for darwin8 tools. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-25 07:43:40 +00:00
Mon P Wang
6fb474bd3c It seems better to scalarize vectors of size 1 instead of widening them. 
Add support to widen SETCC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94342 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-24 00:24:43 +00:00
Mon P Wang
eb38ebf15c Improved widening loads by adding support for wider loads if 
the alignment allows.  Fixed a bug where we didn't use a
vector load/store for PR5626.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94338 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-24 00:05:03 +00:00
Chris Lattner
52492ac0d0 Change constantexpr global variable initializers to convert the constants 
to MCExpr then emit them through MCStreamer with EmitValue.  I think all
global variable initializers are now going through mcstreamer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-23 06:17:14 +00:00
Eric Christopher
e9625cf698 Don't lower splat vector load to relative to the esp if the 
stack may be misaligned.

Update test accordingly.

Patch by Evan Cheng!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94291 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-23 06:02:43 +00:00
Chris Lattner
05f845314a emit .ascii and .asciz through MCStreamer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94282 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-23 04:54:10 +00:00
Evan Cheng
4d03ca0702 Fix tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94271 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-23 01:19:28 +00:00
Chris Lattner
7e02e52e9a make this less constrained, we want blank lines between globals. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94201 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-22 19:51:08 +00:00
Dan Gohman
7979b72feb Revert LoopStrengthReduce.cpp to pre-r94061 for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94123 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-22 00:46:49 +00:00
Dan Gohman
a10756ee65 Re-implement the main strength-reduction portion of LoopStrengthReduction. 
This new version is much more aggressive about doing "full" reduction in
cases where it reduces register pressure, and also more aggressive about
rewriting induction variables to count down (or up) to zero when doing so
reduces register pressure.

It currently uses fairly simplistic algorithms for finding reuse
opportunities, but it introduces a new framework allows it to combine
multiple strategies at once to form hybrid solutions, instead of doing
all full-reduction or all base+index.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94061 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-21 02:09:26 +00:00
Chris Lattner
213168ba46 emit basic block labels with mcstreamer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93993 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-20 07:24:05 +00:00
Chris Lattner
043c4e5c1d emit integer and fp zeros as (e.g.) .byte 0 instead of .space 1, 
for tidiness.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93992 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-20 07:19:19 +00:00
Chris Lattner
2dd245c469 signficant cleanups to EmitGlobalConstant (including streamerization 
of int initializers), change some methods to be static functions,
use raw_ostream::write_hex instead of a smallstring dance with 
APValue::toStringUnsigned(S, 16).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93991 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-20 07:11:32 +00:00
Dan Gohman
cd9e155755 Fold (add x, shl(0 - y, n)) -> sub(x, shl(y, n)), to simplify some code 
that SCEVExpander can produce when running on behalf of LSR.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93949 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-19 23:30:49 +00:00
Dan Gohman
2b98bd23cb Make SCEVAddRecExpr's getType return a pointer type when the add 
has a pointer member. This helps reduce unnecessary bitcasting
and uglygeps.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93939 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-19 22:53:50 +00:00
Dan Gohman
8e1aa8edec Add nounwinds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93919 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-19 21:51:51 +00:00
Evan Cheng
590d16be6f Do not extend extension results beyond the use of a PHI instruction at the start of a use block. A PHI use is expected to kill its source values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93895 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-19 19:45:51 +00:00
Chris Lattner
41aa25a433 don't let asm-verbose break the check-next lines in these tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93869 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-19 06:39:54 +00:00
Chris Lattner
c7fbe90389 fix a significant difference between llvm and gcc on ELF systems: 
GCC would put weak zero initialized mutable data in the .bss section,
we would put it into a crasy '.gnu.linkonce.b.test,"aw",@nobits' 
section.  Fixing this will allow simplifications next up.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93844 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-19 03:06:01 +00:00
Chris Lattner
129e1872c2 there is no need to emit a .section above .comm on linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93842 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-19 02:46:56 +00:00
Evan Cheng
1ad0e8b576 Canonicalize -1 - x to ~x. 
Instcombine does this but apparently there are situations where this pattern will escape the optimizer and / or created by isel. Here is a case that's seen in JavaScriptCore:
  %t1 = sub i32 0, %a
  %t2 = add i32 %t1, -1
The dag combiner pattern: ((c1-A)+c2) -> (c1+c2)-A
will fold it to -1 - %a.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93773 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-18 21:38:44 +00:00
Chris Lattner
a7c65e03c4 reduce this test and convert to filecheck, hopefully the linux buildbot 
will tell me something more useful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93688 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-17 19:09:12 +00:00
Kenneth Uildriks
93ae407ec3 When checking for sret-demotion, it needs to use legal types. When using the return value of an sret-demoted call, it needs to use possibly illegal types that match the declared Type of the callee. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93667 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-16 23:37:33 +00:00
Chris Lattner
a4a1b38dda this teestcase takes a long time to crash, remove it. If someone cares about this, they should file a bug, it's not doing any good as an xfail. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93604 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-16 00:53:22 +00:00
David Greene
ee9c595885 Fix PR6019. A load has more than one use if it feeds a bitconvert that 
has more than one use.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93576 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-15 23:23:41 +00:00
Dan Gohman
ff00a55517 Fix a codegen abort seen in 483.xalancbmk. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93417 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-14 03:08:49 +00:00
Chris Lattner
dd8e09ad76 this test requires SSE, thanks to jyasskin for pointing this out. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93360 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-13 21:51:41 +00:00
Evan Cheng
eb18812f75 Commit some changes I had managed to lose last night while refactoring the code. Avoid change use of PHI instructions because it's not legal to insert any instructions before them. 
This fixes PR6027.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93335 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-13 19:16:39 +00:00
Evan Cheng
81d22d87de Re-enable extension optimization pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93313 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-13 08:45:40 +00:00
Evan Cheng
262a96edb4 Disable opt-ext pass to unbreak the build for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93286 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-13 01:51:43 +00:00
Jeffrey Yasskin
3aba5b1d60 Try to fix the ARM and PPC buildbots. The -mattr=vector-unaligned-mem 
flag doesn't exist there, and this is an x86 test.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93279 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-13 00:31:43 +00:00
Evan Cheng
7da9ecf967 Add a quick pass to optimize sign / zero extension instructions. For targets where the pre-extension values are available in the subreg of the result of the extension, replace the uses of the pre-extension value with the result + extract_subreg. 
For now, this pass is fairly conservative. It only perform the replacement when both the pre- and post- extension values are used in the block. It will miss cases where the post-extension values are live, but not used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93278 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-13 00:30:23 +00:00
Evan Cheng
d9d3a894b3 Add nounwind. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93244 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-12 18:29:23 +00:00
Duncan Sands
796248fdb1 Revert commit 93204, since it causes the assembler to barf 
on x86-64 linux with messages like this:
Error: Incorrect register `%r14' used with `l' suffix


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93242 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-12 17:46:16 +00:00
Dan Gohman
ad4f7a6882 Make several tests less fragile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93230 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-12 04:52:47 +00:00
Dan Gohman
f1b4d26e67 Reapply the MOV64r0 patch, with a fix: MOV64r0 clobbers EFLAGS. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93229 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-12 04:42:54 +00:00
Evan Cheng
b85071c736 Add manual ISD::OR fastisel selection routines. TableGen is no longer autogen them after 93152 and 93191. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93204 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-11 22:59:27 +00:00
Evan Cheng
199c4240fe Extend r93152 to work on OR r, r. If the source set bits are known not to overlap, then select as an ADD instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93191 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-11 22:03:29 +00:00