Eli Friedman
43f51aeca8
Add support for generating CMPXCHG16B on x86-64 for the cmpxchg IR instruction.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138660 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 21:21:21 +00:00
Bill Wendling
51fb91c04c
Split the landing pad block only if it's a critical edge. Also intelligently
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split it in the other place where we're splitting critical edges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138658 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 21:18:55 +00:00
Owen Anderson
2b568fb3ce
Fix ARM codegen breakage caused by r138653.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138657 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 21:12:37 +00:00
Eric Christopher
6c0046f5d4
Whitespace and 80-col.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138654 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 21:02:40 +00:00
Owen Anderson
9ab0f25fc1
invalid-LDR_PRE-arm.txt was already passing, but for the wrong reasons. We were failing to specify enough fixed bits of LDR_PRE/LDRB_PRE, resulting in decoding conflicts. Separate them into immediate vs. register versions, allowing us to specify the necessary fixed bits. This in turn results in the test being decoded properly, and being rejected as UNPREDICTABLE rather than a hard failure.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138653 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 20:43:14 +00:00
Bill Wendling
2b18881185
Don't sink landingpad instructions during ind-var simplification.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138651 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 20:40:15 +00:00
Owen Anderson
1af7f7291d
Update for feedback from Jim.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138642 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 19:39:26 +00:00
Benjamin Kramer
86ce852a15
ARMDisassembler: Always return a size, even when disassembling fails.
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This should fix PR10772.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138636 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 18:21:36 +00:00
Owen Anderson
96425c8464
Support an extension of ARM asm syntax to allow immediate operands to ADR instructions. This is helpful for disassembler testing, and indeed exposed a disassembler bug that is also fixed here.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138635 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 18:09:22 +00:00
Kalle Raiskila
54f8a9f54d
Don't insert branch hint lables that are never used.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138630 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 10:14:56 +00:00
Owen Anderson
9bd655dcde
Fix PR10755 by checking for invalid predicate codes from UNPREDICTABLE t2IT instructions when decoding their successors.
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This is the last disassembly crash detected by exhaustive Thumb2 instruction space. Major thanks to Chandler Carruth for making this kind of exhaustive testing possible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138625 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 06:19:51 +00:00
Craig Topper
8fd13b6de5
Fix disassembling of VCVTSD2SI
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138623 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 04:49:29 +00:00
Andrew Trick
5434c1e73b
LoopInfo::updateUnloop fix, and verify Block->Loop maps.
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Fixes an oversight, and adds verification to catch it in the unloop.ll tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138622 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 03:06:34 +00:00
Eli Friedman
069e2ed794
Atomic load/store on ARM/Thumb.
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I don't really like the patterns, but I'm having trouble coming up with a
better way to handle them.
I plan on making other targets use the same legalization
ARM-without-memory-barriers is using... it's not especially efficient, but
if anyone cares, it's not that hard to fix for a given target if there's
some better lowering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138621 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 02:59:24 +00:00
Benjamin Kramer
9bb5488dbd
Address review comments.
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- Reword comments.
- Allow undefined behavior interfering with undefined behavior.
- Add address space checks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138619 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 02:25:55 +00:00
Benjamin Kramer
98d6d2372f
SimplifyCFG: If we have a PHI node that can evaluate to NULL and do a load or store to the address returned by the PHI node then we can consider this incoming value as dead and remove the edge pointing there, unless there are instructions that can affect control flow executed in between.
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In theory this could be extended to other instructions, eg. division by zero, but it's likely that it will "miscompile" some code because people depend on div by zero not trapping. NULL pointer dereference usually leads to a crash so we should be on the safe side.
This shrinks the size of a Release clang by 16k on x86_64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138618 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 01:22:29 +00:00
Bill Wendling
09908c4b4a
Look at only the terminators of the basic block. Also, if we're using the new EH
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scheme, return 'true' so that it doesn't try to run the old EH scheme's fixup on
the new code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138605 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 23:48:11 +00:00
Bill Wendling
c82a61c6c6
Initial check in that will auto-upgrade the old EH scheme to the new EH scheme.
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This upgrade suffers from the problems of the old EH scheme - i.e., that the
calls to llvm.eh.exception() and llvm.eh.selector() can wander off and get
lost. It makes a valiant effort to reclaim these little lost lambs.
This is a first draft, so it hasn't yet been hooked up to the parser.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138602 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 23:22:40 +00:00
Bruno Cardoso Lopes
f1a264232c
Do the same as r138461. Mark VZEROALL as clobbering all YMM registers
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138592 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 22:23:58 +00:00
Nick Lewycky
b210cbf692
Remove stray fullstop.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138589 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 21:46:20 +00:00
Bruno Cardoso Lopes
6292eceea0
Add support for AVX 256-bit version of MOVDDUP!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138588 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 21:40:37 +00:00
Bruno Cardoso Lopes
06ef923d14
Make isMOVDDUP mask check more strict and update comments!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138587 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 21:40:34 +00:00
Owen Anderson
99906830e8
Port over additional encoding tests to decoding tests, and fix an operand ordering bug this exposed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138575 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 18:30:18 +00:00
Benjamin Kramer
cf847bfa6f
Intel family 6 model 44 is Gulftown/Westmere-EP and doesn't have AVX.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138573 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 18:05:56 +00:00
Andrew Trick
b9ca5124f8
ARM fix for missing implicit operands on ldmia_ret.
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rdar://10005094: miscompile of 176.gcc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138568 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 17:50:53 +00:00
Andrew Trick
51972da576
whitespace
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138566 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 17:40:54 +00:00
Jim Grosbach
0c49ac05cd
Explicitly disallow predication in Thumb1 assembly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138562 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 17:23:55 +00:00
Craig Topper
ebc1db0fac
Add more missing TB encodings to VEX instructions to allow them to be disassembled. Fixes remainder of PR10678.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138553 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 08:11:01 +00:00
Craig Topper
ea03659d23
Add TB encoding to VEROALL, VZEROUPPER, and VCVTPS2PD to allow them to be disassembled. Fixes PR10723.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138551 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 06:57:46 +00:00
Bill Wendling
8b6af8a2a9
LSR wants to split the landing pad's critical edge. Let it do it, but use the
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proper function to do it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138550 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 05:55:40 +00:00
Benjamin Kramer
2df9f8df95
Initialize member variable.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138548 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 04:04:18 +00:00
Bruno Cardoso Lopes
07b7f672a0
Add support for 256-bit versions of VSHUFPD and VSHUFPS.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138546 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 02:58:26 +00:00
Bruno Cardoso Lopes
e7461c0353
Add memory version of SHUFPD to mask decoding!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138545 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 02:58:21 +00:00
Evan Cheng
77eaaf0a0c
Hide -global-merge option.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138540 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 01:22:49 +00:00
Bill Wendling
89d4411cef
When inserting new instructions, use getFirstInsertionPt instead of
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getFirstNonPHI so that it will skip over the landingpad instructions as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138537 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 01:08:34 +00:00
Evan Cheng
b8cfe4ff41
Add a command line option to disable global merge pass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138536 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 01:00:36 +00:00
Evan Cheng
0f660260e6
Remove a out-of-place comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138534 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25 00:54:42 +00:00
Bruno Cardoso Lopes
27831e5e6f
Create a section for non-instructions patterns in the beginning of the
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file, and move more code around!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138521 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 23:18:11 +00:00
Bruno Cardoso Lopes
9993499057
Move code around!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138520 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 23:18:09 +00:00
Bruno Cardoso Lopes
de79231468
Organize UNPCK* patterns, also add remaining for AVX.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138519 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 23:18:06 +00:00
Bruno Cardoso Lopes
4cf4778ac4
Move remaining MOVDDUP patterns close to MOVDDUP defintion and duplicate
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the missing ones for AVX.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138518 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 23:18:04 +00:00
Bruno Cardoso Lopes
4724f25ed6
Organize and tidy up MOVDDUP section. Also update comments!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138517 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 23:18:02 +00:00
Bruno Cardoso Lopes
6140294363
Move MOVHLPS patterns close to MOVHLPS definition, and duplicate the
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pattern for 128-bit AVX mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138516 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 23:17:59 +00:00
Bruno Cardoso Lopes
954d5eabb7
Move all PSHUF* patterns close to the PSHUF* definitions. Also be
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explicit about which subtarget they refer to, and add AVX versions of
the ones we currently don't. Remove old and now wrong comments!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138515 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 23:17:57 +00:00
Bruno Cardoso Lopes
af002d8405
Move all SHUFP* patterns close to the SHUFP* definitions. Also be
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explicit about which subtarget they refer to, and add AVX versions of
the ones we currently don't. Make the mask check more strict, to be
clear it won't be used to match to 256-bit versions!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138514 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 23:17:55 +00:00
Owen Anderson
f44082091c
Perform more thorough checking of t2IT mask parameters, which fixes all remaining crashers when disassembling the entire 16-bit instruction space.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138507 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 22:40:22 +00:00
Eli Friedman
f8f90f0174
Hook up 64-bit atomic load/store on x86-32. I plan to write more efficient implementations eventually.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138505 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 22:33:28 +00:00
Evan Cheng
5fbe5e783e
Some autoconf tests use module level inline asm to test compiler's handling of
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.cfi_startproc. e.g. libffi:
$ cat confopt.c
asm (".cfi_startproc\n\t.cfi_endproc");
int main () { return 0; }
Teach MC / dwarf emission to handle these cfi directives which essentially
create an empty frame.
rdar://10017184
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138504 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 22:31:37 +00:00
Jim Grosbach
b9d3ff8729
ARM asm backend initialize isThumbMode based on target triple.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138501 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 22:27:35 +00:00
Jim Grosbach
4d23e99d2a
Thumb .n mnemonic qualifiers can be ignored for now.
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We'll need to pay attention to them when we start getting more serious about
the details of parsing thumb2 assembly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138500 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 22:19:48 +00:00