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bbb6ed8264
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49327 Commits

Author SHA1 Message Date
Owen Anderson
bbb6ed8264 Apply the same fix for the change in LDR_PRE_IMM/LDRB_PRE_IMM operand encodings to the load-store optimizer that I applied to the instruction selector in r138758. Fixes ary3 from the nightly test suite. 
llvm-svn: 138766
 2011-08-29 21:14:19 +00:00
Bill Wendling
d9df43679c Fix grammar, noticed by Duncan. 
llvm-svn: 138764
 2011-08-29 21:03:12 +00:00
Owen Anderson
518e14771a Specify an additional fixed bit in the PLD/PLDW/PLI register-register encoding. 
llvm-svn: 138760
 2011-08-29 20:42:00 +00:00
Owen Anderson
44c24b13a3 addrmode_imm12 and addrmode2_offset encode their immediate values differently. Update the manual instruction selection code that was encoding them the addrmode2 way even though LDR_PRE_IMM/LDRB_PRE_IMM had switched to addrmode_imm12. Should fix a number of nightly test failures. 
llvm-svn: 138758
 2011-08-29 20:16:50 +00:00
Nadav Rotem
43912ff374 Fixes following the CR by Chris and Duncan: 
Optimize chained bitcasts of the form A->B->A.
Undo r138722 and change isEliminableCastPair to allow this case.

llvm-svn: 138756
 2011-08-29 19:58:36 +00:00
Owen Anderson
e14d6edccc Improve handling of #-0 offsets for many more pre-indexed addressing modes. 
llvm-svn: 138754
 2011-08-29 19:36:44 +00:00
Bill Wendling
6d2c747e53 Initialize CompactUnwindSection so that other targets won't use an uninitialized value. 
llvm-svn: 138752
 2011-08-29 18:25:59 +00:00
Eli Friedman
6d27cb5e01 Expand ATOMIC_LOAD and ATOMIC_STORE for architectures I don't know well enough to fix properly. 
llvm-svn: 138751
 2011-08-29 18:23:02 +00:00
Benjamin Kramer
da658378b3 Dump with dbgs() instead of printf. 
llvm-svn: 138749
 2011-08-29 18:14:17 +00:00
Benjamin Kramer
442620e4c4 Make GCC happy by adding parens. 
llvm-svn: 138748
 2011-08-29 18:14:15 +00:00
Owen Anderson
3136f0a930 Update the load-store optimizer for changes to the operands on LDR_PRE_IMM and LDRB_PRE_IMM in r138653. 
llvm-svn: 138746
 2011-08-29 17:59:41 +00:00
Bruno Cardoso Lopes
3a09888a72 Move non-intruction patterns to a more appropriate place! 
llvm-svn: 138744
 2011-08-29 17:51:24 +00:00
Owen Anderson
8719e2c1c3 Add support for parsing #-0 on non-memory-operand immediate values, and add a testcase that necessitates it. 
llvm-svn: 138739
 2011-08-29 17:17:09 +00:00
Andrew Trick
026fa4da72 Reapply r138695. Fix PassManager stack depths. 
Patch by Xiaoyi Guo!

llvm-svn: 138737
 2011-08-29 17:07:00 +00:00
Tobias Grosser
c6abc36833 Add AMDIL as valid target triple to LLVM. 
Submitted by: Villmow, Micah <Micah.Villmow@amd.com>

llvm-svn: 138734
 2011-08-29 15:44:55 +00:00
Nicolas Geoffray
74b006fe71 Remove premature previous commit. 
llvm-svn: 138725
 2011-08-28 14:52:51 +00:00
Duncan Sands
1a69e0119a Fix PR5329: pay attention to constructor/destructor priority 
when outputting them.  With this, the entire LLVM testsuite
passes when built with dragonegg.

llvm-svn: 138724
 2011-08-28 13:17:22 +00:00
Nicolas Geoffray
d30e51ca07 Encoding of instructions referencing segments has changed. Do what X86MCCodeEmitter does. 
llvm-svn: 138723
 2011-08-28 13:07:57 +00:00
Nadav Rotem
6280c8eecc Bitcasts are transitive. Bitcast-Bitcast-X becomes Bitcast-X. 
llvm-svn: 138722
 2011-08-28 11:51:08 +00:00
Nick Lewycky
a28dc138a1 Fix integer overflow bug in raw_ostream::write. This showed up as a 
non-deterministic crash in the test suite. Fixes PR10055!

llvm-svn: 138717
 2011-08-28 03:30:02 +00:00
Benjamin Kramer
6411b8f81a Silence GCC warnings and make an array const. 
llvm-svn: 138706
 2011-08-27 17:36:14 +00:00
Benjamin Kramer
70ba1d6ab4 Report failure if there are less bytes than requested in a MemoryObject. 
Before we just left the remaining bytes uninitialized. This is another step in making llvm valgrind-clean again.

llvm-svn: 138705
 2011-08-27 07:45:46 +00:00
Bill Wendling
b0412973be Auto upgrade the old EH scheme to use the new one. This is on a trial basis. If 
things to disasterously over night, this can be reverted.

llvm-svn: 138702
 2011-08-27 06:11:03 +00:00
Andrew Trick
65754eb3f7 Reverting r138695 to see if it fixes clang self host. 
llvm-svn: 138701
 2011-08-27 06:10:16 +00:00
Bill Wendling
607b3c3898 Only delete instructions once. 
llvm-svn: 138700
 2011-08-27 06:10:02 +00:00
Bill Wendling
a23e3f4f85 These splits should be done whether they are critical edges or not. 
llvm-svn: 138697
 2011-08-27 04:40:37 +00:00
Andrew Trick
e38568bc07 Fix PassManager stack depths. 
Patch by Xiaoyi Guo!

llvm-svn: 138695
 2011-08-27 02:11:03 +00:00
Owen Anderson
fd21da3506 Improve encoding support for BLX with immediat eoperands, and fix a BLX decoding bug this uncovered. 
llvm-svn: 138675
 2011-08-26 23:32:08 +00:00
Owen Anderson
9b85a034c9 Correct encoding of BL with immediate offset. 
llvm-svn: 138673
 2011-08-26 22:54:51 +00:00
Jim Grosbach
fb526fdc70 ARM assembly parsing tweak for pldw. 
llvm-svn: 138669
 2011-08-26 22:21:51 +00:00
Owen Anderson
f47325fc54 Spelling fail. 
llvm-svn: 138667
 2011-08-26 21:47:57 +00:00
Jim Grosbach
6071776c8a Thumb2 assembler parsing and encoding of IT instruction. 
This handles only the handling of the IT instruction itself, not the
processing and validation of the instructions in the IT block. That's next,
and will include encoding tests for IT itself.

llvm-svn: 138665
 2011-08-26 21:43:41 +00:00
Bill Wendling
21d93fcc0e Update the dominator tree with the correct dominator for the new 'unwind' block. 
llvm-svn: 138664
 2011-08-26 21:36:12 +00:00
Eli Friedman
9f95c7d381 Add support for generating CMPXCHG16B on x86-64 for the cmpxchg IR instruction. 
llvm-svn: 138660
 2011-08-26 21:21:21 +00:00
Bill Wendling
88b318ca91 Split the landing pad block only if it's a critical edge. Also intelligently 
split it in the other place where we're splitting critical edges.

llvm-svn: 138658
 2011-08-26 21:18:55 +00:00
Owen Anderson
e7857867d6 Fix ARM codegen breakage caused by r138653. 
llvm-svn: 138657
 2011-08-26 21:12:37 +00:00
Eric Christopher
09fd6a961c Whitespace and 80-col. 
llvm-svn: 138654
 2011-08-26 21:02:40 +00:00
Owen Anderson
af51fd9868 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. 
llvm-svn: 138653
 2011-08-26 20:43:14 +00:00
Bill Wendling
400ec8bd8f Don't sink landingpad instructions during ind-var simplification. 
llvm-svn: 138651
 2011-08-26 20:40:15 +00:00
Owen Anderson
7658e342c3 Update for feedback from Jim. 
llvm-svn: 138642
 2011-08-26 19:39:26 +00:00
Benjamin Kramer
b279f20034 ARMDisassembler: Always return a size, even when disassembling fails. 
This should fix PR10772.

llvm-svn: 138636
 2011-08-26 18:21:36 +00:00
Owen Anderson
86b11d01eb 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. 
llvm-svn: 138635
 2011-08-26 18:09:22 +00:00
Kalle Raiskila
914b04c32b Don't insert branch hint lables that are never used. 
llvm-svn: 138630
 2011-08-26 10:14:56 +00:00
Owen Anderson
87c906dabf Fix PR10755 by checking for invalid predicate codes from UNPREDICTABLE t2IT instructions when decoding their successors. 
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.

llvm-svn: 138625
 2011-08-26 06:19:51 +00:00
Craig Topper
b20cee1e19 Fix disassembling of VCVTSD2SI 
llvm-svn: 138623
 2011-08-26 04:49:29 +00:00
Andrew Trick
504187a152 LoopInfo::updateUnloop fix, and verify Block->Loop maps. 
Fixes an oversight, and adds verification to catch it in the unloop.ll tests.

llvm-svn: 138622
 2011-08-26 03:06:34 +00:00
Eli Friedman
802dd20495 Atomic load/store on ARM/Thumb. 
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.

llvm-svn: 138621
 2011-08-26 02:59:24 +00:00
Benjamin Kramer
0e1a09f38c Address review comments. 
- Reword comments.
- Allow undefined behavior interfering with undefined behavior.
- Add address space checks.

llvm-svn: 138619
 2011-08-26 02:25:55 +00:00
Benjamin Kramer
dc1c57af91 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. 
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.

llvm-svn: 138618
 2011-08-26 01:22:29 +00:00
Bill Wendling
0eb4df639e Look at only the terminators of the basic block. Also, if we're using the new EH 
scheme, return 'true' so that it doesn't try to run the old EH scheme's fixup on
the new code.

llvm-svn: 138605
 2011-08-25 23:48:11 +00:00