Duncan Sands
02b5e72ac6
GVN does simple propagation of conditions: when it sees a conditional
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branch "br i1 %x, label %if_true, label %if_false" then it replaces
"%x" with "true" in places only reachable via the %if_true arm, and
with "false" in places only reachable via the %if_false arm. Except
that actually it doesn't: if value numbering shows that %y is equal
to %x then, yes, %y will be turned into true/false in this way, but
any occurrences of %x itself are not transformed. Fix this. What's
more, it's often the case that %x is an equality comparison such as
"%x = icmp eq %A, 0", in which case every occurrence of %A that is
only reachable via the %if_true arm can be replaced with 0. Implement
this and a few other variations on this theme. This reduces the number
of lines of LLVM IR in "GCC as one big file" by 0.2%. It has a bigger
impact on Ada code, typically reducing the number of lines of bitcode
by around 0.4% by removing repeated compiler generated checks. Passes
the LLVM nightly testsuite and the Ada ACATS testsuite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141177 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-05 14:28:49 +00:00
Duncan Sands
452c58f4c4
Generalize GVN's conditional propagation logic slightly:
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it's OK for the false/true destination to have multiple
predecessors as long as the extra ones are dominated by
the branch destination.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141176 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-05 14:17:01 +00:00
Andrew Trick
0c388583fb
Missing test case for r141164.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141166 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-05 06:23:32 +00:00
Owen Anderson
2fec6c5ff1
Teach the MC to output code/data region marker labels in MachO and ELF modes. These are used by disassemblers to provide better disassembly, particularly on targets like ARM Thumb that like to intermingle data in the TEXT segment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141135 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 23:26:17 +00:00
Jim Grosbach
0ebefdf834
Tidy up formatting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141123 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 21:43:51 +00:00
Jim Grosbach
fdf6bb41a4
Un-XFAIL file. Comment out individual failing instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141117 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 21:16:42 +00:00
Jim Grosbach
20f8eb2fc1
Tidy up formatting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141115 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 20:52:57 +00:00
Jim Grosbach
e5c933848a
Un-XFAIL file. Fix incorrect CHECK lines. General format cleanup.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141114 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 20:50:05 +00:00
Jim Grosbach
dc6c93531d
Un-XFAIL file. Fix incorrect CHECK line. General format cleanup.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141113 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 20:46:49 +00:00
Jim Grosbach
100902c6da
Tidy up formatting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141111 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 20:42:35 +00:00
Jim Grosbach
0c0cf47ed5
Un-XFAIL file. Fix incorrect CHECK line.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141110 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 20:42:09 +00:00
Jim Grosbach
62ea269b9a
Un-XFAIL the file. Disable only the individual tests that aren't working yet.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141108 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 20:34:11 +00:00
David Greene
764b29e1c8
Test Operand Arguments
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Add a test to do list manipulation and pass the result as arguments.
This tests the new list element operator resolve code and provides an
example of using list manipulation to do instruction pattern
substitution.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141102 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 18:55:40 +00:00
Jim Grosbach
a02dfe7a6b
Un-XFAIL the file. Disable only the individual tests that aren't working yet.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141099 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 18:43:15 +00:00
Jim Grosbach
36db6fbe57
Tidy up. Formatting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141096 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 17:49:45 +00:00
David Dean
8a567f1fb9
Fix PR9833/PR11054 (patch provided by Patrik Hägglund)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141092 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 16:26:41 +00:00
Craig Topper
6744a17dcf
Add support in the disassembler for ignoring the L-bit on certain VEX instructions. Mark instructions that have this behavior. Fixes PR10676.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141065 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 06:30:42 +00:00
Andrew Trick
f143b79b78
LSR should avoid redundant edge splitting.
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This handles the case in which LSR rewrites an IV user that is a phi and
splits critical edges originating from a switch.
Fixes <rdar://problem/6453893> LSR is not splitting edges "nicely"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141059 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 03:50:44 +00:00
Andrew Trick
d974ea22a5
Unit test for r140919, loop unroll heuristics.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141049 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 00:07:02 +00:00
Jim Grosbach
3207e6c6b7
Tidy up. These tests are covered in the .s file tests now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141047 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 23:40:13 +00:00
Jim Grosbach
9d39036f62
ARM assembly parsing and encoding for VMOV immediate.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141046 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 23:38:36 +00:00
Jim Grosbach
68259145d9
ARM parsing/encoding for VCMP/VCMPE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141038 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 22:30:24 +00:00
Akira Hatanaka
bbb47b320d
Move CHECK after entry label.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141030 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 21:24:30 +00:00
Akira Hatanaka
43e43f7d8b
Add support for 64-bit logical NOR.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141029 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 21:23:18 +00:00
Akira Hatanaka
2d57088ff0
Add support for 64-bit count leading ones and zeros instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141028 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 21:16:50 +00:00
Jim Grosbach
5cd5ac6ad4
ARM assembly parsing and encoding for VMRS/FMSTAT.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141025 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 21:12:43 +00:00
Akira Hatanaka
dda4a07cd8
Add support for 64-bit divide instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141024 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 21:06:13 +00:00
Jim Grosbach
f8bf43ec99
Update test for 141010.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141022 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 20:58:08 +00:00
Akira Hatanaka
04d3762ff1
Add support for 64-bit integer multiply instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141017 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 20:01:11 +00:00
Jim Grosbach
c82c101147
Tidy up a bit. Formatting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141010 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 17:59:31 +00:00
Craig Topper
581fe82c84
Add support for MOVBE and RDRAND instructions for the assembler and disassembler. Includes feature flag checking, but no instrinsic support. Fixes PR10832, PR11026 and PR11027.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141007 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 17:28:23 +00:00
Rafael Espindola
25456ef74c
Add the returns_twice attribute to LLVM.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141001 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 14:45:37 +00:00
Craig Topper
04c5be9f12
Treat VEX.vvvv as a 3-bit field outside of 64-bit mode. Prevents access to registers xmm8-xmm15 outside 64-bit mode.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140997 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 08:14:29 +00:00
Craig Topper
04b0b34b3a
Test updates that were supposed to go with r140993.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140994 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 07:53:59 +00:00
Nick Lewycky
1cbae18cf6
Reapply r140979 with fix! We never did get a testcase, but careful review of the
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logic by David Meyer revealed this bug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140992 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 07:10:45 +00:00
Torok Edwin
48488a64fa
attempt to fix ocaml bindings: landing pads
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140991 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 06:41:46 +00:00
Nick Lewycky
4fcc80a486
Revert r140979 due to reports of bootstrap failure.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140980 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 05:14:59 +00:00
Nick Lewycky
8fde4f5842
Add one more case we compute a max trip count.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140979 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-03 01:03:57 +00:00
Craig Topper
82f131a017
Fix some Intel syntax disassembly issues with instructions that implicitly use AL/AX/EAX/RAX such as ADD/SUB/ADC/SUBB/XOR/OR/AND/CMP/MOV/TEST.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140974 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-02 21:08:12 +00:00
Craig Topper
146c6d77f0
Special case disassembler handling of REX.B prefix on NOP instruction to decode as XCHG R8D, EAX instead. Fixes PR10344.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140971 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-02 16:56:09 +00:00
Nick Lewycky
11357d4f40
Add a new icmp+select optz'n. Also shows off the load(cst) folding added in
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r140966.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140969 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-02 10:37:37 +00:00
Craig Topper
846a2dcada
Fix disassembling of INVEPT and INVVPID to take operands
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140955 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-01 21:20:14 +00:00
Craig Topper
e1b4a1a07e
Fix disassembler handling of CRC32 which is an odd instruction that uses 0xf2 as an opcode extension and allows the opsize prefix. This necessitated adding IC_XD_OPSIZE and IC_64BIT_XD_OPSIZE contexts. Unfortunately, this increases the size of the disassembler tables. Fixes PR10702.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140954 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-01 19:54:56 +00:00
Bill Wendling
0676d2a04c
Filecheck-ize.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140904 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-30 23:40:29 +00:00
Bill Wendling
127f410c3a
Add new line at end of file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140903 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-30 23:21:11 +00:00
Bill Wendling
e09b2a0d49
When inferring the pointer alignment, if the global doesn't have an initializer
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and the alignment is 0 (i.e., it's defined globally in one file and declared in
another file) it could get an alignment which is larger than the ABI allows for
that type, resulting in aligned moves being used for unaligned loads.
For instance, in file A.c:
struct S s;
In file B.c:
struct {
// something long
};
extern S s;
void foo() {
struct S p = s;
// ...
}
this copy is a 'memcpy' which is turned into a series of 'movaps' instructions
on X86. But this is wrong, because 'struct S' has alignment of 4, not 16.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140902 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-30 23:19:55 +00:00
David Greene
90b6e346ee
Test More Complicated Lists
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Test of indexing lists of lists of lists works. This also exercises
some operators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140884 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-30 20:59:52 +00:00
David Greene
f6c8cbba4e
Test VarListElementInit:: resolveListElementReference
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Add a TableGen test to check if indexing lists of lists works.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140883 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-30 20:59:51 +00:00
Akira Hatanaka
5773fd52ef
Remove unnecessary checking of register operands.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140872 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-30 19:18:24 +00:00
Akira Hatanaka
c7bafe9241
Add definitions of Mips64 rotate instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140870 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-30 18:51:46 +00:00