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2d389e8ad7
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5137 Commits

Author SHA1 Message Date
Owen Anderson
2d389e8ad7 Connect successors before creating the DAG node for the branch. This has 
no visible functionality change, but enables a future patch where node creation
will update the CFG if it decides to create an unconditional rather than a conditional branch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52067 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-07 00:00:23 +00:00
Evan Cheng
877333b99d Enable stack coloring by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52057 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-06 19:52:44 +00:00
Duncan Sands
3b3adbb745 Tighten up the abstraction slightly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52045 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-06 12:49:32 +00:00
Duncan Sands
83ec4b6711 Wrap MVT::ValueType in a struct to get type safety 
and better control the abstraction.  Rename the type
to MVT.  To update out-of-tree patches, the main
thing to do is to rename MVT::ValueType to MVT, and
rewrite expressions like MVT::getSizeInBits(VT) in
the form VT.getSizeInBits().  Use VT.getSimpleVT()
to extract a MVT::SimpleValueType for use in switch
statements (you will get an assert failure if VT is
an extended value type - these shouldn't exist after
type legalization).
This results in a small speedup of codegen and no
new testsuite failures (x86-64 linux).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52044 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-06 12:08:01 +00:00
Evan Cheng
9c3c221364 Refine stack slot interval weight computation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52040 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-06 07:54:39 +00:00
Owen Anderson
417dc2f595 Remove debugging code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52016 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-05 18:43:34 +00:00
Owen Anderson
a9efb264b0 Use the newly created helper on LiveIntervals. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52013 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-05 17:22:53 +00:00
Owen Anderson
c4dc132c8a Add a helper for constructing new live ranges that ended from an instruction to the end of its MBB. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52012 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-05 17:15:43 +00:00
Evan Cheng
fb4db316d8 Fix a memcpy lowering bug. Even though the memcpy alignment is smaller than the desired alignment, the frame destination alignment may still be larger than the desired alignment. Don't change its alignment to something smaller. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51970 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 23:37:54 +00:00
Evan Cheng
75bb734f1d Oops. Should not be enabled by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51953 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 18:09:20 +00:00
Owen Anderson
38b425020b Correctly construct live intervals for the copies we inserted into the predecessors of a block containing a PHI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51950 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 17:55:58 +00:00
Evan Cheng
7a315e865a Revert this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51949 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 17:21:44 +00:00
Evan Cheng
3f32d65912 Add a stack slot coloring pass. Not yet enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51934 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 09:18:41 +00:00
Evan Cheng
d8a46e3a74 LowerSubregs should not clobber any analysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51933 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 09:17:16 +00:00
Evan Cheng
cb74266cdb Move #include to right place. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51932 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 09:16:33 +00:00
Evan Cheng
b3dd264f9d Register if-converter pass for -debug-pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51931 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 09:15:51 +00:00
Duncan Sands
a0fcc08e65 Change packed struct layout so that field sizes 
are the same as in unpacked structs, only field
positions differ.  This only matters for structs
containing x86 long double or an apint; it may
cause backwards compatibility problems if someone
has bitcode containing a packed struct with a
field of one of those types.
The issue is that only 10 bytes are needed to
hold an x86 long double: the store size is 10
bytes, but the ABI size is 12 or 16 bytes (linux/
darwin) which comes from rounding the store size
up by the alignment.  Because it seemed silly not
to pack an x86 long double into 10 bytes in a
packed struct, this is what was done.  I now
think this was a mistake.  Reserving the ABI size
for an x86 long double field even in a packed
struct makes things more uniform: the ABI size is
now always used when reserving space for a type.
This means that developers are less likely to
make mistakes.  It also makes life easier for the
CBE which otherwise could not represent all LLVM
packed structs (PR2402).
Front-end people might need to adjust the way
they create LLVM structs - see following change
to llvm-gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51928 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 08:21:45 +00:00
Owen Anderson
3094a4c97a We need to subtract one from this index because live ranges are open at the end. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51922 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-04 00:38:56 +00:00
Scott Michel
ba12f57ebe Fix spellnig error 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51917 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-03 19:13:20 +00:00
Scott Michel
eefc845b5f Find a better place to output hex constants corresponding to integers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51904 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-03 15:39:51 +00:00
Bruno Cardoso Lopes
a8c63f0fc9 Fixed bug in bad behavior in calculateFrameObjectOffsets, 
the solution commited is different from the previous patch to
avoid int and unsigned comparison


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51899 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-03 08:46:59 +00:00
Evan Cheng
f73ff3aaf6 Do not run loop-aligner at -fast (e.g. -O0). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51898 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-03 06:56:08 +00:00
Scott Michel
4315eee376 Revert this patch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51897 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-03 06:18:19 +00:00
Dan Gohman
33b625bee4 Fold adds and subtracts of zero immediately, instead of waiting 
for dagcombine to do this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51886 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-02 22:27:05 +00:00
Scott Michel
83ccc0a50c Minor cosmetic patch so that the hex equivalent of a decimal 
constant shows up in the assembly language output. Helps with
debugging without a HP calculator having to be handy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51885 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-02 22:19:12 +00:00
Scott Michel
8bf61e8c2a Add necessary 64-bit support so that gcc frontend compiles (mostly). Current 
issue is operand promotion for setcc/select... but looks like the fundamental
stuff is implemented for CellSPU.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51884 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-02 22:18:03 +00:00
Owen Anderson
e3abb0a858 Correctly handle removed instructions at the beginning of MBBs when renumbering. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51876 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-02 17:36:36 +00:00
Dan Gohman
2830741866 Remove an unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51807 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 01:44:25 +00:00
Evan Cheng
7645e574d2 Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51793 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 22:39:32 +00:00
Owen Anderson
dbb8137c11 The coalescer doesn't need LiveVariables now that we have register use iterators. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51790 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 22:37:27 +00:00
Owen Anderson
3947e4d142 Preserve the register coallescer, and update live intervals more correctly by triggering a renumbering after phi elimination. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51780 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 18:38:26 +00:00
Dan Gohman
493e03851d Remove an unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51721 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 00:56:36 +00:00
Owen Anderson
7eec0c2433 Make the renumbering correct in the face of deleted instructions that have been removed from the LiveIntervals maps. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51714 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-29 23:01:22 +00:00
Bill Wendling
ec58498dc9 Remove <iostream>. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51704 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-29 21:29:39 +00:00
Dan Gohman
21323f3a82 Expand small memmovs using inline code. Set the X86 threshold for expanding 
memmove to a more plausible value, now that it's actually being used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51696 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-29 19:42:22 +00:00
Owen Anderson
fcc6350ac9 Revert part of my last patch that I didn't intend to commit yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51694 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-29 18:35:21 +00:00
Owen Anderson
4b5b209679 Renumbering needs to account for instruction slot offsets when performing lookups in the index maps. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51691 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-29 18:15:49 +00:00
Evan Cheng
f26ffe987c Implement vector shift up / down and insert zero with ps{rl}lq / ps{rl}ldq. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51667 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-29 08:22:04 +00:00
Bill Wendling
bd0879d7d9 Implement "AsCheapAsAMove" for some obviously cheap instructions: xor and the 
like.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51662 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-29 01:02:09 +00:00
Bill Wendling
8370d38ade Add a flag to indicate that an instruction is as cheap (or cheaper) than a move 
instruction to execute. This can be used for transformations (like two-address
conversion) to remat an instruction instead of generating a "move"
instruction. The idea is to decrease the live ranges and register pressure and
all that jazz.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51660 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-28 22:54:52 +00:00
Bill Wendling
a8db14796b Check the "isSafeToMove" predicate, which has a series of tests to make sure 
that it's safe to remat an instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51659 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-28 22:52:47 +00:00
Owen Anderson
745825f431 Remap VNInfo data as well when doing renumbering. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51658 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-28 22:40:08 +00:00
Owen Anderson
80b3ce65e2 Factor the numbering computation into a separate method, and add the slightest attempt at some renumbering logic, which is currently unused. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51652 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-28 20:54:50 +00:00
Evan Cheng
d77d4f98fb Fix PR2289: vr defined by multiple implicit_def as result of coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51648 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-28 17:40:10 +00:00
Evan Cheng
33d3d4ad40 Teach local register allocator to deal with landing pad MBB's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51647 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-28 17:22:32 +00:00
Bill Wendling
b0f65e1348 Incorporated feedback: Check that the implicitly defined operands aren't used 
before deleting the instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51609 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-27 20:40:52 +00:00
Duncan Sands
43e2a03530 Fix some constructs that gcc-4.4 warns about. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51591 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-27 11:50:51 +00:00
Bill Wendling
a16157a410 The enabling of remat in 2-address conversion breaks this test: 
Running /Users/void/llvm/llvm.src/test/CodeGen/X86/dg.exp ...
FAIL: /Users/void/llvm/llvm.src/test/CodeGen/X86/2007-11-30-LoadFolding-Bug.ll
Failed with exit(1) at line 1
while running: llvm-as < /Users/void/llvm/llvm.src/test/CodeGen/X86/2007-11-30-LoadFolding-Bug.ll | llc -march=x86 -mattr=+sse2 -stats |&  grep {1 .*folded into instructions}
child process exited abnormally

Make this conditional for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51563 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-26 05:49:49 +00:00
Bill Wendling
48f7f237ea A problem that's exposed when machine LICM is enabled. Consider this code: 
LBB1_3:   # bb
...
        xorl    %ebp, %ebp
        subl    (%ebx), %ebp
...
        incl    %ecx
        cmpl    %edi, %ecx
        jl      LBB1_3  # bb

Whe using machine LICM, LLVM converts it into:

        xorl %esi, %esi
LBB1_3: # bb
...
        movl    %esi, %ebp
        subl    (%ebx), %ebp
...
        incl    %ecx
        cmpl    %edi, %ecx
        jl      LBB1_3  # bb

Two address conversion inserts the copy instruction. However, it's cheaper to
rematerialize it, and remat helps reduce register pressure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51562 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-26 05:18:34 +00:00
Evan Cheng
0a891ed7d5 Revert 51440 as it breaks a bunch of PIC tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51513 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 23:00:04 +00:00