Anton Korobeynikov
ebf0303810
Properly use const qualifiers
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41111 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15 21:12:30 +00:00
Evan Cheng
90a43c3ae3
If the source of a move is in spill slot, the reload may be folded to essentially a load from stack slot. It's ok to mark the stack slot value as available for reuse. But it should not be clobbered since the destination of the move is live.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41109 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15 20:20:34 +00:00
Anton Korobeynikov
a2780e11ef
Move ReturnAddrIndex variable to X86MachineFunctionInfo structure. This fixed
...
hard to catch bugs with retaddr lowering
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41104 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15 17:12:32 +00:00
Chris Lattner
d42b8be3da
add a note.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41103 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15 16:58:38 +00:00
Devang Patel
7375bb9c8c
Dominance frontier is now required.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41096 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15 03:34:53 +00:00
Devang Patel
5b8ec614f5
Cleanup removeBlocks.
...
Use dominance frontier to fixup incoming edges of successor blocks not domianted by DeadBB.
Use df_iterator to walk and delete basic blocks dominated by DeadBB.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41095 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15 03:31:47 +00:00
Reid Spencer
e9dd95ad9c
Remove unneeded header file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41094 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15 03:01:04 +00:00
Devang Patel
3fe4f2135a
Avoid triangle loops.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41093 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-15 02:14:55 +00:00
Devang Patel
4f5d78e9c1
Break infinite loop.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41091 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 23:59:17 +00:00
Devang Patel
4e8061cbda
Avoid nested loops at the moment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41090 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 23:53:57 +00:00
Evan Cheng
b6ca4b370e
- If a def is dead, do not spill it.
...
- If the defs of a spilled rematerializable MI are dead after the spill store is deleted, delete
the def MI as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41086 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 23:25:37 +00:00
Evan Cheng
dc5294fd83
Fix for PR1596: AdjustCopiesBackFrom() should conservatively check if any of its sub-registers may overlap with the interval of the copy that's being coalesced.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41084 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 23:19:28 +00:00
Evan Cheng
c91f0b8068
If a MI's def is remat as well as spilled, and the store is later deemed dead, mark the def operand as isDead.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41083 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 20:23:13 +00:00
Devang Patel
a6a8663894
Fix dominance frontier update while removing blocks.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41082 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 18:35:57 +00:00
Owen Anderson
31f496755a
Eliminate PHI nodes with constant values during normal GVN processing, even when
...
they're not related to eliminating a load.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41081 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 18:33:27 +00:00
Owen Anderson
36057c7834
Be more aggressive in pruning unnecessary PHI nodes when doing PHI construction.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41080 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 18:16:29 +00:00
Owen Anderson
3e75a42ee2
Make GVN iterative.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41078 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 18:04:11 +00:00
Owen Anderson
8e8278e7fe
Fix a case where GVN was failing to return true when it had, in fact, modified
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the function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41077 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 17:59:48 +00:00
Devang Patel
6d6403c287
Assert sooner. Fix wordings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41075 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 16:53:52 +00:00
Evan Cheng
fff3e191b9
If a spilled value is being reused and the use is a kill, that means there are
...
no more uses within the MBB and the spilled value isn't live out of the MBB.
Then it's safe to delete the spill store.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41069 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 09:11:18 +00:00
Evan Cheng
dc6be19859
If a rematerializable def is not deleted, i.e. it is also spilled, check if the
...
spilled value is available for reuse.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41067 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 05:42:54 +00:00
Evan Cheng
430a7b0c94
Kill info update bugs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41064 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 01:56:58 +00:00
Devang Patel
ada054a9ea
Handle last value assignments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41063 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 01:30:57 +00:00
Devang Patel
ebcb52aa89
StartValue is already calculated.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41062 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-14 00:15:45 +00:00
Evan Cheng
549f27d307
Re-implement trivial rematerialization. This allows def MIs whose live intervals that are coalesced to be rematerialized.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41060 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 23:45:17 +00:00
Evan Cheng
12914380ed
Fix a typo pointd out by Maarten ter Huurne.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41059 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 23:27:11 +00:00
Devang Patel
21eca2a9cf
Preserve simple analysis.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41054 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 22:22:13 +00:00
Devang Patel
fc4c5f82f8
Preserve dominator info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41053 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 22:13:24 +00:00
Devang Patel
441c5ee6cf
Add methods to erase basic block entry.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41052 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 22:10:29 +00:00
Devang Patel
6acc9e6b7b
If NewBB dominates DestBB then DestBB is not part of NewBB's dominance frontier.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41051 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 21:59:17 +00:00
Chris Lattner
17f218e001
move assertion into mutex guard, a partial fix for PR1606.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41050 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 20:08:16 +00:00
Dan Gohman
badb2d23d1
When x86 addresses matching exceeds its recursion limit, check to
...
see if the base register is already occupied before assuming it can be
used. This fixes bogus code generation in the accompanying testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41049 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 20:03:06 +00:00
Chris Lattner
a45d9a15ba
Fix PR1607
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41048 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 18:42:37 +00:00
Chris Lattner
fe9d82a71b
Constant fold: getelementptr (i8* inttoptr (i64 1 to i8*), i32 -1)
...
Into: inttoptr (i64 0 to i8*) -> null
This occurs in the example in PR1602. With this fixed, we now compile
the example in PR1602 into fully "devirtualized" code:
define void @_Z1g1S(%struct.S* noalias %s) {
entry: %tmp131415 = getelementptr %struct.S* %s, i32 0, i32 0 ; <i32 (...)***> [#uses=1] %tmp16 = load i32 (...)*** %tmp131415, align 4 ; <i32 (...)**> [#uses=1]
%tmp26277 = load i32 (...)** %tmp16 ; <i32 (...)*> [#uses=1]
%tmp2829 = bitcast i32 (...)* %tmp26277 to void (%struct.S*)* ; <void (%struct.S*)*> [#uses=1]
tail call void %tmp2829( %struct.S* %s )
ret void
}
This still has the vtable dispatch (as required) but does not have any pointer
to method cruft left.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41046 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 17:09:08 +00:00
Evan Cheng
6047dd9280
Kill info update bugs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41043 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-13 07:12:23 +00:00
Devang Patel
98147a306e
Split loops and do CFG cleanup.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41029 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-12 07:02:51 +00:00
Reid Spencer
9626a9c700
Remove unused variables.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41028 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-12 04:45:36 +00:00
Evan Cheng
ccb36a4f1b
No need to remove dead range from soon-to-be-dead live interval. Its val# may be out of whack.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41024 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-12 01:26:19 +00:00
Chris Lattner
001f7534e0
constant fold ptrtoint(inttoptr) with target data when available. This allows
...
us to fold the entry block of PR1602 to false instead of:
br i1 icmp eq (i32 and (i32 ptrtoint (void (%struct.S*)* inttoptr (i64
1 to void (%struct.S*)*) to i32), i32 1), i32 0), label %cond_next, label
%cond_true
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41023 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-11 23:49:01 +00:00
Chris Lattner
8d2e88806b
Transform a load from an undef/zero global into an undef/global even if we
...
have complex pointer manipulation going on. This allows us to compile
stuff like this:
__m128i foo(__m128i x){
static const unsigned int c_0[4] = { 0, 0, 0, 0 };
__m128i v_Zero = _mm_loadu_si128((__m128i*)c_0);
x = _mm_unpacklo_epi8(x, v_Zero);
return x;
}
into:
_foo:
xorps %xmm1, %xmm1
punpcklbw %xmm1, %xmm0
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41022 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-11 18:48:48 +00:00
Chris Lattner
ace2e8ad0c
expand a note
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41021 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-11 18:19:07 +00:00
Chris Lattner
384f4a94f8
With evan's explicit flag representation, hopefully we will finally be
...
able to 3-addressify away stuff like this:
movl %ecx, %eax
decl %eax
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41020 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-11 18:16:46 +00:00
Reid Spencer
ba28cb91c9
Fix a comment typo noticed by Sandro Magi.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41018 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-11 15:57:56 +00:00
Bill Wendling
01284b4d55
64-bit SSSE3 ops that use MMX registers don't require 16-byte alignment.
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Make a 'memop' pattern just for them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41017 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-11 09:52:53 +00:00
Evan Cheng
4f8ff168de
Code to maintain kill information during register coalescing.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41016 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-11 00:59:19 +00:00
Christopher Lamb
a1eb155e52
Use subregs to improve any_extend code generation when feasible.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41013 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 22:22:41 +00:00
Christopher Lamb
c59e52108b
Increase efficiency of sign_extend_inreg by using subregisters for truncation. As the README suggests sign_extend_subreg is selected to (sext(trunc)).
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41010 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 21:48:46 +00:00
Christopher Lamb
6f41435879
Edit README in light of previous LEA16 commit.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41009 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 21:29:05 +00:00
Christopher Lamb
b81337117c
Add 2-addr to 3-addr promotion code that allows 32-bit LEA to be used via subregisters when 16-bit LEA is disabled.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41007 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 21:18:25 +00:00
Christopher Lamb
8b165731bc
Move isSubRegOf into MRegisterInfo. Fix a missed move elimination in LowerSubregs and add more debugging output there.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41005 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 21:11:55 +00:00
Devang Patel
6b4af744b8
Do not overuse std::string. Pass around char * directly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41001 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 18:29:32 +00:00
Devang Patel
423c8b29b8
Clone loop.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40998 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 18:07:13 +00:00
Devang Patel
4bc2a0b420
Add utility to clone loops.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40997 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 17:59:47 +00:00
Chris Lattner
71996e73d8
add Value::getNameStart/getNameLen() accessors.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40989 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 15:34:35 +00:00
Dan Gohman
25ac7e8364
Fix EXTRACT_ELEMENT, EXTRACT_SUBVECTOR, and EXTRACT_VECTOR_ELT to
...
use an intptr ValueType instead of i32 for the index operand in
getCopyToParts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40987 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 14:59:38 +00:00
Rafael Espindola
594d37e21a
propagate struct size and alignment of byval arguments to the DAG
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40986 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 14:44:42 +00:00
Bill Wendling
ae9671b838
For kicks, I though it would be fun to use the correct opcode.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40985 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 09:00:17 +00:00
Bill Wendling
76d708b76f
Adding SSSE3 intrinsics.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40982 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 06:22:27 +00:00
Chris Lattner
fc23bc799d
minor simplifications.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40981 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 06:22:25 +00:00
Chris Lattner
417efc897b
avoid copying strings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40980 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 06:17:04 +00:00
Devang Patel
acb8c09e27
Remove unncessary duplication.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40979 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 00:59:03 +00:00
Devang Patel
23a19f82a7
Calculate exit and start value of true loop and false loop respectively.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40978 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 00:53:35 +00:00
Devang Patel
bacf5193cf
ExitCondition and Induction variable are loop constraints
...
not split condition constraints.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40977 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 00:33:50 +00:00
Chris Lattner
b31e91cb16
unbreak the build
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40976 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 23:55:17 +00:00
Evan Cheng
a86e347f02
Bug fix. ~1U marks the val# dead.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40975 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 23:14:39 +00:00
Dale Johannesen
ebbc95da49
Patch 10 for long double. Doing constants right needs expanding ConstantFP
...
to handle values bigger than double. If we assume host==target and host
long double works correctly, this is not too bad, but we don't want to
have that limitation longterm. I could implement accepting double
constants as long double or something like that, which would lead to
incorrect codegen with no errors; the more I think about that the worse
it seems. Rather than do such a hack that would be backed out later,
I'm settling for giving reasonable error messages, for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40974 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 22:51:36 +00:00
Evan Cheng
a3231ba237
Temporarily backing out this change until we know why some dejagnu tests are failing.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40973 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 22:25:35 +00:00
Evan Cheng
f7ef26e701
divb / mulb outputs to ah. Under x86-64 it's not legal to read ah if the instruction requires a rex prefix (i.e. outputs to r8b, etc.). So issue shift right by 8 on AX and then truncate it to 8 bits instead.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40972 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 21:59:35 +00:00
Chris Lattner
f2369f2042
when we see a unaligned load from an insufficiently aligned global or
...
alloca, increase the alignment of the load, turning it into an aligned load.
This allows us to compile:
#include <xmmintrin.h>
__m128i foo(__m128i x){
static const unsigned int c_0[4] = { 0, 0, 0, 0 };
__m128i v_Zero = _mm_loadu_si128((__m128i*)c_0);
x = _mm_unpacklo_epi8(x, v_Zero);
return x;
}
into:
_foo:
punpcklbw _c_0.5944, %xmm0
ret
.data
.lcomm _c_0.5944,16,4 # c_0.5944
instead of:
_foo:
movdqu _c_0.5944, %xmm1
punpcklbw %xmm1, %xmm0
ret
.data
.lcomm _c_0.5944,16,2 # c_0.5944
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40971 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 19:05:49 +00:00
Evan Cheng
a333b41af9
GR16_ sub-register class should be GR8_, not GR8. That is, it should only be 8-bit registers in 32-bit mode. Ditto for GR32_.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40970 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 18:05:17 +00:00
Dale Johannesen
ab081c7195
Update per review comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40965 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 17:27:48 +00:00
Owen Anderson
9528f11481
Make NonLocal and None const in the right way. :-)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40961 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 04:42:44 +00:00
Devang Patel
c9d123dca9
Traverse loop blocks' terminators to find split candidates.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40960 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 01:39:01 +00:00
Dale Johannesen
5411a3937f
long double 9 of N. This finishes up the X86-32 bits
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(constants are still not handled). Adds ConvertActions
to control fp-to-fp conversions (these are currently
defaulted for all other targets, so no changes there).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40958 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 01:04:01 +00:00
Dale Johannesen
48bd15ed72
Fix arguments for some Altivec instructions. From SWB.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40957 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 00:49:19 +00:00
Scott Michel
c1513d24ea
If a target really needs to custom lower constants, it should be allowed
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to do so.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40955 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 23:23:31 +00:00
Owen Anderson
642a9e3436
Add more comments to memdep.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40953 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 22:26:03 +00:00
Devang Patel
9704fcf505
Add cost analysis.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40952 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 22:25:28 +00:00
Owen Anderson
80b1f09693
Make memdep fit in 80 cols.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40950 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 22:01:54 +00:00
Devang Patel
787a713bb2
Preserve dom info while processing one iteration loop.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40947 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 21:39:47 +00:00
Owen Anderson
8cad423d94
Change the None and NonLocal markers in memdep to be const.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40946 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 21:39:39 +00:00
Devang Patel
9021c7001e
Clear split info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40944 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 21:18:27 +00:00
Devang Patel
71554b8e3c
Handle multiple split conditions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40941 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 21:02:17 +00:00
Reid Spencer
2372ccc111
Make getSTDIN return null if the standard input is empty, as the header file
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documentation implies and as its uses depend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40939 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 20:01:58 +00:00
Reid Spencer
53424ad141
Allow the filename "-" to be a place holder for stdin. This allows directing
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stdin through llvm-ld and llvm-link.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40938 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 19:52:29 +00:00
Owen Anderson
838014ee5b
Global values also don't undead-ify pointers in our dead alloca's set.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40936 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 19:12:31 +00:00
Owen Anderson
362bb52108
Make handleEndBlock significantly faster with one trivial improvement,
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and one hack to avoid hitting a bad case when the alias analysis is imprecise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40935 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 18:38:28 +00:00
Owen Anderson
df359c264e
Small improvement: if a function doesn't access memory, we don't need to scan
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it for potentially undeading pointers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40933 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 17:58:56 +00:00
Owen Anderson
bb3abf41a8
Add some comments, remove a dead argument, and simplify some control flow.
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No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40932 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 17:50:09 +00:00
Chris Lattner
79e038a16d
eliminate redundant conditions from the signless types conversion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40927 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 16:19:57 +00:00
Chris Lattner
a099b6c7bb
Handle functions with no name better.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40926 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 16:07:23 +00:00
Evan Cheng
24c2e5cf7e
Adding kill info to val#.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40925 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 07:03:29 +00:00
Chris Lattner
c5f6a1f9d6
significantly speed up constant folding of calls (and thus all clients that use
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ConstantFoldInstruction on calls) by avoiding Value::getName(). getName() constructs
and returns an std::string, which does heap allocation stuff. This slightly speeds up
instcombine.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40924 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 06:55:43 +00:00
Chris Lattner
de0e42d3c0
Speed up updateDFSNumbers with two observations:
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1. domtree is a tree, not a graph. There is no need to avoid revisiting nodes with a set.
2. the worklist can contain the child iterator pointers so we don't get N^2 rescanning of children.
This speeds up updateDFSNumbers significantly, making it basically free. On the testcase in PR1432,
this speeds up loopsimplify by another 3x, dropping it from the 12th most expensive pass to the to
the 30th. :) It used to be #1 .
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40923 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 06:24:20 +00:00
Owen Anderson
c182f17aed
A few more small cleanups.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40922 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 06:06:02 +00:00
Evan Cheng
a141cfe5b2
Clean up and bug fix.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40921 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 05:56:18 +00:00
Chris Lattner
3e089ae0b8
reimplement dfs number computation to be significantly faster. This speeds up
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natural loop canonicalization (which does many cfg xforms) by 4.3x, for
example. This also fixes a bug in postdom dfnumber computation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40920 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 05:51:24 +00:00
Owen Anderson
6ca4cb3755
First round of cleanups from Chris' feedback.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40919 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 04:52:29 +00:00
Evan Cheng
8df786012d
- Each val# can have multiple kills.
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- Fix some minor bugs related to special markers on val# def. ~0U means
undefined, ~1U means dead val#.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40916 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 03:00:28 +00:00
Devang Patel
6a2bfdaab6
Embrace patch review feedback.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40915 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 01:51:27 +00:00
Evan Cheng
51cbf3c980
Remove a dead assertion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40914 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08 01:00:21 +00:00
Evan Cheng
a8d94f1315
- LiveInterval value#'s now have 3 components: def instruction #,
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kill instruction #, and source register number (iff the value# is defined by a
copy).
- Now def instruction # is set for every value#, not just for copy defined ones.
- Update some outdated code related inactive live ranges.
- Kill info not yet set. That's next patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40913 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 23:49:57 +00:00
Devang Patel
002fe25dd7
Fix new compare instruction's signness. Caught by Chris during review.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40912 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 23:17:52 +00:00
Owen Anderson
a37226af81
Don't insert nearly as many redundant phi nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40909 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 23:12:31 +00:00
Dale Johannesen
84109cd015
Fix spelling of mtvscr and mfvscr.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40908 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 23:08:00 +00:00
Dale Johannesen
cdbe4d3ebe
Long double patch 8 of N: make it partially work in
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SSE mode (all but conversions <-> other FP types, I think):
>>Do not mark all-80-bit operations as "Requires[FPStack]"
(which really means "not SSE").
>>Refactor load-and-extend to facilitate this.
>>Update comments.
>>Handle long double in SSE when computing FP_REG_KILL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40906 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 20:29:26 +00:00
Devang Patel
8431a1cbcc
Use eraseFromParent().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40903 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 17:45:35 +00:00
David Greene
32fe3de0fe
Fix comment typo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40898 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 16:52:03 +00:00
David Greene
8ff18e9c99
Fix GLIBCXX_DEBUG error triggered by incrementing erased iterator.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40897 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 16:44:38 +00:00
David Greene
7e23146ab9
Add a missing forward declaration.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40896 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 16:34:05 +00:00
Evan Cheng
0ff94f7fcc
Initial JIT support for ARM by Raul Fernandes Herbster.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40887 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 01:37:15 +00:00
Dale Johannesen
a996d52e37
Long double patch 7 of N, unless I lost count:).
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Last x87 bits for full functionality (not
thoroughly tested, and long doubles do not work
in SSE modes at all - use -mcpu=i486 for now)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40886 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 01:17:37 +00:00
Owen Anderson
dbbe816757
Clean up a bunch of caching stuff in memdep. This reduces the time to run GVN
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on 403.gcc from ~15s to ~10s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40884 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 00:33:45 +00:00
Devang Patel
fee76bd9ba
Begin loop index split pass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40883 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 00:25:56 +00:00
Owen Anderson
8f35315798
Improve the accuracy of memdep for determining the dependencies of loads.
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This brings GVN to parity with GCSE+LoadVN.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40882 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 23:26:03 +00:00
Dale Johannesen
9989a65693
Replace 4-line function with 10-line version per review comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40881 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 22:10:35 +00:00
Dale Johannesen
27f92be8b7
Move lengthy conditional down 1 level per review comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40878 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 21:48:35 +00:00
Dale Johannesen
6a30811d5c
Get X86 long double calling convention to work
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(on Darwin, anyway). Fix some table omissions for
LD arithmetic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40877 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 21:31:06 +00:00
Chris Lattner
0275cffa97
regenerate
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40875 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 21:00:46 +00:00
Chris Lattner
6df20efcc3
Fix PR1577, a crash on invalid bug.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40874 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 21:00:37 +00:00
Chandler Carruth
a583990ec8
This resolves a regression of BasicAA which failed to find any memory information for overloaded intrinsics (PR1600). This resolves that issue, and improves the matching scheme to use a BitVector rather than a binary search.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40872 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 20:57:16 +00:00
Nick Lewycky
f947b3edb5
It's safe to fold not of fcmp.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40870 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 20:04:16 +00:00
Dale Johannesen
88835735f4
Make 80-bit store maintain simulated FP stack correctly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40868 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 19:50:32 +00:00
Nick Lewycky
d6dac0eebc
Let scalar-evolution analyze loops with an unsigned comparison for the exit
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condition. Fixes 1597.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40867 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 19:21:00 +00:00
Nick Lewycky
06323bfe03
Don't assume it's safe to transform a loop just because it's dominated by any
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comparison. Fixes bug 1598.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40866 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 18:33:46 +00:00
Chris Lattner
914ce4508d
Fix a regression compiling 2005-05-11-Popcount-ffs-fls with the CBE,
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introduced by chandler's patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40864 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 16:36:18 +00:00
Christopher Lamb
98363225a3
Implement review feedback. No functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40863 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 16:33:56 +00:00
David Greene
242be6e0ff
Make this code more efficient.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40861 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 15:09:17 +00:00
Chris Lattner
3589df8013
remove some dead lines
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40859 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 06:21:06 +00:00
Chris Lattner
7ed54a0ece
1. Random tidiness cleanups
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2. Make domtree printing print dfin/dfout #'s
3. Fix the Transforms/LoopSimplify/2004-04-13-LoopSimplifyUpdateDomFrontier.ll failure from last night (in DominanceFrontier::splitBlock).
w.r.t. #3 , my patches last night happened to expose the bug, but this
has been broken since Owen's r35839 patch to LoopSimplify. The code
was subsequently moved over from LoopSimplify into Dominators, carrying
the latent bug. Fun stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40858 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06 06:19:47 +00:00
Reid Spencer
181b6c9cb5
Fix minor doxygen nits.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40854 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 20:06:04 +00:00
Reid Spencer
81a7572f1a
Silence some warnings from doxygen about @param argument name not matching the
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actual argument name of the documented function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40851 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 19:35:22 +00:00
Reid Spencer
c69b0dd19d
Escape some escapes that confuse doxygen.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40850 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 19:33:11 +00:00
Reid Spencer
daa10a46b2
Fix a doxygen directive.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40849 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 19:27:01 +00:00
Dale Johannesen
59a587337e
Long double patch 4 of N: initial x87 implementation.
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Lots of problems yet but some simple things work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40847 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 18:49:15 +00:00
Chris Lattner
e76fad2ceb
shorten this name
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40843 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 18:45:33 +00:00
Chris Lattner
a9ff5eb76e
at the end of instcombine, explicitly clear WorklistMap.
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This shrinks it down to something small. On the testcase
from PR1432, this speeds up instcombine from 0.7959s to 0.5000s,
(59%)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40840 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 08:47:58 +00:00
Chris Lattner
8c5287086c
Upgrade BasicAliasAnalysis::getModRefBehavior to not call Value::getName,
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which dynamically allocates the string result. This speeds up dse on the
testcase from PR1432 from 0.3781s to 0.1804s (2.1x).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40838 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 07:50:06 +00:00
Chris Lattner
42e4bdf257
When clearing a SmallPtrSet, if the set had a huge capacity, but the
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contents of the set were small, deallocate and shrink the set. This
avoids having us to memset as much data, significantly speeding up
some pathological cases. For example, this speeds up the verifier
from 0.3899s to 0.0763 (5.1x) on the testcase from PR1432 in a
release build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40837 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 07:32:14 +00:00
Chris Lattner
a31965301d
Fix an iterator invalidation bug I induced.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40830 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 00:24:30 +00:00
Chris Lattner
2f0d1ea864
Switch some std::sets to SmallPtrSet. This speeds up
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domtree by 10% and postdomtree by 17%
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40829 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 00:15:57 +00:00
Chris Lattner
7ae8c4c810
Switch DomTreeNode::assignDFSNumber from using a std::set to using
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a smallptrset. This speeds up domtree by about 15% and postdomtree by 20%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40828 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 00:10:08 +00:00
Chris Lattner
e93e311981
Switch the internal "Info" map from an std::map to a DenseMap. This
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speeds up idom by about 45% and postidom by about 33%.
Some extra precautions must be taken not to invalidate densemap iterators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40827 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 00:02:00 +00:00
Chris Lattner
0a5f83c22c
switch the DomTreeNodes and IDoms maps in idom/postidom to a
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DenseMap instead of an std::map. This speeds up postdomtree
by about 25% and domtree by about 23%. It also speeds up clients,
for example, domfrontier by 11%, mem2reg by 4% and ADCE by 6%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40826 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04 23:48:07 +00:00
Chris Lattner
f12f8def39
rewrite the code used to construct pruned SSA form with the IDF method.
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In the old way, we computed and inserted phi nodes for the whole IDF of
the definitions of the alloca, then computed which ones were dead and
removed them.
In the new method, we first compute the region where the value is live,
and use that information to only insert phi nodes that are live. This
eliminates the need to compute liveness later, and stops the algorithm
from inserting a bunch of phis which it then later removes.
This speeds up the testcase in PR1432 from 2.00s to 0.15s (14x) in a
release build and 6.84s->0.50s (14x) in a debug build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40825 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04 22:50:14 +00:00
Chris Lattner
0ec8df3d5f
Factor out a whole bunch of code into it's own method.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40824 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04 21:14:29 +00:00
Chris Lattner
127ed3c929
Use getNumPreds(BB) instead of computing them manually. This is a very small but
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measurable speedup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40823 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04 21:06:15 +00:00
Chris Lattner
1e76af3011
Change the rename pass to be "tail recursive", only adding N-1 successors
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to the worklist, and handling the last one with a 'tail call'. This speeds
up PR1432 from 2.0578s to 2.0012s (2.8%)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40822 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04 20:40:27 +00:00
Chris Lattner
e7b653dabe
cache computation of #preds for a BB. This speeds up
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mem2reg from 2.0742->2.0522s on PR1432.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40821 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04 20:24:50 +00:00
Chris Lattner
384c7e0436
reserve operand space for phi nodes when we insert them.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40820 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04 20:14:34 +00:00