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Author SHA1 Message Date
Evan Cheng
d24165aa71 Spiller reuse test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41068 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-14 05:51:03 +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. 
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. 
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. 
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
1f808011e0 Now capable of rematerializing coalesced live intervals. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41061 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-13 23:54:16 +00:00
Evan Cheng
549f27d307 Re-implement trivial rematerialization. This allows def MIs whose live intervals that are coalesced to be rematerialized. 
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. 
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. 
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. 
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. 
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. 
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. 
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 
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
d2953866d6 test that the ptr-to-method is succefully eliminated, leaving just the vtable dispatch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41047 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-13 17:17:03 +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. 
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
Reid Spencer
f6101ac7bc Make use of the llvm-ld tool's new ability to read input from stdin to extract 
the list of link time passes to be run, just as for opt, with the
-debug-pass=Arguments option.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41040 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-13 06:19:51 +00:00
Reid Spencer
5c1b53399f Don't build llvm-stub twice. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41039 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-13 00:25:47 +00:00
Chris Lattner
ce7c40cf4b oops, forgot to commit this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41034 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-12 16:55:14 +00:00
Reid Spencer
276222a5ae Change casts from old style to new style. This helps document the details 
better, gives the compiler a chance to validate the cast and reduces warnings
if the user turns on -Wold-style-cast option.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41033 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-12 08:12:35 +00:00
Devang Patel
98147a306e Split loops and do CFG cleanup. 
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. 
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. 
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 
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
3c5b57c884 Now that llvm-ld can accept - as input from stdin, use this feature to extract 
the pass arguments that it supports.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41019 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-11 16:11:22 +00:00
Reid Spencer
ba28cb91c9 Fix a comment typo noticed by Sandro Magi. 
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. 
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. 
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. 
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
8441157f6e Fix test so it passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41012 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-10 22:20:57 +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)). 
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. 
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. 
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. 
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. 
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. 
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. 
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
Devang Patel
5ae563aaf9 Add #ifndef guard. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40991 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-10 15:58:23 +00:00
Chris Lattner
942c55bcfe add #ifndef guards 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40990 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-10 15:53:08 +00:00
Chris Lattner
71996e73d8 add Value::getNameStart/getNameLen() accessors. 
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
57a6f30125 Add a test script for counting lines. This can be used instead of the 
"| grep foo | wc -l | grep 2" idiom used by many tests, so that, for
example, tests don't mistakenly accept a count of 12 when 2 is
expected. Also, the new form is more consice: "| grep foo | count 2".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40988 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-10 15:07:05 +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 
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. 
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
Chris Lattner
4f155b4c85 memcpy with zero length is hugely expensive, so avoid it. This speeds up coallescing from 1.17s to 0.88s on siod. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40984 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-10 07:02:50 +00:00