oota-llvm.git
17 years agoAssert sooner. Fix wordings.
Devang Patel [Tue, 14 Aug 2007 16:53:52 +0000 (16:53 +0000)]
Assert sooner. Fix wordings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41075 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoNo need to use iterator to erase basic block.
Devang Patel [Tue, 14 Aug 2007 16:53:24 +0000 (16:53 +0000)]
No need to use iterator to erase basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41074 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agotcl seems to hate |& for some reason.
Chris Lattner [Tue, 14 Aug 2007 16:19:35 +0000 (16:19 +0000)]
tcl seems to hate |& for some reason.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41073 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoswitch this to use fastcc to avoid fpstack traffic on x86-32. Switch to
Chris Lattner [Tue, 14 Aug 2007 16:14:10 +0000 (16:14 +0000)]
switch this to use fastcc to avoid fpstack traffic on x86-32.  Switch to
using the count script instead of wc -l

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41072 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoUpdate test case. A spill should now be deleted.
Evan Cheng [Tue, 14 Aug 2007 09:16:00 +0000 (09:16 +0000)]
Update test case. A spill should now be deleted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41070 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoIf a spilled value is being reused and the use is a kill, that means there are
Evan Cheng [Tue, 14 Aug 2007 09:11:18 +0000 (09:11 +0000)]
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

17 years agoSpiller reuse test case.
Evan Cheng [Tue, 14 Aug 2007 05:51:03 +0000 (05:51 +0000)]
Spiller reuse test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41068 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoIf a rematerializable def is not deleted, i.e. it is also spilled, check if the
Evan Cheng [Tue, 14 Aug 2007 05:42:54 +0000 (05:42 +0000)]
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

17 years agoKill info update bugs.
Evan Cheng [Tue, 14 Aug 2007 01:56:58 +0000 (01:56 +0000)]
Kill info update bugs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41064 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoHandle last value assignments.
Devang Patel [Tue, 14 Aug 2007 01:30:57 +0000 (01:30 +0000)]
Handle last value assignments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41063 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoStartValue is already calculated.
Devang Patel [Tue, 14 Aug 2007 00:15:45 +0000 (00:15 +0000)]
StartValue is already calculated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41062 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoNow capable of rematerializing coalesced live intervals.
Evan Cheng [Mon, 13 Aug 2007 23:54:16 +0000 (23:54 +0000)]
Now capable of rematerializing coalesced live intervals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41061 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoRe-implement trivial rematerialization. This allows def MIs whose live intervals...
Evan Cheng [Mon, 13 Aug 2007 23:45:17 +0000 (23:45 +0000)]
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

17 years agoFix a typo pointd out by Maarten ter Huurne.
Evan Cheng [Mon, 13 Aug 2007 23:27:11 +0000 (23:27 +0000)]
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

17 years agoPreserve simple analysis.
Devang Patel [Mon, 13 Aug 2007 22:22:13 +0000 (22:22 +0000)]
Preserve simple analysis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41054 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoPreserve dominator info.
Devang Patel [Mon, 13 Aug 2007 22:13:24 +0000 (22:13 +0000)]
Preserve dominator info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41053 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdd methods to erase basic block entry.
Devang Patel [Mon, 13 Aug 2007 22:10:29 +0000 (22:10 +0000)]
Add methods to erase basic block entry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41052 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoIf NewBB dominates DestBB then DestBB is not part of NewBB's dominance frontier.
Devang Patel [Mon, 13 Aug 2007 21:59:17 +0000 (21:59 +0000)]
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

17 years agomove assertion into mutex guard, a partial fix for PR1606.
Chris Lattner [Mon, 13 Aug 2007 20:08:16 +0000 (20:08 +0000)]
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

17 years agoWhen x86 addresses matching exceeds its recursion limit, check to
Dan Gohman [Mon, 13 Aug 2007 20:03:06 +0000 (20:03 +0000)]
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

17 years agoFix PR1607
Chris Lattner [Mon, 13 Aug 2007 18:42:37 +0000 (18:42 +0000)]
Fix PR1607

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41048 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agotest that the ptr-to-method is succefully eliminated, leaving just the vtable dispatch.
Chris Lattner [Mon, 13 Aug 2007 17:17:03 +0000 (17:17 +0000)]
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

17 years agoConstant fold: getelementptr (i8* inttoptr (i64 1 to i8*), i32 -1)
Chris Lattner [Mon, 13 Aug 2007 17:09:08 +0000 (17:09 +0000)]
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

17 years agoKill info update bugs.
Evan Cheng [Mon, 13 Aug 2007 07:12:23 +0000 (07:12 +0000)]
Kill info update bugs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41043 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoMake use of the llvm-ld tool's new ability to read input from stdin to extract
Reid Spencer [Mon, 13 Aug 2007 06:19:51 +0000 (06:19 +0000)]
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

17 years agoDon't build llvm-stub twice.
Reid Spencer [Mon, 13 Aug 2007 00:25:47 +0000 (00:25 +0000)]
Don't build llvm-stub twice.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41039 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agooops, forgot to commit this.
Chris Lattner [Sun, 12 Aug 2007 16:55:14 +0000 (16:55 +0000)]
oops, forgot to commit this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41034 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoChange casts from old style to new style. This helps document the details
Reid Spencer [Sun, 12 Aug 2007 08:12:35 +0000 (08:12 +0000)]
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

17 years agoSplit loops and do CFG cleanup.
Devang Patel [Sun, 12 Aug 2007 07:02:51 +0000 (07:02 +0000)]
Split loops and do CFG cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41029 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoRemove unused variables.
Reid Spencer [Sun, 12 Aug 2007 04:45:36 +0000 (04:45 +0000)]
Remove unused variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41028 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoNo need to remove dead range from soon-to-be-dead live interval. Its val# may be...
Evan Cheng [Sun, 12 Aug 2007 01:26:19 +0000 (01:26 +0000)]
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

17 years agoconstant fold ptrtoint(inttoptr) with target data when available. This allows
Chris Lattner [Sat, 11 Aug 2007 23:49:01 +0000 (23:49 +0000)]
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

17 years agoTransform a load from an undef/zero global into an undef/global even if we
Chris Lattner [Sat, 11 Aug 2007 18:48:48 +0000 (18:48 +0000)]
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

17 years agoexpand a note
Chris Lattner [Sat, 11 Aug 2007 18:19:07 +0000 (18:19 +0000)]
expand a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41021 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoWith evan's explicit flag representation, hopefully we will finally be
Chris Lattner [Sat, 11 Aug 2007 18:16:46 +0000 (18:16 +0000)]
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

17 years agoNow that llvm-ld can accept - as input from stdin, use this feature to extract
Reid Spencer [Sat, 11 Aug 2007 16:11:22 +0000 (16:11 +0000)]
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

17 years agoFix a comment typo noticed by Sandro Magi.
Reid Spencer [Sat, 11 Aug 2007 15:57:56 +0000 (15:57 +0000)]
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

17 years ago64-bit SSSE3 ops that use MMX registers don't require 16-byte alignment.
Bill Wendling [Sat, 11 Aug 2007 09:52:53 +0000 (09:52 +0000)]
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

17 years agoCode to maintain kill information during register coalescing.
Evan Cheng [Sat, 11 Aug 2007 00:59:19 +0000 (00:59 +0000)]
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

17 years agoUse subregs to improve any_extend code generation when feasible.
Christopher Lamb [Fri, 10 Aug 2007 22:22:41 +0000 (22:22 +0000)]
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

17 years agoFix test so it passes.
Christopher Lamb [Fri, 10 Aug 2007 22:20:57 +0000 (22:20 +0000)]
Fix test so it passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41012 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoIncrease efficiency of sign_extend_inreg by using subregisters for truncation. As...
Christopher Lamb [Fri, 10 Aug 2007 21:48:46 +0000 (21:48 +0000)]
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

17 years agoEdit README in light of previous LEA16 commit.
Christopher Lamb [Fri, 10 Aug 2007 21:29:05 +0000 (21:29 +0000)]
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

17 years agoAdd 2-addr to 3-addr promotion code that allows 32-bit LEA to be used via subregister...
Christopher Lamb [Fri, 10 Aug 2007 21:18:25 +0000 (21:18 +0000)]
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

17 years agoMove isSubRegOf into MRegisterInfo. Fix a missed move elimination in LowerSubregs...
Christopher Lamb [Fri, 10 Aug 2007 21:11:55 +0000 (21:11 +0000)]
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

17 years agoDo not overuse std::string. Pass around char * directly.
Devang Patel [Fri, 10 Aug 2007 18:29:32 +0000 (18:29 +0000)]
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

17 years agoClone loop.
Devang Patel [Fri, 10 Aug 2007 18:07:13 +0000 (18:07 +0000)]
Clone loop.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40998 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdd utility to clone loops.
Devang Patel [Fri, 10 Aug 2007 17:59:47 +0000 (17:59 +0000)]
Add utility to clone loops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40997 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdd #ifndef guard.
Devang Patel [Fri, 10 Aug 2007 15:58:23 +0000 (15:58 +0000)]
Add #ifndef guard.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40991 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoadd #ifndef guards
Chris Lattner [Fri, 10 Aug 2007 15:53:08 +0000 (15:53 +0000)]
add #ifndef guards

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40990 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoadd Value::getNameStart/getNameLen() accessors.
Chris Lattner [Fri, 10 Aug 2007 15:34:35 +0000 (15:34 +0000)]
add Value::getNameStart/getNameLen() accessors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40989 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdd a test script for counting lines. This can be used instead of the
Dan Gohman [Fri, 10 Aug 2007 15:07:05 +0000 (15:07 +0000)]
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

17 years agoFix EXTRACT_ELEMENT, EXTRACT_SUBVECTOR, and EXTRACT_VECTOR_ELT to
Dan Gohman [Fri, 10 Aug 2007 14:59:38 +0000 (14:59 +0000)]
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

17 years agopropagate struct size and alignment of byval arguments to the DAG
Rafael Espindola [Fri, 10 Aug 2007 14:44:42 +0000 (14:44 +0000)]
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

17 years agoFor kicks, I though it would be fun to use the correct opcode.
Bill Wendling [Fri, 10 Aug 2007 09:00:17 +0000 (09:00 +0000)]
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

17 years agomemcpy with zero length is hugely expensive, so avoid it. This speeds up coallescing...
Chris Lattner [Fri, 10 Aug 2007 07:02:50 +0000 (07:02 +0000)]
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

17 years agosmall speedup in the case where a smallvector is default ctor'd from
Chris Lattner [Fri, 10 Aug 2007 06:54:38 +0000 (06:54 +0000)]
small speedup in the case where a smallvector is default ctor'd from
an empty vector.  This speeds up llc slightly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40983 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdding SSSE3 intrinsics.
Bill Wendling [Fri, 10 Aug 2007 06:22:27 +0000 (06:22 +0000)]
Adding SSSE3 intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40982 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agominor simplifications.
Chris Lattner [Fri, 10 Aug 2007 06:22:25 +0000 (06:22 +0000)]
minor simplifications.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40981 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoavoid copying strings.
Chris Lattner [Fri, 10 Aug 2007 06:17:04 +0000 (06:17 +0000)]
avoid copying strings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40980 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoRemove unncessary duplication.
Devang Patel [Fri, 10 Aug 2007 00:59:03 +0000 (00:59 +0000)]
Remove unncessary duplication.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40979 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoCalculate exit and start value of true loop and false loop respectively.
Devang Patel [Fri, 10 Aug 2007 00:53:35 +0000 (00:53 +0000)]
Calculate exit and start value of true loop and false loop respectively.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40978 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoExitCondition and Induction variable are loop constraints
Devang Patel [Fri, 10 Aug 2007 00:33:50 +0000 (00:33 +0000)]
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

17 years agounbreak the build
Chris Lattner [Thu, 9 Aug 2007 23:55:17 +0000 (23:55 +0000)]
unbreak the build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40976 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoBug fix. ~1U marks the val# dead.
Evan Cheng [Thu, 9 Aug 2007 23:14:39 +0000 (23:14 +0000)]
Bug fix. ~1U marks the val# dead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40975 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoPatch 10 for long double. Doing constants right needs expanding ConstantFP
Dale Johannesen [Thu, 9 Aug 2007 22:51:36 +0000 (22:51 +0000)]
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

17 years agoTemporarily backing out this change until we know why some dejagnu tests are failing.
Evan Cheng [Thu, 9 Aug 2007 22:25:35 +0000 (22:25 +0000)]
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

17 years agodivb / mulb outputs to ah. Under x86-64 it's not legal to read ah if the instruction...
Evan Cheng [Thu, 9 Aug 2007 21:59:35 +0000 (21:59 +0000)]
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

17 years agowhen we see a unaligned load from an insufficiently aligned global or
Chris Lattner [Thu, 9 Aug 2007 19:05:49 +0000 (19:05 +0000)]
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

17 years agoGR16_ sub-register class should be GR8_, not GR8. That is, it should only be 8-bit...
Evan Cheng [Thu, 9 Aug 2007 18:05:17 +0000 (18:05 +0000)]
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_.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40970 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoUpdate per review comments.
Dale Johannesen [Thu, 9 Aug 2007 17:27:48 +0000 (17:27 +0000)]
Update per review comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40965 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoMake NonLocal and None const in the right way. :-)
Owen Anderson [Thu, 9 Aug 2007 04:42:44 +0000 (04:42 +0000)]
Make NonLocal and None const in the right way. :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40961 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoTraverse loop blocks' terminators to find split candidates.
Devang Patel [Thu, 9 Aug 2007 01:39:01 +0000 (01:39 +0000)]
Traverse loop blocks' terminators to find split candidates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40960 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agolong double 9 of N. This finishes up the X86-32 bits
Dale Johannesen [Thu, 9 Aug 2007 01:04:01 +0000 (01:04 +0000)]
long double 9 of N.  This finishes up the X86-32 bits
(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

17 years agoFix arguments for some Altivec instructions. From SWB.
Dale Johannesen [Thu, 9 Aug 2007 00:49:19 +0000 (00:49 +0000)]
Fix arguments for some Altivec instructions.  From SWB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40957 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoIf a target really needs to custom lower constants, it should be allowed
Scott Michel [Wed, 8 Aug 2007 23:23:31 +0000 (23:23 +0000)]
If a target really needs to custom lower constants, it should be allowed
to do so.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40955 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdd more comments to memdep.
Owen Anderson [Wed, 8 Aug 2007 22:26:03 +0000 (22:26 +0000)]
Add more comments to memdep.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40953 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdd cost analysis.
Devang Patel [Wed, 8 Aug 2007 22:25:28 +0000 (22:25 +0000)]
Add cost analysis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40952 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoMake memdep fit in 80 cols.
Owen Anderson [Wed, 8 Aug 2007 22:01:54 +0000 (22:01 +0000)]
Make memdep fit in 80 cols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40950 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdd one more comment.
Owen Anderson [Wed, 8 Aug 2007 21:54:33 +0000 (21:54 +0000)]
Add one more comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40949 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoCleanup and comment-ize the memdep header.
Owen Anderson [Wed, 8 Aug 2007 21:53:20 +0000 (21:53 +0000)]
Cleanup and comment-ize the memdep header.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40948 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoPreserve dom info while processing one iteration loop.
Devang Patel [Wed, 8 Aug 2007 21:39:47 +0000 (21:39 +0000)]
Preserve dom info while processing one iteration loop.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40947 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoChange the None and NonLocal markers in memdep to be const.
Owen Anderson [Wed, 8 Aug 2007 21:39:39 +0000 (21:39 +0000)]
Change the None and NonLocal markers in memdep to be const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40946 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoSeparate program name from error message with a :
Reid Spencer [Wed, 8 Aug 2007 21:19:01 +0000 (21:19 +0000)]
Separate program name from error message with a :

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40945 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoClear split info.
Devang Patel [Wed, 8 Aug 2007 21:18:27 +0000 (21:18 +0000)]
Clear split info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40944 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoTerminate an error message with a newline.
Reid Spencer [Wed, 8 Aug 2007 21:17:59 +0000 (21:17 +0000)]
Terminate an error message with a newline.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40943 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoHandle multiple split conditions.
Devang Patel [Wed, 8 Aug 2007 21:02:17 +0000 (21:02 +0000)]
Handle multiple split conditions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40941 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoMake it clear that getSTDIN returns null when stdin is empty.
Reid Spencer [Wed, 8 Aug 2007 20:02:20 +0000 (20:02 +0000)]
Make it clear that getSTDIN returns null when stdin is empty.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40940 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoMake getSTDIN return null if the standard input is empty, as the header file
Reid Spencer [Wed, 8 Aug 2007 20:01:58 +0000 (20:01 +0000)]
Make getSTDIN return null if the standard input is empty, as the header file
documentation implies and as its uses depend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40939 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAllow the filename "-" to be a place holder for stdin. This allows directing
Reid Spencer [Wed, 8 Aug 2007 19:52:29 +0000 (19:52 +0000)]
Allow the filename "-" to be a place holder for stdin. This allows directing
stdin through llvm-ld and llvm-link.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40938 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoGlobal values also don't undead-ify pointers in our dead alloca's set.
Owen Anderson [Wed, 8 Aug 2007 19:12:31 +0000 (19:12 +0000)]
Global values also don't undead-ify pointers in our dead alloca's set.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40936 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoMake handleEndBlock significantly faster with one trivial improvement,
Owen Anderson [Wed, 8 Aug 2007 18:38:28 +0000 (18:38 +0000)]
Make handleEndBlock significantly faster with one trivial improvement,
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

17 years agoSmall improvement: if a function doesn't access memory, we don't need to scan
Owen Anderson [Wed, 8 Aug 2007 17:58:56 +0000 (17:58 +0000)]
Small improvement: if a function doesn't access memory, we don't need to scan
it for potentially undeading pointers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40933 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdd some comments, remove a dead argument, and simplify some control flow.
Owen Anderson [Wed, 8 Aug 2007 17:50:09 +0000 (17:50 +0000)]
Add some comments, remove a dead argument, and simplify some control flow.
No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40932 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoeliminate redundant conditions from the signless types conversion.
Chris Lattner [Wed, 8 Aug 2007 16:19:57 +0000 (16:19 +0000)]
eliminate redundant conditions from the signless types conversion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40927 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoHandle functions with no name better.
Chris Lattner [Wed, 8 Aug 2007 16:07:23 +0000 (16:07 +0000)]
Handle functions with no name better.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40926 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agoAdding kill info to val#.
Evan Cheng [Wed, 8 Aug 2007 07:03:29 +0000 (07:03 +0000)]
Adding kill info to val#.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40925 91177308-0d34-0410-b5e6-96231b3b80d8

17 years agosignificantly speed up constant folding of calls (and thus all clients that use
Chris Lattner [Wed, 8 Aug 2007 06:55:43 +0000 (06:55 +0000)]
significantly speed up constant folding of calls (and thus all clients that use
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

17 years agoSpeed up updateDFSNumbers with two observations:
Chris Lattner [Wed, 8 Aug 2007 06:24:20 +0000 (06:24 +0000)]
Speed up updateDFSNumbers with two observations:
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

17 years agoA few more small cleanups.
Owen Anderson [Wed, 8 Aug 2007 06:06:02 +0000 (06:06 +0000)]
A few more small cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40922 91177308-0d34-0410-b5e6-96231b3b80d8