Chris Lattner [Wed, 12 Sep 2007 17:53:10 +0000 (17:53 +0000)]
Change llvm.gcroot to not init the root to null at runtime, this prevents
using it for live-in values etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41879
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Dale Johannesen [Wed, 12 Sep 2007 03:31:28 +0000 (03:31 +0000)]
Generated files for previous patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41876
91177308-0d34-0410-b5e6-
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Dale Johannesen [Wed, 12 Sep 2007 03:30:33 +0000 (03:30 +0000)]
Revise previous patch per review comments.
Next round of x87 long double stuff.
Getting close now, basically works.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41875
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Dale Johannesen [Wed, 12 Sep 2007 01:22:05 +0000 (01:22 +0000)]
Compensate for partCount change in Bogus definition
(could break hash table in ConstantFP)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41874
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Bill Wendling [Tue, 11 Sep 2007 23:55:40 +0000 (23:55 +0000)]
Enable indirect encoding for the personality function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41873
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Daniel Berlin [Tue, 11 Sep 2007 22:58:27 +0000 (22:58 +0000)]
Move dump out of class, use "\n" instead of endl
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41872
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Evan Cheng [Tue, 11 Sep 2007 22:34:47 +0000 (22:34 +0000)]
Sometimes a MI can define a register as well as defining a super-register at the
same time. Do not mark the "smaller" def as dead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41871
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Anton Korobeynikov [Tue, 11 Sep 2007 22:20:27 +0000 (22:20 +0000)]
Fix date :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41870
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Anton Korobeynikov [Tue, 11 Sep 2007 22:12:26 +0000 (22:12 +0000)]
Testcase for recent pragma pack stuff
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41869
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Evan Cheng [Tue, 11 Sep 2007 19:55:27 +0000 (19:55 +0000)]
Remove (somewhat confusing) Imp<> helper, use let Defs = [], Uses = [] instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41863
91177308-0d34-0410-b5e6-
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Evan Cheng [Tue, 11 Sep 2007 19:53:28 +0000 (19:53 +0000)]
Added status flags register: EFLAGS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41862
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Evan Cheng [Tue, 11 Sep 2007 19:52:18 +0000 (19:52 +0000)]
Allow set operators with multiple destinations, i.e. (set x, y, (op a, b)).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41861
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Dale Johannesen [Tue, 11 Sep 2007 18:33:39 +0000 (18:33 +0000)]
Generated files for previous patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41859
91177308-0d34-0410-b5e6-
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Dale Johannesen [Tue, 11 Sep 2007 18:32:33 +0000 (18:32 +0000)]
Add APInt interfaces to APFloat (allows directly
access to bits). Use them in place of float and
double interfaces where appropriate.
First bits of x86 long double constants handling
(untested, probably does not work).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41858
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Daniel Berlin [Tue, 11 Sep 2007 17:42:22 +0000 (17:42 +0000)]
Convert to use ilist and non-pointer lists for extra goodness
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41855
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Bill Wendling [Tue, 11 Sep 2007 17:24:38 +0000 (17:24 +0000)]
Add accessor method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41854
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Bill Wendling [Tue, 11 Sep 2007 17:20:55 +0000 (17:20 +0000)]
Add a bool to indicate if we should set the "indirect encoding" bit in the Dwarf
information for EH.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41852
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Chris Lattner [Tue, 11 Sep 2007 17:12:32 +0000 (17:12 +0000)]
Reenable libgc and libprofile is explicitly requested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41851
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Chris Lattner [Tue, 11 Sep 2007 17:10:52 +0000 (17:10 +0000)]
remove an obsolete library.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41850
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Chris Lattner [Tue, 11 Sep 2007 17:09:54 +0000 (17:09 +0000)]
update this to use llvm-config, patch by Jose M. Moya
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41849
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Duncan Sands [Tue, 11 Sep 2007 15:07:50 +0000 (15:07 +0000)]
Test that a call to a trampoline is turned into a call to
the underlying nested function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41846
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Duncan Sands [Tue, 11 Sep 2007 14:40:04 +0000 (14:40 +0000)]
Two ParamAttrsVectors which differ by a permutation
of their elements do not yield the same ParamAttrsList,
though they should. On the other hand, everyone seems
to pass such vectors with elements ordered by increasing
index, so rather than sorting the elements simply assert
that the elements are ordered in this way.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41845
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Duncan Sands [Tue, 11 Sep 2007 14:35:41 +0000 (14:35 +0000)]
Turn calls to trampolines into calls to the underlying
nested function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41844
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Duncan Sands [Tue, 11 Sep 2007 14:10:23 +0000 (14:10 +0000)]
Fold the adjust_trampoline intrinsic into
init_trampoline. There is now only one
trampoline intrinsic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41841
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Duncan Sands [Tue, 11 Sep 2007 12:30:25 +0000 (12:30 +0000)]
My compiler warns about the semicolon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41840
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Bill Wendling [Tue, 11 Sep 2007 08:27:17 +0000 (08:27 +0000)]
The personality function on Darwin needs a global stub. We then refer to
that global stub instead of doing the ".set" thingy we were doing before.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41838
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Owen Anderson [Tue, 11 Sep 2007 05:08:05 +0000 (05:08 +0000)]
Add a ValueInfoT template parameter to DenseMap so that it can properly make decisions
based on whether the key AND the value require ctors/dtors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41837
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Owen Anderson [Tue, 11 Sep 2007 04:43:51 +0000 (04:43 +0000)]
Don't bother to initialize values corresponding to empty or tombstone
keys.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41834
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Owen Anderson [Tue, 11 Sep 2007 04:31:00 +0000 (04:31 +0000)]
Fix a typo in memdep, which was causing PR1648.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41833
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Daniel Berlin [Tue, 11 Sep 2007 04:11:28 +0000 (04:11 +0000)]
Fix bugs with &=, intersect with complement. Add three argument version of intersect with complement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41832
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Owen Anderson [Tue, 11 Sep 2007 03:48:08 +0000 (03:48 +0000)]
Fix non-deterministic behavior in the DenseMap copy constructor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41831
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Daniel Berlin [Tue, 11 Sep 2007 01:38:07 +0000 (01:38 +0000)]
Add remaining functions necessary for andersen's
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41830
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Devang Patel [Tue, 11 Sep 2007 01:10:45 +0000 (01:10 +0000)]
Avoid negative logic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41829
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Devang Patel [Tue, 11 Sep 2007 00:42:56 +0000 (00:42 +0000)]
Refactor code into a separate method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41826
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Chris Lattner [Tue, 11 Sep 2007 00:39:43 +0000 (00:39 +0000)]
Testcase for PR1634
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41824
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Devang Patel [Tue, 11 Sep 2007 00:23:56 +0000 (00:23 +0000)]
Clear split info object.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41823
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Devang Patel [Tue, 11 Sep 2007 00:12:56 +0000 (00:12 +0000)]
Split condition does not have to be ICmpInst in all cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41822
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Devang Patel [Mon, 10 Sep 2007 23:57:58 +0000 (23:57 +0000)]
Check all terminators inside loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41821
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Chris Lattner [Mon, 10 Sep 2007 23:51:41 +0000 (23:51 +0000)]
remove obsolete testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41820
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Chris Lattner [Mon, 10 Sep 2007 23:46:29 +0000 (23:46 +0000)]
remove some dead code, this is handled by constant folding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41819
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Chris Lattner [Mon, 10 Sep 2007 23:42:42 +0000 (23:42 +0000)]
Fix a buggy constant folding transformation when handling aliases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41818
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Devang Patel [Mon, 10 Sep 2007 23:34:06 +0000 (23:34 +0000)]
Swap exit condition operands if it works.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41817
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Chris Lattner [Mon, 10 Sep 2007 23:24:14 +0000 (23:24 +0000)]
regenerate
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41816
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Chris Lattner [Mon, 10 Sep 2007 23:23:53 +0000 (23:23 +0000)]
Fix PR1645 by resolving forward alias references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41815
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Dale Johannesen [Mon, 10 Sep 2007 22:47:59 +0000 (22:47 +0000)]
Add missing llvm-dis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41813
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Evan Cheng [Mon, 10 Sep 2007 22:22:23 +0000 (22:22 +0000)]
80 col.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41812
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Evan Cheng [Mon, 10 Sep 2007 22:16:37 +0000 (22:16 +0000)]
New entry.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41810
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Evan Cheng [Mon, 10 Sep 2007 22:11:18 +0000 (22:11 +0000)]
Observation of rematerialization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41809
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Chris Lattner [Mon, 10 Sep 2007 21:43:18 +0000 (21:43 +0000)]
Add some notes about better flag handling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41808
91177308-0d34-0410-b5e6-
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Chris Lattner [Mon, 10 Sep 2007 21:39:07 +0000 (21:39 +0000)]
Emit:
cmpl %eax, %ecx
setae %al
movzbl %al, %eax
instead of:
cmpl %eax, %ecx
setb %al
xorb $1, %al
movzbl %al, %eax
when using logical not of a C comparison.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41807
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Chris Lattner [Mon, 10 Sep 2007 21:16:23 +0000 (21:16 +0000)]
this is not infinite recursion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41806
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Chris Lattner [Mon, 10 Sep 2007 21:15:22 +0000 (21:15 +0000)]
1. Don't call Value::getName(), which is slow.
2. Lower calls to fabs and friends to FABS nodes etc unless the function has
internal linkage. Before we wouldn't lower if it had a definition, which
is incorrect. This allows us to compile:
define double @fabs(double %f) {
%tmp2 = tail call double @fabs( double %f )
ret double %tmp2
}
into:
_fabs:
fabs f1, f1
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41805
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Chris Lattner [Mon, 10 Sep 2007 20:58:55 +0000 (20:58 +0000)]
Prevent tailcallelim from breaking "recursive" calls to builtins.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41804
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Evan Cheng [Mon, 10 Sep 2007 20:48:53 +0000 (20:48 +0000)]
It's not safe to rematerialize MOV32r0 etc. by simply cloning the original
instruction. These are implemented with xor which will modify the conditional
code. They should be rematerialized as move instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41802
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Devang Patel [Mon, 10 Sep 2007 18:33:42 +0000 (18:33 +0000)]
Filter exit conditions which are not yet handled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41800
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Devang Patel [Mon, 10 Sep 2007 18:12:52 +0000 (18:12 +0000)]
New test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41799
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Devang Patel [Mon, 10 Sep 2007 18:08:23 +0000 (18:08 +0000)]
Require SCEV before LCSSA.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41798
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Owen Anderson [Sun, 9 Sep 2007 21:43:49 +0000 (21:43 +0000)]
Remove an un-needed dependence query. This improves compile time marginally on 401.bzip2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41792
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Daniel Berlin [Sun, 9 Sep 2007 01:10:40 +0000 (01:10 +0000)]
Add SparseBitVector implementation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41790
91177308-0d34-0410-b5e6-
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Owen Anderson [Sat, 8 Sep 2007 22:23:52 +0000 (22:23 +0000)]
Turn GVN on by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41787
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Dale Johannesen [Sat, 8 Sep 2007 19:29:23 +0000 (19:29 +0000)]
Implement misaligned FP loads and stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41786
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Nick Lewycky [Sat, 8 Sep 2007 13:57:50 +0000 (13:57 +0000)]
Fix description of the call instruction. There are two types, with one being
optional.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41785
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Chuck Rose III [Sat, 8 Sep 2007 04:17:08 +0000 (04:17 +0000)]
Fix for VisualStudio. It is treating a 2 bit enum as a signed int for comparison purposes, causing failures. Using an extra bit fixes it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41784
91177308-0d34-0410-b5e6-
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Evan Cheng [Sat, 8 Sep 2007 00:02:17 +0000 (00:02 +0000)]
Smarter Reset(). Instead of deallocating all memory regions and reallocate the
first region, just deallocate all but the last region in the list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41782
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Evan Cheng [Fri, 7 Sep 2007 23:59:02 +0000 (23:59 +0000)]
TableGen no longer emit CopyFromReg nodes for implicit results in physical
registers. The scheduler is now responsible for emitting them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41781
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Bill Wendling [Fri, 7 Sep 2007 22:01:02 +0000 (22:01 +0000)]
Add missing index versions of instructions to the map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41776
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Dan Gohman [Fri, 7 Sep 2007 21:32:51 +0000 (21:32 +0000)]
Avoid storing and reloading zeros and other constants from stack slots
by flagging the associated instructions as being trivially rematerializable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41775
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Dale Johannesen [Fri, 7 Sep 2007 21:07:57 +0000 (21:07 +0000)]
Apply feedback from previous patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41774
91177308-0d34-0410-b5e6-
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Dale Johannesen [Fri, 7 Sep 2007 18:31:50 +0000 (18:31 +0000)]
Revert previous change to IR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41769
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Rafael Espindola [Fri, 7 Sep 2007 14:52:14 +0000 (14:52 +0000)]
Add support for having different alignment for objects on call frames.
The x86-64 ABI states that objects passed on the stack have
8 byte alignment. Implement that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41768
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Anton Korobeynikov [Fri, 7 Sep 2007 11:39:35 +0000 (11:39 +0000)]
Split eh.select / eh.typeid.for intrinsics into i32/i64 versions. This is needed, because they just "mark" register
liveins and we let frontend solve type issue, not lowering code :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41763
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Bill Wendling [Fri, 7 Sep 2007 08:30:09 +0000 (08:30 +0000)]
Test for PR1641.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41762
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Chris Lattner [Fri, 7 Sep 2007 05:33:03 +0000 (05:33 +0000)]
Don't zap back to back volatile load/stores
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41759
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Owen Anderson [Fri, 7 Sep 2007 04:06:50 +0000 (04:06 +0000)]
Add lengthof and endof templates that hide a lot of sizeof computations.
Patch by Sterling Stein!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41758
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David Greene [Thu, 6 Sep 2007 19:46:46 +0000 (19:46 +0000)]
Constify to catch bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41751
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Dale Johannesen [Thu, 6 Sep 2007 18:13:44 +0000 (18:13 +0000)]
Next round of APFloat changes.
Use APFloat in UpgradeParser and AsmParser.
Change all references to ConstantFP to use the
APFloat interface rather than double. Remove
the ConstantFP double interfaces.
Use APFloat functions for constant folding arithmetic
and comparisons.
(There are still way too many places APFloat is
just a wrapper around host float/double, but we're
getting there.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41747
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Anton Korobeynikov [Thu, 6 Sep 2007 17:21:48 +0000 (17:21 +0000)]
Proper handle case, when aliasee is external weak symbol referenced only by alias itself.
Also, fix a case, when target doesn't have weak symbols supported.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41746
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David Greene [Thu, 6 Sep 2007 16:36:39 +0000 (16:36 +0000)]
Add instruction dump output. This helps find bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41744
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David Greene [Thu, 6 Sep 2007 16:18:45 +0000 (16:18 +0000)]
Pluggable coalescers inplementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41743
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Nick Lewycky [Thu, 6 Sep 2007 02:40:25 +0000 (02:40 +0000)]
Use isTrueWhenEqual. Thanks Chris!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41741
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Nick Lewycky [Thu, 6 Sep 2007 01:10:22 +0000 (01:10 +0000)]
When the two operands of an icmp are equal, there are five possible predicates
that would make the icmp true. Fixes PR1637.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41740
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Evan Cheng [Thu, 6 Sep 2007 01:07:24 +0000 (01:07 +0000)]
Fix a memory leak.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41739
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Evan Cheng [Thu, 6 Sep 2007 00:14:41 +0000 (00:14 +0000)]
Fix a bug in X86InstrInfo::convertToThreeAddress that caused it to codegen:
leal (,%rcx,8), %rcx
It should be
leal (,%rcx,8), %ecx
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41735
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Bill Wendling [Wed, 5 Sep 2007 23:47:12 +0000 (23:47 +0000)]
LVXL and STVXL are also a load and store resp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41733
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Evan Cheng [Wed, 5 Sep 2007 21:58:18 +0000 (21:58 +0000)]
Accidentially left this out.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41730
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Evan Cheng [Wed, 5 Sep 2007 21:46:51 +0000 (21:46 +0000)]
Use pool allocator for all the VNInfo's to improve memory access locality. This reduces coalescing time on siod Mac OS X PPC by 35%. Also remove the back ptr from VNInfo to LiveInterval and other tweaks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41729
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Evan Cheng [Wed, 5 Sep 2007 21:41:34 +0000 (21:41 +0000)]
Added Reset() to free all allocated memory regions and reset state to be the same as right after ctor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41728
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Evan Cheng [Wed, 5 Sep 2007 21:36:14 +0000 (21:36 +0000)]
Missing break. Patch by Wojciech Matyjewicz.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41727
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Dale Johannesen [Wed, 5 Sep 2007 20:39:49 +0000 (20:39 +0000)]
Fix mod so it actually works. Fix conversions to
native types to handle denormals correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41726
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Chuck Rose III [Wed, 5 Sep 2007 20:36:41 +0000 (20:36 +0000)]
Forgot to obey 80 column rule. Fixing that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41725
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Dale Johannesen [Wed, 5 Sep 2007 17:50:36 +0000 (17:50 +0000)]
Change all floating constants that are not exactly
representable to use hex format.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41722
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Chuck Rose III [Wed, 5 Sep 2007 16:54:38 +0000 (16:54 +0000)]
Added default parameters to GetElementPtrInstr constructor call. Visual Studio 2k5 was getting confused and was unable to compile it. Suspected compiler error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41721
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Duncan Sands [Wed, 5 Sep 2007 14:12:46 +0000 (14:12 +0000)]
Due to label merging, the last label for an invoke
may be the same as the first label for the following
invoke. Remove a micro-optimization which was wrong
in this case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41720
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Duncan Sands [Wed, 5 Sep 2007 11:53:04 +0000 (11:53 +0000)]
Testcases for PR1628.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41719
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Duncan Sands [Wed, 5 Sep 2007 11:27:52 +0000 (11:27 +0000)]
Fix PR1628. When exception handling is turned on,
labels are generated bracketing each call (not just
invokes). This is used to generate entries in
the exception table required by the C++ personality.
However it gets in the way of tail-merging. This
patch solves the problem by no longer placing labels
around ordinary calls. Instead we generate entries
in the exception table that cover every instruction
in the function that wasn't covered by an invoke
range (the range given by the labels around the invoke).
As an optimization, such entries are only generated for
parts of the function that contain a call, since for
the moment those are the only instructions that can
throw an exception [1]. As a happy consequence, we
now get a smaller exception table, since the same
region can cover many calls. While there, I also
implemented folding of invoke ranges - successive
ranges are merged when safe to do so. Finally, if
a selector contains only a cleanup, there's a special
shorthand for it - place a 0 in the call-site entry.
I implemented this while there. As a result, the
exception table output (excluding filters) is now
optimal - it cannot be made smaller [2]. The
problem with throw filters is that folding them
optimally is hard, and the benefit of folding them is
minimal.
[1] I tested that having trapping instructions (eg
divide by zero) in such a region doesn't cause trouble.
[2] It could be made smaller with the help of higher
layers, eg by having branch folding reorder basic blocks
ending in invokes with the same landing pad so they
follow each other. I don't know if this is worth doing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41718
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Bill Wendling [Wed, 5 Sep 2007 04:05:20 +0000 (04:05 +0000)]
Add the 64-bit versions of the DS* Altivec instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41717
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Devang Patel [Tue, 4 Sep 2007 20:46:58 +0000 (20:46 +0000)]
Enable loop index split pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41714
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Devang Patel [Tue, 4 Sep 2007 20:46:35 +0000 (20:46 +0000)]
Insert cloned loop basic blocks before original loop header.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41713
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Evan Cheng [Tue, 4 Sep 2007 20:39:26 +0000 (20:39 +0000)]
Fix for PR1632. EHSELECTION always produces a i32 value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41712
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Evan Cheng [Tue, 4 Sep 2007 20:20:29 +0000 (20:20 +0000)]
Fix for PR1613: added 64-bit rotate left PPC instructions and patterns.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41711
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