Commit Graph

4047 Commits

Author SHA1 Message Date
Bill Wendling
ef4a661725 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11 17:20:55 +00:00
Duncan Sands
f7331b3dd7 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11 14:10:23 +00:00
Bill Wendling
d60da495cd 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11 08:27:17 +00:00
Evan Cheng
2d9823875a Observation of rematerialization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41809 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-10 22:11:18 +00:00
Chris Lattner
61c5ff460b 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-10 21:39:07 +00:00
Chris Lattner
87b51bc2b0 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-10 21:15:22 +00:00
Dale Johannesen
907f28ce30 Implement misaligned FP loads and stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41786 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-08 19:29:23 +00:00
Rafael Espindola
588af2fb99 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-07 14:52:14 +00:00
Anton Korobeynikov
8806c7b1f5 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-07 11:39:35 +00:00
Owen Anderson
718cb665ca 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-07 04:06:50 +00:00
David Greene
af992f782f Constify to catch bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41751 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06 19:46:46 +00:00
Dale Johannesen
43421b3dd7 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06 18:13:44 +00:00
Anton Korobeynikov
325be7c608 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06 17:21:48 +00:00
David Greene
04fa32f9aa Add instruction dump output. This helps find bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41744 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06 16:36:39 +00:00
David Greene
2c17c4d8d9 Pluggable coalescers inplementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41743 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06 16:18:45 +00:00
Evan Cheng
dd199d29b7 Fix a memory leak.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41739 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06 01:07:24 +00:00
Evan Cheng
f3bb2e65d1 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-05 21:46:51 +00:00
Duncan Sands
9886504384 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-05 14:12:46 +00:00
Duncan Sands
57810cdac4 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 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-05 11:27:52 +00:00
Evan Cheng
a34d395358 Fix for PR1632. EHSELECTION always produces a i32 value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41712 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-04 20:39:26 +00:00
Anton Korobeynikov
406452dce3 Silence warning while compiling with gcc 4.2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41676 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-02 22:11:14 +00:00
Anton Korobeynikov
9cc54f5867 Emit proper "secrel" directive, where possible. This fixes invalid asm syntax of debug info on mingw32. Also, cleanup
some stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41675 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-02 22:07:21 +00:00
Evan Cheng
343013538f More tweaks to improve compile time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41669 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-01 02:03:17 +00:00
Dale Johannesen
c4dd3c3b51 Add mod, copysign, abs operations to APFloat.
Implement some constant folding in SelectionDAG and
DAGCombiner using APFloat.  Remove double versions
of constructor and getValue from ConstantFPSDNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41664 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-31 23:34:27 +00:00
Evan Cheng
fadfb5b102 std::map -> DenseMap for slight compile time benefit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41650 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-31 21:23:06 +00:00
Dale Johannesen
ee8476847d Revise per review of previous patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41645 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-31 17:03:33 +00:00
Evan Cheng
d4e4937b79 Remove an unnecessary element, saving 4 bytes per LiveInterval.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41641 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-31 08:26:44 +00:00
Evan Cheng
c14b144ec3 Use std::map instead of a (potentially very sparse) array to track val# defined by copy from the other live range. Minor compile time win when number of val# is large.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41640 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-31 08:04:17 +00:00
Dale Johannesen
eaf089430e Enhance APFloat to retain bits of NaNs (fixes oggenc).
Use APFloat interfaces for more references, mostly
of ConstantFPSDNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41632 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-31 04:03:46 +00:00
Evan Cheng
34c2a9f57c Try fold re-materialized load instructions into its uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41598 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-30 05:53:02 +00:00
Dale Johannesen
f04afdbb48 Change LegalFPImmediates to use APFloat.
Add APFloat interfaces to ConstantFP, SelectionDAG.
Fix integer bit in double->APFloat conversion.
Convert LegalizeDAG to use APFloat interface in
ConstantFPSDNode uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41587 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-30 00:23:21 +00:00
Anton Korobeynikov
055c5449a4 Fix use of declaration inside case block
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41584 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-29 23:18:48 +00:00
Evan Cheng
7ecb38be0a Change LiveRange so it keeps a pointer to the VNInfo rather than an index.
Changes related modules so VNInfo's are not copied. This decrease
copy coalescing time by 45% and overall compilation time by 10% on siod.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41579 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-29 20:45:00 +00:00
Anton Korobeynikov
066f7b40f8 Lower FRAME_TO_ADDR_OFFSET to zero by default (if not custom lowered)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41578 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-29 19:28:29 +00:00
Dan Gohman
3e1a7aef17 Add an option, -view-sunit-dags, for viewing the actual SUnit DAGs used by
scheduling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41556 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-28 20:32:58 +00:00
Evan Cheng
1a66f0a4f2 Recover most of the compile time regression due to recent live interval changes.
1. Eliminate the costly live interval "swapping".
2. Change ValueNumberInfo container from SmallVector to std::vector. The former
   performs slowly when the vector size is very large.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41536 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-28 08:28:51 +00:00
Dan Gohman
e9c8fa095e Make DAGCombiner's global alias analysis query more precise in the case
where both pointers have non-zero offsets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41491 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-27 16:32:11 +00:00
Dan Gohman
5f43f92c69 If the source and destination pointers in an llvm.memmove are known
to not alias each other, it can be translated as an llvm.memcpy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41489 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-27 16:26:13 +00:00
Duncan Sands
6590b0457c There is an impedance matching problem between LLVM and
gcc exception handling: if an exception unwinds through
an invoke, then execution must branch to the invoke's
unwind target.  We previously tried to enforce this by
appending a cleanup action to every selector, however
this does not always work correctly due to an optimization
in the C++ unwinding runtime: if only cleanups would be
run while unwinding an exception, then the program just
terminates without actually executing the cleanups, as
invoke semantics would require.  I was hoping this
wouldn't be a problem, but in fact it turns out to be the
cause of all the remaining failures in the LLVM testsuite
(these also fail with -enable-correct-eh-support, so turning
on -enable-eh didn't make things worse!).  Instead we need
to append a full-blown catch-all to the end of each
selector.  The correct way of doing this depends on the
personality function, i.e. it is language dependent, so
can only be done by gcc.  Thus this patch which generalizes
the eh.selector intrinsic so that it can handle all possible
kinds of action table entries (before it didn't accomodate
cleanups): now 0 indicates a cleanup, and filters have to be
specified using the number of type infos plus one rather than
the number of type infos.  Related gcc patches will cause
Ada to pass a cleanup (0) to force the selector to always
fire, while C++ will use a C++ catch-all (null).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41484 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-27 15:47:50 +00:00
Dan Gohman
81975f6dfd Add explicit keywords and remove spurious trailing semicolons.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41482 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-27 14:50:10 +00:00
Dale Johannesen
e6c1742914 Revise per review comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41409 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-26 01:18:27 +00:00
Dale Johannesen
87503a63d5 Add APFloat interface to ConstantFPSDNode. Change
over uses in DAGCombiner.  Fix interfaces to work
with APFloats.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41407 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25 22:10:57 +00:00
Chris Lattner
09ec1b0583 Allow target constants to be illegal types. The target should
know how to handle them.  This fixes 
test/CodeGen/Generic/asm-large-immediate.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41388 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25 01:00:22 +00:00
Chris Lattner
7df31dc89b Teach the dag scheduler to handle inline asm nodes with multi-value immediate operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41386 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25 00:53:07 +00:00
Bill Wendling
cf4bb317ef The personality function might need to be declared as:
.set  Lset0,___gxx_personality_v0-.
    .long Lset0

on some targets. Make it so!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41385 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25 00:51:55 +00:00
Chris Lattner
48884cd80b rename isOperandValidForConstraint to LowerAsmOperandForConstraint,
changing the interface to allow for future changes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41384 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25 00:47:38 +00:00
Dale Johannesen
12595d7b16 Poison APFloat::operator==. Replace existing uses with bitwiseIsEqual.
This means backing out the preceding change to Constants.cpp, alas.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41378 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-24 22:09:56 +00:00
Dale Johannesen
8bb369b807 Use APFloat internally for ConstantFPSDNode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41372 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-24 20:59:15 +00:00
Anton Korobeynikov
2f597bd09e Perform correct codegen for eh_dwarf_cfa intrinsic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41316 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-23 07:21:06 +00:00
Andrew Lenharth
b753a9bb62 move this check. ppc outputs .no_dead_strip properly
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41286 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-22 19:33:11 +00:00