Ted Kremenek [Tue, 6 Nov 2007 19:49:16 +0000 (19:49 +0000)]
Added support for processing abbreviations in the Deserializer.
Added some #ifdef-controlled messages for debugging backpatching.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43771
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Chris Lattner [Tue, 6 Nov 2007 18:13:32 +0000 (18:13 +0000)]
fixes from Kelly Wilson.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43767
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Bill Wendling [Tue, 6 Nov 2007 09:36:34 +0000 (09:36 +0000)]
Clarify some of the iostreams stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43766
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Evan Cheng [Tue, 6 Nov 2007 08:52:21 +0000 (08:52 +0000)]
First step towards moving the coalescer to priority_queue based machinery.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43764
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Evan Cheng [Tue, 6 Nov 2007 08:50:44 +0000 (08:50 +0000)]
Fix a bug where a def use operand isn't being detected as a sub-register use.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43763
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Evan Cheng [Tue, 6 Nov 2007 08:44:59 +0000 (08:44 +0000)]
Add pseudo dependency to force two-address instruction to be scheduled after
other uses. There was a overly restricted check that prevented some obvious
cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43762
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Chris Lattner [Tue, 6 Nov 2007 07:26:32 +0000 (07:26 +0000)]
edits for chapter 3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43761
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Chris Lattner [Tue, 6 Nov 2007 07:16:22 +0000 (07:16 +0000)]
chapter 2 edits
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43760
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Chris Lattner [Tue, 6 Nov 2007 06:32:18 +0000 (06:32 +0000)]
edits
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43758
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Chris Lattner [Tue, 6 Nov 2007 05:58:42 +0000 (05:58 +0000)]
Fix PR1774 and BasicAA/2007-11-05-SizeCrash.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43756
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Owen Anderson [Tue, 6 Nov 2007 05:26:02 +0000 (05:26 +0000)]
Add a few comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43755
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Owen Anderson [Tue, 6 Nov 2007 05:22:43 +0000 (05:22 +0000)]
DomForest is a forest of registers, not instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43754
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Chris Lattner [Tue, 6 Nov 2007 05:07:30 +0000 (05:07 +0000)]
clarify what proto is.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43753
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Chris Lattner [Tue, 6 Nov 2007 05:02:48 +0000 (05:02 +0000)]
Add a real intro to the series.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43752
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Owen Anderson [Tue, 6 Nov 2007 04:49:43 +0000 (04:49 +0000)]
StrongPHIElimination requires LiveVariables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43751
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Bruno Cardoso Lopes [Tue, 6 Nov 2007 03:15:20 +0000 (03:15 +0000)]
Better processor definition
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43749
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Chris Lattner [Tue, 6 Nov 2007 01:40:41 +0000 (01:40 +0000)]
typo from Ryan Brown.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43748
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Chris Lattner [Tue, 6 Nov 2007 01:39:12 +0000 (01:39 +0000)]
fixes from Ryan Brown.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43747
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Owen Anderson [Tue, 6 Nov 2007 01:26:56 +0000 (01:26 +0000)]
Add a missing #include.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43746
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Chris Lattner [Tue, 6 Nov 2007 01:15:27 +0000 (01:15 +0000)]
wrap long lines
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43745
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Dan Gohman [Mon, 5 Nov 2007 23:35:22 +0000 (23:35 +0000)]
Add support for vector remainder operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43744
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Dan Gohman [Mon, 5 Nov 2007 23:16:33 +0000 (23:16 +0000)]
Fix an abort in instcombine when folding creates a vector rem instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43743
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Rafael Espindola [Mon, 5 Nov 2007 23:12:20 +0000 (23:12 +0000)]
Move the LowerMEMCPY and LowerMEMCPYCall to a common place.
Thanks for the suggestions Bill :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43742
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Ted Kremenek [Mon, 5 Nov 2007 21:36:35 +0000 (21:36 +0000)]
Added support in serializer and deserializer to create arbitrary blocks.
Added detection of end-of-stream in deserializer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43736
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Dale Johannesen [Mon, 5 Nov 2007 21:20:28 +0000 (21:20 +0000)]
Make labels work in asm blocks; allow labels as
parameters. Rename ValueRefList to ParamList
in AsmParser, since its only use is for parameters.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43734
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Ted Kremenek [Mon, 5 Nov 2007 20:47:27 +0000 (20:47 +0000)]
Added default creation of root-level block by bitstream serializer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43732
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Chris Lattner [Mon, 5 Nov 2007 20:13:56 +0000 (20:13 +0000)]
merge in various fixes from Kelly Wilson.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43731
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Chris Lattner [Mon, 5 Nov 2007 20:04:56 +0000 (20:04 +0000)]
add some links to the tutorial index and between chapters.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43730
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Chris Lattner [Mon, 5 Nov 2007 19:33:52 +0000 (19:33 +0000)]
grammaro
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Devang Patel [Mon, 5 Nov 2007 19:32:30 +0000 (19:32 +0000)]
If a value is incoming from outside the loop then the value does not need remapping and the value is never tracked through LastValueMap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43728
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Chris Lattner [Mon, 5 Nov 2007 19:28:07 +0000 (19:28 +0000)]
recursive types are our friend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43727
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Chris Lattner [Mon, 5 Nov 2007 19:25:14 +0000 (19:25 +0000)]
mention possibility of using a visitor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43726
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Chris Lattner [Mon, 5 Nov 2007 19:22:50 +0000 (19:22 +0000)]
clarify why prototype::codegen returns a function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43725
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Chris Lattner [Mon, 5 Nov 2007 19:10:15 +0000 (19:10 +0000)]
TOC for chapter 8
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43724
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Chris Lattner [Mon, 5 Nov 2007 19:06:59 +0000 (19:06 +0000)]
add table of contents to each chapter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43723
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Lauro Ramos Venancio [Mon, 5 Nov 2007 18:33:37 +0000 (18:33 +0000)]
[ARM] Fix code generation for:
static __thread struct {
int a;
int b;
} teste = {0, 0};
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43722
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Ted Kremenek [Mon, 5 Nov 2007 18:13:03 +0000 (18:13 +0000)]
Fixed bug where tombstone key and empty key for DenseMap used for
pointer backpatching in deserializer were improperly created and
resulted in an assertion failure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43721
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Duncan Sands [Mon, 5 Nov 2007 18:03:02 +0000 (18:03 +0000)]
Don't output ABI size padding twice. By using the store
size for the field we get ABI padding automatically, so
no need to put it in again when we emit the field.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43720
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Chris Lattner [Mon, 5 Nov 2007 18:02:15 +0000 (18:02 +0000)]
add link to llvmbuilder doxygen docs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43719
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Chris Lattner [Mon, 5 Nov 2007 17:54:34 +0000 (17:54 +0000)]
spell identifier correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43718
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Chris Lattner [Mon, 5 Nov 2007 17:52:04 +0000 (17:52 +0000)]
fix typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43717
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Chris Lattner [Mon, 5 Nov 2007 17:45:54 +0000 (17:45 +0000)]
Dan points out that mem2reg also promotes vectors: be more precise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43715
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Evan Cheng [Mon, 5 Nov 2007 17:41:38 +0000 (17:41 +0000)]
Move SimpleRegisterCoalescing.h to lib/CodeGen since there is now a common
register coalescer interface: RegisterCoalescing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43714
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Chris Lattner [Mon, 5 Nov 2007 17:39:26 +0000 (17:39 +0000)]
clarify
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43712
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Chris Lattner [Mon, 5 Nov 2007 17:38:34 +0000 (17:38 +0000)]
fix typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43711
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Duncan Sands [Mon, 5 Nov 2007 16:04:58 +0000 (16:04 +0000)]
Fix some typos.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43709
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Duncan Sands [Mon, 5 Nov 2007 15:15:50 +0000 (15:15 +0000)]
Trivial fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43707
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Evan Cheng [Mon, 5 Nov 2007 07:30:01 +0000 (07:30 +0000)]
Use movups to spill / restore SSE registers on targets where stacks alignment is
less than 16. This is a temporary solution until dynamic stack alignment is
implemented.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43703
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Chris Lattner [Mon, 5 Nov 2007 07:02:49 +0000 (07:02 +0000)]
add a link.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43702
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Chris Lattner [Mon, 5 Nov 2007 07:00:54 +0000 (07:00 +0000)]
finish the tutorial, yaay.
comments and feedback welcome.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43701
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Evan Cheng [Mon, 5 Nov 2007 06:46:45 +0000 (06:46 +0000)]
Skip over deleted val#'s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43700
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Evan Cheng [Mon, 5 Nov 2007 03:11:55 +0000 (03:11 +0000)]
Handle cases where a register and one of its super-register are both marked as
defined on the same instruction. This fixes PR1767.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43699
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Evan Cheng [Mon, 5 Nov 2007 03:04:26 +0000 (03:04 +0000)]
Fix test case. Chris didn't do make check. :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43698
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Bruno Cardoso Lopes [Mon, 5 Nov 2007 03:02:32 +0000 (03:02 +0000)]
Added support for PIC code with "explicit relocations" *only*.
Removed all macro code for PIC (goodbye "la").
Support tested with shootout bench.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43697
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Gordon Henriksen [Mon, 5 Nov 2007 02:05:35 +0000 (02:05 +0000)]
Bringing Passes.html up-to-date with the deletion of the
-emitbitcode option and the addition of -preverify.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43696
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Chris Lattner [Mon, 5 Nov 2007 01:58:13 +0000 (01:58 +0000)]
Add the first section of chapter 8.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43695
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Gordon Henriksen [Mon, 5 Nov 2007 01:54:05 +0000 (01:54 +0000)]
Deleting redundant copy of block extractor pass. See also PR1775.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43694
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Evan Cheng [Mon, 5 Nov 2007 01:00:44 +0000 (01:00 +0000)]
Doh. PR1187 -> PR1766.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43693
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Evan Cheng [Mon, 5 Nov 2007 00:59:10 +0000 (00:59 +0000)]
Fix PR1187.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43692
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Duncan Sands [Mon, 5 Nov 2007 00:35:07 +0000 (00:35 +0000)]
If a long double is in a packed struct, it may be
that there is no padding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43691
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Chris Lattner [Mon, 5 Nov 2007 00:23:57 +0000 (00:23 +0000)]
finish the chapter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43689
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Duncan Sands [Mon, 5 Nov 2007 00:04:43 +0000 (00:04 +0000)]
Eliminate the remaining uses of getTypeSize. This
should only effect x86 when using long double. Now
12/16 bytes are output for long double globals (the
exact amount depends on the alignment). This brings
globals in line with the rest of LLVM: the space
reserved for an object is now always the ABI size.
One tricky point is that only 10 bytes should be
output for long double if it is a field in a packed
struct, which is the reason for the additional
argument to EmitGlobalConstant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43688
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Owen Anderson [Sun, 4 Nov 2007 22:33:26 +0000 (22:33 +0000)]
Another step of stronger PHI elimination down.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43684
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Gordon Henriksen [Sun, 4 Nov 2007 20:28:31 +0000 (20:28 +0000)]
Deleting -emitbitcode option which did nothing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43683
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Chris Lattner [Sun, 4 Nov 2007 19:42:13 +0000 (19:42 +0000)]
fix typos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43682
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Chris Lattner [Sun, 4 Nov 2007 19:23:28 +0000 (19:23 +0000)]
Fix PR1761 by not printing (rip) suffix when in -static mode.
Evan, please review this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43680
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Gordon Henriksen [Sun, 4 Nov 2007 18:17:58 +0000 (18:17 +0000)]
Validation fix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43679
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Gordon Henriksen [Sun, 4 Nov 2007 18:14:08 +0000 (18:14 +0000)]
Typo fix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43678
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Gordon Henriksen [Sun, 4 Nov 2007 18:10:18 +0000 (18:10 +0000)]
Completing Passes.html with the exception of -emitbitcode, which should be
removed. This document could still stand for significant improvement:
* Editing the pass descriptions; most were lifted with minimal editing from
comments. Although implementation details were elided, many of the were not
written for the audience that would be interested in this document.
* More "before and after" examples.
* More implicit dependency details. (Perhaps listing transforms in
-std-compile-opts order would help alleviate this.)
* Adding documentation for how to invoke passes programmatically.
* Rearranging the document into a more logical taxonomy. For instance, putting
profiling passes together.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43677
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Nick Lewycky [Sun, 4 Nov 2007 17:32:10 +0000 (17:32 +0000)]
Fix crash before main on ppc/linux with static constructors. PR1771
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43676
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Gordon Henriksen [Sun, 4 Nov 2007 16:17:00 +0000 (16:17 +0000)]
Fix a validation error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43675
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Gordon Henriksen [Sun, 4 Nov 2007 16:15:04 +0000 (16:15 +0000)]
Finishing initial docs for all transformations in Passes.html.
Also cleaned up some comments in source files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43674
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Gordon Henriksen [Sun, 4 Nov 2007 16:12:17 +0000 (16:12 +0000)]
Removing a dead reference from LLVM.xcodeproj.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43673
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Duncan Sands [Sun, 4 Nov 2007 14:43:57 +0000 (14:43 +0000)]
Change uses of getTypeSize to getABITypeSize, getTypeStoreSize
or getTypeSizeInBits as appropriate in ScalarReplAggregates.
The right change to make was not always obvious, so it would
be good to have an sroa guru review this. While there I noticed
some bugs, and fixed them: (1) arrays of x86 long double have
holes due to alignment padding, but this wasn't being spotted
by HasStructPadding (renamed to HasPadding). The same goes
for arrays of oddly sized ints. Vectors also suffer from this,
in fact the problem for vectors is much worse because basic
vector assumptions seem to be broken by vectors of type with
alignment padding. I didn't try to fix any of these vector
problems. (2) The code for extracting smaller integers from
larger ones (in the "int union" case) was wrong on big-endian
machines for integers with size not a multiple of 8, like i1.
Probably this is impossible to hit via llvm-gcc, but I fixed
it anyway while there and added a testcase. I also got rid of
some trailing whitespace and changed a function name which
had an obvious typo in it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43672
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Evan Cheng [Sun, 4 Nov 2007 08:32:21 +0000 (08:32 +0000)]
If an interval is being undone clear its preference as well since the source interval may have been undone as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43670
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Chris Lattner [Sun, 4 Nov 2007 06:51:12 +0000 (06:51 +0000)]
Fix PR1763 by allowing the 'q' constraint to work with 64-bit
regs on x86-64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43669
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Chris Lattner [Sun, 4 Nov 2007 06:37:55 +0000 (06:37 +0000)]
Disable tail duplication of call instructions. The cost
metric is way off for these in general, and this works around
buggy code like that in PR1764. we'll see if there is a big
performance impact of this. If so, I'll revert it tomorrow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43668
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Chris Lattner [Sat, 3 Nov 2007 22:22:30 +0000 (22:22 +0000)]
finish the 'Memory in LLVM' section
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43667
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Chris Lattner [Sat, 3 Nov 2007 08:55:29 +0000 (08:55 +0000)]
hack and slash the first 20% of chapter seven.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43663
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Evan Cheng [Sat, 3 Nov 2007 07:20:12 +0000 (07:20 +0000)]
There are times when the coalescer would not coalesce away a copy but the copy
can be eliminated by the allocator is the destination and source targets the
same register. The most common case is when the source and destination registers
are in different class. For example, on x86 mov32to32_ targets GR32_ which
contains a subset of the registers in GR32.
The allocator can do 2 things:
1. Set the preferred allocation for the destination of a copy to that of its source.
2. After allocation is done, change the allocation of a copy destination (if
legal) so the copy can be eliminated.
This eliminates 443 extra moves from 403.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43662
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Dan Gohman [Fri, 2 Nov 2007 22:24:01 +0000 (22:24 +0000)]
Add std:: to sort calls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43652
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Dan Gohman [Fri, 2 Nov 2007 22:22:02 +0000 (22:22 +0000)]
Change illegal uses of ++ to uses of STLExtra.h's next function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43651
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Ted Kremenek [Fri, 2 Nov 2007 18:04:20 +0000 (18:04 +0000)]
Added overloaded version of Deserializer::ReadOwnedPtr which allows
the target pointer to be passed by reference. This can result in less
typing, as the object to be deserialized can be inferred from the
argument.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43647
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Evan Cheng [Fri, 2 Nov 2007 17:45:40 +0000 (17:45 +0000)]
Unbreak tailcall opt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43646
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Evan Cheng [Fri, 2 Nov 2007 17:36:58 +0000 (17:36 +0000)]
Add run line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43645
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Evan Cheng [Fri, 2 Nov 2007 17:35:08 +0000 (17:35 +0000)]
One more extract_subreg coalescing bug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43644
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Chris Lattner [Fri, 2 Nov 2007 17:04:20 +0000 (17:04 +0000)]
add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43642
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Duncan Sands [Fri, 2 Nov 2007 15:18:06 +0000 (15:18 +0000)]
Fix a thinko.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43639
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Neil Booth [Fri, 2 Nov 2007 15:10:05 +0000 (15:10 +0000)]
Remove some unnecessary C-style statics.
Restore an assertion that arithmetic can be performed on this format.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43638
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Chris Lattner [Fri, 2 Nov 2007 05:54:25 +0000 (05:54 +0000)]
fix typos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43637
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Chris Lattner [Fri, 2 Nov 2007 05:42:52 +0000 (05:42 +0000)]
Finish chapter 6, and add a spiffy demo that shows off the language.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43636
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Owen Anderson [Fri, 2 Nov 2007 04:01:21 +0000 (04:01 +0000)]
VAArgInst does, in fact, read memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43633
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Hartmut Kaiser [Fri, 2 Nov 2007 01:44:08 +0000 (01:44 +0000)]
Updated VC++ build system
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43631
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Evan Cheng [Fri, 2 Nov 2007 01:26:22 +0000 (01:26 +0000)]
Missing a getNumOperands check.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43630
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Neil Booth [Thu, 1 Nov 2007 22:51:07 +0000 (22:51 +0000)]
Add back line whose removal somehow crept into prior patch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43627
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Neil Booth [Thu, 1 Nov 2007 22:43:37 +0000 (22:43 +0000)]
When converting to integer, do bit manipulations in the destination
memory rather than in a copy of the APFloat. This avoids problems
when the destination is wider than our significand and is cleaner.
Also provide deterministic values in all cases where conversion
fails, namely zero for NaNs and the minimal or maximal value
respectively for underflow or overflow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43626
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Ted Kremenek [Thu, 1 Nov 2007 22:23:34 +0000 (22:23 +0000)]
Removed ReadVal from SerializeTrait<T>, and also removed it from
Deserializer.
There were issues with Visual C++ barfing when instantiating
SerializeTrait<T> when "T" was an abstract class AND
SerializeTrait<T>::ReadVal was *never* called:
template <typename T>
struct SerializeTrait {
<SNIP>
static inline T ReadVal(Deserializer& D) { T::ReadVal(D); }
<SNIP>
};
Visual C++ would complain about "T" being an abstract class, even
though ReadVal was never instantiated (although one of the other
member functions were).
Removing this from the trait is not a big deal. It was used hardly
ever, and users who want "read-by-value" deserialization can simply
call the appropriate methods directly instead of relying on
trait-based-dispatch. The trait dispatch for
serialization/deserialization is simply sugar in many cases (like this
one).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43624
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Duncan Sands [Thu, 1 Nov 2007 20:53:16 +0000 (20:53 +0000)]
Executive summary: getTypeSize -> getTypeStoreSize / getABITypeSize.
The meaning of getTypeSize was not clear - clarifying it is important
now that we have x86 long double and arbitrary precision integers.
The issue with long double is that it requires 80 bits, and this is
not a multiple of its alignment. This gives a primitive type for
which getTypeSize differed from getABITypeSize. For arbitrary precision
integers it is even worse: there is the minimum number of bits needed to
hold the type (eg: 36 for an i36), the maximum number of bits that will
be overwriten when storing the type (40 bits for i36) and the ABI size
(i.e. the storage size rounded up to a multiple of the alignment; 64 bits
for i36).
This patch removes getTypeSize (not really - it is still there but
deprecated to allow for a gradual transition). Instead there is:
(1) getTypeSizeInBits - a number of bits that suffices to hold all
values of the type. For a primitive type, this is the minimum number
of bits. For an i36 this is 36 bits. For x86 long double it is 80.
This corresponds to gcc's TYPE_PRECISION.
(2) getTypeStoreSizeInBits - the maximum number of bits that is
written when storing the type (or read when reading it). For an
i36 this is 40 bits, for an x86 long double it is 80 bits. This
is the size alias analysis is interested in (getTypeStoreSize
returns the number of bytes). There doesn't seem to be anything
corresponding to this in gcc.
(3) getABITypeSizeInBits - this is getTypeStoreSizeInBits rounded
up to a multiple of the alignment. For an i36 this is 64, for an
x86 long double this is 96 or 128 depending on the OS. This is the
spacing between consecutive elements when you form an array out of
this type (getABITypeSize returns the number of bytes). This is
TYPE_SIZE in gcc.
Since successive elements in a SequentialType (arrays, pointers
and vectors) need to be aligned, the spacing between them will be
given by getABITypeSize. This means that the size of an array
is the length times the getABITypeSize. It also means that GEP
computations need to use getABITypeSize when computing offsets.
Furthermore, if an alloca allocates several elements at once then
these too need to be aligned, so the size of the alloca has to be
the number of elements multiplied by getABITypeSize. Logically
speaking this doesn't have to be the case when allocating just
one element, but it is simpler to also use getABITypeSize in this
case. So alloca's and mallocs should use getABITypeSize. Finally,
since gcc's only notion of size is that given by getABITypeSize, if
you want to output assembler etc the same as gcc then getABITypeSize
is the size you want.
Since a store will overwrite no more than getTypeStoreSize bytes,
and a read will read no more than that many bytes, this is the
notion of size appropriate for alias analysis calculations.
In this patch I have corrected all type size uses except some of
those in ScalarReplAggregates, lib/Codegen, lib/Target (the hard
cases). I will get around to auditing these too at some point,
but I could do with some help.
Finally, I made one change which I think wise but others might
consider pointless and suboptimal: in an unpacked struct the
amount of space allocated for a field is now given by the ABI
size rather than getTypeStoreSize. I did this because every
other place that reserves memory for a type (eg: alloca) now
uses getABITypeSize, and I didn't want to make an exception
for unpacked structs, i.e. I did it to make things more uniform.
This only effects structs containing long doubles and arbitrary
precision integers. If someone wants to pack these types more
tightly they can always use a packed struct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43620
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Duncan Sands [Thu, 1 Nov 2007 10:50:26 +0000 (10:50 +0000)]
Don't barf on empty basic blocks. Do not rely on assert
doing something - this needs to work for release builds
too. I chose to just abort rather than following the
fancy logic of abortIfBroken, because (1) it is a pain
to do otherwise, and (2) nothing is going to work if the
module is this broken.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43611
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Bill Wendling [Thu, 1 Nov 2007 09:38:19 +0000 (09:38 +0000)]
Silence a warning saying that the variables always resolve to "true" in an
expression.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43610
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