Jakob Stoklund Olesen [Wed, 4 May 2011 19:01:59 +0000 (19:01 +0000)]
Explicitly request -join-physregs for some tests that depend on it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130855
91177308-0d34-0410-b5e6-
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Devang Patel [Wed, 4 May 2011 19:00:57 +0000 (19:00 +0000)]
Do not emit location expression size twice.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130854
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 4 May 2011 18:46:56 +0000 (18:46 +0000)]
Fix cmake build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130850
91177308-0d34-0410-b5e6-
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Akira Hatanaka [Wed, 4 May 2011 18:28:36 +0000 (18:28 +0000)]
Remove LLVM IR metadata in test case committed in r130847.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130849
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Akira Hatanaka [Wed, 4 May 2011 17:54:27 +0000 (17:54 +0000)]
Prevent instructions using $gp from being placed between a jalr and the instruction that restores the clobbered $gp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130847
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 4 May 2011 17:44:06 +0000 (17:44 +0000)]
Producing a DW_FORM_addr for DW_AT_stmt_list is probably correct, but
it is both inefficient and unexpected by dwarfdump. Change to
a DW_FORM_data4.
While in here, change the predicate name to reflect that the position
is not really absolute (it is an offset), just that the linker needs a
relocation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130846
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Jakob Stoklund Olesen [Wed, 4 May 2011 16:45:05 +0000 (16:45 +0000)]
Rename -disable-physical-join to -join-physregs and invert it.
Physreg joining is still on by default, but I will turn it off shortly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130844
91177308-0d34-0410-b5e6-
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Devang Patel [Wed, 4 May 2011 16:34:02 +0000 (16:34 +0000)]
Tighten up check for empty (i.e. no meaningful debug info) module. This fixes dwarf-die2.c test case from gcc test suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130842
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Duncan Sands [Wed, 4 May 2011 16:05:05 +0000 (16:05 +0000)]
Add variations on: max(x,y) >= min(x,z) folds to true. This isn't that common,
but according to my super-optimizer there are only two missed simplifications
of -instsimplify kind when compiling bzip2, and this is one of them. It amuses
me to have bzip2 be perfectly optimized as far as instsimplify goes!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130840
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Nick Lewycky [Wed, 4 May 2011 04:03:04 +0000 (04:03 +0000)]
Emit gcov data files to the directory specified in the metadata produced by the
frontend, if applicable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130835
91177308-0d34-0410-b5e6-
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Nick Lewycky [Wed, 4 May 2011 03:58:45 +0000 (03:58 +0000)]
Fix crash when not setting GCOV_PREFIX.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130834
91177308-0d34-0410-b5e6-
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Bill Wendling [Wed, 4 May 2011 02:40:54 +0000 (02:40 +0000)]
Remove dead intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130831
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Andrew Trick [Wed, 4 May 2011 02:10:13 +0000 (02:10 +0000)]
indvars: Added DisableIVRewrite and WidenIVs.
This adds functionality to remove size/zero extension during indvars
without generating a canonical IV and rewriting all IV users. It's
disabled by default so should have no effect on codegen. Work in progress.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130829
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Nick Lewycky [Wed, 4 May 2011 01:03:02 +0000 (01:03 +0000)]
The system suppression file should catch these, but since they *once again* are
not, I'll just add them here and be done with it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130819
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Jakob Stoklund Olesen [Wed, 4 May 2011 01:01:47 +0000 (01:01 +0000)]
Don't depend on the physreg coalescing order.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130818
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 4 May 2011 01:01:44 +0000 (01:01 +0000)]
Don't run this test through -regalloc=basic.
The basic allocator is really bad about hinting, so it doesn't eliminate all
copies when physreg joining is disabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130817
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 4 May 2011 01:01:41 +0000 (01:01 +0000)]
Fix register-dependent XCore tests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130816
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Jakob Stoklund Olesen [Wed, 4 May 2011 01:01:39 +0000 (01:01 +0000)]
Fix register-dependent test in MSP430.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130815
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Jakob Stoklund Olesen [Wed, 4 May 2011 01:01:36 +0000 (01:01 +0000)]
Implement MSP430RegisterInfo::getMatchingSuperRegClass to enable cross-class
coalescing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130814
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Eric Christopher [Wed, 4 May 2011 00:48:02 +0000 (00:48 +0000)]
Remove some random comments that snuck in from somewhere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130812
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Jakob Stoklund Olesen [Tue, 3 May 2011 22:31:24 +0000 (22:31 +0000)]
Mark ultra-super-registers QQQQ as call-clobbered instead of the D sub-registers.
LiveVariables doesn't understand that clobbering D0 and D1 completely overwrites
Q0, so if Q0 is live-in to a function, its live range will extend beyond a
function call that only clobbers D0 and D1. This shows up in the
ARM/2009-11-01-NeonMoves test case.
LiveVariables should probably implement the much stricter rules for physreg
liveness that RAFast imposes - a physreg is killed by the first use of any
alias.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130801
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Jakob Stoklund Olesen [Tue, 3 May 2011 22:31:21 +0000 (22:31 +0000)]
Fix a bunch of ARM tests to be register allocation independent.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130800
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Andrew Trick [Tue, 3 May 2011 22:24:10 +0000 (22:24 +0000)]
indvars: Added canExpandBackEdgeTakenCount.
Only create a canonical IV for backedge taken count if it will
actually be used by LinearFunctionTestReplace. And some related
cleanup, preparing to reduce dependence on canonical IVs.
No significant effect on x86 or arm in the test-suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130799
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Devang Patel [Tue, 3 May 2011 21:50:34 +0000 (21:50 +0000)]
Even if the subprogram is going to use AT_specification, emit DW_AT_MIPS_linkage_name. This helps gdb and fixes var-path-expr.exp regression reported by gdb testsuite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130794
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Daniel Dunbar [Tue, 3 May 2011 21:33:37 +0000 (21:33 +0000)]
MCDwarf: Don't save Twine to local variable, this is almost never safe to do
(and should thus never be done).
- Should fix a crash on win32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130793
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Bill Wendling [Tue, 3 May 2011 21:11:17 +0000 (21:11 +0000)]
Replace the "movnt" intrinsics with a native store + nontemporal metadata bit.
<rdar://problem/
8460511>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130791
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Jakob Stoklund Olesen [Tue, 3 May 2011 20:42:13 +0000 (20:42 +0000)]
Gracefully handle invalid live ranges. Fix PR9831.
Register coalescing can sometimes create live ranges that end in the middle of a
basic block without any killing instruction. When SplitKit detects this, it will
repair the live range by shrinking it to its uses.
Live range splitting also needs to know about this. When the range shrinks so
much that it becomes allocatable, live range splitting fails because it can't
find a good split point. It is paranoid about making progress, so an allocatable
range is considered an error.
The coalescer should really not be creating these bad live ranges. They appear
when coalescing dead copies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130787
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Duncan Sands [Tue, 3 May 2011 19:53:10 +0000 (19:53 +0000)]
Implement some basic simplifications involving min/max, for example
max(a,b) >= a -> true. According to my super-optimizer, these are
by far the most common simplifications (of the -instsimplify kind)
that occur in the testsuite and aren't caught by -std-compile-opts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130780
91177308-0d34-0410-b5e6-
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Jim Grosbach [Tue, 3 May 2011 19:09:56 +0000 (19:09 +0000)]
Tidy up. Add missing newline to generated file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130779
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Evan Cheng [Tue, 3 May 2011 19:09:32 +0000 (19:09 +0000)]
Make the test less likely to fail with minor changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130778
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Akira Hatanaka [Tue, 3 May 2011 18:41:54 +0000 (18:41 +0000)]
Fix function MipsRegisterInfo::getRegisterNumbering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130774
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Bob Wilson [Tue, 3 May 2011 17:54:49 +0000 (17:54 +0000)]
Remove test for iOS divmod function, since that is disabled for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130769
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Bob Wilson [Tue, 3 May 2011 17:33:22 +0000 (17:33 +0000)]
Temporarily disable use of divmod compiler-rt functions for iOS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130766
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Bruno Cardoso Lopes [Tue, 3 May 2011 17:29:29 +0000 (17:29 +0000)]
Fold ARM coprocessor intrinsics patterns into the instructions defs whenever
it's possible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130764
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Bruno Cardoso Lopes [Tue, 3 May 2011 17:29:22 +0000 (17:29 +0000)]
Add a few ARM coprocessor intrinsics. Testcases included
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130763
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Bob Wilson [Tue, 3 May 2011 17:22:56 +0000 (17:22 +0000)]
Fix a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130761
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Devang Patel [Tue, 3 May 2011 16:45:22 +0000 (16:45 +0000)]
If the front end has emitted llvm.dbg.cu and other debug info anchors (clang does it now) then use them directly. This saves one scan of entire module, to collect debug info, which in turns saves few machine cycles at compile time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130759
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Devang Patel [Tue, 3 May 2011 16:18:28 +0000 (16:18 +0000)]
Use llvm.dbg.cu named metadata to collect compile units.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130756
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Benjamin Kramer [Tue, 3 May 2011 16:00:27 +0000 (16:00 +0000)]
Remove unused variables caught by GCC's -Wunused-but-set-variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130755
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Rafael Espindola [Tue, 3 May 2011 15:56:16 +0000 (15:56 +0000)]
Pass --disable-cfi to llc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130754
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Michael J. Spencer [Tue, 3 May 2011 03:42:50 +0000 (03:42 +0000)]
Add pentium{3,4}m cpus. Patch by Alexander Best!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130749
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Eric Christopher [Tue, 3 May 2011 01:28:32 +0000 (01:28 +0000)]
xmm0 is an implicit parameter in this and so shouldn't be in the
string template.
Fixes rdar://
8493866
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130747
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Dan Gohman [Tue, 3 May 2011 00:46:49 +0000 (00:46 +0000)]
Add an unfolded offset field to LSR's Formula record. This is used to
model constants which can be added to base registers via add-immediate
instructions which don't require an additional register to materialize
the immediate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130743
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Owen Anderson [Mon, 2 May 2011 22:25:45 +0000 (22:25 +0000)]
Other parts of the SelectionDAG framework assume that targets use their pointer type for vector indices. Make the vector unrolling code respect that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130733
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Devang Patel [Mon, 2 May 2011 21:57:00 +0000 (21:57 +0000)]
Scanning entire basic block may be too expensive in terms of compile time. Instead, just use whatever location info first non-phi instruction has.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130729
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Jakob Stoklund Olesen [Mon, 2 May 2011 20:36:53 +0000 (20:36 +0000)]
Handle <def,undef> in the second loop as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130718
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Eric Christopher [Mon, 2 May 2011 20:16:33 +0000 (20:16 +0000)]
Apparently the check for direct calls is unnecessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130716
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Jakob Stoklund Olesen [Mon, 2 May 2011 20:06:30 +0000 (20:06 +0000)]
Use the PrintReg adaptor to correctly print live-in registers in debug output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130715
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Jakob Stoklund Olesen [Mon, 2 May 2011 20:06:28 +0000 (20:06 +0000)]
Only ignore <undef> use operands, keep the <def,undef> ops.
Def operands may also have an <undef> flag, but that just means that a
sub-register redef doesn't actually read the super-register. For physical
registers, it has no meaning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130714
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Rafael Espindola [Mon, 2 May 2011 19:51:34 +0000 (19:51 +0000)]
Pass -disable-cfi to llc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130713
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Rafael Espindola [Mon, 2 May 2011 19:45:24 +0000 (19:45 +0000)]
llvmc: Pass -disable-cfi to llc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130712
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Duncan Sands [Mon, 2 May 2011 18:51:41 +0000 (18:51 +0000)]
Fix PR9579: when simplifying a compare to "true" or "false", and it was
a vector compare, generate a vector result rather than i1 (and crashing).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130706
91177308-0d34-0410-b5e6-
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Duncan Sands [Mon, 2 May 2011 18:41:29 +0000 (18:41 +0000)]
Remove unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130705
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Devang Patel [Mon, 2 May 2011 18:19:17 +0000 (18:19 +0000)]
Emit debug info for global variables first.
This works around a limitation in gdb which is reported by following inherit.exp test failures from gdb testsuite.
gdb.cp/inherit.exp: print g_vB.vB::vb
gdb.cp/inherit.exp: print g_vB.vB::vx
gdb.cp/inherit.exp: print g_vC.vC::vc
gdb.cp/inherit.exp: print g_vC.vC::vx
gdb.cp/inherit.exp: print g_vD.vB::vb
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130702
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Duncan Sands [Mon, 2 May 2011 16:34:19 +0000 (16:34 +0000)]
Forgot to commit the changes to this file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130695
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Duncan Sands [Mon, 2 May 2011 16:27:02 +0000 (16:27 +0000)]
Move some rem transforms out of instcombine and into instsimplify.
This automagically provides a transform noticed by my super-optimizer
as occurring quite often: "rem x, (select cond, x, 1)" -> 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130694
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Rafael Espindola [Mon, 2 May 2011 15:58:16 +0000 (15:58 +0000)]
Add 130690 back.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130693
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Rafael Espindola [Mon, 2 May 2011 15:49:52 +0000 (15:49 +0000)]
Only produce the eh_frame section if we have at least one personality function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130692
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Rafael Espindola [Mon, 2 May 2011 15:42:31 +0000 (15:42 +0000)]
Revert while I debug the tests that use march but not mtriple.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130691
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Rafael Espindola [Mon, 2 May 2011 15:00:52 +0000 (15:00 +0000)]
Move ppc OS X to cfi too. I am building it on an old ppc mini, but it will take some time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130690
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Chandler Carruth [Mon, 2 May 2011 05:49:01 +0000 (05:49 +0000)]
Remove an unused variable in NDEBUG (found with -Wunused-variable).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130688
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Jakob Stoklund Olesen [Mon, 2 May 2011 05:29:58 +0000 (05:29 +0000)]
Minimize the slot indexes spanned by register ranges created when splitting.
When an interfering live range ends at a dead slot index between two
instructions, make sure that the inserted copy instruction gets a slot index
after the dead ones. This makes it possible to avoid the interference.
Ideally, there shouldn't be interference ending at a deleted instruction, but
physical register coalescing can sometimes do that to sub-registers.
This fixes PR9823.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130687
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Jakob Stoklund Olesen [Mon, 2 May 2011 05:29:56 +0000 (05:29 +0000)]
Add a SlotIndexes::insertMachineInstrInMaps to insert the instruction after any null indexes.
This makes a difference if a live interval is referring to a deleted
instruction. It can be important to insert an instruction before or after a
deleted instruction to avoid interference.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130686
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Nick Lewycky [Mon, 2 May 2011 05:24:47 +0000 (05:24 +0000)]
In option typo correction, consider -foo=VALUE flags as two distinct parts. The
comments claimed it did this, but the LHS value was actually an unused variable.
The new system considers only the '-foo' part when comparing it for typos
against flags that have values, but still look at the whole string for flags
that don't. That way, we'll still correct '-inst=combine' to '-instcombine'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130685
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Nick Lewycky [Mon, 2 May 2011 05:05:29 +0000 (05:05 +0000)]
Remove dead variable pointed out by GCC 4.6 warnings, and reflow this a little
to scope a variable more tightly per llvm coding style. No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130684
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Chris Lattner [Sun, 1 May 2011 18:27:11 +0000 (18:27 +0000)]
enhance memcpyopt to obey -fno-builtin and friends. This addresses a
problem reported on cfe-dev.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130661
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Rafael Espindola [Sun, 1 May 2011 15:44:13 +0000 (15:44 +0000)]
Add r130623 back now that ELF has been fixed to work with -fno-dwarf2-cfi-asm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130658
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NAKAMURA Takumi [Sun, 1 May 2011 13:29:49 +0000 (13:29 +0000)]
Windows/DynamicLibrary.inc: Clean up ELM_Callback. We may check the decl instead of the versions of individual libraries.
autoconf: Add checking ELM_Callback decl for mingw32 and mingw-w64.
cmake/config-ix.cmake: Add checking ELM_Callback decl for win32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130657
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Chandler Carruth [Sun, 1 May 2011 06:14:10 +0000 (06:14 +0000)]
Remove an unused variable from this function introduced in r130637,
likely a result of copy/paste.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130640
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Rafael Espindola [Sun, 1 May 2011 04:49:54 +0000 (04:49 +0000)]
GCC uses a different encoding of pointers in the FDE when using
-fno-dwarf2-cfi-asm. Implement the same behavior.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130637
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Rafael Espindola [Sun, 1 May 2011 04:19:24 +0000 (04:19 +0000)]
I forgot these files in the previous commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130635
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Rafael Espindola [Sun, 1 May 2011 03:50:49 +0000 (03:50 +0000)]
Simplify the handling of pcrel relocations on ELF. Now we do the right thing
for all symbol differences and can drop the old EmitPCRelSymbolValue
method.
This also make getExprForFDESymbol on ELF equal to the one on MachO, and it
can be made non-virtual.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130634
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Oscar Fuentes [Sun, 1 May 2011 02:12:20 +0000 (02:12 +0000)]
Update instructions: LLVM.cmake is now LLVMConfig.cmake
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130631
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Rafael Espindola [Sat, 30 Apr 2011 23:03:44 +0000 (23:03 +0000)]
Revert the previous patch while I figure out how to make llvm-gcc
less agressive about disabling cfi on linux :-(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130626
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Jakob Stoklund Olesen [Sat, 30 Apr 2011 23:00:05 +0000 (23:00 +0000)]
X86AsmPrinter doesn't know how to handle the X86II::MO_GOT_ABSOLUTE_ADDRESS flag
after folding ADD32ri to ADD32mi, so don't do that.
This only happens when the greedy register allocator gets itself in trouble and
spills %vreg9 here:
16L %vreg9<def> = MOVPC32r 0, %ESP<imp-use>; GR32:%vreg9
48L %vreg9<def> = ADD32ri %vreg9, <es:_GLOBAL_OFFSET_TABLE_>[TF=1], %EFLAGS<imp-def,dead>; GR32:%vreg9
That should never happen, the live range should be split instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130625
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Rafael Espindola [Sat, 30 Apr 2011 22:29:54 +0000 (22:29 +0000)]
Enable CFI on OS X.
Currently the output should be almost identical to the one produced by CodeGen
to make the transition easier.
The only two differences I know of are:
* Some files get an extra advance loc of size 0. This will be fixed when
relaxations are enabled.
* The optimization of declaring an EH symbol as an external variable is not
implemented. This is a subset of adding the nounwind attribute, so we if really
this at -O0 we should probably do it at the IL level.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130623
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Jakob Stoklund Olesen [Sat, 30 Apr 2011 19:12:33 +0000 (19:12 +0000)]
When a physreg is live-in and live through a basic block, make sure its live
range covers the entire block.
The live range can't be terminated at a random instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130619
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Benjamin Kramer [Sat, 30 Apr 2011 18:16:07 +0000 (18:16 +0000)]
InstCombine: Turn (zext A) udiv (zext B) into (zext (A udiv B)). Same for urem or constant B.
This obviously helps a lot if the division would be turned into a libcall
(think i64 udiv on i386), but div is also one of the few remaining instructions
on modern CPUs that become more expensive when the bitwidth gets bigger.
This also helps register pressure on i386 when dividing chars, divb needs
two 8-bit parts of a 16 bit register as input where divl uses two registers.
int foo(unsigned char a) { return a/10; }
int bar(unsigned char a, unsigned char b) { return a/b; }
compiles into (x86_64)
_foo:
imull $205, %edi, %eax
shrl $11, %eax
ret
_bar:
movzbl %dil, %eax
divb %sil, %al
movzbl %al, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130615
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Benjamin Kramer [Sat, 30 Apr 2011 18:16:00 +0000 (18:16 +0000)]
Use SimplifyDemandedBits on div instructions.
This folds away silly stuff like (a&255)/1000 -> 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130614
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Benjamin Kramer [Sat, 30 Apr 2011 18:15:53 +0000 (18:15 +0000)]
FileCheckize.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130613
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Rafael Espindola [Sat, 30 Apr 2011 16:34:57 +0000 (16:34 +0000)]
Implement MCAsmStreamer::EmitEHSymAttributes. Doing this in the asm streamer
is a bit ugly, but doing it on the base MCStreamer would be redundant
with the object streamer which does it using SD.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130611
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Rafael Espindola [Sat, 30 Apr 2011 16:22:46 +0000 (16:22 +0000)]
Handle PrivateExtern eh symbols.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130609
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Jakob Stoklund Olesen [Sat, 30 Apr 2011 08:00:50 +0000 (08:00 +0000)]
Allow folded spills in test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130599
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Jakob Stoklund Olesen [Sat, 30 Apr 2011 06:42:21 +0000 (06:42 +0000)]
Avoid using stale entries form the sibling value map.
This could happen when trying to use a value that had been eliminated after dead
code elimination and folding loads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130597
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Jakob Stoklund Olesen [Sat, 30 Apr 2011 05:07:46 +0000 (05:07 +0000)]
Use hysteresis for local live range splitting as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130596
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NAKAMURA Takumi [Sat, 30 Apr 2011 03:53:56 +0000 (03:53 +0000)]
runtime/libprofile/PathProfiling.c: Don't use // comment in C source.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130589
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Rafael Espindola [Sat, 30 Apr 2011 03:44:37 +0000 (03:44 +0000)]
Add all the plumbing needed for MC to expand cfi to the old tables in
the final assembly. It is the same technique used when targeting
assemblers that don't support .loc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130587
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Rafael Espindola [Sat, 30 Apr 2011 03:21:04 +0000 (03:21 +0000)]
Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130585
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Jakob Stoklund Olesen [Sat, 30 Apr 2011 03:13:08 +0000 (03:13 +0000)]
Update comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130582
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Jakob Stoklund Olesen [Sat, 30 Apr 2011 01:37:54 +0000 (01:37 +0000)]
Use a greedy algorithm for allocating registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130568
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Jakob Stoklund Olesen [Sat, 30 Apr 2011 01:37:52 +0000 (01:37 +0000)]
Weekly fix of register allocation dependent unit tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130567
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Bill Wendling [Fri, 29 Apr 2011 23:45:22 +0000 (23:45 +0000)]
Print out the 'nontemporal' info on a store.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130562
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Eli Friedman [Fri, 29 Apr 2011 23:34:52 +0000 (23:34 +0000)]
Make FastEmit_ri_ try a bit harder to succeed for supported operations; FastEmit_i can fail for non-Thumb2 ARM. Makes ARMSimplifyAddress work correctly, and reduces the number of fast-isel bailouts on non-Thumb ARM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130560
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Eric Christopher [Fri, 29 Apr 2011 23:12:01 +0000 (23:12 +0000)]
80-col.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130558
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Eli Friedman [Fri, 29 Apr 2011 22:56:48 +0000 (22:56 +0000)]
Zap a couple now-unused functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130557
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Eli Friedman [Fri, 29 Apr 2011 22:48:03 +0000 (22:48 +0000)]
Switch to ImmLeaf (which can be used by FastISel) for a few more common ARM/Thumb2 patterns.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130552
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Devang Patel [Fri, 29 Apr 2011 22:28:59 +0000 (22:28 +0000)]
Assing line number info to new PHIs created by SSA updater.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130551
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Eric Christopher [Fri, 29 Apr 2011 22:07:50 +0000 (22:07 +0000)]
Add FastEmitInst_ii for the arm fast isel generator. It doesn't use it, but
if it ever did it needs the def machinery.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130549
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Eli Friedman [Fri, 29 Apr 2011 21:58:31 +0000 (21:58 +0000)]
Filter out pattterns from the FastISel emitter which it doesn't actually know how to handle. No significant functionality change at the moment, but it's necessary for some changes I'm planning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130547
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Eric Christopher [Fri, 29 Apr 2011 21:56:31 +0000 (21:56 +0000)]
Some cleanup and optimize fallthrough more.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130546
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