Commit Graph

72027 Commits

Author SHA1 Message Date
Duncan Sands
448a6d3cc2 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-b5e6-96231b3b80d8
2011-05-02 18:51:41 +00:00
Duncan Sands
00676a6df1 Remove unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130705 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 18:41:29 +00:00
Devang Patel
c455bb7dc7 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 18:19:17 +00:00
Duncan Sands
194cfb08ff Forgot to commit the changes to this file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130695 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 16:34:19 +00:00
Duncan Sands
f24ed77d24 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 16:27:02 +00:00
Rafael Espindola
2866edf120 Add 130690 back.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130693 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 15:58:16 +00:00
Rafael Espindola
e17e6c01c8 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 15:49:52 +00:00
Rafael Espindola
b2d7336fde Revert while I debug the tests that use march but not mtriple.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130691 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 15:42:31 +00:00
Rafael Espindola
433771c514 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 15:00:52 +00:00
Chandler Carruth
79142427a0 Remove an unused variable in NDEBUG (found with -Wunused-variable).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130688 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 05:49:01 +00:00
Jakob Stoklund Olesen
bb30dd40ed 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 05:29:58 +00:00
Jakob Stoklund Olesen
8e33095cd4 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 05:29:56 +00:00
Nick Lewycky
95d206a9c7 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 05:24:47 +00:00
Nick Lewycky
71f234ba6a 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02 05:05:29 +00:00
Chris Lattner
149f5283f9 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01 18:27:11 +00:00
Rafael Espindola
450a5a1207 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01 15:44:13 +00:00
NAKAMURA Takumi
6073a05240 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01 13:29:49 +00:00
Chandler Carruth
9bc1537488 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01 06:14:10 +00:00
Rafael Espindola
5426a9ee37 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01 04:49:54 +00:00
Rafael Espindola
c35280647b I forgot these files in the previous commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130635 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01 04:19:24 +00:00
Rafael Espindola
debd7e4e8b 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01 03:50:49 +00:00
Oscar Fuentes
d4b0c6c3fa Update instructions: LLVM.cmake is now LLVMConfig.cmake
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130631 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01 02:12:20 +00:00
Rafael Espindola
2b3e12d0cb 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 23:03:44 +00:00
Jakob Stoklund Olesen
60045c233a 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 23:00:05 +00:00
Rafael Espindola
89fc9e8f5e 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 22:29:54 +00:00
Jakob Stoklund Olesen
ec7e4fff96 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 19:12:33 +00:00
Benjamin Kramer
7d6eb5a018 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 18:16:07 +00:00
Benjamin Kramer
23b02cd031 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 18:16:00 +00:00
Benjamin Kramer
2f8e038b35 FileCheckize.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130613 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 18:15:53 +00:00
Rafael Espindola
277abc8172 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 16:34:57 +00:00
Rafael Espindola
97f7f4e43d Handle PrivateExtern eh symbols.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130609 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 16:22:46 +00:00
Jakob Stoklund Olesen
8e1e4cf226 Allow folded spills in test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130599 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 08:00:50 +00:00
Jakob Stoklund Olesen
6ee56e658a 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 06:42:21 +00:00
Jakob Stoklund Olesen
66446c803a Use hysteresis for local live range splitting as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130596 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 05:07:46 +00:00
NAKAMURA Takumi
4f5558e676 runtime/libprofile/PathProfiling.c: Don't use // comment in C source.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130589 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 03:53:56 +00:00
Rafael Espindola
f1a5c7ec04 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 03:44:37 +00:00
Rafael Espindola
a37bd1d02c Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130585 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 03:21:04 +00:00
Jakob Stoklund Olesen
141f529baf Update comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130582 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 03:13:08 +00:00
Jakob Stoklund Olesen
5aa3211e2d Use a greedy algorithm for allocating registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130568 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 01:37:54 +00:00
Jakob Stoklund Olesen
d5b679c8ce Weekly fix of register allocation dependent unit tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130567 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-30 01:37:52 +00:00
Bill Wendling
d65ba721cc Print out the 'nontemporal' info on a store.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130562 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 23:45:22 +00:00
Eli Friedman
b2b03fc2fa 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 23:34:52 +00:00
Eric Christopher
5ac179ccd2 80-col.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130558 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 23:12:01 +00:00
Eli Friedman
b451770b26 Zap a couple now-unused functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130557 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 22:56:48 +00:00
Eli Friedman
c573e2c7ea 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 22:48:03 +00:00
Devang Patel
40348e8d1f Assing line number info to new PHIs created by SSA updater.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130551 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 22:28:59 +00:00
Eric Christopher
d94bc549fc 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 22:07:50 +00:00
Eli Friedman
206a10cf28 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 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 21:58:31 +00:00
Eric Christopher
632ae892e6 Some cleanup and optimize fallthrough more.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130546 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 21:56:31 +00:00
Rafael Espindola
1f6c87554a Avoid some uses of .uleb128. This is a small speedup and more importantly
lets this code be used when producing assembly code for old assemblers without
uleb support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130544 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 21:50:57 +00:00