Rafael Espindola
c35280647b
I forgot these files in the previous commit.
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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
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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
Rafael Espindola
2b3e12d0cb
Revert the previous patch while I figure out how to make llvm-gcc
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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
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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.
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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
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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.
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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.
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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
Rafael Espindola
277abc8172
Implement MCAsmStreamer::EmitEHSymAttributes. Doing this in the asm streamer
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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.
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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
6ee56e658a
Avoid using stale entries form the sibling value map.
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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.
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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
Rafael Espindola
f1a5c7ec04
Add all the plumbing needed for MC to expand cfi to the old tables in
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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.
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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.
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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.
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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
Bill Wendling
d65ba721cc
Print out the 'nontemporal' info on a store.
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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.
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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.
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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.
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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.
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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.
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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
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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
Eric Christopher
632ae892e6
Some cleanup and optimize fallthrough more.
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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
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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
Rafael Espindola
7f46b08082
Implement MCAsmStreamer::EmitCFIDefCfa.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130543 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 21:41:06 +00:00
Devang Patel
0b2fb39d8d
Print new instructions without DebugLoc.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130542 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 21:36:04 +00:00
Eli Friedman
9ebf57ae13
Re-committing r130454, which does not in fact break anything.
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Fix a rather obscure crash caused by ARM fast-isel generating code which redefines a register.
rdar://problem/9338332 .
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130539 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 21:22:56 +00:00
Devang Patel
bd5426a4f2
Preserve line number information.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130536 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 20:38:55 +00:00
Eric Christopher
bcf26aee86
Add trunc->branch support, this won't help with clang's i8->i1 truncations
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for bools, but is a start.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130534 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 20:02:39 +00:00
Peter Collingbourne
57808b3da0
SimplifyCFG: Expose phi node folding cost threshold as command line parameter
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130528 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:47:38 +00:00
Peter Collingbourne
f15907fead
SimplifyCFG: Add CostRemaining parameter to DominatesMergePoint
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130527 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:47:31 +00:00
Peter Collingbourne
8a70192b51
SimplifyCFG: Add Trunc, ZExt and SExt to the list of cheap instructions for phi node folding
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130526 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:47:25 +00:00
Daniel Dunbar
c8497b6a25
MCAsmLayout: Add support for computing the symbol offset of variables. Not
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currently used, because variables don't get reported as being "defined".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130524 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:20:20 +00:00
Daniel Dunbar
90604ab725
MC: Change variable symbols to be recognized as defined, by assigning their sections based on FindAssociatedSection().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130523 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:20:17 +00:00
Daniel Dunbar
173aa9ce32
MC/Mach-O: Update getSymbolAddress() to support evaluation of variables.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130522 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:13:42 +00:00
Daniel Dunbar
5ff919b324
MC/Mach-O: Allow emission of relocations for variables in some more cases.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130520 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:10:47 +00:00
Daniel Dunbar
08b9935b51
MC/Mach-O: Find section ordinal's by looking at the symbol, instead of assuming they are present in a fragment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130519 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:07:43 +00:00
Devang Patel
49a3ff9d17
Hoist MCLineEntry construction AsmPrinter so that anyone who derives from AsmPrinter can have line number entries.
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PR 9810
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130518 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:00:54 +00:00
Daniel Dunbar
0eab5c4d85
MCExpr: Add FindAssociatedSection, which attempts to mirror the 'as' semantics
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that associate sections with expressions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130517 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 18:00:03 +00:00
Daniel Dunbar
6db7fe8736
MC/AsmParser: Generalize a check.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130515 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 17:53:11 +00:00
Douglas Gregor
c003229ddc
Fix a C++0x portability issue with std::make_pair. Explicitly providing template arguments no longer works when the call arguments are lvalues.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130513 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 16:57:12 +00:00
Douglas Gregor
72d30f6950
Include <pthread.h> before we use pthread_self/pthread_kill
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130510 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 16:12:17 +00:00
Rafael Espindola
ac3ba1b27e
The last hack for producing bit identical output with cfi on OS X.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130504 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 15:09:53 +00:00
Rafael Espindola
7b11a4cbdc
Change DwarfCFIException's member variables to track what it actually
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emmits: .cfi_personality, .cfi_lsda and the moves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130503 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 14:48:51 +00:00
Andrew Trick
d49ffe8284
Teach Thumb2 isel to fold and->rotr ==> ROR.
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Generalization of Nate Begeman's patch!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130502 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 14:18:15 +00:00
Rafael Espindola
a432997745
Factor some code to needsCFIMoves. Avoid printing moves when we don't have to.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130501 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 14:14:06 +00:00
Benjamin Kramer
ce3a022b8c
This is done.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130499 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 14:09:57 +00:00
Benjamin Kramer
3224806109
Balance parentheses.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130489 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 08:41:23 +00:00
Benjamin Kramer
c2e31c1461
InstCombine: turn (C1 << A) << C2) into (C1 << C2) << A)
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Fixes PR9809.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130485 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29 08:15:41 +00:00