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36269 Commits

Author SHA1 Message Date
Evan Cheng fead113fe0 Do not use the stack pointer directly, issue a copyfromreg instead. Otherwise we can end up with something like ADD32ri %esp, x which two-address pass won't like. 
llvm-svn: 45798
 2008-01-10 00:37:26 +00:00
Owen Anderson 8958a78576 Get rid of the isKillInst predicate. LiveVariables already provides this information. 
llvm-svn: 45797
 2008-01-10 00:33:11 +00:00
Chris Lattner ec79bba97f Fix PR1845 and rdar://5676945. Generic vectors smaller 
than hardware supported type will be scalarized, so we
can infer their alignment from that info.

We now codegen pr1845 into:

_boolVectorSelect:
	lbz r2, 0(r3)
	stb r2, -16(r1)
	blr 

llvm-svn: 45796
 2008-01-10 00:30:57 +00:00
Chris Lattner e34d7d0e24 new testcase for PR1845 
llvm-svn: 45795
 2008-01-10 00:30:38 +00:00
Evan Cheng 73d1017871 Remove comments that do not correspond to anything after recent refactoring. 
llvm-svn: 45792
 2008-01-10 00:09:10 +00:00
Owen Anderson 1c8152ba03 Copies need to be inserted before the first terminator, not at the end of the block. 
llvm-svn: 45791
 2008-01-10 00:01:41 +00:00
Evan Cheng 0e400d4cb7 Special copy SUnit's do not have SDNode's. 
llvm-svn: 45787
 2008-01-09 23:01:55 +00:00
Owen Anderson 436db42a3c Clean up StrongPHIElimination a bit, and add some more comments to the internal structures. There's 
still more work to do on this front.

llvm-svn: 45783
 2008-01-09 22:40:54 +00:00
Duncan Sands 48f22f0b80 Fix compile failures with g++-4.3. 
llvm-svn: 45781
 2008-01-09 19:42:09 +00:00
Chris Lattner 204e4a27b6 many cleanups and fixed, contributed by Sam Bishop 
llvm-svn: 45780
 2008-01-09 19:28:50 +00:00
Owen Anderson 4de0c3978d StrongPHIElim: Now with even fewer trivial bugs! 
llvm-svn: 45775
 2008-01-09 10:41:39 +00:00
Owen Anderson 77c3fe441b Fix an infinite recursion bug in InsertCopies. 
llvm-svn: 45774
 2008-01-09 10:32:30 +00:00
Owen Anderson e0fd9bd35a Fix some simple bugs. StrongPHIElimination now does not crash on 164.gzip. 
llvm-svn: 45773
 2008-01-09 06:19:05 +00:00
Evan Cheng a31824a08e Fix sse2.psrl.w and sse2.psrl.q definitions. 
llvm-svn: 45772
 2008-01-09 02:16:44 +00:00
Chris Lattner 7ff4a8bf3f Fix llvm-ld -Xlinker, patch by Daniel Teske! 
llvm-svn: 45770
 2008-01-09 01:01:17 +00:00
Chris Lattner 9129f51f9b add a testcase 
llvm-svn: 45768
 2008-01-09 00:37:18 +00:00
Chris Lattner 45e5032b1d add a note 
llvm-svn: 45766
 2008-01-09 00:17:57 +00:00
Chris Lattner 51b01bf8a5 Make load->store deletion a bit smarter. This allows us to compile this: 
void test(long long *P) { *P ^= 1; }

into just:

_test:
	movl	4(%esp), %eax
	xorl	$1, (%eax)
	ret

instead of code like this:

_test:
	movl	4(%esp), %ecx
        xorl    $1, (%ecx)
	movl	4(%ecx), %edx
	movl	%edx, 4(%ecx)
	ret

llvm-svn: 45762
 2008-01-08 23:08:06 +00:00
Owen Anderson 1b0d5c747e Rename registers that do not need copies. 
llvm-svn: 45759
 2008-01-08 21:54:52 +00:00
Duncan Sands 7b1460cca4 Crashes llc when using Chris's new legalization logic. 
llvm-svn: 45758
 2008-01-08 21:51:53 +00:00
Ted Kremenek a0a2881b1e Added "getRoot()" to ImmutableMap. 
Made the ctor for ImmutableMap to construct a map from an AVL tree public.

llvm-svn: 45756
 2008-01-08 21:05:59 +00:00
Ted Kremenek 9b0f70bb85 Fixed 80 col. violation. 
llvm-svn: 45752
 2008-01-08 19:38:55 +00:00
Chris Lattner 07fde9bde1 add a mayLoad property for machine instructions, a correlary to mayStore. 
This is currently not set by anything.

llvm-svn: 45748
 2008-01-08 18:05:21 +00:00
Duncan Sands bb956ca730 Use size_t to store Pos, avoid truncating value 
on 64-bit builds.  Analysis and original patch
by Török Edwin.  Code audit found another place
with the same problem, also fixed here.

llvm-svn: 45746
 2008-01-08 10:06:15 +00:00
Chris Lattner 2940c5c56d Implement PR1795, an instcombine hack for forming GEPs with integer pointer arithmetic. 
llvm-svn: 45745
 2008-01-08 07:23:51 +00:00
Chris Lattner ff71ec4dfb add match support for casts. 
llvm-svn: 45744
 2008-01-08 07:02:44 +00:00
Chris Lattner b17db3afa8 remove darwin/i386 t-t 
llvm-svn: 45743
 2008-01-08 06:52:51 +00:00
Chris Lattner 89f36e6b21 Finally implement correct ordered comparisons for PPC, even though 
the code generated is not wonderful.  This turns a miscompilation into
a code quality bug (noted in the ppc readme).  This fixes PR642, which
is over 2 years old (!).  Nate, please review this.

llvm-svn: 45742
 2008-01-08 06:46:30 +00:00
Chris Lattner 184f79a5e1 Testcase for PR1721 
llvm-svn: 45739
 2008-01-08 05:16:29 +00:00
Owen Anderson 812e1ea7cf Actually insert copies now! 
llvm-svn: 45738
 2008-01-08 05:16:15 +00:00
Chris Lattner 97879424fe Fix PR1797 
llvm-svn: 45736
 2008-01-08 04:26:20 +00:00
Evan Cheng 00300ddff1 Minor fix to enable x86-64 pic jit (still fails for other reasons). 
llvm-svn: 45734
 2008-01-08 02:07:10 +00:00
Evan Cheng 4951da49aa Fix a x86-64 static codegen bug. This fixes a lot of x86-64 jit failures. 
llvm-svn: 45733
 2008-01-08 02:06:11 +00:00
Bill Wendling 3b6fe5fa8d Silence warning about loss of precision. 
llvm-svn: 45731
 2008-01-08 00:52:29 +00:00
Evan Cheng 7250120177 Only mark instructions that load a single value without extension as isSimpleLoad = 1. 
llvm-svn: 45727
 2008-01-07 23:56:57 +00:00
Chris Lattner ba734518c1 add a new bit. 
llvm-svn: 45726
 2008-01-07 23:16:55 +00:00
Evan Cheng 8242168ef4 Unbreak x86-64. 
llvm-svn: 45725
 2008-01-07 23:08:23 +00:00
Chris Lattner ef81aa75f6 add a note that is important for some fp apps. 
llvm-svn: 45723
 2008-01-07 21:59:58 +00:00
Chris Lattner 730d088be1 possible switch lowering improvement. 
llvm-svn: 45720
 2008-01-07 21:38:14 +00:00
Owen Anderson 47299489ec Oops, missed one. 
llvm-svn: 45719
 2008-01-07 21:32:09 +00:00
Owen Anderson bbc6352d1f Make some predicates static. 
llvm-svn: 45718
 2008-01-07 21:30:40 +00:00
Duncan Sands c50c210d76 I doubt the address of the Error string was intended 
to be used for the force_interpreter parameter...
Spotted by gcc-4.2.

llvm-svn: 45714
 2008-01-07 19:14:42 +00:00
Duncan Sands d19a6f4836 Add missing newline at EOF. 
llvm-svn: 45712
 2008-01-07 19:13:36 +00:00
Nate Begeman 281653b25e Update the comment on scalar to vector to be a bit more clear. 
llvm-svn: 45707
 2008-01-07 17:52:24 +00:00
Nate Begeman d3d49df3f1 Update test to catch recent x86 insert regression and improvements 
llvm-svn: 45705
 2008-01-07 17:49:23 +00:00
Duncan Sands b18c30acec Small cleanup for handling of type/parameter attribute 
incompatibility.

llvm-svn: 45704
 2008-01-07 17:16:06 +00:00
Duncan Sands d8d4170f84 Unbreak x86-32 darwin long double! 
llvm-svn: 45703
 2008-01-07 16:36:38 +00:00
Duncan Sands 28bf7ac219 Fix long double support on x86-32 linux. 
llvm-svn: 45701
 2008-01-07 13:44:22 +00:00
Gordon Henriksen 24db8d383d Pruning includes. 
llvm-svn: 45700
 2008-01-07 13:30:38 +00:00
Bill Wendling a3bdad153f Operand 1 should be a register. We don't care if it's a preg, vreg, or 0. 
llvm-svn: 45699
 2008-01-07 08:05:29 +00:00
Chris Lattner d7857eafd0 add a note 
llvm-svn: 45698
 2008-01-07 07:46:23 +00:00
Chris Lattner f3efadcb5b remove #includage 
llvm-svn: 45697
 2008-01-07 07:42:25 +00:00
Chris Lattner 69fc766f63 split TargetInstrDesc out into its own header file. 
llvm-svn: 45696
 2008-01-07 07:33:08 +00:00
Chris Lattner 03ad885039 rename TargetInstrDescriptor -> TargetInstrDesc. 
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.

llvm-svn: 45695
 2008-01-07 07:27:27 +00:00
Chris Lattner 3ef160b15a remove a dead method. 
llvm-svn: 45694
 2008-01-07 06:47:10 +00:00
Chris Lattner fd2e338b85 simplify some code. 
llvm-svn: 45693
 2008-01-07 06:47:00 +00:00
Chris Lattner e99a6caee4 Rename all the M_* flags to be namespace qualified enums, and switch 
all clients over to using predicates instead of these flags directly.
These are now private values which are only to be used to statically
initialize the tables.

llvm-svn: 45692
 2008-01-07 06:42:05 +00:00
Chris Lattner d004f54155 use predicate. 
llvm-svn: 45691
 2008-01-07 06:37:29 +00:00
Chris Lattner 08a69ac2f5 add more and significantly better comments to the rest of the machineinstr 
flags that can be set.  Add predicates for the ones lacking it, and switch
some clients over to using the predicates instead of Flags directly.

llvm-svn: 45690
 2008-01-07 06:21:53 +00:00
Chris Lattner 769c86bf63 simplify some code using new predicates 
llvm-svn: 45689
 2008-01-07 05:40:58 +00:00
Chris Lattner c5c63ff9d7 add some mroe comments, add a isImplicitDef() method, add 
isConditionalBranch() and isUnconditionalBranch() methods.

llvm-svn: 45688
 2008-01-07 05:38:38 +00:00
Chris Lattner f376c99ea0 rename hasVariableOperands() -> isVariadic(). Add some comments. 
Evan, please review the comments I added to getNumDefs to make sure
that they are accurate, thx.

llvm-svn: 45687
 2008-01-07 05:19:29 +00:00
Chris Lattner fd548c96cc Move M_* flags down in the file. Move SchedClass up in the 
TargetInstrDescriptor class and shrink to 16-bits, saving a 
word in TargetInstrDescriptor.  Add some comments.

llvm-svn: 45686
 2008-01-07 05:06:49 +00:00
Chris Lattner 8c69898157 remove a dead field. 
llvm-svn: 45685
 2008-01-07 04:57:42 +00:00
Chris Lattner 6f8713decb the name field of instructions is never set to a non-empty string, 
just unconditionally use the def name of the instruction.

llvm-svn: 45684
 2008-01-07 04:57:31 +00:00
Chris Lattner 6077962101 no need to explicitly clear these fields. 
llvm-svn: 45683
 2008-01-07 04:55:09 +00:00
Gordon Henriksen c75405bdb3 Removing a leaked file. 
llvm-svn: 45681
 2008-01-07 03:23:52 +00:00
Chris Lattner b0d06b4381 Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor 
llvm-svn: 45680
 2008-01-07 03:13:06 +00:00
Chris Lattner f0f438a517 remove MachineOpCode typedef. 
llvm-svn: 45679
 2008-01-07 02:48:55 +00:00
Chris Lattner d34c47653e remove some uses of MachineOpCode, move getSchedClass 
into TargetInstrDescriptor from TargetInstrInfo.

llvm-svn: 45678
 2008-01-07 02:46:03 +00:00
Chris Lattner e55e115616 Add predicates methods to TargetOperandInfo, and switch all clients 
over to using them, instead of diddling Flags directly.  Change the
various flags from const variables to enums.

llvm-svn: 45677
 2008-01-07 02:39:19 +00:00
Gordon Henriksen c7e991b7c3 Setting GlobalDirective in TargetAsmInfo by default rather than 
providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.

llvm-svn: 45676
 2008-01-07 02:31:11 +00:00
Gordon Henriksen efb08802ec Deleting an empty file. Thanks, /usr/bin/patch! 
llvm-svn: 45675
 2008-01-07 02:29:04 +00:00
Chris Lattner a98c679de0 Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects 
that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.

llvm-svn: 45674
 2008-01-07 01:56:04 +00:00
Owen Anderson 0ec92e9d64 Update CodeGen for MRegisterInfo --> TargetInstrInfo changes. 
llvm-svn: 45673
 2008-01-07 01:35:56 +00:00
Owen Anderson 2a3be7bb6c Move even more functionality from MRegisterInfo into TargetInstrInfo. 
Some day I'll get it all moved over...

llvm-svn: 45672
 2008-01-07 01:35:02 +00:00
Gordon Henriksen 2d684b1fbf Ammending r45669 with a missing file. 
llvm-svn: 45671
 2008-01-07 01:33:09 +00:00
Gordon Henriksen 6047b6e140 With this patch, the LowerGC transformation becomes the 
ShadowStackCollector, which additionally has reduced overhead with
no sacrifice in portability.

Considering a function @fun with 8 loop-local roots,
ShadowStackCollector introduces the following overhead
(x86):

; shadowstack prologue
        movl    L_llvm_gc_root_chain$non_lazy_ptr, %eax
        movl    (%eax), %ecx
        movl    $___gc_fun, 20(%esp)
        movl    $0, 24(%esp)
        movl    $0, 28(%esp)
        movl    $0, 32(%esp)
        movl    $0, 36(%esp)
        movl    $0, 40(%esp)
        movl    $0, 44(%esp)
        movl    $0, 48(%esp)
        movl    $0, 52(%esp)
        movl    %ecx, 16(%esp)
        leal    16(%esp), %ecx
        movl    %ecx, (%eax)

; shadowstack loop overhead
        (none)

; shadowstack epilogue
        movl    48(%esp), %edx
        movl    %edx, (%ecx)

; shadowstack metadata
        .align  3
___gc_fun:                              # __gc_fun
        .long   8
        .space  4

In comparison to LowerGC:

; lowergc prologue
        movl    L_llvm_gc_root_chain$non_lazy_ptr, %eax
        movl    (%eax), %ecx
        movl    %ecx, 48(%esp)
        movl    $8, 52(%esp)
        movl    $0, 60(%esp)
        movl    $0, 56(%esp)
        movl    $0, 68(%esp)
        movl    $0, 64(%esp)
        movl    $0, 76(%esp)
        movl    $0, 72(%esp)
        movl    $0, 84(%esp)
        movl    $0, 80(%esp)
        movl    $0, 92(%esp)
        movl    $0, 88(%esp)
        movl    $0, 100(%esp)
        movl    $0, 96(%esp)
        movl    $0, 108(%esp)
        movl    $0, 104(%esp)
        movl    $0, 116(%esp)
        movl    $0, 112(%esp)

; lowergc loop overhead
        leal    44(%esp), %eax
        movl    %eax, 56(%esp)
        leal    40(%esp), %eax
        movl    %eax, 64(%esp)
        leal    36(%esp), %eax
        movl    %eax, 72(%esp)
        leal    32(%esp), %eax
        movl    %eax, 80(%esp)
        leal    28(%esp), %eax
        movl    %eax, 88(%esp)
        leal    24(%esp), %eax
        movl    %eax, 96(%esp)
        leal    20(%esp), %eax
        movl    %eax, 104(%esp)
        leal    16(%esp), %eax
        movl    %eax, 112(%esp)

; lowergc epilogue
        movl    48(%esp), %edx
        movl    %edx, (%ecx)

; lowergc metadata
        (none)

llvm-svn: 45670
 2008-01-07 01:30:53 +00:00
Gordon Henriksen 5180e85675 Enabling the target-independent garbage collection infrastructure by hooking it 
up to the various compiler pipelines.

This doesn't actually add support for any GC algorithms, which means it 
temporarily breaks a few tests. To be fixed shortly.

llvm-svn: 45669
 2008-01-07 01:30:38 +00:00
Chris Lattner b296b0f1c1 The pic base can't be duplicated. 
llvm-svn: 45668
 2008-01-06 23:49:32 +00:00
Chris Lattner a4ce4f6987 rename isLoad -> isSimpleLoad due to evan's desire to have such a predicate. 
llvm-svn: 45667
 2008-01-06 23:38:27 +00:00
Gordon Henriksen db911e9037 Modify Makefile.rules to allow makefiles to prepend to C.Flags and 
fiends. Change Makefile.ocaml to not touch CFLAGS.

llvm-svn: 45663
 2008-01-06 21:54:35 +00:00
Chris Lattner 2a1993fb2c improve description of alignment, patch by Alain Frisch. 
llvm-svn: 45662
 2008-01-06 21:04:43 +00:00
Chris Lattner ec56402557 Fix typo noticed by 'Danny' in PR1901 
llvm-svn: 45661
 2008-01-06 19:51:52 +00:00
Chris Lattner 466e8ebcc7 back out accidental commit. 
llvm-svn: 45660
 2008-01-06 19:19:32 +00:00
Chris Lattner 460d863ba5 fix an accidental commit that broke all the testers :( 
llvm-svn: 45659
 2008-01-06 19:18:52 +00:00
Duncan Sands 404eb05247 The transform that tries to turn calls to bitcast functions into 
direct calls bails out unless caller and callee have essentially
equivalent parameter attributes.  This is illogical - the callee's
attributes should be of no relevance here.  Rework the logic, which
incidentally fixes a crash when removed arguments have attributes.

llvm-svn: 45658
 2008-01-06 18:27:01 +00:00
Duncan Sands 55e5090fe8 When transforming a call to a bitcast function into 
a direct call with cast parameters and cast return
value (if any), instcombine was prepared to cast any
non-void return value into any other, whether castable
or not.  Add a new predicate for testing whether casting
is valid, and check it both for the return value and
(as a cleanup) for the parameters.

llvm-svn: 45657
 2008-01-06 10:12:28 +00:00
Chris Lattner 10324d0175 rename isStore -> mayStore to more accurately reflect what it captures. 
llvm-svn: 45656
 2008-01-06 08:36:04 +00:00
Duncan Sands 1694a53c5d Remove an unused variable. 
llvm-svn: 45655
 2008-01-06 07:43:13 +00:00
Chris Lattner a348f55ec6 Change the 'isStore' inferrer to look for 'SDNPMayStore' 
instead of "ISD::STORE".  This allows us to mark target-specific dag
nodes as storing (such as ppc byteswap stores).  This allows us to remove
more explicit isStore flags from the .td files.

Finally, add a warning for when a .td file contains an explicit 
isStore and tblgen is able to infer it.

llvm-svn: 45654
 2008-01-06 06:44:58 +00:00
Chris Lattner f4d55ec4e8 remove explicit isStore flags that are now inferrable. 
llvm-svn: 45653
 2008-01-06 05:55:01 +00:00
Chris Lattner e20f380fbf remove some isStore flags that are now inferred automatically. 
llvm-svn: 45652
 2008-01-06 05:53:26 +00:00
Chris Lattner e9dba0920b describe isStore and simplify the implementation of hasUnmodelledSideEffects. 
No functionality change. 

llvm-svn: 45651
 2008-01-06 05:43:21 +00:00
Chris Lattner 89c6566577 set the 'isstore' flag for instructions whose pattern is an 
intrinsic that writes to memory.

llvm-svn: 45650
 2008-01-06 05:36:50 +00:00
Nick Lewycky 0e519bb555 Accept both %y, %x and %x, %y as valid answers. 
llvm-svn: 45649
 2008-01-06 03:12:44 +00:00
Chris Lattner e457fd1e9b remove some old hacky code that tried to infer whether a store 
occured in a pattern, but failed miserably.  The new code works for
any instruction that has a store in its pattern, including all the 
x86 mem op mem instructions.

The only target-independent code that uses this is branch folding,
so this won't change anything in practice.

llvm-svn: 45648
 2008-01-06 02:16:26 +00:00
Chris Lattner 27a4c1515a rearrange some code to allow inferring instr info from the pattern of the instr, but don't do so yet. 
llvm-svn: 45647
 2008-01-06 01:53:37 +00:00
Chris Lattner d5326def4a improve const correctness. 
llvm-svn: 45646
 2008-01-06 01:52:22 +00:00
Chris Lattner ea2d52d867 Split the impl of CodeGenInstruction out to its own .cpp file, add a getName() accessor. 
llvm-svn: 45645
 2008-01-06 01:35:39 +00:00