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Commit Graph

27140 Commits

Author SHA1 Message Date
Chris Lattner
9b1878a28c Fix a bug where we incorrectly turned '(X & 0) == 0' into '(X & 0) >> -1',
which is undefined.  "0" isn't a power of 2.

llvm-svn: 30947
2006-10-13 22:46:18 +00:00
Chris Lattner
b90d66b7da implement branch inspection/modification methods.
llvm-svn: 30946
2006-10-13 21:21:17 +00:00
Evan Cheng
fe5bb5dbe6 Merge ISD::TRUNCSTORE to ISD::STORE. Switch to using StoreSDNode.
llvm-svn: 30945
2006-10-13 21:14:26 +00:00
Chris Lattner
b441d8e8ce it is easier to implement these when they are virtual
llvm-svn: 30944
2006-10-13 21:02:27 +00:00
Chris Lattner
520bf168f5 allow branch reversal to fail
llvm-svn: 30943
2006-10-13 20:59:31 +00:00
Bill Wendling
85f53a4427 Corrected formatting.
llvm-svn: 30942
2006-10-13 20:53:50 +00:00
Chris Lattner
87d16e0ed9 add the branch folding pass as a late cleanup pass for all targets. For now
it just deletes empty MBB's.  Soon it will do more :)

llvm-svn: 30941
2006-10-13 20:45:56 +00:00
Chris Lattner
f8eaaded24 replace the existing branch inspection/modification APIs with something more
useful and general.

llvm-svn: 30940
2006-10-13 20:44:01 +00:00
Chris Lattner
ae19ea4b2a disable some objectionable code, maybe we can bring this pass to life
llvm-svn: 30939
2006-10-13 20:43:10 +00:00
Chris Lattner
bea7a9de50 remove some dead code
llvm-svn: 30938
2006-10-13 20:40:42 +00:00
Chris Lattner
b22754853b add note
llvm-svn: 30937
2006-10-13 20:20:58 +00:00
Chris Lattner
14f18d4896 set isBarrier correctly
llvm-svn: 30936
2006-10-13 19:10:34 +00:00
Chris Lattner
a3f4e611a4 Correctly handle instruction separators.
llvm-svn: 30935
2006-10-13 17:56:02 +00:00
Chris Lattner
63ec35db20 Expose method and ivars for measuring inline asm length properly.
llvm-svn: 30934
2006-10-13 17:50:07 +00:00
Andrew Lenharth
254a2fbcd0 Move some warnings to debug mode.
llvm-svn: 30933
2006-10-13 17:38:22 +00:00
Rafael Espindola
1f85e7a2a1 add FNEGS and FNEGD
llvm-svn: 30932
2006-10-13 17:37:35 +00:00
Chris Lattner
5cd4ac0a79 Fix another dtor issue. The function local statics in this function were
being destroyed at inconvenient times.  Switch to using non-local ManagedStatic
objects, which actually also speeds up ConstRules::get.

llvm-svn: 30931
2006-10-13 17:22:21 +00:00
Rafael Espindola
042e61af25 add SBCS and SUBS
llvm-svn: 30930
2006-10-13 17:19:20 +00:00
Rafael Espindola
24d7976d1d implement calls to functions that return long
llvm-svn: 30929
2006-10-13 16:47:22 +00:00
Rafael Espindola
bd50a4d757 implement unordered floating point compares
llvm-svn: 30928
2006-10-13 13:14:59 +00:00
Jim Laskey
a053c74b99 Workaround for templates
llvm-svn: 30927
2006-10-13 13:02:19 +00:00
Jim Laskey
20feec042a Clean up dump.
llvm-svn: 30926
2006-10-13 13:01:34 +00:00
Chris Lattner
9476464f86 avoid a ctor/dtor issue with the ProgramName global.
llvm-svn: 30925
2006-10-13 00:06:24 +00:00
Chris Lattner
cf5bfb0e80 simplify trivial function
llvm-svn: 30924
2006-10-12 23:50:28 +00:00
Evan Cheng
c7283044d1 Really remove dead nodes from isel queue.
llvm-svn: 30923
2006-10-12 23:18:52 +00:00
Chris Lattner
f48558b3b6 shrink anon-ns and mark stuff static. No functionality changes
llvm-svn: 30922
2006-10-12 22:09:17 +00:00
Chris Lattner
9777da8fb7 add a note
llvm-svn: 30921
2006-10-12 22:01:26 +00:00
Chris Lattner
70444d5663 Lower X%C into X/C+stuff. This allows the 'division by a constant' logic to
apply to rems as well as divs.  This fixes PR945 and speeds up ReedSolomon
from 14.57s to 10.90s (which is now faster than gcc).

It compiles CodeGen/X86/rem.ll into:

_test1:
        subl $4, %esp
        movl %esi, (%esp)
        movl $2155905153, %ecx
        movl 8(%esp), %esi
        movl %esi, %eax
        imull %ecx
        addl %esi, %edx
        movl %edx, %eax
        shrl $31, %eax
        sarl $7, %edx
        addl %eax, %edx
        imull $255, %edx, %eax
        subl %eax, %esi
        movl %esi, %eax
        movl (%esp), %esi
        addl $4, %esp
        ret
_test2:
        movl 4(%esp), %eax
        movl %eax, %ecx
        sarl $31, %ecx
        shrl $24, %ecx
        addl %eax, %ecx
        andl $4294967040, %ecx
        subl %ecx, %eax
        ret
_test3:
        subl $4, %esp
        movl %esi, (%esp)
        movl $2155905153, %ecx
        movl 8(%esp), %esi
        movl %esi, %eax
        mull %ecx
        shrl $7, %edx
        imull $255, %edx, %eax
        subl %eax, %esi
        movl %esi, %eax
        movl (%esp), %esi
        addl $4, %esp
        ret

instead of div/idiv instructions.

llvm-svn: 30920
2006-10-12 20:58:32 +00:00
Chris Lattner
ae912d4d65 new testcase
llvm-svn: 30919
2006-10-12 20:56:15 +00:00
Evan Cheng
cd6e1ecd4f Add another cyclic dag test case.
llvm-svn: 30918
2006-10-12 20:38:45 +00:00
Evan Cheng
5ff49d9410 Use RemoveDeadNode to kill dead node.
llvm-svn: 30917
2006-10-12 20:35:19 +00:00
Evan Cheng
61afb767eb Add RemoveDeadNode to remove a dead node and its (potentially) dead operands.
llvm-svn: 30916
2006-10-12 20:34:05 +00:00
Chris Lattner
e38ce54cc9 add a minor dag combine noticed when looking at PR945
llvm-svn: 30915
2006-10-12 20:23:19 +00:00
Evan Cheng
76d365ac84 Doh. This wasn't causing problems by luck.
llvm-svn: 30914
2006-10-12 19:13:59 +00:00
Evan Cheng
d07e2f081a Some X86ISD::CMP were created with wrong ValueType's.
llvm-svn: 30913
2006-10-12 19:12:56 +00:00
Chris Lattner
08684eac36 Fix massive resource leaks in the bytecode reader. Reading a bytecode file
with ParseBytecodeFile used to leak both a ModuleProvider (and related
bytecode parser stuff attached to it) AND a file descriptor, which was
never closed.  This prevented gccld/llvm-ld/llvm-link from linking together
apps with more that ~252 .bc files on darwin.

llvm-svn: 30912
2006-10-12 18:32:30 +00:00
Chris Lattner
b7ff3d59f7 mark call adjustments as modifying the SP
llvm-svn: 30911
2006-10-12 18:00:26 +00:00
Chris Lattner
80790cad34 adjcallstack up/down clobbers the sp
llvm-svn: 30910
2006-10-12 18:00:14 +00:00
Chris Lattner
e7ea164744 adjcallstackup/down clobbers the stack pointer
llvm-svn: 30909
2006-10-12 17:57:58 +00:00
Chris Lattner
e4e8893807 mark adjcallstack up/down as clobbering and using the SP
llvm-svn: 30908
2006-10-12 17:56:34 +00:00
Chris Lattner
b25677f5ca Move the Imp tblgen class from the X86 backend to common code.
llvm-svn: 30907
2006-10-12 17:49:27 +00:00
Chris Lattner
4d707afe22 restore my previous patch, now that the X86 backend bug has been fixed:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20061009/038518.html

llvm-svn: 30906
2006-10-12 17:45:38 +00:00
Chris Lattner
a678c5bac1 Mark ADJCALLSTACKUP/DOWN as clobbering ESP so that virtregmap will notice
that it can't assume ESP is unmodified across the instrs.

llvm-svn: 30905
2006-10-12 17:42:56 +00:00
Jim Laskey
388c9681ef D'oh - need to use the rigth kind of store.
llvm-svn: 30903
2006-10-12 15:22:24 +00:00
Evan Cheng
68aef84a57 Backing out Chris' last commit. It's breaking llvm-gcc bootstrapping.
It's turning:
        movl -24(%ebp), %esp
        subl $16, %esp
        movl -24(%ebp), %ecx
into
        movl -24(%ebp), %esp
        subl $16, %esp
        movl %esp, (%esp)

llvm-svn: 30902
2006-10-12 08:00:47 +00:00
Chris Lattner
fde6859201 fix compilation failure of smg2000
llvm-svn: 30900
2006-10-12 03:55:48 +00:00
Chris Lattner
d781da5f26 If we see a load from a stack slot into a physreg, consider it as providing
the stack slot.  This fixes PR943.

llvm-svn: 30898
2006-10-12 02:34:07 +00:00
Evan Cheng
65264c811f Prior load folding check on chain operand was too strict. It requires the
chain operand to point to the load being folded. Now we relax this, traversing
up the chain, if it doesn't reach the load, then it's ok. We will create a
TokenFactor (of all the chain operands and the load's chain) to capture all
the control flow dependencies.

llvm-svn: 30897
2006-10-12 02:08:53 +00:00
Nick Lewycky
686cc9cacc Replace custom dispatch code with two uses of InstVisitor. Improves
compile-time performance.

llvm-svn: 30896
2006-10-12 02:02:44 +00:00
Evan Cheng
1ff54fff5c Update tests.
llvm-svn: 30895
2006-10-12 01:42:03 +00:00