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24920 Commits

Author SHA1 Message Date
Chris Lattner d02dd3c388 Improve comments, patch provided by Vladimir Prus! 
llvm-svn: 28305
 2006-05-15 17:25:05 +00:00
Reid Spencer 0bc5119270 Doxygenify the comments, bringing the file level comments down to be attached 
with the class that it documents. Patch suggested by Vladimir Prus.

llvm-svn: 28304
 2006-05-15 16:12:01 +00:00
Chris Lattner 04a9e38369 Remove some dead code, identified by coverity. 
llvm-svn: 28303
 2006-05-15 05:48:32 +00:00
Owen Anderson e58e5082c8 Add myself to the credits. 
llvm-svn: 28302
 2006-05-15 05:13:07 +00:00
Rafael Espindola ffdc24b847 added a skeleton of the ARM backend 
llvm-svn: 28301
 2006-05-14 22:18:28 +00:00
Rafael Espindola b37e4105c2 added myself to CREDITS.TXT 
llvm-svn: 28300
 2006-05-14 20:29:25 +00:00
Chris Lattner ab81de7514 Free memory allocated by copy_env. 
llvm-svn: 28299
 2006-05-14 19:17:28 +00:00
Chris Lattner 2bd9d8eaca print a nice error if bugpoint gets an error reading inputs. Bug identified 
by coverity.

llvm-svn: 28298
 2006-05-14 19:15:56 +00:00
Chris Lattner 90abfe4bd9 Fix a bug found by inspection. 
llvm-svn: 28297
 2006-05-14 19:11:40 +00:00
Chris Lattner a782bbe827 improve comment. 
llvm-svn: 28296
 2006-05-14 19:10:22 +00:00
Chris Lattner 5eae951603 Catch a potentially thrown exception. 
llvm-svn: 28295
 2006-05-14 19:08:39 +00:00
Chris Lattner a8a550f1e3 Improve documentation on throwing, it is not complete still though. :( 
llvm-svn: 28294
 2006-05-14 19:07:07 +00:00
Chris Lattner 63539389ca LoadLibraryPermanently can theoretically throw an exception. Do not propagate 
it out of 'ExecutionEngine::create'.  This fixes a problem reported by coverity.

llvm-svn: 28293
 2006-05-14 19:01:55 +00:00
Chris Lattner 78b8e977b2 Bug noticed, by inspection. Filename can be null. 
llvm-svn: 28292
 2006-05-14 19:00:53 +00:00
Chris Lattner f64397ba1a This function is not documented as throwing an exception and callers don't 
handle it.  Just silently fail.

llvm-svn: 28291
 2006-05-14 18:53:09 +00:00
Chris Lattner 96749c4cec inverted logic, caught by coverity 
llvm-svn: 28290
 2006-05-14 18:46:52 +00:00
Chris Lattner 35515557c7 remove some dead code identified by coverity 
llvm-svn: 28289
 2006-05-14 18:45:44 +00:00
Chris Lattner 44f90c93e6 Delete memory allocated by CopyEnv 
llvm-svn: 28288
 2006-05-14 18:38:13 +00:00
Chris Lattner 47a6e63696 remove dead var 
llvm-svn: 28287
 2006-05-14 18:34:36 +00:00
Chris Lattner 3237da073e remove dead variables 
llvm-svn: 28286
 2006-05-14 18:33:57 +00:00
Chris Lattner 6b7a00869a Change token to match asmprinter output 
llvm-svn: 28285
 2006-05-14 18:23:06 +00:00
Evan Cheng 18d0438148 Backing out last check-in for now. It's causing an infinite loop gccas lencode. 
llvm-svn: 28284
 2006-05-14 06:46:03 +00:00
Chris Lattner 215280d8b9 Update comment. 
llvm-svn: 28283
 2006-05-14 02:05:19 +00:00
Chris Lattner f98ede25bb This is a proper fix for the compiler warning. A termination condition is 
not needed, as it can never be reached: an edge must exist.

llvm-svn: 28282
 2006-05-14 02:01:22 +00:00
Reid Spencer fc124ea453 Fix an infinite loop bug that Vladimir Prus identified. 
llvm-svn: 28281
 2006-05-13 18:11:32 +00:00
Reid Spencer c19fffd42d Add a #include <cassert> for situations where Casting.h is used standalone. 
Patch contributed by Vladimir Prus.

llvm-svn: 28280
 2006-05-13 17:50:38 +00:00
Evan Cheng 99f2f79e2f Fixing 2006-05-01-SchedCausingSpills.ll; some clean up 
llvm-svn: 28279
 2006-05-13 08:22:24 +00:00
Evan Cheng d1915cfa6f Revert an un-intended change 
llvm-svn: 28278
 2006-05-13 05:53:47 +00:00
Reid Spencer 11b002365f Don't try to reference uninitialized data. Make sure we can find "nm". 
llvm-svn: 28277
 2006-05-13 02:48:45 +00:00
Reid Spencer 70de606bb9 For PR741: 
Update documentation to reflect current LLVM reality:
  + LLVMAlpha.o, LLVMIA64.o
  - Skeleton, execve, ProfilePaths
Also, regenerate the library dependency information.

llvm-svn: 28276
 2006-05-13 02:22:01 +00:00
Chris Lattner 3987a8532d Add/Sub/Mul are safe to promote here as well. Incrementing a single-bit 
bitfield now gives this code:

_plus:
        lwz r2, 0(r3)
        rlwimi r2, r2, 0, 1, 31
        xoris r2, r2, 32768
        stw r2, 0(r3)
        blr

instead of this:

_plus:
        lwz r2, 0(r3)
        srwi r4, r2, 31
        slwi r4, r4, 31
        addis r4, r4, -32768
        rlwimi r2, r4, 0, 0, 0
        stw r2, 0(r3)
        blr

this can obviously still be improved.

llvm-svn: 28275
 2006-05-13 02:16:08 +00:00
Chris Lattner 69a0ce6261 Merge identical code. 
llvm-svn: 28274
 2006-05-13 02:11:14 +00:00
Chris Lattner 1ebbe6a22e Implement simple promotion for cast elimination in instcombine. This is 
currently very limited, but can be extended in the future.  For example,
we now compile:

uint %test30(uint %c1) {
        %c2 = cast uint %c1 to ubyte
        %c3 = xor ubyte %c2, 1
        %c4 = cast ubyte %c3 to uint
        ret uint %c4
}

to:

_xor:
        movzbl 4(%esp), %eax
        xorl $1, %eax
        ret

instead of:

_xor:
        movb $1, %al
        xorb 4(%esp), %al
        movzbl %al, %eax
        ret

More impressively, we now compile:

struct B { unsigned bit : 1; };
void xor(struct B *b) { b->bit = b->bit ^ 1; }

To (X86/PPC):

_xor:
        movl 4(%esp), %eax
        xorl $-2147483648, (%eax)
        ret
_xor:
        lwz r2, 0(r3)
        xoris r2, r2, 32768
        stw r2, 0(r3)
        blr

instead of (X86/PPC):

_xor:
        movl 4(%esp), %eax
        movl (%eax), %ecx
        movl %ecx, %edx
        shrl $31, %edx
        # TRUNCATE movb %dl, %dl
        xorb $1, %dl
        movzbl %dl, %edx
        andl $2147483647, %ecx
        shll $31, %edx
        orl %ecx, %edx
        movl %edx, (%eax)
        ret

_xor:
        lwz r2, 0(r3)
        srwi r4, r2, 31
        xori r4, r4, 1
        rlwimi r2, r4, 31, 0, 0
        stw r2, 0(r3)
        blr

This implements InstCombine/cast.ll:test30.

llvm-svn: 28273
 2006-05-13 02:06:03 +00:00
Chris Lattner 4edab0f7a7 New testcase for instcombine 
llvm-svn: 28272
 2006-05-13 02:00:07 +00:00
Chris Lattner cd60d38b30 Remove some dead variables. 
Fix a nasty bug in the memcmp optimizer where we used the wrong variable!

llvm-svn: 28269
 2006-05-12 23:35:26 +00:00
Chris Lattner 94acc47654 Remove dead stuff 
llvm-svn: 28268
 2006-05-12 23:32:01 +00:00
Chris Lattner 768bc20b74 Fix build breakage :( 
llvm-svn: 28267
 2006-05-12 23:26:11 +00:00
Chris Lattner b19ce6c810 More coverity fixes 
llvm-svn: 28266
 2006-05-12 21:14:20 +00:00
Chris Lattner 22f95b74ba Dead variable 
llvm-svn: 28265
 2006-05-12 21:12:22 +00:00
Chris Lattner ae48a894b1 Remove dead var, fix bad override. 
llvm-svn: 28264
 2006-05-12 21:09:57 +00:00
Reid Spencer c220ecfbb9 Don't use old-style casts. This prevents compiler warnings when CommandLine.h 
is used in projects that have stricter warning control than LLVM. This also
helps us find casts more easily if we ever need to.

llvm-svn: 28263
 2006-05-12 19:20:55 +00:00
Evan Cheng a726fc6dbf If the register allocator cannot find a register to spill, try the aliases. If 
that still fails (because all the register spill weights are inf), just grab
one.

llvm-svn: 28262
 2006-05-12 19:07:46 +00:00
Evan Cheng db30388d48 Remove dead code 
llvm-svn: 28261
 2006-05-12 19:03:56 +00:00
Chris Lattner 227d442d01 Fix accidentally committed patch. 
llvm-svn: 28260
 2006-05-12 18:20:39 +00:00
Chris Lattner d63ec521c5 Actually override the right method. :) 
Bug identified by coverity.

llvm-svn: 28259
 2006-05-12 18:19:25 +00:00
Chris Lattner 132322b96e remove dead variable. 
llvm-svn: 28258
 2006-05-12 18:17:25 +00:00
Chris Lattner 1971e8a77b Fix iterator invalidation bug, identified by Coverity. 
llvm-svn: 28257
 2006-05-12 18:13:11 +00:00
Chris Lattner 1fe2d2c600 Fix a hypothetical memory leak, identified by Coverity. In practice, this 
object is never deleted though.

llvm-svn: 28256
 2006-05-12 18:10:12 +00:00
Chris Lattner 53cdb2f2b0 Remove dead vars 
llvm-svn: 28255
 2006-05-12 18:06:45 +00:00
Chris Lattner da076e41ab remove dead vars 
llvm-svn: 28254
 2006-05-12 18:04:28 +00:00