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Author SHA1 Message Date
Chris Lattner
703a8cf960 remove dead var 
llvm-svn: 28287
 2006-05-14 18:34:36 +00:00
Chris Lattner
4ad747c469 remove dead variables 
llvm-svn: 28286
 2006-05-14 18:33:57 +00:00
Chris Lattner
fa70e32490 Change token to match asmprinter output 
llvm-svn: 28285
 2006-05-14 18:23:06 +00:00
Evan Cheng
111642322d 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
3fe38bf77b Update comment. 
llvm-svn: 28283
 2006-05-14 02:05:19 +00:00
Chris Lattner
2070effca0 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
e343483440 Fix an infinite loop bug that Vladimir Prus identified. 
llvm-svn: 28281
 2006-05-13 18:11:32 +00:00
Reid Spencer
0be60af352 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
489f9bd68f Fixing 2006-05-01-SchedCausingSpills.ll; some clean up 
llvm-svn: 28279
 2006-05-13 08:22:24 +00:00
Evan Cheng
7bb257e178 Revert an un-intended change 
llvm-svn: 28278
 2006-05-13 05:53:47 +00:00
Reid Spencer
fa5fca78ee 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
9277db58e9 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
c927dced9e 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
c439f96b2c Merge identical code. 
llvm-svn: 28274
 2006-05-13 02:11:14 +00:00
Chris Lattner
eea864472d 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
5f2a11f1bf New testcase for instcombine 
llvm-svn: 28272
 2006-05-13 02:00:07 +00:00
Chris Lattner
4bbc1d8e95 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
08efc01479 Remove dead stuff 
llvm-svn: 28268
 2006-05-12 23:32:01 +00:00
Chris Lattner
50371a3046 Fix build breakage :( 
llvm-svn: 28267
 2006-05-12 23:26:11 +00:00
Chris Lattner
dbbbabb17b More coverity fixes 
llvm-svn: 28266
 2006-05-12 21:14:20 +00:00
Chris Lattner
db8caed257 Dead variable 
llvm-svn: 28265
 2006-05-12 21:12:22 +00:00
Chris Lattner
adcb0582d8 Remove dead var, fix bad override. 
llvm-svn: 28264
 2006-05-12 21:09:57 +00:00
Reid Spencer
1a7e67d221 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
772647518f 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
871a83d4d0 Remove dead code 
llvm-svn: 28261
 2006-05-12 19:03:56 +00:00
Chris Lattner
e020b812f3 Fix accidentally committed patch. 
llvm-svn: 28260
 2006-05-12 18:20:39 +00:00
Chris Lattner
04a8ddfd68 Actually override the right method. :) 
Bug identified by coverity.

llvm-svn: 28259
 2006-05-12 18:19:25 +00:00
Chris Lattner
f741502e85 remove dead variable. 
llvm-svn: 28258
 2006-05-12 18:17:25 +00:00
Chris Lattner
acd1bbfff7 Fix iterator invalidation bug, identified by Coverity. 
llvm-svn: 28257
 2006-05-12 18:13:11 +00:00
Chris Lattner
b1ad13a4bc 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
9e29384a4b Remove dead vars 
llvm-svn: 28255
 2006-05-12 18:06:45 +00:00
Chris Lattner
9a24639afc remove dead vars 
llvm-svn: 28254
 2006-05-12 18:04:28 +00:00
Chris Lattner
11064741d3 Remove dead variable 
llvm-svn: 28253
 2006-05-12 18:02:04 +00:00
Chris Lattner
474e1b7ef3 Comment out dead variables 
llvm-svn: 28252
 2006-05-12 17:57:54 +00:00
Reid Spencer
ea509eb3ac When reading the symbol table, make sure to delete the ArchiveMember 
created by reading the symbol table.

llvm-svn: 28251
 2006-05-12 17:56:20 +00:00
Chris Lattner
90527550c1 Remove dead var 
llvm-svn: 28250
 2006-05-12 17:50:35 +00:00
Chris Lattner
9930cf948e Remove dead variable 
llvm-svn: 28249
 2006-05-12 17:41:45 +00:00
Chris Lattner
9789688d36 remove dead variable. 
llvm-svn: 28248
 2006-05-12 17:33:59 +00:00
Chris Lattner
2c316c91e8 Remove dead variable. 
llvm-svn: 28247
 2006-05-12 17:31:21 +00:00
Chris Lattner
34893c34e5 Avoid defining dead result 
llvm-svn: 28246
 2006-05-12 17:29:40 +00:00
Chris Lattner
60dfdded64 Remove dead return value. 
llvm-svn: 28245
 2006-05-12 17:28:36 +00:00
Chris Lattner
db5b91f6a8 Compile: 
%tmp152 = setgt uint %tmp144, %tmp149           ; <bool> [#uses=1]
        %tmp159 = setlt uint %tmp144, %tmp149           ; <bool> [#uses=1]
        %bothcond2 = or bool %tmp152, %tmp159           ; <bool> [#uses=1]

To setne, not setune, which causes an assertion fault.

llvm-svn: 28244
 2006-05-12 17:03:46 +00:00
Chris Lattner
bcd2c4f32d Fix PowerPC/2006-05-12-rlwimi-crash.ll 
Nate, please verify that if InsertMask is 0, rlwimi shouldn't be used.
This fixes the crash and causes no PPC testsuite regressions.

llvm-svn: 28243
 2006-05-12 16:29:37 +00:00
Chris Lattner
436447489d new testcase for a recent rlwimi crash. 
llvm-svn: 28242
 2006-05-12 16:28:13 +00:00
Evan Cheng
409dd126bf Noop instruction 
llvm-svn: 28241
 2006-05-12 07:47:00 +00:00
Evan Cheng
3d1e1ffd9b Unused instruction 
llvm-svn: 28240
 2006-05-12 07:42:01 +00:00
Owen Anderson
1245bd420e Add a method to generate a string representation from a TargetData. 
This continues the work on PR 761.

llvm-svn: 28239
 2006-05-12 07:01:44 +00:00
Owen Anderson
29e4d70aed Refactor a bunch of includes so that TargetMachine.h doesn't have to include 
TargetData.h.  This should make recompiles a bit faster with my current
TargetData tinkering.

llvm-svn: 28238
 2006-05-12 06:33:49 +00:00
Owen Anderson
a0a9e4584a Fix some tabbing issues. 
llvm-svn: 28237
 2006-05-12 06:06:55 +00:00
Evan Cheng
f3d7bb7a9e Backing out fix for PR770. Need to re-apply it after live range splitting is possible 
llvm-svn: 28236
 2006-05-12 06:06:34 +00:00