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c41cd9c391
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Author SHA1 Message Date
Evan Cheng
c41cd9c391 Added a new SDNode type: BR_JT for jumptable branch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31292 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 07:59:36 +00:00
Chris Lattner
55d7244f69 fix this regtest 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31291 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 05:24:03 +00:00
Chris Lattner
09b6ac92d8 add a new form of insert. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31290 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 05:07:51 +00:00
Chris Lattner
dd94c8d6b2 Add SmallString a (currently) minimal class that adapts SmallVector to be 
more string-like.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31289 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 03:39:20 +00:00
Chris Lattner
6c1645ce7d add a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31288 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 03:14:15 +00:00
Chris Lattner
463c4a1ae9 add newline at end of file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31287 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 23:47:01 +00:00
Chris Lattner
23d7b36117 add a highly efficient hash table that is specialized for mapping C strings 
to some other type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31286 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 23:42:03 +00:00
Chris Lattner
9f617d64c5 Add a new llvm::Allocator abstraction, which will be used by a container 
I'm about to add.  This is similar to, but necessarily different than, the
STL allocator class.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31285 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 22:08:03 +00:00
Chris Lattner
120bc21576 Fix SimplifyCFG/2006-10-29-InvokeCrash.ll, a crash compiling QT. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31284 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 21:21:20 +00:00
Chris Lattner
7c94454c56 new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31283 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 21:20:56 +00:00
Chris Lattner
6b0e3f8907 Make CanFallThrough more intelligent (so it can handle blocks with (e.g.) no 
successors), and make island block movement more general.

This compiles CodeGen/X86/2006-04-27-ISelFoldingBug.ll to:

_loadAndRLEsource_no_exit_2E_1_label_2E_0:
        subl $8, %esp
        movl %esi, 4(%esp)
        movl %ebx, (%esp)
        movl 16(%esp), %eax
        movl 12(%esp), %ecx
LBB1_3: #label.0
        movl _last, %edx
        movl %edx, %esi
        incl %esi
        movl %esi, _last
        movl %ecx, %ebx
        # TRUNCATE movb %bl, %bl
        movl _block, %esi
        movb %bl, 1(%esi,%edx)
        cmpl %eax, _last
        jge LBB1_2      #codeRepl5.exitStub
LBB1_4: #label.0
        cmpl $257, %ecx
        je LBB1_2       #codeRepl5.exitStub
LBB1_1: #label.0.no_exit.1_crit_edge.exitStub
        movl $1, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret
LBB1_2: #codeRepl5.exitStub
        xorl %eax, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret

instead of:

_loadAndRLEsource_no_exit_2E_1_label_2E_0:
        subl $8, %esp
        movl %esi, 4(%esp)
        movl %ebx, (%esp)
        movl 16(%esp), %eax
        movl 12(%esp), %ecx
        jmp LBB1_3      #label.0
LBB1_1: #label.0.no_exit.1_crit_edge.exitStub
        movl $1, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret
LBB1_2: #codeRepl5.exitStub
        xorl %eax, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret
LBB1_3: #label.0
        movl _last, %edx
        movl %edx, %esi
        incl %esi
        movl %esi, _last
        movl %ecx, %ebx
        # TRUNCATE movb %bl, %bl
        movl _block, %esi
        movb %bl, 1(%esi,%edx)
        cmpl %eax, _last
        jge LBB1_2      #codeRepl5.exitStub
LBB1_4: #label.0
        cmpl $257, %ecx
        jne LBB1_1      #label.0.no_exit.1_crit_edge.exitStub
        jmp LBB1_2      #codeRepl5.exitStub

... which is much better layout :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31282 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 21:05:41 +00:00
Chris Lattner
6a586c8d9a fix Generic/2006-10-29-Crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31281 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 21:01:20 +00:00
Chris Lattner
1bc33f7c81 new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31280 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 21:00:55 +00:00
Chris Lattner
5a145f0094 Fix a load folding issue that Evan noticed: there is no need to export values 
used by comparisons in the main block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31279 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 18:23:37 +00:00
Jim Laskey
a97c67c866 Try again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31278 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 09:19:59 +00:00
Jim Laskey
d8cb446aa2 Not handling zero length strings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31277 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 08:27:07 +00:00
Evan Cheng
ba726ab3ec VLOAD is not the LoadSDNode opcode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31276 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 06:14:47 +00:00
Nick Lewycky
f6aaaaa39e Remove spurious case. EXTLOAD is not one of the node opcodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31275 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 02:26:30 +00:00
Chris Lattner
bad7f48c70 split critical edges more carefully and intelligently. In particular, critical 
edges whose destinations are not phi nodes don't bother us.  Also, share
split edges, since the split edge can't have a phi.  This significantly
reduces the complexity of generated code in some cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31274 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 19:22:10 +00:00
Chris Lattner
6acfe12dd6 Teach branch folding to fold identical jump tables together and to delete 
jump tables that are dead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31273 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:34:47 +00:00
Chris Lattner
c4aacac056 add an assertion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31272 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:21:51 +00:00
Chris Lattner
5f8d61bbd8 remove dead method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31271 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:21:29 +00:00
Chris Lattner
4976dfb4b9 add a method for hacking on JTIdx's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31270 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:18:36 +00:00
Chris Lattner
a4eb44a285 const'ify jump table stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31269 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:17:09 +00:00
Chris Lattner
95e4786a76 add a method for deleting dead jump tables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31268 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:12:00 +00:00
Chris Lattner
e7251a0377 add an assert 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31267 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:11:20 +00:00
Chris Lattner
0737188220 don't print dead jump tables 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31266 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:10:06 +00:00
Chris Lattner
5bd0c00b80 determine whether a change was made 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31265 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:00:05 +00:00
Chris Lattner
ef13982aa7 implement the BlockHasNoFallThrough hook 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31264 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 17:35:02 +00:00
Chris Lattner
cf420cca57 improve deletion of blocks that just contain branches by knowing that 
the pred block doesn't fall through into them if it's a jumptable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31263 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 17:32:47 +00:00
Chris Lattner
c24ff8ed12 add another target hook for branch folding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31262 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 17:29:57 +00:00
Jim Laskey
1c6f01aaa5 Load and stores have not been uniqued properly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31261 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 17:25:28 +00:00
Chris Lattner
47e32e6b83 Split *all* critical edges before isel. This resolves issues with spill code 
being inserted on unsplit critical edges, which introduces (sometimes large
amounts of) partially dead spill code.

This also fixes PR925 + CodeGen/Generic/switch-crit-edge-constant.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31260 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 17:04:37 +00:00
Chris Lattner
49bb78ce9f new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31259 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 17:04:16 +00:00
Chris Lattner
b57de3328d add option to isCriticalEdge 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31258 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 06:58:17 +00:00
Chris Lattner
0997fadc37 break edges more intelligently 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31257 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 06:45:33 +00:00
Chris Lattner
27e1f90d85 Expose a smarter way to break critical edges. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31256 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 06:44:56 +00:00
Chris Lattner
f6de8ad1a2 SplitCriticalEdge checks to see if an edge is critical, don't check twice 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31255 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 06:38:14 +00:00
Chris Lattner
6fb6ef4d65 Fix a serious bug that caused any x86 vector stuff to infinite loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31254 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 06:15:26 +00:00
Evan Cheng
31b6ddad31 Doh. Must check if GV is constant first before putting it in .cstring. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31253 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 05:56:51 +00:00
Evan Cheng
71aae62445 Doh. Must check if GV is constant first. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31252 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 05:56:06 +00:00
Nick Lewycky
7a2ed81f08 Emitting raw bytecode is awfully rude. Add -disable-output. 
Clarify the test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31251 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 02:34:41 +00:00
Jim Laskey
1fb8e15424 Editorial clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31250 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 01:34:21 +00:00
Chris Lattner
7466ebf045 add a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31249 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 01:24:05 +00:00
Chris Lattner
1b9c8e73b5 prepare for a change I'm about to make 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31248 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 00:59:20 +00:00
Chris Lattner
ae2650a9cf don't dist internal readme 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31247 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 00:51:15 +00:00
Chris Lattner
985384c41d don't dist internal readme's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31246 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 00:49:54 +00:00
Chris Lattner
064fdccf98 don't distribute internal readme's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31245 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 00:48:27 +00:00
Reid Spencer
b9112019de Make sure all the readme files get distributed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31244 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 00:11:39 +00:00
Jim Laskey
def69b92e7 Clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31243 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-27 23:52:51 +00:00