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15645 Commits

Author SHA1 Message Date
Chris Lattner f6a6966cd2 handle "st" as "st(0)" 
llvm-svn: 31320
 2006-10-31 19:42:44 +00:00
Chris Lattner 6f043b90ea TargetLowering::isOperandValidForConstraint 
llvm-svn: 31319
 2006-10-31 19:41:18 +00:00
Chris Lattner 8c6949e5b2 Change the prototype for TargetLowering::isOperandValidForConstraint 
llvm-svn: 31318
 2006-10-31 19:40:43 +00:00
Chris Lattner 984d6e1669 generalize the fix for PR977 to also fix 
Transforms/LCSSA/2006-10-31-UnreachableBlock-2.ll

llvm-svn: 31317
 2006-10-31 18:56:48 +00:00
Chris Lattner eb68f080ef Fix PR977 and Transforms/LCSSA/2006-10-31-UnreachableBlock.ll 
llvm-svn: 31315
 2006-10-31 17:52:18 +00:00
Andrew Lenharth 692e4155aa Add all that branch mangling niftiness 
llvm-svn: 31313
 2006-10-31 16:49:55 +00:00
Rafael Espindola 4e825336a0 add support for calling functions when the caller has variable sized objects 
llvm-svn: 31312
 2006-10-31 13:03:26 +00:00
Anton Korobeynikov aa4c0f9374 1. Clean up code due to changes in SwitchTo*Section(2) 
2. Added partial debug support for mingw\cygwin targets (the same as
   Linux\ELF). Please note, that currently mingw\cygwin uses 'stabs' format
   for storing debug info by default, thus many (runtime) libraries has
   this information included. These formats shouldn't be mixed in one binary
   ('stabs' & 'DWARF'), otherwise binutils tools will be confused.

llvm-svn: 31311
 2006-10-31 08:31:24 +00:00
Chris Lattner 968f803928 Turn an assert into an error message. This is commonly triggered when 
we don't support a specific constraint yet.  When this happens, print the
unsupported constraint.

llvm-svn: 31310
 2006-10-31 07:33:13 +00:00
Anton Korobeynikov 49993529eb Unbreaking static ctors patch. 
Defaulting second arguments of SwitchTo*Section, this should make things
somehow clearer.

llvm-svn: 31306
 2006-10-31 06:11:06 +00:00
Evan Cheng e6d584765f Fix a typo which can break jumptables. 
llvm-svn: 31305
 2006-10-31 02:31:00 +00:00
Reid Spencer 2545fe6d93 Make this compile again. 
llvm-svn: 31304
 2006-10-31 01:45:56 +00:00
Evan Cheng de5ecd6bc1 Apply Aton's LLVM patch for PR973: Linux ctors / dtors support. 
llvm-svn: 31303
 2006-10-31 01:26:55 +00:00
Reid Spencer 7eda51d4cf Fix a problem introduced by a last-minute change (logic negation). 
llvm-svn: 31302
 2006-10-30 23:34:32 +00:00
Chris Lattner 3e36e07db2 fix miscompilation of llvm.isunordered, where we branched on the opposite 
condition.  This fixes miscompilation of Olden/bh and many others.

llvm-svn: 31301
 2006-10-30 23:02:25 +00:00
Reid Spencer b51b5c0b1f Add debug support for X86/ELF targets (Linux). This allows llvm-gcc4 
generated object modules to be debugged with gdb. Hopefully this helps
pre-release debugging.

llvm-svn: 31299
 2006-10-30 22:32:30 +00:00
Chris Lattner 7443600ef8 fix wonky indentation 
llvm-svn: 31298
 2006-10-30 22:27:23 +00:00
Devang Patel bf0a5c2d56 Update comment. Valid option is -debug-pass=Structures. 
llvm-svn: 31297
 2006-10-30 19:25:54 +00:00
Jim Laskey ad2f5b7d18 Switch abbreviations to use the folding set.a. 
llvm-svn: 31296
 2006-10-30 15:59:54 +00:00
Jim Laskey 43c19124bb Simplify DwarfWriter header. 
llvm-svn: 31295
 2006-10-30 13:35:07 +00:00
Evan Cheng 0d41d19427 All targets expand BR_JT for now. 
llvm-svn: 31294
 2006-10-30 08:02:39 +00:00
Evan Cheng 84a28d4e76 Lower jumptable to BR_JT. The legalizer can lower it to a BRIND or let the target custom lower it. 
llvm-svn: 31293
 2006-10-30 08:00:44 +00:00
Evan Cheng c3e695137d Added a new SDNode type: BR_JT for jumptable branch. 
llvm-svn: 31292
 2006-10-30 07:59:36 +00:00
Chris Lattner 149e666baf add a highly efficient hash table that is specialized for mapping C strings 
to some other type.

llvm-svn: 31286
 2006-10-29 23:42:03 +00:00
Chris Lattner b9de90377f 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.

llvm-svn: 31285
 2006-10-29 22:08:03 +00:00
Chris Lattner fc519cd2d1 Fix SimplifyCFG/2006-10-29-InvokeCrash.ll, a crash compiling QT. 
llvm-svn: 31284
 2006-10-29 21:21:20 +00:00
Chris Lattner 504eeda365 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 :)

llvm-svn: 31282
 2006-10-29 21:05:41 +00:00
Chris Lattner e60ae823e8 fix Generic/2006-10-29-Crash.ll 
llvm-svn: 31281
 2006-10-29 21:01:20 +00:00
Chris Lattner f31b9ef458 Fix a load folding issue that Evan noticed: there is no need to export values 
used by comparisons in the main block.

llvm-svn: 31279
 2006-10-29 18:23:37 +00:00
Jim Laskey 179ebd3fc3 Try again. 
llvm-svn: 31278
 2006-10-29 09:19:59 +00:00
Jim Laskey 8f05a611e9 Not handling zero length strings. 
llvm-svn: 31277
 2006-10-29 08:27:07 +00:00
Evan Cheng 7ab6123c42 VLOAD is not the LoadSDNode opcode. 
llvm-svn: 31276
 2006-10-29 06:14:47 +00:00
Nick Lewycky dc146a9fb9 Remove spurious case. EXTLOAD is not one of the node opcodes. 
llvm-svn: 31275
 2006-10-29 02:26:30 +00:00
Chris Lattner bba52191fa 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.

llvm-svn: 31274
 2006-10-28 19:22:10 +00:00
Chris Lattner c07657f59b Teach branch folding to fold identical jump tables together and to delete 
jump tables that are dead.

llvm-svn: 31273
 2006-10-28 18:34:47 +00:00
Chris Lattner cde339cf1e const'ify jump table stuff 
llvm-svn: 31269
 2006-10-28 18:17:09 +00:00
Chris Lattner 28328f9a0a add an assert 
llvm-svn: 31267
 2006-10-28 18:11:20 +00:00
Chris Lattner 28bfe389d1 don't print dead jump tables 
llvm-svn: 31266
 2006-10-28 18:10:06 +00:00
Chris Lattner 113f7470e6 implement the BlockHasNoFallThrough hook 
llvm-svn: 31264
 2006-10-28 17:35:02 +00:00
Chris Lattner af8383806b 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.

llvm-svn: 31263
 2006-10-28 17:32:47 +00:00
Chris Lattner 53ebf20c26 add another target hook for branch folding. 
llvm-svn: 31262
 2006-10-28 17:29:57 +00:00
Jim Laskey eef273a16f Load and stores have not been uniqued properly. 
llvm-svn: 31261
 2006-10-28 17:25:28 +00:00
Chris Lattner 3e6b1c6157 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

llvm-svn: 31260
 2006-10-28 17:04:37 +00:00
Chris Lattner 3e763f5708 add option to isCriticalEdge 
llvm-svn: 31258
 2006-10-28 06:58:17 +00:00
Chris Lattner a6eb7e0803 break edges more intelligently 
llvm-svn: 31257
 2006-10-28 06:45:33 +00:00
Chris Lattner 80ea207bfa Expose a smarter way to break critical edges. 
llvm-svn: 31256
 2006-10-28 06:44:56 +00:00
Chris Lattner 400ac04e64 SplitCriticalEdge checks to see if an edge is critical, don't check twice 
llvm-svn: 31255
 2006-10-28 06:38:14 +00:00
Chris Lattner b78eb6c8d1 Fix a serious bug that caused any x86 vector stuff to infinite loop 
llvm-svn: 31254
 2006-10-28 06:15:26 +00:00
Evan Cheng ae8c29a7d3 Doh. Must check if GV is constant first before putting it in .cstring. 
llvm-svn: 31253
 2006-10-28 05:56:51 +00:00
Evan Cheng 0d782b4c60 Doh. Must check if GV is constant first. 
llvm-svn: 31252
 2006-10-28 05:56:06 +00:00