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27370 Commits

Author SHA1 Message Date
Chris Lattner 853b19a679 add a method for deleting dead jump tables. 
llvm-svn: 31268
 2006-10-28 18:12:00 +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 a4a2157405 determine whether a change was made 
llvm-svn: 31265
 2006-10-28 18:00:05 +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 5217111abe new testcase 
llvm-svn: 31259
 2006-10-28 17:04:16 +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
Nick Lewycky 1e075d9a40 Emitting raw bytecode is awfully rude. Add -disable-output. 
Clarify the test.

llvm-svn: 31251
 2006-10-28 02:34:41 +00:00
Jim Laskey 9ceb24bd5b Editorial clean up. 
llvm-svn: 31250
 2006-10-28 01:34:21 +00:00
Chris Lattner 23540b142c add a method 
llvm-svn: 31249
 2006-10-28 01:24:05 +00:00
Chris Lattner 5191c65485 prepare for a change I'm about to make 
llvm-svn: 31248
 2006-10-28 00:59:20 +00:00
Chris Lattner a6873c0f88 don't dist internal readme 
llvm-svn: 31247
 2006-10-28 00:51:15 +00:00
Chris Lattner acc6b37d0d don't dist internal readme's 
llvm-svn: 31246
 2006-10-28 00:49:54 +00:00
Chris Lattner 3be52bb570 don't distribute internal readme's 
llvm-svn: 31245
 2006-10-28 00:48:27 +00:00
Reid Spencer 247e09a07c Make sure all the readme files get distributed. 
llvm-svn: 31244
 2006-10-28 00:11:39 +00:00
Jim Laskey bd0f088743 Clean up. 
llvm-svn: 31243
 2006-10-27 23:52:51 +00:00
Chris Lattner 84a035056e Fix a bug in merged condition handling (CodeGen/Generic/2006-10-27-CondFolding.ll). 
Add many fewer CFG edges and PHI node entries.  If there is a switch which has
the same block as multiple destinations, only add that block once as a successor/phi
node (in the jumptable case)

llvm-svn: 31242
 2006-10-27 23:50:33 +00:00
Chris Lattner b722c1375e new testcase 
llvm-svn: 31241
 2006-10-27 23:47:34 +00:00
Jim Laskey f576b42bb2 Switch over from SelectionNodeCSEMap to FoldingSet. 
llvm-svn: 31240
 2006-10-27 23:46:08 +00:00
Devang Patel 2e13bf24c8 Use doc_code class. 
llvm-svn: 31239
 2006-10-27 23:06:27 +00:00
Jim Laskey c6b12bd2b1 Clean up 
llvm-svn: 31238
 2006-10-27 22:52:02 +00:00
Devang Patel 7e5af6808c Document removeModule(). 
llvm-svn: 31237
 2006-10-27 22:02:30 +00:00
Chris Lattner 28174f5a3a this doesn't occur any more in mason 
llvm-svn: 31236
 2006-10-27 22:02:19 +00:00
Chris Lattner 4c0cc53da1 the code in question is now: 
cmpw cr0, r7, r3
        ble cr0, LBB1_5 ;bb25
LBB1_8: ;bb17
        cmpw cr0, r8, r5
        bgt cr0, LBB1_2 ;bb

which is just as good as crnand.

llvm-svn: 31235
 2006-10-27 22:00:55 +00:00
Devang Patel 59085445e3 Document getAlignment() 
llvm-svn: 31234
 2006-10-27 21:58:31 +00:00
Chris Lattner b9392fb635 remove debug code 
llvm-svn: 31233
 2006-10-27 21:58:03 +00:00
Chris Lattner f1b54fd7a5 Codegen cond&cond with two branches. This compiles (f.e.) PowerPC/and-branch.ll to: 
cmpwi cr0, r4, 4
        bgt cr0, LBB1_2 ;UnifiedReturnBlock
LBB1_3: ;entry
        cmplwi cr0, r3, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock

instead of:

        cmpwi cr7, r4, 4
        mfcr r2
        addic r4, r3, -1
        subfe r3, r4, r3
        rlwinm r2, r2, 30, 31, 31
        or r2, r2, r3
        cmplwi cr0, r2, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock
LBB1_1: ;cond_true

llvm-svn: 31232
 2006-10-27 21:54:23 +00:00
Chris Lattner feaa76a3cc new testcase 
llvm-svn: 31231
 2006-10-27 21:52:39 +00:00
Chris Lattner ed0110b949 Turn conditions like x<Y|z==q into multiple blocks. 
This compiles Regression/CodeGen/X86/or-branch.ll into:

_foo:
        subl $12, %esp
        call L_bar$stub
        movl 20(%esp), %eax
        movl 16(%esp), %ecx
        cmpl $5, %eax
        jl LBB1_1       #cond_true
LBB1_3: #entry
        testl %ecx, %ecx
        jne LBB1_2      #UnifiedReturnBlock
LBB1_1: #cond_true
        call L_bar$stub
        addl $12, %esp
        ret
LBB1_2: #UnifiedReturnBlock
        addl $12, %esp
        ret

instead of:

_foo:
        subl $12, %esp
        call L_bar$stub
        movl 20(%esp), %eax
        movl 16(%esp), %ecx
        cmpl $4, %eax
        setg %al
        testl %ecx, %ecx
        setne %cl
        testb %cl, %al
        jne LBB1_2      #UnifiedReturnBlock
LBB1_1: #cond_true
        call L_bar$stub
        addl $12, %esp
        ret
LBB1_2: #UnifiedReturnBlock
        addl $12, %esp
        ret

And on ppc to:

        cmpwi cr0, r29, 5
        blt cr0, LBB1_1 ;cond_true
LBB1_3: ;entry
        cmplwi cr0, r30, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock

instead of:

        cmpwi cr7, r4, 4
        mfcr r2
        addic r4, r3, -1
        subfe r30, r4, r3
        rlwinm r29, r2, 30, 31, 31
        and r2, r29, r30
        cmplwi cr0, r2, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock

llvm-svn: 31230
 2006-10-27 21:36:01 +00:00
Chris Lattner 4b19a4b203 new testcase 
llvm-svn: 31229
 2006-10-27 21:32:10 +00:00
Evan Cheng e056dd5928 Fixed a significant bug where unpcklpd is incorrectly used to extract element 1 from a v2f64 value. 
llvm-svn: 31228
 2006-10-27 21:08:32 +00:00
Evan Cheng 2252fb211a Add a new vextract test case. 
llvm-svn: 31227
 2006-10-27 21:05:18 +00:00
Bill Wendling ce3afd64e9 Forgot a } 
llvm-svn: 31226
 2006-10-27 20:22:04 +00:00
Bill Wendling 74a4a2a80b Re-added the part where it tries to remove all global variables first. 
llvm-svn: 31225
 2006-10-27 20:18:06 +00:00
Jim Laskey cef515fcc0 SmallVector append not insert. 
llvm-svn: 31224
 2006-10-27 19:38:32 +00:00
Jim Laskey a9e9cae33e Grrr. 
llvm-svn: 31223
 2006-10-27 19:20:12 +00:00
Jim Laskey a88e609c0f Temp patch for missing functionality. 
llvm-svn: 31222
 2006-10-27 19:14:16 +00:00
Reid Spencer 115511f2e2 Make the Value and Type methods print a newline so it prints nicely in gdb 
llvm-svn: 31221
 2006-10-27 18:58:54 +00:00
Evan Cheng bf3df77758 Fix for PR968: expand vector sdiv, udiv, srem, urem. 
llvm-svn: 31220
 2006-10-27 18:49:08 +00:00
Bill Wendling e0412f500e MathExtras isn't in the llvm/ADT directory but in the llvm/Support directory. 
llvm-svn: 31219
 2006-10-27 18:47:29 +00:00