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Author SHA1 Message Date
Chris Lattner
ac4e2f1414 add source 
llvm-svn: 37253
 2007-05-19 01:22:52 +00:00
Chris Lattner
a13d75f270 Handle negative strides much more optimally. This compiles X86/lsr-negative-stride.ll 
into:

_t:
        movl 8(%esp), %ecx
        movl 4(%esp), %eax
        cmpl %ecx, %eax
        je LBB1_3       #bb17
LBB1_1: #bb
        cmpl %ecx, %eax
        jg LBB1_4       #cond_true
LBB1_2: #cond_false
        subl %eax, %ecx
        cmpl %ecx, %eax
        jne LBB1_1      #bb
LBB1_3: #bb17
        ret
LBB1_4: #cond_true
        subl %ecx, %eax
        cmpl %ecx, %eax
        jne LBB1_1      #bb
        jmp LBB1_3      #bb17

instead of:

_t:
        subl $4, %esp
        movl %esi, (%esp)
        movl 12(%esp), %ecx
        movl 8(%esp), %eax
        cmpl %ecx, %eax
        je LBB1_4       #bb17
LBB1_1: #bb.outer
        movl %ecx, %edx
        negl %edx
LBB1_2: #bb
        cmpl %ecx, %eax
        jle LBB1_5      #cond_false
LBB1_3: #cond_true
        addl %edx, %eax
        cmpl %ecx, %eax
        jne LBB1_2      #bb
LBB1_4: #bb17
        movl (%esp), %esi
        addl $4, %esp
        ret
LBB1_5: #cond_false
        movl %ecx, %edx
        subl %eax, %edx
        movl %eax, %esi
        addl %esi, %esi
        cmpl %ecx, %esi
        je LBB1_4       #bb17
LBB1_6: #cond_false.bb.outer_crit_edge
        movl %edx, %ecx
        jmp LBB1_1      #bb.outer

llvm-svn: 37252
 2007-05-19 01:22:21 +00:00
Chris Lattner
a0fc844390 new testcase 
llvm-svn: 37251
 2007-05-19 01:21:39 +00:00
Chris Lattner
27b469b945 same patch as the previous one, but the symmetric case 
llvm-svn: 37249
 2007-05-19 00:46:51 +00:00
Chris Lattner
2430b7c4aa Disable the (A == (B-A)) -> 2*A == B xform when the sub has multiple uses (in 
this case, the xform introduces an extra operation).  This compiles
PowerPC/compare-duplicate.ll into:

_test:
        subf r2, r3, r4
        cmplw cr0, r2, r3
        bne cr0, LBB1_2 ;F

instead of:

_test:
        slwi r2, r3, 1
        subf r3, r3, r4
        cmplw cr0, r4, r2
        bne cr0, LBB1_2 ;F

This is target independent of course.

llvm-svn: 37246
 2007-05-19 00:43:44 +00:00
Chris Lattner
26266f163a new testcase 
llvm-svn: 37245
 2007-05-19 00:41:40 +00:00
Reid Spencer
fe3c213178 Fix an assertion introduced by my last change to the toString method. We 
can't use getZExtValue() to extract the low order bits for each digit.
Instead, we need to access the low order word directly.

llvm-svn: 37242
 2007-05-19 00:29:55 +00:00
Dan Gohman
875f6bde73 Apply this patch: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070514/049845.html

llvm-svn: 37240
 2007-05-18 23:21:46 +00:00
Chris Lattner
a7834d79a0 add a note 
llvm-svn: 37239
 2007-05-18 20:18:14 +00:00
Dan Gohman
91cc43a237 Add a testcase for unrolling loops with unknown tripcounts. 
llvm-svn: 37238
 2007-05-18 19:59:23 +00:00
Evan Cheng
ca7bc898aa Clean up. 
llvm-svn: 37237
 2007-05-18 19:32:08 +00:00
Evan Cheng
ad9ce3c5b2 Change to depth-first traversal. 
llvm-svn: 37236
 2007-05-18 19:26:33 +00:00
Dale Johannesen
09b2912ab7 Document an inefficiency in tail merging. 
llvm-svn: 37235
 2007-05-18 18:46:40 +00:00
Dan Gohman
ec87afe526 Use MVT::FIRST_VECTOR_VALUETYPE and MVT::LAST_VECTOR_VALUETYPE. 
llvm-svn: 37234
 2007-05-18 18:44:07 +00:00
Dan Gohman
b593ad9fb0 Qualify calls to getTypeForValueType with MVT:: too. 
llvm-svn: 37233
 2007-05-18 18:41:29 +00:00
Evan Cheng
1ed1741260 Some restructuring in preparation for most aggressive if-conversion. 
llvm-svn: 37231
 2007-05-18 18:14:37 +00:00
Dan Gohman
d6a33914fb Qualify several calls to functions in the MVT namespace, for consistency. 
llvm-svn: 37230
 2007-05-18 17:52:13 +00:00
Evan Cheng
234f07808b Watch out for blocks that end with a return. 
llvm-svn: 37227
 2007-05-18 17:06:53 +00:00
Duncan Sands
6684ec18cd Fix typo. 
llvm-svn: 37224
 2007-05-18 12:13:34 +00:00
Duncan Sands
973f665e1f Fix typo. 
llvm-svn: 37223
 2007-05-18 09:04:20 +00:00
Chris Lattner
5565c09a5b better portability for intptr_t. 
llvm-svn: 37221
 2007-05-18 07:07:05 +00:00
Chris Lattner
20d50bfeeb finished the first draft 
llvm-svn: 37219
 2007-05-18 06:38:51 +00:00
Chris Lattner
ac84cb2264 crank out notes 
llvm-svn: 37218
 2007-05-18 06:33:02 +00:00
Reid Spencer
8d3963308c Regenerate. 
llvm-svn: 37207
 2007-05-18 05:48:07 +00:00
Chris Lattner
acf36b57ca validation fix 
llvm-svn: 37206
 2007-05-18 05:38:44 +00:00
Chris Lattner
306068411b validation fixes 
llvm-svn: 37205
 2007-05-18 05:36:14 +00:00
Chris Lattner
c63d04ecce Fix PR1434 and test/Linker/link-archive.ll, this is a regression from 1.9. 
llvm-svn: 37204
 2007-05-18 04:02:46 +00:00
Reid Spencer
c494057e90 Add a test case for PR1434 
llvm-svn: 37203
 2007-05-18 03:46:50 +00:00
Reid Spencer
45986321e9 Avoid an infinite loop when TestRunner.sh is run outside of the test dir. 
llvm-svn: 37201
 2007-05-18 02:06:03 +00:00
Evan Cheng
40eecb3d06 If true / false blocks fallthrough before ifcvt, add unconditional branches to ifcvt'd block. 
llvm-svn: 37200
 2007-05-18 01:55:58 +00:00
Evan Cheng
e875732104 Mark calls non-predicable for now. Need to ensure it's the last instruction in the if-converted block or make sure it preserve condition code. 
llvm-svn: 37199
 2007-05-18 01:53:54 +00:00
Dale Johannesen
ca37006ffb Remove some unneeded branches. (spotted by Evan, thanks) 
llvm-svn: 37198
 2007-05-18 01:28:58 +00:00
Evan Cheng
03349b0344 Silence some compilation warnings. 
llvm-svn: 37197
 2007-05-18 01:19:57 +00:00
Chris Lattner
fb63e7388c tweak 
llvm-svn: 37196
 2007-05-18 00:44:29 +00:00
Evan Cheng
c6aa69557a Make use of target specific block size limits; bug fixes. 
llvm-svn: 37195
 2007-05-18 00:20:58 +00:00
Evan Cheng
2fc338fac1 Set ARM if-conversion block size threshold to 10 instructions for now. 
llvm-svn: 37194
 2007-05-18 00:19:34 +00:00
Evan Cheng
90b0ff05f6 RemoveBranch() and InsertBranch() now returns number of instructions deleted / inserted. 
llvm-svn: 37193
 2007-05-18 00:18:17 +00:00
Evan Cheng
234aab208a RemoveBranch() and InsertBranch() now returns number of instructions deleted / inserted. 
llvm-svn: 37192
 2007-05-18 00:05:48 +00:00
Evan Cheng
3ce37e8d78 Fix comment. 
llvm-svn: 37191
 2007-05-18 00:00:30 +00:00
Evan Cheng
b4cc6606d5 Move isSuccessor() offline, change it to use std::find. 
llvm-svn: 37190
 2007-05-17 23:58:53 +00:00
Reid Spencer
a82bc57c04 Fix a problem with building .y files when BISON is not present. 
Merged from the release_20 branch.

llvm-svn: 37188
 2007-05-17 22:51:35 +00:00
Devang Patel
6e8f1aa332 Fix PR1431 
Test case at Transformations/SCCP/2007-05-16-InvokeCrash.ll

llvm-svn: 37185
 2007-05-17 22:10:15 +00:00
Devang Patel
8b21d8aa20 New test. 
llvm-svn: 37184
 2007-05-17 22:05:20 +00:00
Chris Lattner
c0709b5819 validation fixes 
llvm-svn: 37183
 2007-05-17 22:03:43 +00:00
Chris Lattner
0b086ea65a llvm-gcc now supports almost all gcc extensions. The key missing one is 
builtin_apply.

llvm-svn: 37182
 2007-05-17 22:02:24 +00:00
Chris Lattner
966545b7fb add a section about API changes. 
llvm-svn: 37181
 2007-05-17 21:41:31 +00:00
Dale Johannesen
f66c6b85f1 More effective breakdown of memcpy into repeated load/store. These are now 
in the order lod;lod;lod;sto;sto;sto which means the load-store optimizer
has a better chance of producing ldm/stm.  Ideally you would get cooperation
from the RA as well but this is not there yet.

llvm-svn: 37179
 2007-05-17 21:31:21 +00:00
Dan Gohman
98860888df Correct a name in a comment. 
llvm-svn: 37178
 2007-05-17 21:30:39 +00:00
Chris Lattner
c68a1721c2 silence some "comparison between signed and unsigned integer expressions" 
warnings

llvm-svn: 37177
 2007-05-17 20:01:40 +00:00
Chris Lattner
c963beca3b minor tweak 
llvm-svn: 37176
 2007-05-17 19:58:57 +00:00