600db3eb96
fix regressions from my previous checking, including
...
Transforms/InstCombine/2006-12-08-ICmp-Combining.ll
llvm-svn: 36989
2007-05-11 16:58:45 +00:00
fe2b44de9f
fix Transforms/InstCombine/2007-05-10-icmp-or.ll
...
llvm-svn: 36984
2007-05-11 05:55:56 +00:00
9557247412
Fix PR1333
...
Testcases :
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049451.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049452.html
llvm-svn: 36955
2007-05-09 08:24:12 +00:00
2e1f804764
Fix various whitespace inconsistencies.
...
llvm-svn: 36936
2007-05-08 15:19:19 +00:00
49d08a57f5
Correct the comment for ApproximateLoopSize to reflect what it actually does.
...
llvm-svn: 36935
2007-05-08 15:14:19 +00:00
86e1dcf530
Don't generate branch to entry block.
...
llvm-svn: 36917
2007-05-08 01:01:04 +00:00
3b6f75cb2f
Fix PR1395, by passing the ID correctly
...
llvm-svn: 36894
2007-05-06 23:13:56 +00:00
e7da2d6ac3
Fix typo in comment.
...
llvm-svn: 36873
2007-05-06 13:37:16 +00:00
9b35b3e863
Fix a bug in my previous patch
...
llvm-svn: 36857
2007-05-06 07:24:03 +00:00
5aa73fe34c
Implement Transforms/InstCombine/cast_ptr.ll
...
llvm-svn: 36809
2007-05-05 22:41:33 +00:00
361e981415
wrap long lines
...
llvm-svn: 36807
2007-05-05 22:32:24 +00:00
1077d2a30d
Fix Transforms/LoopUnroll/2007-05-05-UnrollMiscomp.ll and PR1385.
...
If we have a LCSSA, only modify the input value if the inval was defined
by an instruction in the loop. If defined by something before the loop,
it is still valid.
llvm-svn: 36784
2007-05-05 18:49:57 +00:00
57d89a5a89
make a temporary for *SI, no functionality change.
...
llvm-svn: 36782
2007-05-05 18:36:36 +00:00
5c827bda0d
Fix InstCombine/2007-05-04-Crash.ll and PR1384
...
llvm-svn: 36775
2007-05-05 01:59:31 +00:00
2bcbd5b7ca
Use IntrinsicInst to test for prefetch instructions, which is ever so
...
slightly nicer than using CallInst with an extra check; thanks Chris.
llvm-svn: 36743
2007-05-04 14:59:09 +00:00
3fbb18d1b6
Allow strength reduction to make use of addressing modes for the
...
address operand in a prefetch intrinsic.
llvm-svn: 36713
2007-05-03 23:20:33 +00:00
8c78a0bff0
Drop 'const'
...
llvm-svn: 36662
2007-05-03 01:11:54 +00:00
e95c6ad802
Use 'static const char' instead of 'static const int'.
...
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.
llvm-svn: 36652
2007-05-02 21:39:20 +00:00
41223586a2
Fix build error.
...
llvm-svn: 36648
2007-05-02 20:37:47 +00:00
09f162ca6a
Do not use typeinfo to identify pass in pass manager.
...
llvm-svn: 36632
2007-05-01 21:15:47 +00:00
546ea7ea88
Implement review feedback
...
llvm-svn: 36564
2007-04-29 18:02:48 +00:00
b18f8f85e9
Implement review feedback. Aliasees can be either GlobalValue's or
...
bitcasts of them.
llvm-svn: 36537
2007-04-28 13:45:00 +00:00
089e35cc57
fix a bug triggered by 403.gcc
...
llvm-svn: 36527
2007-04-28 05:27:36 +00:00
6e880871e9
Fix several latent bugs in EmitGEPOffset that didn't manifest with its
...
previous clients. This fixes MallocBench/gs
llvm-svn: 36525
2007-04-28 04:52:43 +00:00
c753800800
uhn zap cvs
...
llvm-svn: 36523
2007-04-28 03:50:56 +00:00
acbf6a401d
Implement PR1345 and Transforms/InstCombine/bitcast-gep.ll
...
llvm-svn: 36521
2007-04-28 00:57:34 +00:00
1db224db92
refactor some code relating to pointer cast xforms, pulling it out of the codepath
...
for unrelated casts.
llvm-svn: 36511
2007-04-27 17:44:50 +00:00
3178736d50
Using APInt more efficiently.
...
llvm-svn: 36475
2007-04-26 16:42:07 +00:00
d3ccc073a2
Mem2Reg does not need TargetData.
...
llvm-svn: 36444
2007-04-25 18:32:35 +00:00
073be55d8e
Remove unused function argument.
...
llvm-svn: 36441
2007-04-25 17:15:20 +00:00
a97b694c82
Implement aliases. This fixes PR1017 and it's dependent bugs. CFE part
...
will follow.
llvm-svn: 36435
2007-04-25 14:27:10 +00:00
827cb98a0a
If an alloca only has two types of uses: 1) reads 2) a memcpy/memmove that
...
copies from a constant global, then we can change the reads to read from the
global instead of from the alloca. This eliminates the alloca and the memcpy,
and promotes secondary optimizations (because the loads are now loads from
a constant global).
This is important for a common C idiom:
void foo() {
int A[] = {1,2,3,4,5,6,7,8,9...};
... only reads of A ...
}
For some reason, people forget to mark the array static or const.
This triggers on these multisource benchmarks:
JM/ldecode: block_pos, [3 x [4 x [4 x i32]]]
FreeBench/mason: m, [18 x i32], inlined 4 times
MiBench/office-stringsearch: search_strings, [1332 x i8*]
MiBench/office-stringsearch: find_strings, [1333 x i8*]
Prolangs-C++/city: dirs, [9 x i8*], inlined 4 places
and these spec benchmarks:
177.mesa: message, [8 x [32 x i8]]
186.crafty: bias_rl45, [64 x i32]
186.crafty: diag_sq, [64 x i32]
186.crafty: empty, [9 x i8]
186.crafty: xlate, [15 x i8]
186.crafty: status, [13 x i8]
186.crafty: bdinfo, [25 x i8]
445.gobmk: routines, [16 x i8*]
458.sjeng: piece_rep, [14 x i8*]
458.sjeng: t, [13 x i32], inlined 4 places.
464.h264ref: block8x8_idx, [3 x [4 x [4 x i32]]]
464.h264ref: block_pos, [3 x [4 x [4 x i32]]]
464.h264ref: j_off_tab, [12 x i32]
This implements Transforms/ScalarRepl/memcpy-from-global.ll
llvm-svn: 36429
2007-04-25 06:40:51 +00:00
31e5addb67
refactor the SROA code out into its own method, no functionality change.
...
llvm-svn: 36426
2007-04-25 05:02:56 +00:00
510fefcd8a
Undo my previous changes. Since my approach to this problem is being revised,
...
this approach is no longer appropriate.
llvm-svn: 36421
2007-04-25 04:18:54 +00:00
d3208523b2
Fix
...
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070423/048376.html
llvm-svn: 36417
2007-04-25 00:37:04 +00:00
c24701ed7f
Rollback some changes that adversely affected performance. I'm currently rethinking
...
my approach to this, so hopefully I'll find a way to do this without making this slower.
llvm-svn: 36392
2007-04-24 06:40:39 +00:00
38bc86f057
Fix
...
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070423/048333.html
llvm-svn: 36380
2007-04-23 22:42:03 +00:00
64995e1b3f
Make PredicateSimplifier not use DominatorTree.
...
llvm-svn: 36300
2007-04-21 07:38:12 +00:00
2965adb849
Fix a comment.
...
llvm-svn: 36299
2007-04-21 07:12:44 +00:00
5959f42498
Comment out usage of write() for now.
...
llvm-svn: 36287
2007-04-20 22:40:10 +00:00
83a3adcc3f
Avoid recursion.
...
llvm-svn: 36272
2007-04-20 20:04:37 +00:00
2da606c757
Move more passes to using ETForest instead of DominatorTree.
...
llvm-svn: 36271
2007-04-20 06:27:13 +00:00
aafe4e216e
Make use of ConstantInt::isZero instead of ConstantInt::isNullValue.
...
llvm-svn: 36261
2007-04-19 05:39:12 +00:00
82fcf3cb5f
Make the operations of APInt variables more efficient.
...
llvm-svn: 36260
2007-04-19 05:35:00 +00:00
db9b65d67a
Revert Owen's last check-in. This is breaking Mac OS X / PPC llvm-gcc bootstrap.
...
llvm-svn: 36258
2007-04-18 22:39:00 +00:00
9421f03959
Revert changes that caused breakage.
...
llvm-svn: 36255
2007-04-18 06:46:57 +00:00
9a6091dec1
Switch more uses of DominatorTree over to ETForest.
...
llvm-svn: 36254
2007-04-18 05:43:13 +00:00
550e8db9c7
Use ETForest instead of DominatorTree.
...
llvm-svn: 36252
2007-04-18 05:25:43 +00:00
fc40d446c9
Use ETForest instead of DominatorTree.
...
llvm-svn: 36249
2007-04-18 04:55:33 +00:00
08293fd6d1
Use new ETForest accessor.
...
llvm-svn: 36248
2007-04-18 04:46:35 +00:00
f38f2f2394
Use ETForest instead of DominatorTree.
...
llvm-svn: 36247
2007-04-18 04:39:32 +00:00
2ce1116b33
Spell doFinalization right, so that it is a proper virtual override and
...
gets called.
llvm-svn: 36208
2007-04-17 18:21:36 +00:00
233f97ac6a
remove use of BasicBlock::getNext
...
llvm-svn: 36205
2007-04-17 18:09:47 +00:00
24e2d9ca03
remove use of BasicBlock::getNext
...
llvm-svn: 36202
2007-04-17 17:54:12 +00:00
cd9bda71a0
eliminate use of Instruction::getNext()
...
llvm-svn: 36200
2007-04-17 17:51:03 +00:00
77a3edcb92
remove use of Instruction::getNext
...
llvm-svn: 36199
2007-04-17 17:47:54 +00:00
abdff3fecd
Fix
...
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070416/047888.html
llvm-svn: 36182
2007-04-16 23:03:45 +00:00
fb80151c42
Removed tabs everywhere except autogenerated & external files. Add make
...
target for tabs checking.
llvm-svn: 36146
2007-04-16 18:10:23 +00:00
343c88cdb9
Fix PR1335 and Transforms/Inline/2007-04-15-InlineEH.ll
...
llvm-svn: 36090
2007-04-15 21:38:06 +00:00
f35a1dbc7a
Remove ImmediateDominator analysis. The same information can be obtained from DomTree. A lot of code for
...
constructing ImmediateDominator is now folded into DomTree construction.
This is part of the ongoing work for PR217.
llvm-svn: 36063
2007-04-15 08:47:27 +00:00
f8a7bf317e
fix SimplifyLibCalls/IsDigit.ll
...
llvm-svn: 36047
2007-04-15 05:38:40 +00:00
4a6e0cbd41
Extend store merging to support the 'if/then' version in addition to if/then/else.
...
This sinks the two stores in this example into a single store in cond_next. In this
case, it allows elimination of the load as well:
store double 0.000000e+00, double* @s.3060
%tmp3 = fcmp ogt double %tmp1, 5.000000e-01 ; <i1> [#uses=1]
br i1 %tmp3, label %cond_true, label %cond_next
cond_true: ; preds = %entry
store double 1.000000e+00, double* @s.3060
br label %cond_next
cond_next: ; preds = %entry, %cond_true
%tmp6 = load double* @s.3060 ; <double> [#uses=1]
This implements Transforms/InstCombine/store-merge.ll:test2
llvm-svn: 36040
2007-04-15 01:02:18 +00:00
14a251b937
refactor some code, no functionality change.
...
llvm-svn: 36037
2007-04-15 00:07:55 +00:00
28d921d04f
fix long lines
...
llvm-svn: 36031
2007-04-14 23:32:02 +00:00
7bfdd0abe1
Implement Transforms/InstCombine/vec_extract_elt.ll, transforming:
...
define i32 @test(float %f) {
%tmp7 = insertelement <4 x float> undef, float %f, i32 0
%tmp17 = bitcast <4 x float> %tmp7 to <4 x i32>
%tmp19 = extractelement <4 x i32> %tmp17, i32 0
ret i32 %tmp19
}
into:
define i32 @test(float %f) {
%tmp19 = bitcast float %f to i32 ; <i32> [#uses=1]
ret i32 %tmp19
}
On PPC, this is the difference between:
_test:
mfspr r2, 256
oris r3, r2, 8192
mtspr 256, r3
stfs f1, -16(r1)
addi r3, r1, -16
addi r4, r1, -32
lvx v2, 0, r3
stvx v2, 0, r4
lwz r3, -32(r1)
mtspr 256, r2
blr
and:
_test:
stfs f1, -4(r1)
nop
nop
nop
lwz r3, -4(r1)
blr
llvm-svn: 36025
2007-04-14 23:02:14 +00:00
b37fb6a0da
Implement InstCombine/vec_demanded_elts.ll:test2. This allows us to turn
...
unsigned test(float f) {
return _mm_cvtsi128_si32( (__m128i) _mm_set_ss( f*f ));
}
into:
_test:
movss 4(%esp), %xmm0
mulss %xmm0, %xmm0
movd %xmm0, %eax
ret
instead of:
_test:
movss 4(%esp), %xmm0
mulss %xmm0, %xmm0
xorps %xmm1, %xmm1
movss %xmm0, %xmm1
movd %xmm1, %eax
ret
GCC gets:
_test:
subl $28, %esp
movss 32(%esp), %xmm0
mulss %xmm0, %xmm0
xorps %xmm1, %xmm1
movss %xmm0, %xmm1
movaps %xmm1, %xmm0
movd %xmm0, 12(%esp)
movl 12(%esp), %eax
addl $28, %esp
ret
llvm-svn: 36020
2007-04-14 22:29:23 +00:00
a6b5660209
avoid copying sets and vectors around.
...
llvm-svn: 36017
2007-04-14 22:10:17 +00:00
6f58839b20
avoid iterator invalidation.
...
llvm-svn: 36002
2007-04-14 18:06:52 +00:00
4bd0fd367a
An even better fix.
...
llvm-svn: 35998
2007-04-14 17:18:29 +00:00
7233aa9369
Fix recent regression that broke several llvm-tests.
...
llvm-svn: 35996
2007-04-14 16:55:19 +00:00
49fa8d2bff
Implement a few missing xforms: printf("foo\n") -> puts. printf("x") -> putchar
...
printf("") -> noop. Still need to do the xforms for fprintf.
This implements Transforms/SimplifyLibCalls/Printf.ll
llvm-svn: 35984
2007-04-14 01:17:48 +00:00
02137eec8f
in addition to merging, constantmerge should also delete trivially dead globals,
...
in order to clean up after simplifylibcalls.
llvm-svn: 35982
2007-04-14 01:11:54 +00:00
efb33d28c6
Implement PR1201 and test/Transforms/InstCombine/malloc-free-delete.ll
...
llvm-svn: 35981
2007-04-14 00:20:02 +00:00
164b76565b
use an accessor to simplify code.
...
llvm-svn: 35979
2007-04-14 00:17:39 +00:00
efd3051d60
Now that codegen prepare isn't defeating me, I can finally fix what I set
...
out to do! :)
This fixes a problem where LSR would insert a bunch of code into each MBB
that uses a particular subexpression (e.g. IV+base+C). The problem is that
this code cannot be CSE'd back together if inserted into different blocks.
This patch changes LSR to attempt to insert a single copy of this code and
share it, allowing codegenprepare to duplicate the code if it can be sunk
into various addressing modes. On CodeGen/ARM/lsr-code-insertion.ll,
for example, this gives us code like:
add r8, r0, r5
str r6, [r8, #+4]
..
ble LBB1_4 @cond_next
LBB1_3: @cond_true
str r10, [r8, #+4]
LBB1_4: @cond_next
...
LBB1_5: @cond_true55
ldr r6, LCPI1_1
str r6, [r8, #+4]
instead of:
add r10, r0, r6
str r8, [r10, #+4]
...
ble LBB1_4 @cond_next
LBB1_3: @cond_true
add r8, r0, r6
str r10, [r8, #+4]
LBB1_4: @cond_next
...
LBB1_5: @cond_true55
add r8, r0, r6
ldr r10, LCPI1_1
str r10, [r8, #+4]
Besides being smaller and more efficient, this makes it immediately
obvious that it is profitable to predicate LBB1_3 now :)
llvm-svn: 35972
2007-04-13 20:42:26 +00:00
feee64e997
Completely rewrite addressing-mode related sinking of code. In particular,
...
this fixes problems where codegenprepare would sink expressions into load/stores
that are not valid, and fixes cases where it would miss important valid ones.
This fixes several serious codesize and perf issues, particularly on targets
with complex addressing modes like arm and x86. For example, now we compile
CodeGen/X86/isel-sink.ll to:
_test:
movl 8(%esp), %eax
movl 4(%esp), %ecx
cmpl $1233, %eax
ja LBB1_2 #F
LBB1_1: #T
movl $4, (%ecx,%eax,4)
movl $141, %eax
ret
LBB1_2: #F
movl (%ecx,%eax,4), %eax
ret
instead of:
_test:
movl 8(%esp), %eax
leal (,%eax,4), %ecx
addl 4(%esp), %ecx
cmpl $1233, %eax
ja LBB1_2 #F
LBB1_1: #T
movl $4, (%ecx)
movl $141, %eax
ret
LBB1_2: #F
movl (%ecx), %eax
ret
llvm-svn: 35970
2007-04-13 20:30:56 +00:00
38705d5494
Remove use of SlowOperationInformer.
...
llvm-svn: 35967
2007-04-13 18:58:18 +00:00
b730fe57bf
Undo previous check-in.
...
llvm-svn: 35966
2007-04-13 18:35:15 +00:00
f929b86140
Hello uses LLVMSupport.a (SlowerOperationInformer)
...
llvm-svn: 35965
2007-04-13 18:28:23 +00:00
749e4668e7
Implement the "thread_local" keyword.
...
llvm-svn: 35950
2007-04-12 18:32:50 +00:00
c78d122a6a
Build Hello by default so it can be used in test cases.
...
llvm-svn: 35922
2007-04-11 21:03:37 +00:00
5ee4d0726a
Fix Transforms/ScalarRepl/union-pointer.ll
...
llvm-svn: 35906
2007-04-11 15:45:25 +00:00
74ff60ff84
Turn stuff like:
...
icmp slt i32 %X, 0 ; <i1>:0 [#uses=1]
sext i1 %0 to i32 ; <i32>:1 [#uses=1]
into:
%X.lobit = ashr i32 %X, 31 ; <i32> [#uses=1]
This implements InstCombine/icmp.ll:test[34]
llvm-svn: 35891
2007-04-11 06:57:46 +00:00
d0f7942e23
Simplify some comparisons to arithmetic, this implements:
...
Transforms/InstCombine/icmp.ll
llvm-svn: 35890
2007-04-11 06:53:04 +00:00
20f2372a7c
canonicalize (x <u 2147483648) -> (x >s -1) and (x >u 2147483647) -> (x <s 0)
...
llvm-svn: 35886
2007-04-11 06:12:58 +00:00
7ddbff090a
fix a miscompilation of:
...
define i32 @test(i32 %X) {
entry:
%Y = and i32 %X, 4 ; <i32> [#uses=1]
icmp eq i32 %Y, 0 ; <i1>:0 [#uses=1]
sext i1 %0 to i32 ; <i32>:1 [#uses=1]
ret i32 %1
}
by moving code out of commonIntCastTransforms into visitZExt. Simplify the
APInt gymnastics in it etc.
llvm-svn: 35885
2007-04-11 05:45:39 +00:00
32104034f8
fix a regression introduced by my last patch.
...
llvm-svn: 35879
2007-04-11 03:27:24 +00:00
daa012d1fb
Simplify SROA conversion to integer in some ways, make it more general in others.
...
We now tolerate small amounts of undefined behavior, better emulating what
would happen if the transaction actually occurred in memory. This fixes
SingleSource/UnitTests/2007-04-10-BitfieldTest.c on PPC, at least until
Devang gets a chance to fix the CFE from doing undefined things with bitfields :)
llvm-svn: 35875
2007-04-11 00:57:54 +00:00
467b69cabb
Strengthen the boundary conditions of this fold, implementing
...
InstCombine/set.ll:test25
llvm-svn: 35852
2007-04-09 23:52:13 +00:00
3c7867935e
Re-constify things that don't break the build. Last patch in this
...
series, I promise.
llvm-svn: 35848
2007-04-09 23:38:18 +00:00
3e9690f987
eliminate the last uses of some TLI methods.
...
llvm-svn: 35844
2007-04-09 23:29:07 +00:00
f1ca1376d3
Unconst-ify stuff that broke the build.
...
llvm-svn: 35843
2007-04-09 23:08:26 +00:00
5917716146
Const-ify some parameters, and some cosmetic cleanups. No functionality
...
change.
llvm-svn: 35842
2007-04-09 22:54:50 +00:00
e0ef5ac6bd
Tabs -> Spaces
...
llvm-svn: 35841
2007-04-09 22:31:43 +00:00
83efbc84f7
Improve some _slow_ behavior introduced in my patches the last few days.
...
llvm-svn: 35839
2007-04-09 22:25:09 +00:00
780c009756
switch LSR to use isLegalAddressingMode instead of other simpler hooks
...
llvm-svn: 35837
2007-04-09 22:20:14 +00:00
bca0d57179
Check _all_ PHINodes.
...
llvm-svn: 35836
2007-04-09 22:20:10 +00:00
8eb8eeada9
Insert new pre-header before new header. Original pre-header may
...
happen to be an entry, in such case, it is not a good idea to
insert new block before entry.
Also fix typo in assertion check.
llvm-svn: 35833
2007-04-09 21:40:43 +00:00
854197884b
Preserve canonical loop form.
...
llvm-svn: 35829
2007-04-09 20:19:46 +00:00
8436cdfda2
Don't link against System or Support library. These things will already
...
be in the opt tool.
llvm-svn: 35827
2007-04-09 19:17:47 +00:00
b9af5747a5
Do not create new pre-header. Reuse original pre-header.
...
llvm-svn: 35825
2007-04-09 19:04:21 +00:00
03d7ae3a74
Simpler for() loops.
...
llvm-svn: 35822
2007-04-09 17:09:13 +00:00
d6ba41e02d
Fix future bug. Of course, Chris spotted this.
...
Handle Argument or Undef as an incoming PHI value.
llvm-svn: 35821
2007-04-09 16:41:46 +00:00
b28a391a8d
More cosmetic changes.
...
llvm-svn: 35820
2007-04-09 16:21:29 +00:00
88bc2c6f82
Only cosmetic changes. Zero functionality Change.
...
llvm-svn: 35819
2007-04-09 16:11:48 +00:00
a87c9f6114
Fix PR1304 and Transforms/InstCombine/2007-04-08-SingleEltVectorCrash.ll
...
llvm-svn: 35792
2007-04-09 01:37:55 +00:00
4ca9cbb170
Eliminate useless insertelement instructions. This implements
...
Transforms/InstCombine/vec_insertelt.ll and fixes PR1286.
We now compile the code from that bug into:
_foo:
movl 4(%esp), %eax
movdqa (%eax), %xmm0
movl 8(%esp), %ecx
psllw (%ecx), %xmm0
movdqa %xmm0, (%eax)
ret
instead of:
_foo:
subl $4, %esp
movl %ebp, (%esp)
movl %esp, %ebp
movl 12(%ebp), %eax
movdqa (%eax), %xmm0
#IMPLICIT_DEF %eax
pinsrw $2, %eax, %xmm0
xorl %ecx, %ecx
pinsrw $3, %ecx, %xmm0
pinsrw $4, %eax, %xmm0
pinsrw $5, %ecx, %xmm0
pinsrw $6, %eax, %xmm0
pinsrw $7, %ecx, %xmm0
movl 8(%ebp), %eax
movdqa (%eax), %xmm1
psllw %xmm0, %xmm1
movdqa %xmm1, (%eax)
movl %ebp, %esp
popl %ebp
ret
woo :)
llvm-svn: 35788
2007-04-09 01:11:16 +00:00
ae39ca037a
Cleanup some from my DomSet-removal changes. Add a new
...
isReachableFromEntry
test to ETForest to factor a common test out of code.
llvm-svn: 35786
2007-04-09 00:52:49 +00:00
aa8ad10c2f
Fix a typo that broke SimplifyLibCalls/SPrintF.ll (pr1315)
...
llvm-svn: 35768
2007-04-08 18:11:26 +00:00
c8d3788f71
reenable this xform, whoops :)
...
llvm-svn: 35765
2007-04-08 08:01:49 +00:00
7621a031d8
Fix regression on Instcombine/apint-or2.ll
...
llvm-svn: 35763
2007-04-08 07:55:22 +00:00
1150df9cc4
Generalize the code that handles (A&B)|(A&C) to work where B/C are not constants.
...
Add a new xform to simplify (A&B)|(~A&C). THis implements InstCombine/or2.ll:test1
llvm-svn: 35760
2007-04-08 07:47:01 +00:00
5717981e5d
implement a fixme: move optimizations for fwrite out of fputs into a new
...
fwrite optimizer.
llvm-svn: 35758
2007-04-08 07:00:35 +00:00
e6c64466c7
Remove DominatorSet usage from LoopSimplify. Patch from Owen Anderson.
...
llvm-svn: 35757
2007-04-08 01:04:30 +00:00
182a945fb5
Significantly simplify the clients of GetConstantStringInfo, by having it
...
just return the string itself.
llvm-svn: 35755
2007-04-07 21:58:02 +00:00
08c0b8b3c8
Fix problems in the sprintf optimizer
...
llvm-svn: 35754
2007-04-07 21:17:51 +00:00
bed184cbcf
Change CastToCStr to take a pointer instead of a reference.
...
Fix some miscompilations in fprintf optimizer.
llvm-svn: 35753
2007-04-07 21:04:50 +00:00
898d698d9f
Fix an off-by-one error that broke Prolangs/deriv2 with llc on x86
...
and Prolangs-C/cdecl
llvm-svn: 35749
2007-04-07 20:19:08 +00:00
f7ebea1b9f
Add DomSet back, and revert the changes to LoopSimplify. Apparently the
...
ETForest updating mechanisms don't work as I thought they did. These changes
will be reapplied once the issue is worked out.
llvm-svn: 35741
2007-04-07 18:23:27 +00:00
d4f51a8ae3
Add support for cast instructions.
...
llvm-svn: 35734
2007-04-07 15:48:32 +00:00
8763ba1b88
Completely purge DomSet. This is the (hopefully) final patch for PR1171.
...
llvm-svn: 35731
2007-04-07 07:17:27 +00:00
706e97049d
Completely purge DomSet from LoopSimplify. This is part of the
...
continuing work on PR1171.
llvm-svn: 35730
2007-04-07 06:56:47 +00:00
d03a646f06
BreakCriticalEdges does still preserve DominatorTree.
...
llvm-svn: 35729
2007-04-07 05:57:09 +00:00
b39d9ca902
Expunge DomSet from BreakCriticalEdges. This is part of the continuing
...
work for PR 1171.
llvm-svn: 35728
2007-04-07 05:49:29 +00:00
f095bf3ac4
Expunge DomSet from CodeExtractor. This is part of the continuing work
...
on PR1171.
llvm-svn: 35726
2007-04-07 05:31:27 +00:00
93f541057b
Support NE inequality in ValueRanges.
...
llvm-svn: 35724
2007-04-07 04:49:12 +00:00
910419596e
Expunge a bunch of uses of DomSet from LoopSimplify. Many more remain.
...
This is the beginning of work for PR1171.
llvm-svn: 35720
2007-04-07 04:37:14 +00:00
3bb6de85d1
Cleanup. Refactor out the applying of value ranges to its own method.
...
llvm-svn: 35719
2007-04-07 03:36:51 +00:00
12d44abe0f
Use TargetData to find the size of a type.
...
llvm-svn: 35718
2007-04-07 03:16:12 +00:00
eeb01b41ef
Strengthen icmp snuggling by doing 'compare-or-equal-to' to 'compare'
...
first and then range testing second.
llvm-svn: 35715
2007-04-07 02:30:14 +00:00
f42389ffe5
Add loop rotation pass.
...
llvm-svn: 35714
2007-04-07 01:25:15 +00:00
0f1509511e
fix a miscompilation in printf optimizer.
...
llvm-svn: 35713
2007-04-07 01:18:36 +00:00
6a36d636e9
trunc to bool no longer compares against zero
...
llvm-svn: 35712
2007-04-07 01:03:46 +00:00
e8829aa9dd
cleanups for strlen optimizer
...
llvm-svn: 35711
2007-04-07 01:02:00 +00:00
485b6415b1
Introduce a new ReplaceCallWith method, which simplifies a lot of code.
...
llvm-svn: 35710
2007-04-07 00:42:32 +00:00
6a6c1f1c30
fixes for strcpy optimizer
...
llvm-svn: 35709
2007-04-07 00:26:18 +00:00
f9ee647e86
Fix bugs in strncmp.
...
llvm-svn: 35708
2007-04-07 00:06:57 +00:00
c9ccc30212
fix 3 miscompilations and several compielr crashes in strcmp optimizer.
...
llvm-svn: 35707
2007-04-07 00:01:51 +00:00
39f0bb9670
Fix several nasty bugs in the strchr optimizer, this fixes
...
SimplifyLibCalls/2007-04-06-strchr-miscompile.ll and PR1307
llvm-svn: 35706
2007-04-06 23:38:55 +00:00
56b7fc7768
clean up strcat optimizer, no functionality change.
...
llvm-svn: 35704
2007-04-06 22:59:33 +00:00
9b2b8abd20
rename getConstantStringLength -> GetConstantStringInfo. Make it return
...
the start index of the array as well as the length. No functionality change.
llvm-svn: 35703
2007-04-06 22:54:17 +00:00
3dbe65f80a
implement Transforms/InstCombine/malloc2.ll and PR1313
...
llvm-svn: 35700
2007-04-06 18:57:34 +00:00
1a9a760318
Fix Transforms/GlobalOpt/2007-04-05-Crash.ll
...
llvm-svn: 35689
2007-04-05 21:09:42 +00:00
108083edff
Use a worklist-driven algorithm instead of a recursive one.
...
llvm-svn: 35680
2007-04-05 01:27:02 +00:00
7c2001d014
Prevent transformConstExprCastCall from generating conversions that assert
...
elsewhere.
llvm-svn: 35668
2007-04-04 19:16:42 +00:00
5a1c750f31
Fix 2007-04-04-BadFoldBitcastIntoMalloc.ll
...
llvm-svn: 35665
2007-04-04 16:58:57 +00:00
f01a47c93c
Fix comment.
...
llvm-svn: 35655
2007-04-04 06:42:45 +00:00
e5bbb3cb1a
Fix a bug I introduced with my patch yesterday which broke Qt (I converted
...
some constant exprs to apints).
Thanks to Anton for tracking down a small testcase that triggered this!
llvm-svn: 35633
2007-04-03 23:29:39 +00:00
a74deafb13
reinstate the previous two patches, with a bugfix :)
...
ldecod now passes.
llvm-svn: 35626
2007-04-03 17:43:25 +00:00
7511fa280d
Reverting back to 1.723. The last two commits broke JM (and possibily others) on ARM.
...
llvm-svn: 35620
2007-04-03 08:11:50 +00:00
81e0707552
split some code out into a helper function
...
llvm-svn: 35615
2007-04-03 05:11:24 +00:00
64c764cebc
Split a whole ton of code out of visitICmpInst into visitICmpInstWithInstAndIntCst.
...
llvm-svn: 35614
2007-04-03 04:46:52 +00:00
8b2ec5f506
Fix PR1253 and xor2.ll:test[01]
...
llvm-svn: 35612
2007-04-03 01:47:41 +00:00
f3197a7d53
allow -1 strides to reuse "1" strides.
...
llvm-svn: 35607
2007-04-02 22:51:58 +00:00
9bc8ab100d
1. Make use of APInt operation instead of using ConstantExpr::getXXX.
...
2. Use cheaper APInt methods.
llvm-svn: 35594
2007-04-02 13:45:30 +00:00
56cda95658
Use uint32_t for bitwidth instead of unsigned.
...
llvm-svn: 35593
2007-04-02 08:20:41 +00:00
28e0e4e11e
Pass the type of the store access, not the type of the store, into the
...
target hook. This allows us to codegen a loop as:
LBB1_1: @cond_next
mov r2, #0
str r2, [r0, +r3, lsl #2 ]
add r3, r3, #1
cmn r3, #1
bne LBB1_1 @cond_next
instead of:
LBB1_1: @cond_next
mov r2, #0
str r2, [r0], #+4
add r3, r3, #1
cmn r3, #1
bne LBB1_1 @cond_next
This looks the same, but has one fewer induction variable (and therefore,
one fewer register) live in the loop.
llvm-svn: 35592
2007-04-02 06:34:44 +00:00
9d5aacee92
Wrap long line
...
llvm-svn: 35588
2007-04-02 05:48:58 +00:00
50490d54f2
use more obvious function name.
...
llvm-svn: 35587
2007-04-02 05:42:22 +00:00
b24acc7bee
simplify (x+c)^signbit as (x+c+signbit), pointed out by PR1288. This implements
...
test/Transforms/InstCombine/xor.ll:test28
llvm-svn: 35584
2007-04-02 05:36:22 +00:00
b7b75145f1
reduce use of std::set
...
llvm-svn: 35576
2007-04-02 01:44:59 +00:00
c3748562bd
Various passes before isel split edges and do other CFG-restructuring changes.
...
isel has its own particular features that it wants in the CFG, in order to
reduce the number of times a constant is computed, etc. Make sure that we
clean up the CFG before doing any other things for isel. Doing so can
dramatically reduce the number of split edges and reduce the number of
places that constants get computed. For example, this shrinks
CodeGen/Generic/phi-immediate-factoring.ll from 44 to 37 instructions on X86,
and from 21 to 17 MBB's in the output. This is primarily a code size win,
not a performance win.
This implements CodeGen/Generic/phi-immediate-factoring.ll and PR1296.
llvm-svn: 35575
2007-04-02 01:35:34 +00:00
8fe3cbe6bd
print the type of an inserted IV in -debug mode.
...
llvm-svn: 35563
2007-04-01 22:21:39 +00:00
c3eeb42809
simplify this code, make it work for ap ints
...
llvm-svn: 35561
2007-04-01 20:57:36 +00:00
150f3bbab2
Avoid unnecessary APInt construction.
...
llvm-svn: 35555
2007-04-01 17:13:37 +00:00
6bba6c8143
For PR1297:
...
Support overloaded intrinsics bswap, ctpop, cttz, ctlz.
llvm-svn: 35547
2007-04-01 07:35:23 +00:00
0427799531
Fix InstCombine/2007-03-31-InfiniteLoop.ll
...
llvm-svn: 35536
2007-04-01 05:36:37 +00:00
f2836d17b6
Split the sdisel code munging stuff out into its own opt-pass, CodeGenPrepare.
...
llvm-svn: 35528
2007-03-31 04:06:36 +00:00
82c42284f4
Delete dead code.
...
llvm-svn: 35525
2007-03-31 02:50:26 +00:00
4f16402e0d
Use APInt operators to calculate the carry bits, remove this loop.
...
llvm-svn: 35524
2007-03-31 02:38:39 +00:00
fd28a33031
Make sure the use of ConstantInt::getZExtValue() for shift amount safe.
...
llvm-svn: 35510
2007-03-30 17:20:39 +00:00
b25806fa5f
1. Make sure the use of ConstantInt::getZExtValue() for getting shift
...
amount is safe.
2. Use new method on ConstantInt instead of (? :) operator.
3. Use new method uge() on ConstantInt to simplify codes.
llvm-svn: 35505
2007-03-30 09:29:48 +00:00
5e60a4a6b0
Use APInt operation instead of ConstantExpr::getXX.
...
llvm-svn: 35503
2007-03-30 05:45:18 +00:00
b3a80b1d70
1. Make more use of APInt::getHighBitsSet/getLowBitsSet.
...
2. Let APInt variable do the binary operation stuff instead of using
ConstantExpr::getXXX.
llvm-svn: 35450
2007-03-29 08:15:12 +00:00
444af49cc0
Clean up some codes in InstCombiner::SimplifyDemandedBits().
...
llvm-svn: 35446
2007-03-29 04:45:55 +00:00
a4475575c0
Clean up codes in InstCombiner::SimplifyDemandedBits():
...
1. Line out nested call of APInt::zext/trunc.
2. Make more use of APInt::getHighBitsSet/getLowBitsSet.
3. Use APInt[] operator instead of expression like "APIntVal & SignBit".
llvm-svn: 35444
2007-03-29 02:26:30 +00:00
4961cf1c06
1. Make the APInt variable do the binary operation stuff if possible
...
instead of using ConstantExpr::getXX.
2. Use constant reference to APInt if possible instead of expensive
APInt copy.
llvm-svn: 35443
2007-03-29 01:57:21 +00:00
117477e28b
Avoid unnecessary APInt construction.
...
llvm-svn: 35431
2007-03-28 17:38:21 +00:00
23f7a1c947
1. Make more use of getLowBitsSet/getHighBitsSet.
...
2. Use APInt[] instead of "X & SignBit".
3. Clean up some codes.
4. Make the expression like "ShiftAmt = ShiftAmtC->getZExtValue()" safe.
llvm-svn: 35424
2007-03-28 15:02:20 +00:00
2777a31850
1. Make more use of getLowBitsSet/getHighBitsSet.
...
2. Make the APInt value do the zext/trunc stuff instead of using
ConstantExpr::getZExt().
llvm-svn: 35422
2007-03-28 09:19:01 +00:00
c2d3309b99
Use UnknownBIts[BitWidth-1] instead of UnknownBIts & SignBits.
...
llvm-svn: 35418
2007-03-28 05:15:57 +00:00
18570b1f14
Remove unused APInt variable.
...
llvm-svn: 35414
2007-03-28 03:02:21 +00:00
57e3f7324b
Clean up codes in ComputeMaskedBits():
...
1. Line out nested use of zext/trunc.
2. Make more use of getHighBitsSet/getLowBitsSet.
3. Use APInt[] != 0 instead of "(APInt & SignBit) != 0".
llvm-svn: 35408
2007-03-28 02:19:03 +00:00
a5c18bf798
For PR1280:
...
When converting an add/xor/and triplet into a trunc/sext, only do so if the
intermediate integer type is a bitwidth that the targets can handle.
llvm-svn: 35400
2007-03-28 01:36:16 +00:00
a4ed8a512a
Unbreaks non-debug builds.
...
llvm-svn: 35383
2007-03-27 16:44:48 +00:00
54d5b1b8f8
Implement some minor review feedback.
...
llvm-svn: 35373
2007-03-26 23:58:26 +00:00
441486c172
For PR1271:
...
Fix another incorrectly converted shift mask.
llvm-svn: 35371
2007-03-26 23:45:51 +00:00
4398e242dd
Reduce malloc/free traffic.
...
llvm-svn: 35370
2007-03-26 23:19:29 +00:00
d2602d5054
eliminate use of std::set
...
llvm-svn: 35361
2007-03-26 20:40:50 +00:00
755d0e7ffc
Get better debug output by having modified instructions print both the
...
original and new instruction. A slight performance hit with ostringstream
but it is only for debug.
Also, clean up an uninitialized variable warning noticed in a release build.
llvm-svn: 35358
2007-03-26 17:44:01 +00:00
769a5a8e0b
Get the number of bits to set in a mask correct for a shl/lshr transform.
...
llvm-svn: 35357
2007-03-26 17:18:58 +00:00
50898607a9
For PR1271:
...
Fix SingleSource/Regression/C/2003-05-21-UnionBitFields.c by changing a
getHighBitsSet call to getLowBitsSet call that was incorrectly converted
from the original lshr constant expression.
llvm-svn: 35348
2007-03-26 05:25:00 +00:00
e5866e7b89
Look through bitcast when finding IVs. (Chris' patch really.)
...
llvm-svn: 35347
2007-03-26 03:01:27 +00:00
52830327e9
For PR1271:
...
Remove a use of getLowBitsSet that caused the mask used for replacement of
shl/lshr pairs with an AND instruction to be computed incorrectly. Its not
clear exactly why this is the case. This solves the disappearing shifts
problem, but it doesn't fix Regression/C/2003-05-21-UnionBitFields. It
seems there is more going on.
llvm-svn: 35342
2007-03-25 21:11:44 +00:00
9bf53ffaa2
implement Transforms/InstCombine/cast2.ll:test3 and PR1263
...
llvm-svn: 35341
2007-03-25 20:43:09 +00:00
624766f8a2
Some cleanup from review:
...
* Don't assume shift amounts are <= 64 bits
* Avoid creating an extra APInt in SubOne and AddOne by using -- and ++
* Add another use of getLowBitsSet
* Convert a series of if statements to a switch
llvm-svn: 35339
2007-03-25 19:55:33 +00:00
80263aadf3
Refactor several ConstantExpr::getXXX calls with ConstantInt arguments
...
using the facilities of APInt. While this duplicates a tiny fraction of
the constant folding code, it also makes the code easier to read and
avoids large ConstantExpr overhead for simple, known computations.
llvm-svn: 35335
2007-03-25 05:33:51 +00:00
222d5ebfd2
1. Avoid unnecessary APInt construction if possible.
...
2. Use isStrictlyPositive() instead of isPositive() in two places where
they need APInt value > 0 not only >=0.
llvm-svn: 35333
2007-03-25 05:01:29 +00:00
cd99fbdf3b
Make more uses of getHighBitsSet and get rid of some pointless & of an
...
APInt with its type mask.
llvm-svn: 35325
2007-03-25 04:26:16 +00:00
d8aad61d4d
More APIntification:
...
* Convert the last use of a uint64_t that should have been an APInt.
* Change ComputeMaskedBits to have a const reference argument for the Mask
so that recursions don't cause unneeded temporaries. This causes temps
to be needed in other places (where the mask has to change) but this
change optimizes for the recursion which is more frequent.
* Remove two instances of &ing a Mask with getAllOnesValue. Its not
needed any more because APInt is accurate in its bit computations.
* Start using the getLowBitsSet and getHighBits set methods on APInt
instead of shifting. This makes it more clear in the code what is
going on.
llvm-svn: 35321
2007-03-25 02:03:12 +00:00
3a8248f79d
fix a regression on vector or instructions.
...
llvm-svn: 35314
2007-03-24 23:56:43 +00:00
e9ebd3f6ba
Make some codes more efficient.
...
llvm-svn: 35297
2007-03-24 15:34:37 +00:00
a962d18774
For PR1205:
...
Convert some calls to ConstantInt::getZExtValue() into getValue() and
use APInt facilities in the subsequent computations.
llvm-svn: 35294
2007-03-24 00:42:08 +00:00
959a21d3dc
For PR1205:
...
* APIntify visitAdd and visitSelectInst
* Remove unused uint64_t versions of utility functions that have been
replaced with APInt versions.
This completes most of the changes for APIntification of InstCombine. This
passes llvm-test and llvm/test/Transforms/InstCombine/APInt.
Patch by Zhou Sheng.
llvm-svn: 35287
2007-03-23 21:24:59 +00:00
6d39206bc2
For PR1205:
...
APIntify visitDiv, visitMul and visitRem.
Patch by Zhou Sheng.
llvm-svn: 35283
2007-03-23 20:05:17 +00:00
12b89cc148
switch AddReachableCodeToWorklist from being recursive to being iterative.
...
llvm-svn: 35282
2007-03-23 19:17:18 +00:00
6274c72ee1
For PR1205:
...
APIntify several utility functions supporting logical operators and shift
operators.
Patch by Zhou Sheng.
llvm-svn: 35281
2007-03-23 18:46:34 +00:00
0900993ebc
Make the "KnownZero ^ TypeMask" computation just once.
...
llvm-svn: 35276
2007-03-23 03:13:21 +00:00
755f04b5d7
Simplify the code.
...
llvm-svn: 35275
2007-03-23 02:39:25 +00:00
b722f2b110
For PR1205:
...
APInt support for logical operators in visitAnd, visitOr, and visitXor.
Patch by Zhou Sheng.
llvm-svn: 35273
2007-03-22 22:19:58 +00:00
4154e732e6
For PR1205:
...
* APIntify commonIntCastTransforms
* APIntify visitTrunc
* APIntify visitZExt
Patch by Zhou Sheng.
llvm-svn: 35271
2007-03-22 20:56:53 +00:00
c3e3b8a32f
For PR1205:
...
* Re-enable the APInt version of MaskedValueIsZero.
* APIntify the Comput{Un}SignedMinMaxValuesFromKnownBits functions
* APIntify visitICmpInst.
llvm-svn: 35270
2007-03-22 20:36:03 +00:00
dcb291faa4
Change uses of Function::front to Function::getEntryBlock for readability.
...
llvm-svn: 35265
2007-03-22 16:38:57 +00:00
b0da7ed9c8
Fix broken optimization disabled by a logic bug.
...
Analyze GEPs. If the indices are all zero, transfer whether the pointer is
known to be not null through the GEP.
Add a few more cases for xor and shift instructions.
llvm-svn: 35257
2007-03-22 02:02:51 +00:00
f40711637f
For PR1248:
...
* Fix some indentation and comments in InsertRangeTest
* Add an "IsSigned" parameter to AddWithOverflow and make it handle signed
additions. Also, APIntify this function so it works with any bitwidth.
* For the icmp pred ([us]div %X, C1), C2 transforms, exit early if the
div instruction's RHS is zero.
* Finally, for icmp pred (sdiv %X, C1), -C2, fix an off-by-one error. The
HiBound needs to be incremented in order to get the range test correct.
llvm-svn: 35247
2007-03-21 23:19:50 +00:00
bacf4acf65
do not share old induction variables when this would result in invalid
...
instructions (that would have to be split later)
llvm-svn: 35227
2007-03-20 21:54:54 +00:00
1baf5c84ab
Fix some VC++ warnings.
...
llvm-svn: 35224
2007-03-20 20:43:18 +00:00
1758cb50de
LoopSimplify::FindPHIToPartitionLoops()
...
Use ETForest instead of DominatorSet.
llvm-svn: 35221
2007-03-20 20:18:12 +00:00
b3949340c8
Simplify isHighOnes().
...
llvm-svn: 35211
2007-03-20 12:49:06 +00:00
e3a02be5f1
use types of loads and stores, not address, in CheckForIVReuse
...
llvm-svn: 35197
2007-03-20 00:47:50 +00:00
6682721316
Make isOneBitSet faster by using APInt::isPowerOf2. Thanks Chris.
...
llvm-svn: 35194
2007-03-20 00:16:52 +00:00
cc031a43aa
APIntify the isHighOnes utility function.
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llvm-svn: 35190
2007-03-19 21:29:50 +00:00
ef599b0786
Implement isMaxValueMinusOne in terms of APInt instead of uint64_t.
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Patch by Sheng Zhou.
llvm-svn: 35188
2007-03-19 21:10:28 +00:00
3b93db72b4
Implement isMinValuePlusOne using facilities of APInt instead of uint64_t
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Patch by Zhou Sheng.
llvm-svn: 35187
2007-03-19 21:08:07 +00:00
129a86792d
Implement isOneBitSet in terms of APInt::countPopulation.
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llvm-svn: 35186
2007-03-19 21:04:43 +00:00
450434ed65
1. Use APInt::getSignBit to reduce clutter (patch by Sheng Zhou)
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2. Replace uses of the "isPositive" utility function with APInt::isPositive
llvm-svn: 35185
2007-03-19 20:58:18 +00:00
03c31d5bb0
Remove a redundant clause in an if statement.
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Patch by Sheng Zhou.
llvm-svn: 35184
2007-03-19 20:47:50 +00:00
9c62db7c8c
fix ScalarRepl/2007-03-19-CanonicalizeMemcpy.ll
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llvm-svn: 35169
2007-03-19 18:25:57 +00:00
877a3b424d
implement the next chunk of SROA with memset/memcpy's of aggregates. This
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implements Transforms/ScalarRepl/memset-aggregate-byte-leader.ll
llvm-svn: 35150
2007-03-19 00:16:43 +00:00
db204ecfbc
Clean up this code and fix subtract miscompile.
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llvm-svn: 35146
2007-03-18 22:58:46 +00:00
0741842b3b
Implement InstCombine/and-xor-merge.ll:test[12].
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Rearrange some code to simplify it now that shifts are binops
llvm-svn: 35145
2007-03-18 22:51:34 +00:00
17d20fd41e
Propagate ValueRanges across equality.
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Add some more micro-optimizations: x * 0 = 0, a - x = a --> x = 0.
llvm-svn: 35138
2007-03-18 01:09:32 +00:00
22f436da42
Silence warning
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llvm-svn: 35137
2007-03-17 14:48:06 +00:00
4f73de2b4e
Add more comments and update to new asm syntax.
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Add new micro-optimizations.
Add icmp predicate snuggling. Given %x ULT 4, "icmp ugt %x, 2" becomes
"icmp eq %x, 3". This doesn't apply in any non-trivial cases yet due to missing
support for NE values in ValueRanges.
llvm-svn: 35119
2007-03-16 02:37:39 +00:00
d8c645b0ba
ShiftAmt might equal to zero. Handle this situation.
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llvm-svn: 35094
2007-03-14 09:07:33 +00:00
b912844554
Enable KnownZero/One.clear().
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llvm-svn: 35093
2007-03-14 03:21:24 +00:00
b5eb932c93
Correct type info for isLegalAddressImmediate() check.
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llvm-svn: 35086
2007-03-13 20:34:37 +00:00
d1bce956b4
ifdef out some dead code.
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Fix PR1244 and Transforms/InstCombine/2007-03-13-CompareMerge.ll
llvm-svn: 35082
2007-03-13 14:27:42 +00:00
ebe634e662
For expression like
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"APInt::getAllOnesValue(ShiftAmt).zextOrCopy(BitWidth)",
to handle ShiftAmt == BitWidth situation, use zextOrCopy() instead of
zext().
llvm-svn: 35080
2007-03-13 06:40:59 +00:00
af4341d441
In APInt version ComputeMaskedBits():
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1. Ensure VTy, KnownOne and KnownZero have same bitwidth.
2. Make code more efficient.
llvm-svn: 35078
2007-03-13 02:23:10 +00:00
720acdfb31
Use new TargetLowering addressing modes hooks.
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llvm-svn: 35072
2007-03-12 23:27:37 +00:00
00227417d2
Unbreak VC++ build. Do not use identifiers starting with _ as they are reserved and
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can collide with system defined names. Windows defines _BB, for example.
llvm-svn: 35066
2007-03-12 17:56:27 +00:00
1791f23803
Add an APInt version of SimplifyDemandedBits.
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Patch by Zhou Sheng.
llvm-svn: 35064
2007-03-12 17:25:59 +00:00
d9281784be
Add an APInt version of ShrinkDemandedConstant.
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Patch by Zhou Sheng.
llvm-svn: 35063
2007-03-12 17:15:10 +00:00
be171ee5cd
Avoid to assert on "(KnownZero & KnownOne) == 0".
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llvm-svn: 35062
2007-03-12 16:54:56 +00:00
b3e00c4656
In function ComputeMaskedBits():
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1. Replace getSignedMinValue() with getSignBit() for better code readability.
2. Replace APIntOps::shl() with operator<<= for convenience.
3. Make APInt construction more effective.
llvm-svn: 35060
2007-03-12 05:44:52 +00:00
d9bd0bc3e2
Add value ranges. Currently inefficient in both execution time and
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optimization power.
llvm-svn: 35058
2007-03-10 18:12:48 +00:00
8a6dc102d3
Use range tests in LowerSwitch, where possible
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llvm-svn: 35057
2007-03-10 16:46:28 +00:00
5f50e61d52
Remove dead comments.
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llvm-svn: 35053
2007-03-09 23:41:03 +00:00
bda1250624
Avoid recursion. Use iterative algorithm for RenamePass().
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llvm-svn: 35052
2007-03-09 23:39:14 +00:00
Chris Lattner