Chris Lattner
ae5d51c9c9
Fix Transforms/ScalarRepl/2006-10-23-PointerUnionCrash.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31151 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-24 06:26:32 +00:00
Chris Lattner
7d09784d3f
move single basic blocks that are neither fallen into nor fall out of into
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a place more useful. In particular, if we can put them in a place where code
will be able to fall into it, do so. Otherwise, put it in a place it can fall
through into a successor. Otherwise, if preventing a fallthrough, move to the
end of the function, out of the way.
This deletes several hundred unconditional branches from spass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31149 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-24 01:12:32 +00:00
Chris Lattner
e90c53756e
Add intrinsics for the rest of the DCB* instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31148 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-24 01:08:42 +00:00
Chris Lattner
ef2aa193d6
Revert back to r1.21, which was the last revision of predsimplify that
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passes llvm-gcc bootstrap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31146 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-24 00:36:21 +00:00
Chris Lattner
c585a3f62a
add moveBefore/moveAfter helper methods
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31145 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-24 00:02:26 +00:00
Chris Lattner
a4bcfe12d1
Enable tail merging by default.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31140 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 22:10:12 +00:00
Rafael Espindola
c391d16b49
implement STRB and STRH
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31138 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 20:34:27 +00:00
Rafael Espindola
d8ed7f8cde
expand ISD::MEMSET
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31137 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 20:08:22 +00:00
Andrew Lenharth
12711dfb16
Make these hack flags hidden, like other dsa hack flags
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31136 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 19:55:24 +00:00
Andrew Lenharth
72be6e63b1
Revert the aggressive inlining for now, it doesn't handle external correctly
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31135 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 19:53:37 +00:00
Chris Lattner
ddaaa37487
Handle fallout from the recent branch-on-undef changes. This fixes
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Prolangs-C/agrep and SCCP/2006-10-23-IPSCCP-Crash.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31132 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 18:57:02 +00:00
Chris Lattner
b354343af7
Minor tweak. Instead of generating:
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movl 32(%esp), %eax
cmpl $1, %eax
je LBB1_1 #bb
LBB1_4: #entry
cmpl $2, %eax
je LBB1_2 #bb2
jmp LBB1_3 #UnifiedReturnBlock
LBB1_1: #bb
notice that we would miss the fall through and emit this instead:
movl 32(%esp), %eax
cmpl $2, %eax
je LBB1_2 #bb2
LBB1_4: #entry
cmpl $1, %eax
jne LBB1_3 #UnifiedReturnBlock
LBB1_1: #bb
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31130 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 18:38:22 +00:00
Jim Laskey
66ebf0973d
More complete solution to deleting blocks and debug info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31129 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 14:56:37 +00:00
Jim Laskey
978b35e502
[SU]int update - inactive code may get activated someday
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31128 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 14:39:22 +00:00
Nick Lewycky
c17229d591
Remove the Backwards operation. Resolving now works at the time when a
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property is added by running through the list of uses of the value and
adding resolved properties to the property set.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31126 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-23 01:56:02 +00:00
Chris Lattner
b2e806eecd
Fix phi node updating for switches lowered to linear sequences of branches.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31125 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 23:00:53 +00:00
Chris Lattner
e236ac64a2
disable this code for now, it's not yet safely updating phi nodes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31124 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 22:47:10 +00:00
Nick Lewycky
7e189d095e
Fix similar missing optimization opportunity in XOR.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31123 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 22:22:58 +00:00
Chris Lattner
ecb8d06356
this part implemented.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31122 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 21:40:12 +00:00
Nick Lewycky
92a8b71dc1
Whoops! Add missing NULL check.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31121 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 21:38:24 +00:00
Anton Korobeynikov
1a3ecbb4a6
Do section switching right way for Mingw\Cygwin and Linux.
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This will allow (after llvm-gcc linkage fix) more dummy tests using
libstdc++ to pass on mingw :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31120 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 21:37:13 +00:00
Chris Lattner
d2c1d2200b
Implement PR964 and Regression/CodeGen/Generic/SwitchLowering.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31119 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 21:36:53 +00:00
Nick Lewycky
5062250f36
Handle "if ((x|y) != 0)" for ints like we do for bools. Fixes missed
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optimization opportunity pointed out by Chris Lattner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31118 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 21:36:41 +00:00
Nick Lewycky
802fe27d3e
AllocaInst can't return a null pointer. Fixes missed optimization
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opportunity pointed out by Andrew Lewycky.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31115 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 19:53:27 +00:00
Chris Lattner
32b1e87f11
Add a workaround for PR962, disabling the more aggressive form of this
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transformation. This speeds up a C++ app 2.25x.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31113 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 18:42:26 +00:00
Reid Spencer
2cb46e18cb
Don't generate a prototype for _setjmp. At least on Linux, this function
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has a different prototype than the one #included from <setjmp.h>. This
patch fixes siod and a number of other test cases on Linux that were
failing the CBE because of this _setjmp issue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31112 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 09:58:21 +00:00
Reid Spencer
21be86535b
Regenerate.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31111 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 07:03:43 +00:00
Reid Spencer
fd6131b5a8
Remove unneeded CHECK_FOR_ERROR invocations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31110 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 07:03:09 +00:00
Chris Lattner
1ae022f647
regenerate
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31109 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 06:08:13 +00:00
Chris Lattner
10b271152a
change keyword to datalayout
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31108 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 06:07:41 +00:00
Chris Lattner
d2f9e609aa
Change keyword to datalayout
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31107 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 06:06:56 +00:00
Chris Lattner
d2d86703f0
3 Changes:
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1. Better document what is going on here.
2. Only hack on one branch per iteration, making the results less conservative.
3. Handle the problematic case by marking edges executable instead of by
playing with value lattice states. This is far less pessimistic, and fixes
SCCP/ipsccp-gvar.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31106 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-22 05:59:17 +00:00
Chris Lattner
4bc135e93b
don't break infinite loops
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31102 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 06:11:43 +00:00
Chris Lattner
7c4fe259f8
Implement support for branch reversal, fix a bug in branch analysis.
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This provides stuff like:
cmpw cr0, r15, r29
mr r14, r15
- bge cr0, LBB3_111 ;bb656
- b LBB3_90 ;bb501
+ blt cr0, LBB3_90 ;bb501
LBB3_111: ;bb656
lwz r18, 68(r1)
which is particularly good for dispatch group formation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31101 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 06:03:11 +00:00
Chris Lattner
a2d799531a
Use branch reversal to do stuff like this:
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call L_strcmp$stub
testl %eax, %eax
- jne LBB26_208 #cond_true6020
- jmp LBB26_227 #bb7119
+ je LBB26_227 #bb7119
LBB26_208: #cond_true6020
movl $l31_str14, 4(%esp)
testl %eax, %eax
- jne LBB26_704 #cond_true13042
- jmp LBB26_713 #bb13151
+ je LBB26_713 #bb13151
LBB26_704: #cond_true13042
movl $_str52, 4(%esp)
cmpl 76(%ecx), %eax
- jge LBB26_1628 #cond_false63.i.i
- jmp LBB26_1769 #_Z8makeGridP13mrSurfaceListidiidd.exit.i
+ jl LBB26_1769 #_Z8makeGridP13mrSurfaceListidiidd.exit.i
LBB26_1628: #cond_false63.i.i
movl $0, 48964(%esp)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31100 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 05:54:00 +00:00
Chris Lattner
9cd6875917
Implement support for branch condition reversal.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31099 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 05:52:40 +00:00
Chris Lattner
2d47bd937c
Transform code like:
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jle FOO
jmp BAR
BAR:
into:
jle FOO
BAR:
... whoa!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31098 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 05:43:30 +00:00
Chris Lattner
879d09cf13
Simplify code, no functionality change
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31097 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 05:42:09 +00:00
Chris Lattner
54108068b7
implement support for inserting a cond branch
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31096 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 05:36:13 +00:00
Chris Lattner
34a84ac81c
allow insertion of a conditional branch with fall-through
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31095 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 05:34:23 +00:00
Chris Lattner
386e29065d
Three changes:
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1. Remove a bunch of ifdef'd code.
2. When a block just contains an uncond branch, change all blocks branching
to it to jump to the destination instead.
3. If branch analysis tells us some edges in the machinecfg are not actually
possible, remove them.
#2 triggers a suprisingly large number of times.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31094 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 05:08:28 +00:00
Chris Lattner
2a445add12
update assert message
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31093 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 04:42:29 +00:00
Chris Lattner
12143054aa
Add an experimental cross-jumping implementation.
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This is currently disabled by default and limited in several ways, but does
have a positive effect.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31090 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21 00:47:49 +00:00
Chris Lattner
8ace2cd034
implement MachineOperand::isIdenticalTo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31088 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20 22:39:59 +00:00
Chris Lattner
9dcbf0dedc
llvm-extract should remove module-level asm
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31086 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20 21:35:41 +00:00
Chris Lattner
5860715e9d
bugfix
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31074 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20 20:44:34 +00:00
Chris Lattner
6734bffe24
Fix an ugly problem in SCCP. This fixes Benchmarks/Misc-C++/mandel-text.cpp
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31073 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20 20:19:08 +00:00
Chris Lattner
87d8429506
Fix miscompilation of MallocBench/espresso which code review pointed out
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but apparently didn't make it into the final patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31070 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20 18:20:21 +00:00
Chris Lattner
34ab4d45d2
Make flag and chain edges visually distinguishable from value edges in DOT
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output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31067 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20 18:06:09 +00:00
Chris Lattner
7fbe9723e3
Implement branch analysis/xform hooks required by the branch folding pass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31065 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20 17:42:20 +00:00