Misha Brukman
98eb6264d4
Assert if deleting BasicBlock before removing it from Function.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12983 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16 15:47:21 +00:00
Chris Lattner
006118fe8c
Fix some of the strange CBE-only failures that happened last night.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12980 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16 06:03:17 +00:00
Chris Lattner
e1f0cf179f
Make sure to check for a very bad class of errors: an instruction
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that does not dominate all of its users, but is in the same basic block as
its users. This class of error is what caused the mysterious CBE only
failures last night.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12979 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16 05:51:47 +00:00
Chris Lattner
bf3d2e2683
Bugpoint was not correctly capturing stderr! This caused it to "find" bugs
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that didn't exist, missing the ones that do :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12978 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16 05:35:58 +00:00
Chris Lattner
cd01ae5c70
Fix Inline/2004-04-15-InlineDeletesCall.ll
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Basically we were using SimplifyCFG as a huge sledgehammer for a simple
optimization. Because simplifycfg does so many things, we can't use it
for this purpose.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12977 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16 05:17:59 +00:00
Chris Lattner
d244057a48
Fix a bug in the previous checkin: if the exit block is not the same as
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the back-edge block, we must check the preincremented value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12968 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-15 20:26:22 +00:00
Brian Gaeke
b75a316758
Give SparcV9CodeEmitter a head-of-file comment and a PassName.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12967 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-15 20:23:13 +00:00
Misha Brukman
7a46e4c62b
Don't use invalid HTML in a doxygen comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12962 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-15 15:23:45 +00:00
Chris Lattner
59fdaeeae8
Change the canonical induction variable that we insert.
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Instead of producing code like this:
Loop:
X = phi 0, X2
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X2 = X + 1
if (X != N-1) goto Loop
We now generate code that looks like this:
Loop:
X = phi 0, X2
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X2 = X + 1
if (X2 != N) goto Loop
This has two big advantages:
1. The trip count of the loop is now explicit in the code, allowing
the direct implementation of Loop::getTripCount()
2. This reduces register pressure in the loop, and allows X and X2 to be
put into the same register.
As a consequence of the second point, the code we generate for loops went
from:
.LBB2: # no_exit.1
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mov %EDI, %ESI
inc %EDI
cmp %ESI, 2
mov %ESI, %EDI
jne .LBB2 # PC rel: no_exit.1
To:
.LBB2: # no_exit.1
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inc %ESI
cmp %ESI, 3
jne .LBB2 # PC rel: no_exit.1
... which has two fewer moves, and uses one less register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12961 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-15 15:21:43 +00:00
Chris Lattner
92020faa2c
add some helpful methods. Rearrange #includes to proper order
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12960 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-15 15:16:02 +00:00
Chris Lattner
0a7f98c80d
Factor a bunch of classes out into a public header
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12958 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-15 15:07:24 +00:00
Chris Lattner
0aa84fdd04
Unbreak the build
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12956 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-15 14:17:43 +00:00
Chris Lattner
e9fc96e7cc
Implement a FIXME: if we're going to insert a cast, we might as well only
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insert it once!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12955 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 22:01:22 +00:00
John Criswell
53b54be5fc
Remove code to adjust the iterator for llvm.readio and llvm.writeio.
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The iterator is pointing at the next instruction which should not disappear
when doing the load/store replacement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12954 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 21:27:56 +00:00
Brian Gaeke
8121fcd260
Fix typo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12953 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 21:21:56 +00:00
Chris Lattner
16011e6201
This is a trivial tweak to the addrec insertion code: insert the increment
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at the bottom of the loop instead of the top. This reduces the number of
overlapping live ranges a lot, for example, eliminating a spill in an important
loop in 183.equake with linear scan.
I still need to make the exit comparison of the loop use the post-incremented
version of this variable, but this is an easy first step.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12952 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 21:11:25 +00:00
Brian Gaeke
50872d5385
Add a TargetData to the PassManager regardless of the TargetMachine.
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This should unbreak the Sparc JIT again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12949 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 17:45:52 +00:00
John Criswell
71c887d688
Remove the return type check for llvm.readio. This check is done for all
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functions and is not needed here.
Simplify the pointer type check per Chris's suggestions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12945 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 15:06:48 +00:00
John Criswell
17f64258cf
Added code to verify that llvm.readio's pointer argument returns something
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that matches its return type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12944 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 14:49:36 +00:00
John Criswell
994a765e5c
Finish adding the llvm.readio and llvm.writeio intrinsics.
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Sorry these didn't get in yesterday.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12942 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 13:46:52 +00:00
Chris Lattner
d9955aaa61
ADd a trivial instcombine: load null -> null
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12940 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 03:28:36 +00:00
Chris Lattner
098e945fbd
This is the real fix for Codegen/X86/2004-04-13-FPCMOV-Crash.llx which works
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even when the "optimization" I added before is turned off. It generates this
extremely pointless code:
test:
fld QWORD PTR [%ESP + 4]
mov %AL, 0
test %AL, %AL
fcmove %ST(0), %ST(0)
ret
Good thing the optimizer will have removed this before code generation
anyway. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12939 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 02:42:32 +00:00
John Criswell
e5a4c15da6
Added support for the llvm.readio and llvm.writeio intrinsics.
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On x86, memory operations occur in-order, so these are just lowered into
volatile loads and stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12936 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 22:13:14 +00:00
Chris Lattner
82c5a9990f
Implement a small optimization, which papers over the problem in
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X86/2004-04-13-FPCMOV-Crash.llx
A more robust fix is to follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12935 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 21:56:09 +00:00
Chris Lattner
58b7b08ad7
Add SCCP support for constant folding calls, implementing:
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test/Regression/Transforms/SCCP/calltest.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12921 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 19:43:54 +00:00
Chris Lattner
25b8390bf2
Add a simple call constant propagation interface.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12919 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 19:28:52 +00:00
Chris Lattner
4647b7cd69
Constant propagation should remove the dead instructions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12917 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 19:28:20 +00:00
Brian Gaeke
ef8e48aae0
I don't think we have to have 4 extra allocated (but unused) bytes on the stack.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12905 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 18:28:37 +00:00
Brian Gaeke
3d11e8a6d3
I started working on casts, but I don't have anything compilable yet.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12903 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 18:27:46 +00:00
Chris Lattner
87e18deabc
Emit the immediate form of in/out when possible.
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Fix several bugs in the intrinsics:
1. Make sure to copy the input registers before the instructions that use them
2. Make sure to copy the value returned by 'in' out of EAX into the register
it is supposed to be in.
This fixes assertions when using in/out and linear scan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12896 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 17:20:37 +00:00
Chris Lattner
440bbc257e
Add immediate forms of in/out. Use let to shorten lines
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12895 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 17:19:31 +00:00
Chris Lattner
e47f4ff9f6
Add support for new instruction type
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12894 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 17:18:51 +00:00
Chris Lattner
266538350a
Add support for the printImplicitDefsBefore flag
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12893 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 17:18:39 +00:00
Chris Lattner
4b66242c54
Fix LoopSimplify/2004-04-13-LoopSimplifyUpdateDomFrontier.ll
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LoopSimplify was not updating dominator frontiers correctly in some cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12890 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 16:23:25 +00:00
Chris Lattner
1f62f82b05
Refactor code a bit to make it simpler and eliminate the goto
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12888 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 15:21:18 +00:00
Chris Lattner
529b28da45
This patch addresses PR35: Loop simplify should reconstruct nested loops.
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This is fairly straight-forward, but was a real nightmare to get just
perfect. aarg. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12884 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-13 05:05:33 +00:00
Brian Gaeke
5f0b51547c
We don't need to insert TargetData into the PassManager here.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12874 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 21:46:31 +00:00
Alkis Evlogimenos
6e4d0d6546
Fix bug introduced in previous commit.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12872 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 20:26:39 +00:00
Chris Lattner
46758a894f
Add some methods that are useful for updating loop information.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12871 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 20:26:17 +00:00
Alkis Evlogimenos
43b61f724e
Correctly compute spill weights
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12869 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 17:39:20 +00:00
Alkis Evlogimenos
e633352fd5
Print def lists a bit more compactly
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12866 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 15:57:58 +00:00
Chris Lattner
ce1a3a292d
Actually update the call graph as the inliner changes it. This allows us to
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execute other CallGraphSCCPasses after the inliner without crashing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12861 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 05:37:29 +00:00
Chris Lattner
b81c021f14
Change the call graph class to have TWO external nodes, making call graph
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SCC passes much more useful. In particular, this should fix the incredibly
stupid missed inlining opportunities that the inliner suffered from.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12860 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 05:36:32 +00:00
Chris Lattner
7512c08bfd
Hrm, operator new and new[] do not belong here. We should not CSE them! :)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12859 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 05:16:42 +00:00
Chris Lattner
1708d12916
Add support for removing invoke instructions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12858 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 05:15:13 +00:00
Chris Lattner
85eb157d96
Stop printing Function*
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12857 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 04:06:56 +00:00
Chris Lattner
d08ddd3300
Simplify code a bit, and be sure to mark the external node as potentially throwing
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12856 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 04:06:38 +00:00
Chris Lattner
133dbb1285
Fix issues that the local allocator has dealing with instructions that implicitly use ST(0)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12855 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 03:02:48 +00:00
Chris Lattner
284b496aae
No really, fix printing for LLC. I gotta get a way for CVS to whine at me if
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I have unsaved emacs buffers, geeze...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12854 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 01:52:04 +00:00
Chris Lattner
2fc83a5ba6
Correct printing for LLC and the encoding for the JIT
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12853 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12 01:50:04 +00:00