Chris Lattner
3c85eef81a
Make the tail duplication threshold accessible from the command line instead of hardcoded
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13025 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18 00:52:43 +00:00
Chris Lattner
20aa098ba6
If the loop executes a constant number of times, try a bit harder to replace
...
exit values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13018 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17 18:44:09 +00:00
Chris Lattner
4f1134e51a
Fix a HUGE pessimization on X86. The indvars pass was taking this
...
(familiar) function:
int _strlen(const char *str) {
int len = 0;
while (*str++) len++;
return len;
}
And transforming it to use a ulong induction variable, because the type of
the pointer index was left as a constant long. This is obviously very bad.
The fix is to shrink long constants in getelementptr instructions to intptr_t,
making the indvars pass insert a uint induction variable, which is much more
efficient.
Here's the before code for this function:
int %_strlen(sbyte* %str) {
entry:
%tmp.13 = load sbyte* %str ; <sbyte> [#uses=1]
%tmp.24 = seteq sbyte %tmp.13, 0 ; <bool> [#uses=1]
br bool %tmp.24, label %loopexit, label %no_exit
no_exit: ; preds = %entry, %no_exit
*** %indvar = phi uint [ %indvar.next, %no_exit ], [ 0, %entry ] ; <uint> [#uses=2]
*** %indvar = phi ulong [ %indvar.next, %no_exit ], [ 0, %entry ] ; <ulong> [#uses=2]
%indvar1 = cast ulong %indvar to uint ; <uint> [#uses=1]
%inc.02.sum = add uint %indvar1, 1 ; <uint> [#uses=1]
%inc.0.0 = getelementptr sbyte* %str, uint %inc.02.sum ; <sbyte*> [#uses=1]
%tmp.1 = load sbyte* %inc.0.0 ; <sbyte> [#uses=1]
%tmp.2 = seteq sbyte %tmp.1, 0 ; <bool> [#uses=1]
%indvar.next = add ulong %indvar, 1 ; <ulong> [#uses=1]
%indvar.next = add uint %indvar, 1 ; <uint> [#uses=1]
br bool %tmp.2, label %loopexit.loopexit, label %no_exit
loopexit.loopexit: ; preds = %no_exit
%indvar = cast uint %indvar to int ; <int> [#uses=1]
%inc.1 = add int %indvar, 1 ; <int> [#uses=1]
ret int %inc.1
loopexit: ; preds = %entry
ret int 0
}
Here's the after code:
int %_strlen(sbyte* %str) {
entry:
%inc.02 = getelementptr sbyte* %str, uint 1 ; <sbyte*> [#uses=1]
%tmp.13 = load sbyte* %str ; <sbyte> [#uses=1]
%tmp.24 = seteq sbyte %tmp.13, 0 ; <bool> [#uses=1]
br bool %tmp.24, label %loopexit, label %no_exit
no_exit: ; preds = %entry, %no_exit
*** %indvar = phi uint [ %indvar.next, %no_exit ], [ 0, %entry ] ; <uint> [#uses=3]
%indvar = cast uint %indvar to int ; <int> [#uses=1]
%inc.0.0 = getelementptr sbyte* %inc.02, uint %indvar ; <sbyte*> [#uses=1]
%inc.1 = add int %indvar, 1 ; <int> [#uses=1]
%tmp.1 = load sbyte* %inc.0.0 ; <sbyte> [#uses=1]
%tmp.2 = seteq sbyte %tmp.1, 0 ; <bool> [#uses=1]
%indvar.next = add uint %indvar, 1 ; <uint> [#uses=1]
br bool %tmp.2, label %loopexit, label %no_exit
loopexit: ; preds = %entry, %no_exit
%len.0.1 = phi int [ 0, %entry ], [ %inc.1, %no_exit ] ; <int> [#uses=1]
ret int %len.0.1
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13016 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17 18:16:10 +00:00
Chris Lattner
f50af088f1
Even if there are not any induction variables in the loop, if we can compute
...
the trip count for the loop, insert one so that we can canonicalize the exit
condition.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13015 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17 18:08:33 +00:00
Chris Lattner
657253119e
Fix some really nasty dominance bugs that were exposed by my patch to
...
make the verifier more strict. This fixes building zlib
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13002 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16 18:08:07 +00:00
Chris Lattner
006118fe8c
Fix some of the strange CBE-only failures that happened last night.
...
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
d244057a48
Fix a bug in the previous checkin: if the exit block is not the same as
...
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
Chris Lattner
59fdaeeae8
Change the canonical induction variable that we insert.
...
Instead of producing code like this:
Loop:
X = phi 0, X2
...
X2 = X + 1
if (X != N-1) goto Loop
We now generate code that looks like this:
Loop:
X = phi 0, X2
...
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
...
mov %EDI, %ESI
inc %EDI
cmp %ESI, 2
mov %ESI, %EDI
jne .LBB2 # PC rel: no_exit.1
To:
.LBB2: # no_exit.1
...
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
d9955aaa61
ADd a trivial instcombine: load null -> null
...
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
58b7b08ad7
Add SCCP support for constant folding calls, implementing:
...
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
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
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
fbede52af4
Fix a bug in my select transformation
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12826 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11 01:39:19 +00:00
Chris Lattner
adb7c0de39
Update the value numbering interface.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12824 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 22:33:34 +00:00
Chris Lattner
d76956d444
Implement InstCombine/select.ll:test13*
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12821 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 22:21:27 +00:00
Chris Lattner
66331a4e33
Implement InstCombine/add.ll:test20
...
Canonicalize add of sign bit constant into a xor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12819 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 22:01:55 +00:00
Chris Lattner
38e66bd9d1
Rewrite the GCSE pass to be *substantially* simpler, a bit more efficient,
...
and a bit more powerful
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12817 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 21:11:11 +00:00
Chris Lattner
326c0f3013
Fix spurious warning in release mode
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12816 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 19:15:56 +00:00
Chris Lattner
a5f4103931
Simplify code a bit, and fix a bug that was breaking perlbmk
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12814 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 18:06:21 +00:00
Chris Lattner
562cb66b84
Fix a bug in my checkin last night that was breaking programs using invoke.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12813 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 16:53:29 +00:00
Chris Lattner
27c694bacb
Fix previous patch
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12811 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 07:27:48 +00:00
Chris Lattner
17177601fb
Correctly update counters
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12810 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 07:02:02 +00:00
Chris Lattner
ede6ac60a5
Simplify code a bit, and use alias analysis to allow us to delete unused
...
call and invoke instructions that are known to not write to memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12807 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10 06:53:09 +00:00
Chris Lattner
e576b91948
Implement select.ll:test12*
...
This transforms code like this:
%C = or %A, %B
%D = select %cond, %C, %A
into:
%C = select %cond, %B, 0
%D = or %A, %C
Since B is often a constant, the select can often be eliminated. In any case,
this reduces the usage count of A, allowing subsequent optimizations to happen.
This xform applies when the operator is any of:
add, sub, mul, or, xor, and, shl, shr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12800 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-09 23:46:01 +00:00
Chris Lattner
2eefe518de
Fold binary operators with a constant operand into select instructions
...
that have a constant operand. This implements
add.ll:test19, shift.ll:test15*, and others that are not tested
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12794 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-09 19:05:30 +00:00
Chris Lattner
82e14fe168
Implement select.ll:test11
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12793 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-09 18:19:44 +00:00
Chris Lattner
f499eaca36
Implement InstCombine/cast-propagate.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12784 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-08 20:39:49 +00:00
Chris Lattner
0c199a7628
Implement InstCombine/select.ll:test[7-10]
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12769 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-08 04:43:23 +00:00
Chris Lattner
cb69a4ed64
Implement test/Regression/Transforms/InstCombine/getelementptr_index.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12762 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-07 18:38:20 +00:00
Chris Lattner
548f47efb0
Fix a bug in yesterdays checkins which broke siod. siod is a great testcase! :)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12659 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-05 16:02:41 +00:00
Chris Lattner
15a76c0b35
Fix InstCombine/2004-04-04-InstCombineReplaceAllUsesWith.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12658 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-05 02:10:19 +00:00
Chris Lattner
28977af72a
Support getelementptr instructions which use uint's to index into structure
...
types and can have arbitrary 32- and 64-bit integer types indexing into
sequential types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12653 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-05 01:30:19 +00:00
Chris Lattner
40bf8b48cd
Rewrite the indvars pass to use the ScalarEvolution analysis.
...
This also implements some new features for the indvars pass, including
linear function test replacement, exit value substitution, and it works with
a much more general class of induction variables and loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12620 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-02 20:24:31 +00:00
Chris Lattner
c32b30a429
Implement select.ll:test[3-6]
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12544 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-30 19:37:13 +00:00
Chris Lattner
4df1b8aa26
X % -1 == X % 1 == 0
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12520 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-26 16:11:24 +00:00
Chris Lattner
ebd985cb87
Two changes:
...
#1 is to unconditionally strip constantpointerrefs out of
instruction operands where they are absolutely pointless and inhibit
optimization. GRRR!
#2 is to implement InstCombine/getelementptr_const.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12519 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-25 22:59:29 +00:00
Chris Lattner
7c881dffc9
Teach the optimizer to delete zero sized alloca's (but not mallocs!)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12507 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-19 06:08:10 +00:00
Chris Lattner
e911979650
Be more accurate
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12464 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-17 01:59:27 +00:00
Chris Lattner
50eafbc828
Fix bug in previous checkin
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12458 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-16 23:36:49 +00:00
Chris Lattner
24ad00db5a
Okay, so there is no reasonable way for tail duplication to update SSA form,
...
as it is making effectively arbitrary modifications to the CFG and we don't
have a domset/domfrontier implementations that can handle the dynamic updates.
Instead of having a bunch of code that doesn't actually work in practice,
just demote any potentially tricky values to the stack (causing the problem
to go away entirely). Later invocations of mem2reg will rebuild SSA for us.
This fixes all of the major performance regressions with tail duplication
from LLVM 1.1. For example, this loop:
---
int popcount(int x) {
int result = 0;
while (x != 0) {
result = result + (x & 0x1);
x = x >> 1;
}
return result;
}
---
Used to be compiled into:
int %popcount(int %X) {
entry:
br label %loopentry
loopentry: ; preds = %entry, %no_exit
%x.0 = phi int [ %X, %entry ], [ %tmp.9, %no_exit ] ; <int> [#uses=3]
%result.1.0 = phi int [ 0, %entry ], [ %tmp.6, %no_exit ] ; <int> [#uses=2]
%tmp.1 = seteq int %x.0, 0 ; <bool> [#uses=1]
br bool %tmp.1, label %loopexit, label %no_exit
no_exit: ; preds = %loopentry
%tmp.4 = and int %x.0, 1 ; <int> [#uses=1]
%tmp.6 = add int %tmp.4, %result.1.0 ; <int> [#uses=1]
%tmp.9 = shr int %x.0, ubyte 1 ; <int> [#uses=1]
br label %loopentry
loopexit: ; preds = %loopentry
ret int %result.1.0
}
And is now compiled into:
int %popcount(int %X) {
entry:
br label %no_exit
no_exit: ; preds = %entry, %no_exit
%x.0.0 = phi int [ %X, %entry ], [ %tmp.9, %no_exit ] ; <int> [#uses=2]
%result.1.0.0 = phi int [ 0, %entry ], [ %tmp.6, %no_exit ] ; <int> [#uses=1]
%tmp.4 = and int %x.0.0, 1 ; <int> [#uses=1]
%tmp.6 = add int %tmp.4, %result.1.0.0 ; <int> [#uses=2]
%tmp.9 = shr int %x.0.0, ubyte 1 ; <int> [#uses=2]
%tmp.1 = seteq int %tmp.9, 0 ; <bool> [#uses=1]
br bool %tmp.1, label %loopexit, label %no_exit
loopexit: ; preds = %no_exit
ret int %tmp.6
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12457 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-16 23:29:09 +00:00
Chris Lattner
a2f652d420
Do not try to optimize PHI nodes with incredibly high degree. This reduces SCCP
...
time from 615s to 1.49s on a large testcase that has a gigantic switch statement
that all of the blocks in the function go to (an intepreter).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12442 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-16 19:49:59 +00:00
Chris Lattner
4bebf08d15
Do not copy gigantic switch instructions
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12441 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-16 19:45:22 +00:00
Chris Lattner
46234fd97f
Add counters for the number of calls elimianted
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12420 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-15 05:46:59 +00:00
Chris Lattner
118dd0ce3d
Implement LICM of calls in simple cases. This is sufficient to move around
...
sin/cos/strlen calls and stuff. This implements:
LICM/call_sink_pure_function.ll
LICM/call_sink_const_function.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12415 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-15 04:11:30 +00:00
Chris Lattner
0cea42a560
Add some debugging output
...
Fix InstCombine/2004-03-13-InstCombineInfLoop.ll which caused an infinite
loop compiling (I think) povray.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12365 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-13 23:54:27 +00:00
Chris Lattner
bfe492b5c2
Implement sub.ll:test14
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12355 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-13 00:11:49 +00:00
Chris Lattner
9c2906744a
Implement InstCombine/sub.ll:test12 & test13
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12353 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-12 23:53:13 +00:00
Chris Lattner
6e32372fcd
Add sccp support for select instructions
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12318 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-12 05:52:44 +00:00
Chris Lattner
3d69f46d64
Add trivial optimizations for select instructions
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12317 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-12 05:52:32 +00:00
Chris Lattner
c76d80342e
Since 'load null' is undefined, we can make it do whatever we want. Returning
...
a zero value is the most likely way to cause further simplification, so we do it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12197 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-07 22:16:24 +00:00
Chris Lattner
99cca7d3aa
Disable tail duplication in a case that breaks on Olden/tsp
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12021 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-01 01:12:13 +00:00
Chris Lattner
4279f3c984
Fix PR255: [tailduplication] Single basic block loops are very rare
...
Note that this is a band-aid put over a band-aid. This just undisables
tail duplication in on very specific case that it seems to work in.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11989 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-29 06:41:20 +00:00
Chris Lattner
7bcc0e7fff
Rename AddUsesToWorkList -> AddUsersToWorkList, as that is what it does.
...
Create a new AddUsesToWorkList method
optimize memmove/set/cpy of zero bytes to a noop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11941 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-28 05:22:00 +00:00
Chris Lattner
6160e85201
Turn 'free null' into nothing
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11940 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-28 04:57:37 +00:00
Chris Lattner
a0ebcebc06
Implement test/Regression/Transforms/InstCombine/canonicalize_branch.ll
...
This is a really minor thing, but might help out the 'switch statement induction'
code in simplifycfg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11900 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-27 06:27:46 +00:00
Chris Lattner
d38f208cd9
Fix a faulty optimization on FP values
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11801 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-24 18:10:14 +00:00
Chris Lattner
d8864ce766
Generate much more efficient code in programs like pifft
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11775 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 21:46:58 +00:00
Chris Lattner
077a373791
Fix a small typeo in my checkin last night that broke vortex and other programs :(
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11774 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 21:46:42 +00:00
Chris Lattner
8adac75298
Fix InstCombine/2004-02-23-ShiftShiftOverflow.ll
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Also, turn 'shr int %X, 1234' into 'shr int %X, 31'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11768 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 20:30:06 +00:00
Chris Lattner
c5943fb186
Implement cast.ll::test14/15
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11742 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 07:16:20 +00:00
Chris Lattner
4cb170cc6e
Refactor some code. In the mul - setcc folding case, we really care about
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whether this is the sign bit or not, so check unsigned comparisons as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11740 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 06:38:22 +00:00
Chris Lattner
fed58fd72e
Implement mul.ll:test11
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11737 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 06:00:11 +00:00
Chris Lattner
45aaafef49
Implement "strength reduction" of X <= C and X >= C
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11735 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 05:47:48 +00:00
Chris Lattner
fb54b2b744
Implement InstCombine/mul.ll:test10, which is a case that occurs when dealing
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with "predication"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11734 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 05:39:21 +00:00
Chris Lattner
c6bd195336
Implement Transforms/InstCombine/cast.ll:test13, a case which occurs in a
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hot 164.gzip loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11702 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22 05:25:17 +00:00
Chris Lattner
7059f2e76b
Fold PHI nodes of constants which are only used by a single cast. This implements
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phi.ll:test4
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11494 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 05:07:08 +00:00
Chris Lattner
26ca7e145e
Teach LLVM to unravel the "swap idiom". This implements:
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Regression/Transforms/InstCombine/xor.ll:test20
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11492 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 03:54:20 +00:00
Chris Lattner
c317d39887
Implement Transforms/InstCombine/xor.ll:test19
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11490 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 01:20:27 +00:00
Chris Lattner
de512b5b2e
Adjustments to support the new ConstantAggregateZero class
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11474 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-15 05:55:15 +00:00
Chris Lattner
5f55aaf0f0
Remove obsolete comment. Unreachable blocks will automatically be left at the
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end of the function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11313 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-11 05:20:50 +00:00
Chris Lattner
206805e172
Add an _embarassingly simple_ implementation of basic block layout. This is
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more of a testcase for profiling information than anything that should reasonably
be used, but it's a starting point. When I have more time I will whip this into
better shape.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11311 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-11 04:53:20 +00:00
Chris Lattner
aeb2a1d708
rename the "exceptional" destination of an invoke instruction to the 'unwind' dest
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11202 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08 21:44:31 +00:00
Chris Lattner
79fc865ccb
Add debug output
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11139 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05 22:33:19 +00:00
Chris Lattner
c24a076c6a
Adjust to the new BasicBlock ctor, which requires a function parameter
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11114 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04 03:58:28 +00:00
Chris Lattner
0517e72096
Disable (x - (y - z)) => (x + (z - y)) optimization for floating point.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11083 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02 20:09:56 +00:00
Chris Lattner
529429224c
Update comment
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11082 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02 20:09:22 +00:00
Chris Lattner
c23396e8de
Disable tail duplication in any "hard" cases, where it might break SSA form.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11052 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01 06:32:28 +00:00
Chris Lattner
e400a0976f
Fix the count of the number of instructions removed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11049 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01 05:15:07 +00:00
Chris Lattner
f78616b339
Fix InstCombine/2004-01-13-InstCombineInvokePHI.ll, which also fixes lots
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of C++ programs in Shootout-C++, including lists1 and moments, etc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10845 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-14 06:06:08 +00:00
Chris Lattner
76f7fe25d9
Fix bug in previous checkin
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10798 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:47:05 +00:00
Chris Lattner
7c4049c5a0
Eliminate use of ConstantHandling and ConstantExpr::getShift interfaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10796 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:35:11 +00:00
Chris Lattner
b6ac8bc586
Add header file I accidentally removed in teh shuffle
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10795 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:15:20 +00:00
Chris Lattner
5585b335e5
Remove use of the ConstantHandling interfaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10793 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:12:50 +00:00
Chris Lattner
b16689b647
Don't use ConstantExpr::getShift anymore
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10791 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:08:43 +00:00
Chris Lattner
e5d4f1b9e7
Remove unneeded #include
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10788 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 18:33:54 +00:00
Chris Lattner
b7a5d3edee
Use constantexprs for casts. Eliminate use of the ConstantHandling interfaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10779 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 17:43:40 +00:00
Chris Lattner
84831642e4
Fix fairly severe bug in my last checking where we treated all unfoldable
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constants as being "true" when evaluating branches. This was introduced
because we now create constantexprs for the constants instead of failing the
fold.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10778 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 17:40:36 +00:00
Chris Lattner
c6a4d6a066
* Implement minor performance optimization for the getelementptr case
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* Implement SCCP of load instructions, implementing Transforms/SCCP/loadtest.ll
This allows us to fold expressions like "foo"[2], even if the pointer is only
a conditional constant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10767 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 04:29:41 +00:00
Chris Lattner
5f16a13896
Do not hack on volatile loads. I'm not sure what the point of a volatile load
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from constant memory is, but lets not take chances.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10765 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 04:13:56 +00:00
Chris Lattner
1daee8b010
Implement SCCP/phitest.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10763 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 03:57:30 +00:00
Chris Lattner
2cacc0a306
Update obsolete comments
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Fix iterator invalidation problems which was causing -mstrip to miss some
entries, and read free'd memory. This shrinks the symbol table of 254.gap
from 333 to 284 bytes! :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10751 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-10 21:36:49 +00:00
Chris Lattner
d745602662
Finegrainify namespacification
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10725 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09 06:02:20 +00:00
Chris Lattner
329c1c6c94
Improve encapsulation in the Loop and LoopInfo classes by eliminating the
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getSubLoops/getTopLevelLoops methods, replacing them with iterator-based
accessors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10714 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-08 00:09:44 +00:00
Chris Lattner
15cad759fe
More minor non-functional changes. This now computes the exit condition, though
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it doesn't do anything with it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10590 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-23 07:47:09 +00:00
Chris Lattner
500597a1c3
Don't mind me, I'm just refactoring away. This patch makes room for LFTR, but
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contains no functionality changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10583 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 09:53:29 +00:00
Chris Lattner
18b3c97bc7
Implement IndVarsSimplify/pointer-indvars.ll, transforming pointer
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arithmetic into "array subscripts"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10580 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 05:02:01 +00:00
Chris Lattner
3324e718bc
Fix PR194
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10573 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 03:58:44 +00:00
Chris Lattner
bd1a90ecc7
Fix ADCE/2003-12-19-MergeReturn.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10539 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 09:08:34 +00:00
Chris Lattner
a3df8a964a
Remove the wierd "Operands" loop, by traversing basicblocks in reverse order
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10536 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 08:18:16 +00:00
Chris Lattner
e4365b2e8c
Implement LICM/sink_multiple.ll, by sinking all possible instructions in the
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loop before hoisting any.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10534 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 07:22:45 +00:00
Chris Lattner
60921c9aa1
Factor code out into the Utils library
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10530 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 05:58:40 +00:00
John Criswell
47df12d80d
Reverted back to previous revision - this was previously merged
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according to the CVS log messages.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10517 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18 17:19:19 +00:00
John Criswell
d000e1dc2f
Merged in RELEASE_11.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10516 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18 16:43:17 +00:00
Chris Lattner
ba7df4c482
When we delete instructions from the loop, make sure to remove them from the
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AliasSetTracker as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10507 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18 08:12:32 +00:00
Chris Lattner
9e45d2e0e8
Fix for PR185 & IndVarsSimplify/2003-12-15-Crash.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10473 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-15 17:34:02 +00:00
Chris Lattner
d64152a708
Refactor code just a little bit, allowing us to implement TailCallElim/return_constant.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10467 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-14 23:57:39 +00:00
Chris Lattner
00ad4a2d17
Do not promote volatile alias sets into registers
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10458 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-14 04:52:31 +00:00
Chris Lattner
ea9403f2aa
Fix LICM/2003-12-11-SinkingToPHI.ll, and quite possibly all of the other known problems in the universe.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10409 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-11 22:23:32 +00:00
Chris Lattner
7d3ced934f
Fix bug: LICM/sink_multiple_exits.ll
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Thanks for pointing this out John :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10387 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 22:35:56 +00:00
Chris Lattner
df45bd3803
Don't allow dead instructions to stop sinking early.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10386 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 20:43:29 +00:00
Chris Lattner
88369d214f
Fix bug: IndVarsSimplify/2003-12-10-RemoveInstrCrash.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10385 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 20:43:04 +00:00
Chris Lattner
ba4f3f6a41
Finegrainify namespacification
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Reorder #includes
Implement: IndVarsSimplify/2003-12-10-IndVarDeadCode.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10376 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 18:06:47 +00:00
Chris Lattner
e3cfe8d563
Simplify code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10371 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 16:58:24 +00:00
Chris Lattner
f594a03197
Avoid performing two identical lookups when one will suffice
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10370 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 16:57:24 +00:00
Chris Lattner
0ed2da9ac7
Make LICM itself a bit more efficient, and make the generated code more efficient too: don't insert a store in every exit block, because a particular block may be exited to more than once by a loop
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10369 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 15:56:24 +00:00
Chris Lattner
a2706518f9
Implement instruction sinking out of loops. This still can do a little bit
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better job, but this is the majority of the work. This implements
LICM/sink*.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10358 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 06:41:05 +00:00
Chris Lattner
ed6dfc2856
Refactor code a little bit, eliminating the gratuitous InstVisitor, which
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should make subsequent changes simpler. This also allows us to hoist vaarg
and vanext instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10342 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-09 19:32:44 +00:00
Chris Lattner
92094b4d92
Fine grainify namespacification
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Code cleanups
Make LICM::SafeToHoist marginally more efficient
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10341 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-09 17:18:00 +00:00
Chris Lattner
cf2f89251d
Implement: TailCallElim/accum_recursion_constant_arg.ll
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Also make sure to clean up any PHI nodes that are inserted which are pointless.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10333 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-08 23:37:35 +00:00
Chris Lattner
543d622ef7
Implement: test/Regression/Transforms/TailCallElim/accum_recursion.ll
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We now insert accumulator variables as necessary to eliminate tail recursion
more aggressively. This is still fairly limited, but allows us to transform
fib/factorial, and other functions into nice happy loops. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10332 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-08 23:19:26 +00:00
Chris Lattner
7152da38ef
Cleanup and restructure the code to make it easier to read and maintain.
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The only functionality change is that we now implement:
Regression/Transforms/TailCallElim/intervening-inst.ll
Which is really kinda pointless, because it means that trivially dead code
does not interfere with -tce, but trivially dead code probably wouldn't be
around anytime when this pass is run anyway.
The point of including this change it to support other more aggressive
transformations when we have the analysis capabilities to do so.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10312 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-08 05:34:54 +00:00
Chris Lattner
67b1e1b89f
* Finegrainify namespacification
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* Transform: free <ty>* (cast <ty2>* X to <ty>*) into free <ty2>* X
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10303 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-07 01:24:23 +00:00
Chris Lattner
d866473094
Finegrainify namespacification
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Fix regressions ScalarRepl/basictest.ll & arraytest.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10287 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-02 17:43:55 +00:00
Chris Lattner
be883a23ed
Do not use index type to determine what it is indexing into!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10226 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-25 21:09:18 +00:00
Chris Lattner
c8ecd22037
Do not crash when deleing a region with a dead invoke instruction
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10161 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-22 02:13:08 +00:00
Chris Lattner
35bb52f8b1
Finegrainify namespacification
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The module stripping pass should not strip symbols on external globals
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10157 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-22 01:29:35 +00:00
Chris Lattner
108e4ab159
Minor cleanups and simplifications
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10127 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-21 16:52:05 +00:00
Chris Lattner
f8485c6434
Start using the nicer terminator auto-insertion API
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10111 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-20 18:25:24 +00:00
Chris Lattner
faa45ce300
Fix PR116
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10032 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-16 21:39:27 +00:00
Chris Lattner
917e804253
Implement feature: InstCombine/2003-11-13-ConstExprCastCall.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9981 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-13 19:17:02 +00:00
Brian Gaeke
d0fde30ce8
Put all LLVM code into the llvm namespace, as per bug 109.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-11 22:41:34 +00:00
Chris Lattner
d23520cd94
Adjust to new critical edge interface
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9853 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-10 04:10:50 +00:00
Misha Brukman
ed1f7c81aa
Declare FunctionPasses as such so that they can be used in FunctionPassManager.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9768 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-07 17:20:18 +00:00
Chris Lattner
1bcc70d240
Fix flawed logic that was breaking several SPEC benchmarks, including gzip and crafty.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9731 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-05 17:31:36 +00:00
Chris Lattner
d65460f133
Fix bug with previous implementation:
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- // ~(c-X) == X-(c-1) == X+(-c+1)
+ // ~(c-X) == X-c-1 == X+(-c-1)
Implement: C - ~X == X + (1+C)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9715 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-05 01:06:05 +00:00
Chris Lattner
ad5b4fb6b7
Minor cleanup, plus implement InstCombine/xor.ll:test17
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9711 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-04 23:50:51 +00:00
Chris Lattner
689d24b6ed
Implement InstCombine/xor.ll:test(15|16)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9708 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-04 23:37:10 +00:00
Chris Lattner
6870805117
Implement InstCombine/cast-set.ll:test6[a]. This improves code generated for
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a hot function in em3d
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9673 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-03 05:17:03 +00:00
Chris Lattner
de90b76670
Implement InstCombine/cast-set.ll: test1, test2, test7
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9670 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-03 04:25:02 +00:00
Chris Lattner
8ee9204309
Fix bug with zero sized casts
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9667 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-03 01:29:41 +00:00
Chris Lattner
fc07a3473a
Fix bug in previous checkin
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9656 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-02 06:54:48 +00:00
Chris Lattner
bc61e661bd
Implement transmogriphication of allocation instructions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9654 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-02 05:57:39 +00:00
Chris Lattner
bb60904469
Fix bug: 2003-10-29-CallSiteResolve.ll & PR70
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9600 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-30 00:46:41 +00:00
Chris Lattner
546fc40d69
Fix PR66 & ScalarRepl/2003-10-29-ArrayProblem.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9585 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-29 17:55:44 +00:00
John Criswell
e488e9360b
Added LLVM copyright notice to Makefiles.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9312 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-20 22:26:57 +00:00
John Criswell
b576c94c15
Added LLVM project notice to the top of every C++ source file.
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Header files will be on the way.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-20 19:43:21 +00:00
Chris Lattner
3b237fcd38
Change the Opcode enum for PHI nodes from "Instruction::PHINode" to "Instruction::PHI" to be more consistent with the other instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9269 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-19 21:34:28 +00:00
Chris Lattner
cda965e28a
ADd support for the new varargs instructions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9225 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-18 05:56:52 +00:00
Chris Lattner
76590640cf
This code does not require random access use_lists
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9156 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-16 16:49:12 +00:00
Chris Lattner
fd05924946
Decrease usage of use_size()
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9135 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-15 16:48:29 +00:00
Chris Lattner
4a650af599
Wrap code at 80 columns
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9073 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-13 05:04:27 +00:00
Chris Lattner
98bf436e2e
Rename loop preheaders pass to loop simplify
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9061 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-12 21:52:28 +00:00
Misha Brukman
cf00c4ab3b
Fix spelling.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9027 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-10 17:57:28 +00:00
Chris Lattner
929c6fbcbc
Update comment
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8965 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-08 16:56:11 +00:00
Chris Lattner
16b18fdc35
Use a set to keep track of which edges have been noticed as executable already
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to avoid reprocessing PHI nodes needlessly. This speeds up the big bad PHI
testcase 43%: from 104.9826 to 73.5157s
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8964 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-08 16:55:34 +00:00
Chris Lattner
3d405b07b4
Minor fixes here and there
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8963 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-08 16:21:03 +00:00
Chris Lattner
7d275f459b
Avoid building data structures we don't really need. This improves the runtime
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of a test that Bill Wendling sent me from 228.5s to 105s. Obviously there is
more improvement to be had, but this is a nice speedup which should be "felt"
by many programs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8962 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-08 15:47:41 +00:00
Chris Lattner
d558dc3464
whoops, don't accidentally lose variable names
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8955 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-07 22:58:41 +00:00
Chris Lattner
6c266db54c
Fix bug: InstCombine/cast.ll:test11 / PR#7
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8954 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-07 22:54:13 +00:00
Chris Lattner
a44d8a2897
Refactor code a bit
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8952 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-07 22:32:43 +00:00
Chris Lattner
6061000b54
Fix bug in previous checkin
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8922 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-07 15:17:02 +00:00
Chris Lattner
4bb7c02eba
Minor speedups for the instcombine pass
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8894 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-06 17:11:01 +00:00
Chris Lattner
43f820d1f7
Change the interface to PromoteMemToReg to also take a DominatorTree
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8883 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-05 21:20:13 +00:00
Chris Lattner
b55803a9f4
simplify-cfg is really a function pass
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8868 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-05 19:14:16 +00:00
Chris Lattner
6b032052cc
Implement InstCombine/add.ll:test17 & 18
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8817 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-02 15:11:26 +00:00
Chris Lattner
332ae7f501
Fix bug: IndVarsSimplify/2003-09-23-NotAtTop.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8689 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-23 20:26:48 +00:00
Misha Brukman
22b9aab760
Credits now go into the top-level CREDITS.TXT
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8662 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-22 21:57:56 +00:00
Chris Lattner
021c190f8d
Squelch warning
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8659 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-22 20:33:34 +00:00
Chris Lattner
02a3be020a
Rename Function::getEntryNode -> getEntryBlock
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8625 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-20 14:39:18 +00:00
Chris Lattner
d452ebd0bf
Fix a really obvious huge gaping bug, add a comment
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8620 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-20 05:24:00 +00:00
Chris Lattner
3fc6ef1bb9
Expose the TCE pass
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8619 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-20 05:14:13 +00:00
Chris Lattner
2240d2b3f7
New transformation: tail recursion elimination
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8618 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-20 05:03:31 +00:00
Chris Lattner
62a355cc6e
Implement InstCombine/and.ll:test(15|16)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8607 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-19 19:05:02 +00:00
Chris Lattner
bd7b5fff82
pull a large nested conditional out into its own function
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8605 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-19 17:17:26 +00:00
Chris Lattner
9d5890d435
Implement InstCombine/add.ll:test(15|16)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8604 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-19 15:35:42 +00:00
Chris Lattner
a497748fb1
Make sure to cannonicalize loops before running indvar simplify
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8502 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-12 16:45:01 +00:00
Chris Lattner
8fce16ef1a
Do not return success after checking only the FIRST USE of a gep instruction.
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Instead, check all uses.
This fixes bug: ScalarRepl/2003-09-12-IncorrectPromote.ll
This also fixes the miscompilation of Ptrdist/bc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8493 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-12 16:02:12 +00:00
Chris Lattner
fe7ea0da17
Minor optimization efficiency improvement:
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- Run mem2reg promotion first
- Only rerun passes if the previous thing changed something
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8490 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-12 15:36:03 +00:00
Chris Lattner
515c97c230
Simplify code
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Implement InstCombine/mul.ll:test9
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8488 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-11 22:24:54 +00:00
Misha Brukman
3cfb6b13c0
Apostrophes are only used for possession and quoting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8473 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-11 16:58:31 +00:00
Chris Lattner
38aec32560
Integrate functionality of the mem2reg pass directly into this pass to make
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the combination more effective
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8471 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-11 16:45:55 +00:00
Chris Lattner
c444a4228f
Renamed DominatorTree::Node::getNode() -> getBlock()
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8469 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-11 16:26:13 +00:00
Misha Brukman
352361b409
Spell `definite' correctly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8467 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-11 15:32:37 +00:00
Chris Lattner
545a76ced8
Unwind instructions are intrinsically alive, just like returns
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8462 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-10 20:38:14 +00:00
Chris Lattner
065a616ada
Fix spell-o's
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8431 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-10 05:29:43 +00:00
Chris Lattner
3adf51d022
Spelling fixes. I think that "cannonical" is ok, but "canonical" appears to
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be the canonical form for the word
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8430 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-10 05:24:46 +00:00
Chris Lattner
c01ccfd503
Fix up file header
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8428 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-10 05:10:34 +00:00
Misha Brukman
dfa5f83c8e
Spell `occurrence' correctly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8425 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-09 21:54:45 +00:00
Chris Lattner
36143fc444
Add support for the unwind instruction
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8408 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-08 18:54:55 +00:00
Chris Lattner
61c1e7e32d
Do not hoist volatile loads
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8399 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-08 18:17:14 +00:00
Chris Lattner
3186d275f7
Fix bug: TailDuplicate/2003-08-31-UnreachableBlocks.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8276 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-31 21:17:44 +00:00
Chris Lattner
a15854c9fe
ScalarRepl does not modify the CFG. Say so!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8243 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-31 00:45:13 +00:00
Chris Lattner
99b28e632f
Fix bug: SCCP/2003-08-26-InvokeHandling.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8152 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-27 01:08:35 +00:00
Chris Lattner
086cb002d2
Fix bug: TailDup/2003-08-23-InvalidatedPointers.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8078 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-23 20:08:30 +00:00
Misha Brukman
ef6a6a69ff
The word dependent' has no
a'.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8030 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-21 22:14:26 +00:00
Misha Brukman
5560c9d49c
Spell `necessary' correctly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7944 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-18 14:43:39 +00:00
Brian Gaeke
bf3c4cfaad
Factory methods for function passes now return type FunctionPass *.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7839 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-14 06:09:32 +00:00
Chris Lattner
aa9c1f13a1
Implement instcombine optimizations:
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(A <setcc1> B) logicalop (A <setcc2> B) -> (A <setcc3> B) or true or false
Where setcc[123] is one of the 6 setcc instructions, and logicalop is one of: And, Or, Xor
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2003-08-13 20:16:26 +00:00
Chris Lattner
564a727969
Generalize some of the add tests to allow for reassociation to take place
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7825 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-13 19:01:45 +00:00
Chris Lattner
fb5be090f5
Assign arguments different ranks so they get grouped together
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7813 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-13 16:16:26 +00:00