Chris Lattner
7aa773bc07
Fix the obvious bug in my previous checkin
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12618 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-02 18:15:10 +00:00
Chris Lattner
147af6b75f
Implement Transforms/SimplifyCFG/return-merge.ll
...
This actually causes us to turn code like:
return C ? A : B;
into a select instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12617 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-02 18:13:43 +00:00
Chris Lattner
c68bace452
Fix PR310 and TailDup/2004-04-01-DemoteRegToStack.llx
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12597 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-01 20:28:45 +00:00
Chris Lattner
4edf6c043e
Remove some assertions that are now bogus with the last patch I put in
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12595 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-01 19:21:46 +00:00
Chris Lattner
4f303bd4a5
Fix PR306: Loop simplify incorrectly updates dominator information
...
Testcase: LoopSimplify/2004-04-01-IncorrectDomUpdate.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12592 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-01 19:06:07 +00:00
Chris Lattner
0e28eca4bc
Add warning
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12573 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-31 22:00:30 +00:00
Chris Lattner
1438102576
Fix linking of constant expr casts due to type resolution changes. With
...
this and the other patches 253.perlbmk links again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12565 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-31 02:58:28 +00:00
Chris Lattner
552112f2f8
Now that all the code generators support the select instruction, and the instcombine
...
pass can eliminate many nasty cases of them, start generating them in the optimizers
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12545 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-30 19:44:05 +00:00
Chris Lattner
18bdbc3dda
Add a simple select instruction lowering pass
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12540 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-30 18:41:10 +00:00
Chris Lattner
aa7ab53b99
Fix bug: CodeExtractor/2004-03-17-MissedLiveIns.ll
...
With this fix we now successfully extract all 149 loops from 256.bzip2 without
crashing or miscompiling the program!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12493 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-18 05:56:32 +00:00
Chris Lattner
d07f899691
Fix CodeExtractor/2004-03-17-UpdatePHIsOutsideRegion.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12489 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-18 05:38:31 +00:00
Chris Lattner
5cc8ca6420
Seriously simplify and correct the PHI node handling code.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12487 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-18 05:28:49 +00:00
Chris Lattner
04229c192b
Fix CodeExtractor/2004-03-17-OutputMismatch.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12486 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-18 04:12:05 +00:00
Chris Lattner
b5c1dbf503
Fix several bugs in the extractor:
...
1. Names were not put on the new arguments created (ok, this just helps sanity :)
2. Fix outgoing pointer values
3. Do not insert stores for values that had not been computed
4. Fix some wierd problems with the outset calculation
This fixes CodeExtractor/2004-03-14-DominanceProblem.ll, making the extractor
work on at least one simple case!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12484 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-18 03:49:40 +00:00
Chris Lattner
33e197b777
Prune #includes, moving the module interface to the front. Note that this
...
exposed the fact that the header was not self-contained. There is a reason
we do things :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12481 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-18 03:15:29 +00:00
Chris Lattner
7acd1ccb8a
Fix compilation of mesa, which I broke earlier today
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12465 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-17 02:02:47 +00:00
Chris Lattner
c1a0623e86
This code was both incredibly complex and incredibly broken. Fix it.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12456 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-16 23:23:11 +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
85ebd541fa
Fix a regression from this patch:
...
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20040308/013095.html
Basically, this patch only updated the immediate dominatees of the header node
to tell them that the preheader also dominated them. In practice, ALL
dominatees of the header node are also dominated by the preheader.
This fixes: LoopSimplify/2004-03-15-IncorrectDomUpdate.
and PR293
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12434 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-16 06:00:15 +00:00
Chris Lattner
15d443b566
Mostly cosmetic improvements. Do fix the bug where a global value was considered an input.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12406 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-15 01:26:44 +00:00
Chris Lattner
0de632bfae
Assert that input blocks meet the invariants we expect
...
Simplify the input/output finder. All elements of a basic block are
instructions. Any used arguments are also inputs. An instruction can only
be used by another instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12405 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-15 01:18:23 +00:00
Chris Lattner
65826bf435
No correctness fixes here, just minor qoi fixes:
...
* Don't insert a branch to the switch instruction after the call, just
make it a single block.
* Insert the new alloca instructions in the entry block of the original
function instead of having them execute dynamically
* Don't make the default edge of the switch instruction go back to the switch.
The loop extractor shouldn't create new loops!
* Give meaningful names to the alloca slots and the reload instructions
* Some minor code simplifications
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12402 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14 23:43:24 +00:00
Chris Lattner
12f390e9c0
Simplify code a bit, and fix bug CodeExtractor/2004-03-14-NoSwitchSupport.ll
...
This also implements a two minor improvements:
* Don't insert live-out stores IN the region, insert them on the code path
that exits the region
* If the region is exited to the same block from multiple paths, share the
switch statement entry, live-out store code, and the basic block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12401 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14 23:05:49 +00:00
Chris Lattner
0e06674287
Simplify the code a bit by making the collection of basic blocks to extract
...
a member of the class. While we're at it, turn the collection into a set
instead of a vector to improve efficiency and make queries simpler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12400 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14 22:34:55 +00:00
Chris Lattner
bf9eaddfb0
Do not create empty basic blocks when the lowerswitch pass expects blocks to
...
be non-empty! This fixes LowerSwitch/2004-03-13-SwitchIsDefaultCrash.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12384 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14 04:14:31 +00:00
Chris Lattner
bb41156c0c
Minor random cleanups
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12382 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14 04:01:47 +00:00
Chris Lattner
2ef703ec42
If a block is dead, dominators will not be calculated for it. Because of this
...
loop information won't see it, and we could have unreachable blocks pointing to
the non-header node of blocks in a natural loop. This isn't tidy, so have the
loopsimplify pass clean it up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12380 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14 03:59:22 +00:00
Chris Lattner
ffada93273
Verify functions as they are produced if -debug is specified. Reduce
...
curly braceage
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12378 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14 03:17:22 +00:00
Chris Lattner
c3c8703c3b
Move to the IPO library. Utils shouldn't contain passes.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12372 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14 02:32:27 +00:00
Chris Lattner
a2dc727ac4
DemoteRegToStack got moved from DemoteRegToStack.h to Local.h
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12368 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14 02:13:38 +00:00
Chris Lattner
786c5646e9
This little patch speeds up the loop used to update the dominator set analysis.
...
On the testcase from GCC PR12440, which has a LOT of loops (1392 of which require
preheaders to be inserted), this speeds up the loopsimplify pass from 1.931s to
0.1875s. The loop in question goes from 1.65s -> 0.0097s, which isn't bad. All of
these times are a debug build.
This adds a dependency on DominatorTree analysis that was not there before, but
we always had dominatortree available anyway, because LICM requires both loop
simplify and DT, so this doesn't add any extra analysis in practice.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12362 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-13 22:01:26 +00:00
Chris Lattner
17fd273512
Add constant folding wrapper support for select instructions.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12319 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-12 05:53:03 +00:00
Chris Lattner
0a94348fb9
Don't emit things like malloc(16*1). Allocation instructions are fixed arity now.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12086 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-03 01:40:53 +00:00
Misha Brukman
0256e4bbf9
Implement ExtractCodeRegion()
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12070 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-02 00:20:57 +00:00
Misha Brukman
38b8fd1078
Make a note that this is usually used via bugpoint.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12068 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-02 00:19:09 +00:00
Misha Brukman
b97fce5252
* Add implementation of ExtractBasicBlock()
...
* Add comments to ExtractLoop()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12053 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-01 18:28:34 +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
06887c9a2a
Fix bug: test/Regression/Transforms/LowerInvoke/2004-02-29-PHICrash.llx
...
... which tickled the lowerinvoke pass because it used the BCE routines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12012 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-29 22:24:41 +00:00
Chris Lattner
542f149f00
Implement switch->br and br->switch folding by ripping out the switch->switch
...
and br->br code and generalizing it. This allows us to compile code like this:
int test(Instruction *I) {
if (isa<CastInst>(I))
return foo(7);
else if (isa<BranchInst>(I))
return foo(123);
else if (isa<UnwindInst>(I))
return foo(1241);
else if (isa<SetCondInst>(I))
return foo(1);
else if (isa<VAArgInst>(I))
return foo(42);
return foo(-1);
}
into:
int %_Z4testPN4llvm11InstructionE("struct.llvm::Instruction"* %I) {
entry:
%tmp.1.i.i.i.i.i.i.i = getelementptr "struct.llvm::Instruction"* %I, long 0, ubyte 4 ; <uint*> [#uses=1]
%tmp.2.i.i.i.i.i.i.i = load uint* %tmp.1.i.i.i.i.i.i.i ; <uint> [#uses=2]
%tmp.2.i.i.i.i.i.i = seteq uint %tmp.2.i.i.i.i.i.i.i, 27 ; <bool> [#uses=0]
switch uint %tmp.2.i.i.i.i.i.i.i, label %endif.0 [
uint 27, label %then.0
uint 2, label %then.1
uint 5, label %then.2
uint 14, label %then.3
uint 15, label %then.3
uint 16, label %then.3
uint 17, label %then.3
uint 18, label %then.3
uint 19, label %then.3
uint 32, label %then.4
]
...
As well as handling the cases in 176.gcc and many other programs more effectively.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11964 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-28 21:28:10 +00:00
Chris Lattner
b99df4f8c2
if there is already a prototype for malloc/free, use it, even if it's incorrect.
...
Do not just inject a new prototype.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11951 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-28 18:51:45 +00:00
Misha Brukman
9e4a642c03
Right, it's really Extractor, not Extraction.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11939 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-28 03:37:58 +00:00
Misha Brukman
9401deb320
A pass that uses the generic CodeExtractor to rip out *every* loop in every
...
function, as long as the loop isn't the only one in that function. This should
help debugging passes easier with BugPoint.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11936 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-28 03:33:01 +00:00
Misha Brukman
e6336031b8
A generic code extractor: given a list of BasicBlocks, it will rip them out into
...
a new function, taking care of inputs and outputs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11935 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-28 03:26:20 +00:00
Chris Lattner
f2dbf50efa
turn things like:
...
if (X == 0 || X == 2)
...where the comparisons and branches are in different blocks... into a switch
instruction. This comes up a lot in various programs, and works well with
the switch/switch merging code I checked earlier. For example, this testcase:
int switchtest(int C) {
return C == 0 ? f(123) :
C == 1 ? f(3123) :
C == 4 ? f(312) :
C == 5 ? f(1234): f(444);
}
is converted into this:
switch int %C, label %cond_false.3 [
int 0, label %cond_true.0
int 1, label %cond_true.1
int 4, label %cond_true.2
int 5, label %cond_true.3
]
instead of a whole bunch of conditional branches.
Admittedly the code is ugly, and incomplete. To be complete, we need to add
br -> switch merging and switch -> br merging. For example, this testcase:
struct foo { int Q, R, Z; };
#define A (X->Q+X->R * 123)
int test(struct foo *X) {
return A == 123 ? X1() :
A == 12321 ? X2():
(A == 111 || A == 222) ? X3() :
A == 875 ? X4() : X5();
}
Gets compiled to this:
switch int %tmp.7, label %cond_false.2 [
int 123, label %cond_true.0
int 12321, label %cond_true.1
int 111, label %cond_true.2
int 222, label %cond_true.2
]
...
cond_false.2: ; preds = %entry
%tmp.52 = seteq int %tmp.7, 875 ; <bool> [#uses=1]
br bool %tmp.52, label %cond_true.3, label %cond_false.3
where the branch could be folded into the switch.
This kind of thing occurs *ALL OF THE TIME*, especially in programs like
176.gcc, which is a horrible mess of code. It contains stuff like *shudder*:
#define SWITCH_TAKES_ARG(CHAR) \
( (CHAR) == 'D' \
|| (CHAR) == 'U' \
|| (CHAR) == 'o' \
|| (CHAR) == 'e' \
|| (CHAR) == 'u' \
|| (CHAR) == 'I' \
|| (CHAR) == 'm' \
|| (CHAR) == 'L' \
|| (CHAR) == 'A' \
|| (CHAR) == 'h' \
|| (CHAR) == 'z')
and
#define CONST_OK_FOR_LETTER_P(VALUE, C) \
((C) == 'I' ? SMALL_INTVAL (VALUE) \
: (C) == 'J' ? SMALL_INTVAL (-(VALUE)) \
: (C) == 'K' ? (unsigned)(VALUE) < 32 \
: (C) == 'L' ? ((VALUE) & 0xffff) == 0 \
: (C) == 'M' ? integer_ok_for_set (VALUE) \
: (C) == 'N' ? (VALUE) < 0 \
: (C) == 'O' ? (VALUE) == 0 \
: (C) == 'P' ? (VALUE) >= 0 \
: 0)
and
#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
{ \
if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \
(X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \
copy_to_mode_reg (SImode, XEXP (X, 1))); \
if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \
(X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \
copy_to_mode_reg (SImode, XEXP (X, 0))); \
if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \
(X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \
force_operand (XEXP (X, 0), 0)); \
if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \
(X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \
force_operand (XEXP (X, 1), 0)); \
if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == PLUS) \
(X) = gen_rtx (PLUS, Pmode, force_operand (XEXP (X, 0), NULL_RTX),\
XEXP (X, 1)); \
if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == PLUS) \
(X) = gen_rtx (PLUS, Pmode, XEXP (X, 0), \
force_operand (XEXP (X, 1), NULL_RTX)); \
if (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == CONST \
|| GET_CODE (X) == LABEL_REF) \
(X) = legitimize_address (flag_pic, X, 0, 0); \
if (memory_address_p (MODE, X)) \
goto WIN; }
and others. These macros get used multiple times of course. These are such
lovely candidates for macros, aren't they? :)
This code also nicely handles LLVM constructs that look like this:
if (isa<CastInst>(I))
...
else if (isa<BranchInst>(I))
...
else if (isa<SetCondInst>(I))
...
else if (isa<UnwindInst>(I))
...
else if (isa<VAArgInst>(I))
...
where the isa can obviously be a dyn_cast as well. Switch instructions are a
good thing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11870 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-26 07:13:46 +00:00
Chris Lattner
940ff563f7
Fix incorrect debug code
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11821 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-25 15:15:04 +00:00
Chris Lattner
8e509dd5e8
If a block is made dead, make sure to promptly remove it.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11799 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-24 16:09:21 +00:00
Chris Lattner
d52c261cf8
Implement SimplifyCFG/switch_switch_fold.ll
...
This case occurs many times in various benchmarks, especially when combined
with the previous patch. This allows it to get stuff like:
if (X == 4 || X == 3)
if (X == 5 || X == 8)
and
switch (X) {
case 4: case 5: case 6:
if (X == 4 || X == 5)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11797 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-24 07:23:58 +00:00
Chris Lattner
e14ea0804a
Rearrange code a bit
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11793 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-24 05:54:22 +00:00
Chris Lattner
0d56008f53
Implement: test/Regression/Transforms/SimplifyCFG/switch_create.ll
...
This turns code like this:
if (X == 4 | X == 7)
and
if (X != 4 & X != 7)
into switch instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11792 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-24 05:38:11 +00:00
Chris Lattner
57cb9883aa
Fix PR245: Linking weak and strong global variables is dependent on link order
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11565 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-17 21:56:04 +00:00
Chris Lattner
19831ec853
Implement test/Regression/Transforms/SimplifyCFG/UncondBranchToReturn.ll,
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see the testcase for the reasoning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11496 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 06:35:48 +00:00
Chris Lattner
860a16143c
Instead of producing calls to setjmp/longjmp, produce uses of the
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llvm.setjmp/llvm.longjmp intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11482 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-15 22:24:27 +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
494b6920b0
Fix compilation of 126.gcc: intrinsic functions cannot throw, so they are not
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allowed in invoke instructions. Thus, if we are inlining a call to an intrinsic
function into an invoke site, we don't need to turn the call into an invoke!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11384 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-13 16:47:35 +00:00
Chris Lattner
cefc18e7d9
Expose a pass ID that can be 'required'
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11376 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-13 16:16:16 +00:00
Chris Lattner
723c66d4c0
Implement SimplifyCFG/PhiEliminate.ll
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Having a proper 'select' instruction would allow the elimination of a lot
of the special case cruft in this patch, but we don't have one yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11307 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-11 03:36:04 +00:00
Chris Lattner
2355f948c5
The hasConstantReferences predicate always returns false.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11301 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-11 01:17:07 +00:00
Chris Lattner
f1d0d3519f
Only add the global variable with the abort message if an unwind actually
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occurs in the program.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11249 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09 22:48:47 +00:00
Misha Brukman
b9806e0101
Fix grammar-o.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11210 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08 22:27:33 +00:00
Chris Lattner
501825e08a
Improve compatibility with programs that already have a prototype for 'write',
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even if it is wierd in some way.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11207 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08 22:14:44 +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
6d78457f17
Implement proper invoke/unwind lowering.
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This fixed PR16 "[lowerinvoke] The -lowerinvoke pass does not insert calls to setjmp/longjmp"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11195 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08 19:53:56 +00:00
Chris Lattner
e1c09309f2
Add a call to 'write' right before the call to abort() in the unwind path.
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This causes the JIT, or LLC'd program to print out a nice message, explaining
WHY the program aborted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11184 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08 07:30:29 +00:00
Chris Lattner
99dcc1da86
Fix another dominator update bug. These bugs keep getting exposed because GCSE
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keeps finding more code motion opportunities now that the dominators are correct!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11142 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05 23:20:59 +00:00
Chris Lattner
3e0b870def
Fix bug updating dominators
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11140 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05 22:33:26 +00:00
Chris Lattner
4f02fc28eb
Fix PR223: Loopsimplify incorrectly updates dominator information
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The problem is that the dominator update code didn't "realize" that it's
possible for the newly inserted basic block to dominate anything. Because
it IS possible, stuff was getting updated wrong.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11137 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05 21:12:24 +00:00
Chris Lattner
a33ceaa2d4
Minor speedup, don't query ValueMap each time through the loop
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11123 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04 21:44:26 +00:00
Chris Lattner
c1df7e1799
Two changes:
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1. Don't scan to the end of alloca instructions in the caller function to
insert inlined allocas, just insert at the top. This saves a lot of
time inlining into functions with a lot of allocas.
2. Use splice to move the alloca instructions over, instead of remove/insert.
This allows us to transfer a block at a time, and eliminates a bunch of
silly symbol table manipulations.
This speeds up the inliner on the testcase in PR209 from 1.73s -> 1.04s (67%)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11118 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04 21:33:42 +00:00
Chris Lattner
44a6807f4f
Optimize the case where we are inlining a function that contains only one basic block,
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and that basic block ends with a return instruction. In this case, we can just splice
the cloned "body" of the function directly into the source basic block, avoiding a lot
of rearrangement and splitBasicBlock's linear scan over the split block. This speeds up
the inliner on the testcase in PR209 from 2.3s to 1.7s, a 35% reduction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11116 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04 04:17:06 +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
5e923dee60
More refactoring. Move alloca instructions and handle invoke instructions
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before we delete the original call site, allowing slight simplifications of
code, but nothing exciting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11109 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04 02:51:48 +00:00
Chris Lattner
5052c911ec
Move the cloning of the function body much earlier in the inlinefunction
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process. The only optimization we did so far is to avoid creating a
PHI node, then immediately destroying it in the common case where the
callee has one return statement. Instead, we just don't create the return
value. This has no noticable performance impact, but paves the way for
future improvements.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11108 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04 01:41:09 +00:00
Chris Lattner
23b4c68f46
Give CloneBasicBlock an optional function argument to specify which function
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to add the cloned block to. This allows the block to be added to the function
immediately, and all of the instructions to be immediately added to the function
symbol table, which speeds up the inliner from 3.7 -> 3.38s on the PR209.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11107 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04 01:19:43 +00:00
Chris Lattner
e47f78ed12
Bunch up all locally used allocas by the block they are allocated in, and
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process them all as a group. This speeds up SRoA/mem2reg from 28.46s to
0.62s on the testcase from PR209.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11100 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03 22:34:12 +00:00
Chris Lattner
7fecc2e5e2
Handle extremely trivial cases extremely efficiently. This speeds up
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SRoA/mem2reg from 41.2s to 27.5s on the testcase in PR209.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11099 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03 22:00:33 +00:00
Misha Brukman
7c791ed0a4
Hyphenate `target-dependent'
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11003 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-28 20:43:01 +00:00
Chris Lattner
7822c2ae07
Clean up #includes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10799 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:56:36 +00:00
Chris Lattner
c6646ebdb9
Remove use of ConstantExpr::getShift
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10792 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:10:58 +00:00
Chris Lattner
81ebc30089
Remove use of ConstantHandling
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10789 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 18:35:03 +00:00
Chris Lattner
8f90b005d6
Move llvm::ConstantFoldInstruction from VMCore to here, next to ConstantFoldTerminator
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10785 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 18:25:22 +00:00
Chris Lattner
2d11f167e6
Implement Transforms/ScalarRepl/phinodepromote.ll, which is an important
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case that the C/C++ front-end generates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10761 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 01:18:32 +00:00
Chris Lattner
f7703df496
Finegrainify namespacification
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10727 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09 06:12:26 +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
0f98e75adf
Generalize a special case to fix PR187
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10531 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 06:27:08 +00:00
Chris Lattner
abbc2dd779
Add new function
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10529 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 05:56:28 +00:00
Chris Lattner
dead99325c
Finegrainify namespacification
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Fix bug: LowerInvoke/2003-12-10-Crash.llx
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10382 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 20:22:42 +00:00
Chris Lattner
66ea98e85c
Finegrainify namespacification
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Fix bug: LoopSimplify/2003-12-10-ExitBlocksProblem.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10373 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 17:20:35 +00:00
Chris Lattner
010ba10032
Do not insert one entry PHI nodes in split exit blocks!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10348 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-09 23:12:55 +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
adbc0b5287
Spew symbolic types!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10110 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-20 18:23:14 +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
363ca610d1
Reorganize code for locality, improve comments
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9857 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-10 04:42:42 +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
Chris Lattner
0c7e8e17ff
Various cleanups and efficiency improvements
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9753 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-06 19:46:29 +00:00
Chris Lattner
e7a6663eb1
Yet more fixes for constant expr shifts
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9739 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-05 20:43:58 +00:00
Chris Lattner
d981f8af79
Further fixes for PR93
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9738 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-05 20:37:01 +00:00
John Criswell
700867bb69
Checking in Chris's suggestions:
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Added assert() to ensure symbol table is well formed.
Added code to remember the value that was found; resolving types can change
the symbol table and invalidate the value of the iterator.
Added comments to the ResolveTypes() function (mainly for my own benefit).
Please feel free to correct the comments if they are not accurate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9693 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-04 15:22:26 +00:00
Chris Lattner
35956558e2
Fix test: Linker/2003-10-27-LinkOncePromote.ll
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Fix PR58
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9530 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-27 16:39:39 +00:00