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1afcace3a3
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8121 Commits

Author SHA1 Message Date
Chris Lattner
1afcace3a3 Land the long talked about "type system rewrite" patch. This 
patch brings numerous advantages to LLVM.  One way to look at it
is through diffstat:
 109 files changed, 3005 insertions(+), 5906 deletions(-)

Removing almost 3K lines of code is a good thing.  Other advantages
include:

1. Value::getType() is a simple load that can be CSE'd, not a mutating
   union-find operation.
2. Types a uniqued and never move once created, defining away PATypeHolder.
3. Structs can be "named" now, and their name is part of the identity that
   uniques them.  This means that the compiler doesn't merge them structurally
   which makes the IR much less confusing.
4. Now that there is no way to get a cycle in a type graph without a named
   struct type, "upreferences" go away.
5. Type refinement is completely gone, which should make LTO much MUCH faster
   in some common cases with C++ code.
6. Types are now generally immutable, so we can use "Type *" instead 
   "const Type *" everywhere.

Downsides of this patch are that it removes some functions from the C API,
so people using those will have to upgrade to (not yet added) new API.  
"LLVM 3.0" is the right time to do this.

There are still some cleanups pending after this, this patch is large enough
as-is.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134829 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-09 17:41:24 +00:00
Lang Hames
bd1828c6ed Added recognition for signed add/sub/mul with overflow intrinsics to GVN as per Chris and Frits suggestion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134777 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-09 00:25:11 +00:00
Bob Wilson
e2e86f6bca Reapply a fixed version of r133285. 
This tightens up checking for overflow in alloca sizes, based on feedback
from Duncan and John about the change in r132926.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134749 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-08 22:09:33 +00:00
Benjamin Kramer
11b4c952a6 Remove unused copy of UpdateInlinedAtInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134720 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-08 19:32:06 +00:00
Devang Patel
2cf158ec4b Refactor. It is inliner's responsibility to update line number information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134708 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-08 18:01:31 +00:00
Lang Hames
1fb0955cab Make GVN look through extractvalues for recognised intrinsics. GVN can then CSE ops that match values produced by the intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134677 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-08 01:50:54 +00:00
Devang Patel
a4acb008cb Use DBG_VALUE location while inserting DBG_VALUE during alloca promotion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134568 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-07 00:05:58 +00:00
Jakub Staszak
447c40c402 Fix a bug in the "expect" intrinsic lowering. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134566 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 23:50:16 +00:00
Devang Patel
4fd3c5957e Handle cases where multiple dbg.declare and dbg.value intrinsics are tied to one alloca. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134549 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 22:06:11 +00:00
Devang Patel
231a5ab746 Simplify. Consolidate dbg.declare handling in AllocaPromoter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134538 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 21:09:55 +00:00
Andrew Trick
17f91d21a7 indvars -disable-iv-rewrite: ExprToMap lives in Pass data, so be more 
careful about referencing values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134537 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 21:07:10 +00:00
Andrew Trick
037d1c0c7e indvars -disable-iv-rewrite: Added SimplifyCongruentIVs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134530 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 20:50:43 +00:00
Tobias Grosser
a3574fb7e5 LICM: Remove trailing white spaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134521 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 19:20:02 +00:00
Tobias Grosser
df7102b7d6 LICM: Do not loose alignment on promotion 
The promotion code lost any alignment information, when hoisting loads and
stores out of the loop. This lead to incorrect aligned memory accesses. We now
use the largest alignment we can prove to be correct.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134520 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 19:19:55 +00:00
Jakub Staszak
9da9934e27 Introduce "expect" intrinsic instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134516 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 18:22:43 +00:00
Devang Patel
c5ecbdc189 Preserve debug loc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134441 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-05 21:48:22 +00:00
Andrew Trick
e0dc2faaa0 indvars -disable-iv-rewrite: avoid multiple IVs in weird cases. 
Putting back the helper that I removed on 7/1 to do this right.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134423 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-05 18:19:39 +00:00
Benjamin Kramer
fc87cdc1f4 PR10267: Don't combine an equality compare with an AND into an inequality compare when the AND has more than one use. 
This can pessimize code, inequalities are generally more expensive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134379 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-04 20:16:36 +00:00
Andrew Trick
4b02915386 indvars -disable-iv-rewrite: bug fix involving weird geps and related cleanup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134306 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-02 02:34:25 +00:00
Owen Anderson
f1ac465b67 Generalize @llvm.ctlz, @llvm.cttz, and @llvm.ctpop to work on vectors of integers, and fix the one optimization pass that I'm aware of that needs updating for this. At least one current target, ARM NEON, can implement these operations on vectors directly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134265 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-01 21:52:38 +00:00
Nick Lewycky
394d1f1948 Fix likely typo, reduce number of instruction name collisions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134235 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-01 06:27:03 +00:00
Rafael Espindola
77a2c372fa Add r134057 back, but splice the predecessor after the successors phi 
nodes.

Original message:
Let simplify cfg simplify bb with only debug and lifetime intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134182 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 20:14:24 +00:00
Andrew Trick
6e0ce24e0c indvars -disable-iv-rewrite: handle cloning binary operators that cannot overflow. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134177 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 19:02:17 +00:00
Andrew Trick
60ac719c85 indvars -disable-iv-rewrite: handle an edge case involving identity phis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134124 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 01:27:23 +00:00
Andrew Trick
cc359d9fa2 indvars -disable-iv-rewrite: insert new trunc instructions carefully. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134112 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-29 23:03:57 +00:00
Chad Rosier
ce77aa3edc Temporarily revert r134057: "Let simplify cfg simplify bb with only debug and 
lifetime intrinsics" due to buildbot failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134071 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-29 16:22:11 +00:00
Rafael Espindola
0fb7dcd48f Let simplify cfg simplify bb with only debug and lifetime intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134057 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-29 05:25:47 +00:00
Andrew Trick
11745d4c02 indvars -disable-iv-rewrite: just because SCEV ignores casts doesn't 
mean they can be removed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134054 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-29 03:13:40 +00:00
Andrew Trick
99a92f67c7 cleanup: misleading comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134010 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-28 16:45:04 +00:00
Andrew Trick
5e7645be4c SCEVExpander: give new insts a name that identifies the reponsible pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133992 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-28 05:07:32 +00:00
Andrew Trick
a5d950f673 whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133991 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-28 05:04:16 +00:00
Nick Lewycky
89991d4413 Fix typo in comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133990 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-28 03:57:31 +00:00
Andrew Trick
56caa09808 indvars --disable-iv-rewrite: sever ties with IVUsers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133988 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-28 03:01:46 +00:00
Andrew Trick
15832f6177 indvars --disable-iv-rewrite: Defer evaluating s/zext until SCEV 
evaluates all other IV exprs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133982 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-28 02:49:20 +00:00
Andrew Trick
156d460c75 indvars -disable-iv-rewrite: run RLEV after SimplifyIVUsers for 
a bit more control over the order SCEVs are evaluated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133959 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-27 23:17:44 +00:00
Jakub Staszak
f227b50a8e Calculate GetBestDestForJumpOnUndef correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133946 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-27 21:51:12 +00:00
Nick Lewycky
9174d5c738 Teach one piece of scalarrepl to handle lifetime markers. When transforming an 
alloca that only holds a copy of a global and we're going to replace the users
of the alloca with that global, just nuke the lifetime intrinsics. Part of
PR10121.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133905 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-27 05:40:02 +00:00
Nick Lewycky
99e0b2a8df Move onlyUsedByLifetimeMarkers to ValueTracking so that it can be used by other 
passes as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133904 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-27 04:20:45 +00:00
Eli Friedman
00805fae5b PR10180: Fix a instcombine crash with FP vectors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133756 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-23 20:40:23 +00:00
Jay Foad
95c3e48f95 Reinstate r133513 (reverted in r133700) with an additional fix for a 
-Wshorten-64-to-32 warning in Instructions.h.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133708 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-23 09:09:15 +00:00
Eric Christopher
e59fbc04ad Revert r133513: 
"Reinstate r133435 and r133449 (reverted in r133499) now that the clang
self-hosted build failure has been fixed (r133512)."

Due to some additional warnings.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133700 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-23 06:24:52 +00:00
Devang Patel
a098bf1239 Set debug loc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133636 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-22 19:52:36 +00:00
Jay Foad
267010864e Replace the existing forms of ConstantArray::get() with a single form 
that takes an ArrayRef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133615 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-22 09:24:39 +00:00
Andrew Trick
4417e537b6 IVUsers no longer needs to record the phis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133518 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-21 15:43:52 +00:00
Benjamin Kramer
9ee714789e Remove unused variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133514 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-21 14:58:30 +00:00
Jay Foad
cd35e09a4a Reinstate r133435 and r133449 (reverted in r133499) now that the clang 
self-hosted build failure has been fixed (r133512).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133513 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-21 10:33:19 +00:00
Jay Foad
69254f67a5 Don't use PN->replaceUsesOfWith() to change a PHINode's incoming blocks, 
because it won't work after my phi operand changes, because the incoming
blocks will no longer be Uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133512 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-21 10:02:43 +00:00
Andrew Trick
2fabd464ae indvars -disable-iv-rewrite: Adds support for eliminating identity 
ops.

This is a rewrite of the IV simplification algorithm used by
-disable-iv-rewrite. To avoid perturbing the default mode, I
temporarily split the driver and created SimplifyIVUsersNoRewrite. The
idea is to avoid doing opcode/pattern matching inside
IndVarSimplify. SCEV already does it. We want to optimize with the
full generality of SCEV, but optimize def-use chains top down on-demand rather
than rewriting the entire expression bottom-up. This was easy to do
for operations that SCEV can prove are identity function. So we're now
eliminating bitmasks and zero extends this way.

A result of this rewrite is that indvars -disable-iv-rewrite no longer
requires IVUsers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133502 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-21 03:22:38 +00:00
Chad Rosier
a88a0ca808 Revert r133435 and r133449 to appease buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133499 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-21 02:09:03 +00:00
Dan Gohman
c4bcd4d964 Completely short-circuit out ARC optimization if the ARC runtime 
functions do not appear in the module.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133478 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-20 23:20:43 +00:00