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Author SHA1 Message Date
Chris Lattner
d09a9a788b Allow tools with "consume after" options (like lli) to take more positional 
opts than they take directly.  Thanks to John C for pointing this problem
out to me!

llvm-svn: 22717
 2005-08-08 21:57:27 +00:00
Chris Lattner
64068eb7da Remove getImmediateForOpcode, which is now dead. 
Patch by Jim Laskey.

llvm-svn: 22716
 2005-08-08 21:34:13 +00:00
Chris Lattner
25388199a2 Add new immediate handling support for mul/div. 
Patch by Jim Laskey!

llvm-svn: 22715
 2005-08-08 21:33:23 +00:00
Chris Lattner
8e9dc31928 Add support for OR/XOR/SUB immediates that are handled with the new immediate 
way.  This allows ORI/ORIS pairs, for example.

llvm-svn: 22714
 2005-08-08 21:30:29 +00:00
Chris Lattner
fd0fe76ba6 Modify the ISD::AND opcode case to use new immediate constant predicates. 
Includes wider support for rotate and mask cases.

Patch by Jim Laskey.

I've requested that Jim add new regression tests the newly handled cases.

llvm-svn: 22712
 2005-08-08 21:24:57 +00:00
Chris Lattner
81e0e3e933 Modify the ISD::ADD opcode case to use new immediate constant predicates. 
Includes support for 32-bit constants using addi/addis.

Patch by Jim Laskey.

llvm-svn: 22711
 2005-08-08 21:21:03 +00:00
Chris Lattner
4c54dae243 Modify existing support functions to use new immediate constant predicates. 
Patch by Jim Laskey

llvm-svn: 22710
 2005-08-08 21:12:35 +00:00
Chris Lattner
3cc070cc36 Add support predicates for future immediate constant changes. 
Patch by Jim Laskey

llvm-svn: 22709
 2005-08-08 21:10:27 +00:00
Chris Lattner
f2267ed5c5 Move IsRunOfOnes to a more logical place and rename to a proper predicate form 
(lowercase isXXX).

Patch by Jim Laskey.

llvm-svn: 22708
 2005-08-08 21:08:09 +00:00
Nate Begeman
9a838678b0 Fix JIT encoding of ppc mfocrf instruction; the operands were reversed 
llvm-svn: 22707
 2005-08-08 20:04:52 +00:00
Chris Lattner
9f269e40c9 Use the new 'moveBefore' method to simplify some code. Really, which is 
easier to understand?  :)

llvm-svn: 22706
 2005-08-08 19:11:57 +00:00
Chris Lattner
d380d8412d Reject command lines that have too many positional arguments passed (e.g., 
'opt x y').  This fixes PR493.

Patch contributed by Owen Anderson!

llvm-svn: 22705
 2005-08-08 17:25:38 +00:00
Chris Lattner
14203e85b2 Not all constants are legal immediates in load/store instructions. 
llvm-svn: 22704
 2005-08-08 06:25:50 +00:00
Chris Lattner
ac86efb6a3 new testcase, not implemented yet 
llvm-svn: 22703
 2005-08-08 06:23:47 +00:00
Chris Lattner
c70bbc0c41 Implement LoopStrengthReduce/share_code_in_preheader.ll by having one 
rewriter for all code inserted into the preheader, which is never flushed.

llvm-svn: 22702
 2005-08-08 05:47:49 +00:00
Chris Lattner
03b6275fb8 It is better to not depend on CSE to share multiplies due to IV insertion. 
This testcase checks that only one mul is present in the output code, as it
should be.

llvm-svn: 22701
 2005-08-08 05:46:51 +00:00
Chris Lattner
7eecc6cb24 These are both implemented by a recent LSR patch 
llvm-svn: 22700
 2005-08-08 05:29:51 +00:00
Chris Lattner
9bfa6f8784 Implement a simple optimization for the termination condition of the loop. 
The termination condition actually wants to use the post-incremented value
of the loop, not a new indvar with an unusual base.

On PPC, for example, this allows us to compile
LoopStrengthReduce/exit_compare_live_range.ll to:

_foo:
        li r2, 0
.LBB_foo_1:     ; no_exit
        li r5, 0
        stw r5, 0(r3)
        addi r2, r2, 1
        cmpw cr0, r2, r4
        bne .LBB_foo_1  ; no_exit
        blr

instead of:

_foo:
        li r2, 1                ;; IV starts at 1, not 0
.LBB_foo_1:     ; no_exit
        li r5, 0
        stw r5, 0(r3)
        addi r5, r2, 1
        cmpw cr0, r2, r4
        or r2, r5, r5           ;; Reg-reg copy, extra live range
        bne .LBB_foo_1  ; no_exit
        blr

This implements LoopStrengthReduce/exit_compare_live_range.ll

llvm-svn: 22699
 2005-08-08 05:28:22 +00:00
Chris Lattner
24a0a43cb0 add new helper function 
llvm-svn: 22698
 2005-08-08 05:21:50 +00:00
Chris Lattner
9dae86a54d add a new helper method 
llvm-svn: 22697
 2005-08-08 05:21:33 +00:00
Chris Lattner
88e2d2ee6b Handle 64-bit constant exprs on 64-bit targets. 
llvm-svn: 22696
 2005-08-08 04:26:32 +00:00
Chris Lattner
579b20b747 All stats are "Number of ..." 
llvm-svn: 22694
 2005-08-07 20:02:04 +00:00
Chris Lattner
2c14cf7b74 Add some simple folds that occur in bitfield cases. Fix a minor bug in 
isHighOnes, where it would consider 0 to have high ones.

llvm-svn: 22693
 2005-08-07 07:03:10 +00:00
Chris Lattner
134ebd0801 Fix typoCVS: ---------------------------------------------------------------------- 
llvm-svn: 22692
 2005-08-07 07:00:52 +00:00
Chris Lattner
0c26a0b902 add a small simplification that can be exposed after promotion/expansion 
llvm-svn: 22691
 2005-08-07 05:00:44 +00:00
Chris Lattner
f4dd8c445c * Use the new PHINode::hasConstantValue method to simplify some code 
* Teach this code to move allocas out of the loop when tail call eliminating
  a call marked 'tail'.  This implements TailCallElim/move_alloca_for_tail_call.ll
* Do not perform this transformation if a call is marked 'tail' and if there
  are allocas that we cannot move out of the loop in #2.  Doing so would increase
  the stack usage of the function.  This implements fixes
  PR615 and TailCallElim/dont-tce-tail-marked-call.ll.

llvm-svn: 22690
 2005-08-07 04:27:41 +00:00
Chris Lattner
d670e5c88a New testcases for PR615 
llvm-svn: 22689
 2005-08-07 04:25:39 +00:00
Chris Lattner
983a415b6a Consolidate the GPOpt stuff to all use the Subtarget, instead of still 
depending on the command line option.  Now the command line option just
sets the subtarget as appropriate.  G5 opts will now default to on on
G5-enabled nightly testers among other machines.

llvm-svn: 22688
 2005-08-05 22:05:03 +00:00
Chris Lattner
158acab986 adjust to change in getSubtarget() api 
llvm-svn: 22687
 2005-08-05 21:54:27 +00:00
Chris Lattner
b5887385c4 Since getSubtarget() always provides a const Subtarget, dont' require the user 
to pass it in.  Also, since it always returns a non-null pointer, make it
return a reference instead for easier use.

llvm-svn: 22686
 2005-08-05 21:53:21 +00:00
Chris Lattner
431b8d80bd Enable gp optimizations by default when available, even when a target triple 
is available, since the target triple doesn't specify whether to use gpopts
or not.

llvm-svn: 22685
 2005-08-05 21:25:13 +00:00
Chris Lattner
d01cf9cfd0 teach TestRunner about prcontext 
llvm-svn: 22683
 2005-08-05 19:48:29 +00:00
Chris Lattner
8a9f9f4735 two simple testcases loopreduce should handle but does not yet currently 
llvm-svn: 22682
 2005-08-05 19:47:39 +00:00
Chris Lattner
11fc319b5d add a note 
llvm-svn: 22681
 2005-08-05 19:18:32 +00:00
Chris Lattner
96ad31321a Change FindEarliestCallSeqEnd (used by libcall insertion) to use a set to 
avoid revisiting nodes more than once.  This eliminates a source of
potentially exponential behavior.  For a small function in 191.fma3d
(hexah_stress_divergence_), this speeds up isel from taking > 20mins to
taking 0.07s.

llvm-svn: 22680
 2005-08-05 18:10:27 +00:00
Chris Lattner
1095dc94a9 Fix a use-of-dangling-pointer bug, from the introduction of SrcValue's. 
llvm-svn: 22679
 2005-08-05 16:55:31 +00:00
Chris Lattner
cabdc34563 Fix a latent bug in the libcall inserter that was exposed by Nate's patch 
yesterday.  This fixes whetstone and a bunch of programs in the External tests.

llvm-svn: 22678
 2005-08-05 16:23:57 +00:00
Chris Lattner
8c636bf8b2 don't crash when running the PPC backend on non-ppc hosts without specifying 
a subtarget.

llvm-svn: 22677
 2005-08-05 16:17:22 +00:00
Chris Lattner
6e709c1318 PHINode::hasConstantValue should never return the PHI itself, even if the 
PHI is its only operand.

llvm-svn: 22676
 2005-08-05 15:37:31 +00:00
Chris Lattner
1749aaa5e6 Fix an iterator invalidation problem when we decide a phi has a constant value 
llvm-svn: 22675
 2005-08-05 15:34:10 +00:00
Chris Lattner
11e7a5eda7 Make sure to clean CastedPointers after casts are potentially deleted. 
This fixes LSR crashes on 301.apsi, 191.fma3d, and 189.lucas

llvm-svn: 22673
 2005-08-05 01:30:11 +00:00
Chris Lattner
9f9c260b8c now that hasConstantValue defaults to only returning values that dominate 
the PHI node, this ugly code can vanish.

llvm-svn: 22672
 2005-08-05 01:04:30 +00:00
Chris Lattner
37774affb1 Invoke instructions do not dominate all successors 
llvm-svn: 22671
 2005-08-05 01:03:27 +00:00
Chris Lattner
6f58350daf Now that hasConstantValue is more careful w.r.t. returning values that only 
dominate the PHI node, this code can go away.  This also makes passes more
aggressive, e.g. implementing Transforms/CondProp/phisimplify2.ll

llvm-svn: 22670
 2005-08-05 01:02:04 +00:00
Chris Lattner
bcd8d2c6e5 Use the bool argument to hasConstantValue to decide whether the client is 
prepared to deal with return values that do not dominate the PHI.  If we
cannot prove that the result dominates the PHI node, do not return it if
the client can't cope.

llvm-svn: 22669
 2005-08-05 01:00:58 +00:00
Chris Lattner
f4c5ad8d61 new testcase that condprop should handle. The PHI node becomes useless 
after threading the branch, because both operands are the same value.

llvm-svn: 22668
 2005-08-05 00:59:55 +00:00
Chris Lattner
257efb2ad3 This code can handle non-dominating instructions 
llvm-svn: 22667
 2005-08-05 00:57:45 +00:00
Chris Lattner
1d8b24878f Mark hasConstantValue as a const method 
llvm-svn: 22666
 2005-08-05 00:49:06 +00:00
Nate Begeman
0a94dec78a Add an extra parameter that Chris requested 
llvm-svn: 22665
 2005-08-04 23:50:43 +00:00
Nate Begeman
b392321cae Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization into 
BasicBlock's removePredecessor routine.  This requires shuffling around
the definition and implementation of hasContantValue from Utils.h,cpp into
Instructions.h,cpp

llvm-svn: 22664
 2005-08-04 23:24:19 +00:00