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Author SHA1 Message Date
Dale Johannesen
79477af98a Mark math lib intrinsics readonly, on the grounds 
that they read the rounding mode.  This is conservatively
correct, which they weren't before.  We can do more
optimization on these if we actually model the rounding
mode.

llvm-svn: 55860
 2008-09-05 21:49:30 +00:00
Duncan Sands
fdfa2d24fe Delete the removeCallEdgeTo callgraph method, 
because it does not maintain a correct list
of callsites.  I discovered (see following
commit) that the inliner will create a wrong
callgraph if it is fed a callgraph with
correct edges but incorrect callsites.  These
were created by Prune-EH, and while it wasn't
done via removeCallEdgeTo, it could have been
done via removeCallEdgeTo, which is an accident
waiting to happen.  Use removeCallEdgeFor
instead.

llvm-svn: 55859
 2008-09-05 21:43:04 +00:00
Duncan Sands
b39cf2ff6c Prevent our own passes from promoting this to 
readonly.

llvm-svn: 55858
 2008-09-05 21:34:32 +00:00
Dan Gohman
930d0be24c Fix X86FastISel's shift and select code to reject illegal types. 
llvm-svn: 55857
 2008-09-05 21:27:34 +00:00
Dale Johannesen
6b48790d88 Add the next limited-precision expansion. 
llvm-svn: 55856
 2008-09-05 21:27:19 +00:00
Dan Gohman
28e33e92e4 Fix the opcodes used by X86FastISel for shifts and conditional moves. 
llvm-svn: 55855
 2008-09-05 21:13:04 +00:00
Evan Cheng
5fd19547f4 Factor out code that emits load and store instructions. 
llvm-svn: 55854
 2008-09-05 21:00:03 +00:00
Owen Anderson
7866b1c4c3 Rename method. 
llvm-svn: 55853
 2008-09-05 20:49:33 +00:00
Evan Cheng
1f4b84cad0 Fix test. 
llvm-svn: 55849
 2008-09-05 20:04:37 +00:00
Dan Gohman
b22e9b050f FastISel support for AND and OR with type i1. 
llvm-svn: 55846
 2008-09-05 18:44:22 +00:00
Dale Johannesen
116163ab21 Add hooks for other intrinsics to get low-precision expansions. 
llvm-svn: 55845
 2008-09-05 18:38:42 +00:00
Dan Gohman
0be4bca4b6 X86FastISel support for shifts and conditional moves. 
llvm-svn: 55844
 2008-09-05 18:30:08 +00:00
Dan Gohman
525caf83e5 FastISel support for ConstantExprs. 
llvm-svn: 55843
 2008-09-05 18:18:20 +00:00
Dan Gohman
13d7484b4a Revert r55817. It broke PIC. FastISel will need to find a different 
approach here.

llvm-svn: 55842
 2008-09-05 18:13:01 +00:00
Evan Cheng
10a350fa89 If SSE2 is available, x86 should pass first 3 f32/f64 arguments in XMM registers for fastcc calls. 
llvm-svn: 55840
 2008-09-05 17:24:07 +00:00
Evan Cheng
339a06f29e Add a variant of AnalyzeCallOperands that can be used by fast isel. 
llvm-svn: 55838
 2008-09-05 16:59:26 +00:00
Duncan Sands
b63fde1edb Use removeAllCalledFunctions rather than removing 
edges one by one by hand.

llvm-svn: 55836
 2008-09-05 14:56:53 +00:00
Duncan Sands
c568792f0a Remove trailing whitespace. 
llvm-svn: 55835
 2008-09-05 12:37:12 +00:00
Duncan Sands
c069767456 Strip trailing whitespace. 
llvm-svn: 55834
 2008-09-05 12:31:56 +00:00
Duncan Sands
8de0cd8f10 Make this pass return that it made a change if 
it modifies a functions attributes.

llvm-svn: 55831
 2008-09-05 09:08:37 +00:00
Duncan Sands
566e0f1053 "Fix" PR2762. The testcase now crashes codegen 
elsewhere due to a missing pattern for
v2f64 = sint_to_fp v2i32.  That is PR2687.

llvm-svn: 55828
 2008-09-05 08:13:35 +00:00
Dan Gohman
a3987ed4e2 Fix a search+replace-o. 
llvm-svn: 55824
 2008-09-05 01:58:21 +00:00
Dale Johannesen
ce63ed5b47 Add -flimit-float-precision to enable some faster, 
but less accurate (non-IEEE) code sequences for
certain math library functions.  Add the first of
several such expansions.  Don't worry, if you don't
turn it on it won't affect you.

llvm-svn: 55823
 2008-09-05 01:48:15 +00:00
Dan Gohman
29cba19a2a Check a comparion's operand type for legality before 
expanding its operands.

llvm-svn: 55820
 2008-09-05 01:33:56 +00:00
Dan Gohman
121baa1723 Fix X86FastISel code for comparisons and conditional branches 
to check the result of getRegForValue before using it, and
to check for illegal operand types.

llvm-svn: 55819
 2008-09-05 01:15:35 +00:00
Dan Gohman
e64326ff34 FastISel support for unreachable. 
llvm-svn: 55818
 2008-09-05 01:08:41 +00:00
Dan Gohman
fcd2cbd985 In FastISel mode, the scheduler may be invoked multiple times 
in the same block. Fix the entry-block handling to only run at
at the beginning of the entry block, and not any other times.

llvm-svn: 55817
 2008-09-05 01:07:48 +00:00
Dan Gohman
783f38e056 X86FastISel support for conditional branches. 
llvm-svn: 55816
 2008-09-05 01:06:14 +00:00
Owen Anderson
6d5b72d45a Add initial support for selecting constant materializations that require constant 
pool loads on X86 in fast isel.  This isn't actually used yet.

llvm-svn: 55814
 2008-09-05 00:06:23 +00:00
Dan Gohman
88c3de638e X86FastISel support for ICmpInst and FCmpInst. 
llvm-svn: 55811
 2008-09-04 23:26:51 +00:00
Devang Patel
b85cf5664d update. 
llvm-svn: 55809
 2008-09-04 23:10:26 +00:00
Devang Patel
23d60ba4ed Document function notes. 
llvm-svn: 55808
 2008-09-04 23:05:13 +00:00
Evan Cheng
bd15e330d0 For whatever the reason, x86 CallingConv::Fast (i.e. fastcc) was not passing scalar arguments in registers. This patch defines a new fastcc CC which is slightly different from the FastCall CC. In addition to passing integer arguments in ECX and EDX, it also specify doubles are passed in 8-byte slots which are 8-byte aligned (instead of 4-byte aligned). This avoids a potential performance hazard where doubles span cacheline boundaries. 
llvm-svn: 55807
 2008-09-04 22:59:58 +00:00
Devang Patel
3d42ac68df A loop may be unswitched multiple times. Reconstruct dom info. at the end. 
llvm-svn: 55806
 2008-09-04 22:43:59 +00:00
Dale Johannesen
51f5f5dfd9 Adjust tests to expect new math intrinsics to be 
emitted only when errno is not in use.

llvm-svn: 55797
 2008-09-04 21:24:28 +00:00
Devang Patel
f3770334a9 If function notes say optimize for size, then adjust alignment. 
llvm-svn: 55794
 2008-09-04 21:03:41 +00:00
Dan Gohman
1ffb4ad3a8 Add an include of SmallSet.h. 
llvm-svn: 55793
 2008-09-04 20:49:27 +00:00
Devang Patel
25b88b66e8 Initialize loop data first. 
llvm-svn: 55792
 2008-09-04 20:36:36 +00:00
Duncan Sands
bbfa97b8b0 Neaten this up a bit. No functionality change. 
llvm-svn: 55789
 2008-09-04 19:16:20 +00:00
Devang Patel
c96f319a3c Do not unswitch if the function notes say we're optimizing this function for size. 
llvm-svn: 55786
 2008-09-04 18:55:13 +00:00
Andrew Lenharth
4523deb38b try to seperate the mechanism into something others can use 
llvm-svn: 55785
 2008-09-04 18:51:26 +00:00
Dale Johannesen
8a3d70fe55 Adjust libcalls tests to expect intrinsic for exp2 
llvm-svn: 55784
 2008-09-04 18:44:20 +00:00
Dale Johannesen
bbd799c544 Add intrinsic forms of pow and exp2. The non-intrinsic 
forms remain to handle older IR files, but will go away soon.

llvm-svn: 55781
 2008-09-04 18:30:46 +00:00
Dan Gohman
e1f9be27bc Tidy up several unbeseeming casts from pointer to intptr_t. 
llvm-svn: 55779
 2008-09-04 17:05:41 +00:00
Owen Anderson
cd3ee9198d Fix the ordering of operands to the store (inverted relative to LLVM IR), and fix the testcase. 
llvm-svn: 55777
 2008-09-04 16:48:33 +00:00
Dan Gohman
7ee14837e6 Clean up uses of TargetLowering::getTargetMachine. 
llvm-svn: 55769
 2008-09-04 15:39:15 +00:00
Andrew Lenharth
9e27a7b4b0 cleanup as per Duncan's review 
llvm-svn: 55766
 2008-09-04 14:34:22 +00:00
Owen Anderson
35485dbae3 Add a first attempt at implementing stores for X86 fast isel using target hooks. 
Dan or Evan, please review.

llvm-svn: 55764
 2008-09-04 07:08:58 +00:00
Evan Cheng
9c728a557d Load from GV stub should be locally CSE'd. 
llvm-svn: 55763
 2008-09-04 06:18:33 +00:00
Evan Cheng
dcce925eb1 Fix an overly strict assertion. Source register of a copy may not be killed, it may be killed by an implicit super-register use. 
llvm-svn: 55762
 2008-09-04 05:43:55 +00:00