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Author SHA1 Message Date
Evan Cheng
0a35c35153 Silence a compiler warning. 
llvm-svn: 55087
 2008-08-20 23:36:48 +00:00
Evan Cheng
c55f07023a First cut, un-optimized (and untested) fast isel lowering of GetElementPtrInst. 
llvm-svn: 55085
 2008-08-20 22:45:34 +00:00
Chris Lattner
7a310366a6 Add a new ConstantExpr::getWithOperands that takes any array of operands 
instead of requiring an std::vector.

llvm-svn: 55084
 2008-08-20 22:27:40 +00:00
Dan Gohman
d79f723519 Remove an obsolete todo comment. 
llvm-svn: 55080
 2008-08-20 21:47:28 +00:00
Dan Gohman
74bfad70e1 Factor the code for determining the target-specific instruction 
namespace out of the isel emitters and into common code.

llvm-svn: 55079
 2008-08-20 21:45:57 +00:00
Dan Gohman
411cc551cb Move the handling of ANY_EXTEND, SIGN_EXTEND_INREG, and TRUNCATE 
out of X86ISelDAGToDAG.cpp C++ code and into tablegen code.
Among other things, using tablegen for these things makes them
friendlier to FastISel.

Tablegen can handle the case of i8 subregs on x86-32, but currently
the C++ code for that case uses MVT::Flag in a tricky way, and it
happens to schedule better in some cases. So for now, leave the
C++ code in place to handle the i8 case on x86-32.

llvm-svn: 55078
 2008-08-20 21:27:32 +00:00
Dan Gohman
50af19179b Simplify the BuildMI calls even more. 
llvm-svn: 55077
 2008-08-20 21:10:53 +00:00
Dan Gohman
ddebe95287 Simplify FastISel's constructor argument list, make the FastISel 
class hold a MachineRegisterInfo member, and make the
MachineBasicBlock be passed in to SelectInstructions rather
than the FastISel constructor.

llvm-svn: 55076
 2008-08-20 21:05:57 +00:00
Dan Gohman
d8324c4066 Dump the instruction that foiled ISel even when -debug is not used. 
llvm-svn: 55075
 2008-08-20 20:47:32 +00:00
Bill Wendling
42a2073ed4 Don't hoist instructions that define a physical register. 
llvm-svn: 55074
 2008-08-20 20:32:05 +00:00
Dan Gohman
96efa9606f Make more use of the BuildMI API. 
llvm-svn: 55072
 2008-08-20 18:16:32 +00:00
Dan Gohman
3606d17592 Minor code reorganization. 
llvm-svn: 55071
 2008-08-20 18:10:48 +00:00
Dan Gohman
44da988220 Minor whitespace cleanup. 
llvm-svn: 55070
 2008-08-20 18:09:38 +00:00
Dan Gohman
9e5e42e0d5 Fix 80 column violation. 
llvm-svn: 55069
 2008-08-20 18:09:02 +00:00
Evan Cheng
5ff34fa3b4 Kill off SimpleBBISel, it's replaced by FastISel. 
llvm-svn: 55067
 2008-08-20 17:50:32 +00:00
Chris Lattner
c9fdd97035 Move the fast-path (<=i64) cases of various APInt methods inline 
and the slow-path cases out of line.  This speeds up instcombine
a bit in real world cases.  Patch contributed by m-s.

llvm-svn: 55063
 2008-08-20 17:02:31 +00:00
Dan Gohman
00ddda96c9 Disable DAGCombine's alignment inference in "fast" codegen mode. 
llvm-svn: 55059
 2008-08-20 16:30:28 +00:00
Dan Gohman
e1a5bc775e Change the FoldingSetNodeID usage for objects which carry 
alignment and volatility information, such as loads and
stores, to reduce the number of integer values added to
the FoldingSetNodeID.

llvm-svn: 55058
 2008-08-20 15:58:01 +00:00
Dan Gohman
2b904916b2 Clean up a dead return missed in r55055. 
llvm-svn: 55057
 2008-08-20 15:54:46 +00:00
Dan Gohman
ebba07cccf Tablegen generated code already tests the opcode value, so it's not 
necessary to use dyn_cast in these predicates.

llvm-svn: 55055
 2008-08-20 15:24:22 +00:00
Dan Gohman
22c225c022 Use BitVector instead of std::vector<unsigned char>. 
llvm-svn: 55054
 2008-08-20 14:58:41 +00:00
Dan Gohman
9a43334166 It's not necessary to check if a value is null before delete[]. 
llvm-svn: 55053
 2008-08-20 14:55:37 +00:00
Dan Gohman
a5921219e5 Use cast instead of dyn_cast. 
llvm-svn: 55052
 2008-08-20 14:50:24 +00:00
Dan Gohman
7f2b41c9e2 Avoid an empty-if-body warning in release builds. 
llvm-svn: 55050
 2008-08-20 14:00:56 +00:00
Dan Gohman
2555c4a2ca Fix indentation. 
llvm-svn: 55049
 2008-08-20 13:50:12 +00:00
Dan Gohman
e409b06d46 Fix comment spacing. 
llvm-svn: 55047
 2008-08-20 13:46:21 +00:00
Mon P Wang
e5aefd3967 Fixed shuffle optimizations to handle non power of 2 vectors 
llvm-svn: 55035
 2008-08-20 02:23:25 +00:00
Dan Gohman
ed5e30b819 Fix the string for MVT::isVoid. 
llvm-svn: 55034
 2008-08-20 01:44:30 +00:00
Dan Gohman
d0da06c817 Fix FastISel to recognize that the last block in the function does 
not have a fall-through successor.

llvm-svn: 55033
 2008-08-20 01:17:01 +00:00
Dan Gohman
472f4b49b6 Fix a leak in the FastISel code that Chris pointed out. 
llvm-svn: 55031
 2008-08-20 00:56:17 +00:00
Dan Gohman
bb28e0fc6d Add a -march line for this test, and run it on x86-64 too for fun. 
llvm-svn: 55030
 2008-08-20 00:56:07 +00:00
Dale Johannesen
69c9d47dce Add remaining 64-bit atomic patterns for x86-64. 
llvm-svn: 55029
 2008-08-20 00:48:50 +00:00
Dan Gohman
023bedddc4 Add support for running SelectionDAG if FastISel fails. This is under 
a command-line option, so that the default behavior is an abort, which
is useful for exposing code that isn't supported yet.

llvm-svn: 55028
 2008-08-20 00:47:54 +00:00
Dan Gohman
f298c31918 Fix FastISel to recognize unhandled operands, such as constants 
that aren't available as virtual registers (for now).

llvm-svn: 55026
 2008-08-20 00:35:17 +00:00
Chris Lattner
63d8801e51 ll printer prints each zeroinit on the same line now, update regex 
llvm-svn: 55025
 2008-08-20 00:33:57 +00:00
Bill Wendling
ab390189dc Revert r55018 and apply the correct "fix" for the 64-bit sub_and_fetch atomic. 
Just expand it like the other X-bit sub_and_fetches.

llvm-svn: 55023
 2008-08-20 00:28:16 +00:00
Evan Cheng
4fa90a1d3e Get rid of a couple of dynamic_cast. 
llvm-svn: 55022
 2008-08-20 00:28:12 +00:00
Dan Gohman
455abe7436 Add FastISel support for floating-point operations. 
llvm-svn: 55021
 2008-08-20 00:23:20 +00:00
Dan Gohman
ce636764de Add FastISel support for several more binary operators. 
llvm-svn: 55020
 2008-08-20 00:11:48 +00:00
Bill Wendling
ab7c8c091e Add support for the __sync_sub_and_fetch atomics and friends for X86. The code 
was already present, but not hooked up to anything.

llvm-svn: 55018
 2008-08-19 23:09:18 +00:00
Dan Gohman
d5c84e8061 Fast-isel is now *minimally* functional. Add a testcase to 
demonstrate the extent of its capabilities. Note that it
only attempts to operate on one of the blocks in this
testcase.

llvm-svn: 55016
 2008-08-19 22:37:59 +00:00
Dan Gohman
1b18b91296 Add code to call FastISel, and a command-line option to enable it. 
llvm-svn: 55015
 2008-08-19 22:33:34 +00:00
Dan Gohman
25efe2087b Support unconditional fall-through branches in FastISel. 
llvm-svn: 55014
 2008-08-19 22:31:46 +00:00
Owen Anderson
5325218d4b Allow the fast-path spilling code to attempt folding, but still leaving out remat and splitting. 
llvm-svn: 55012
 2008-08-19 22:12:11 +00:00
Dan Gohman
b1ba73eeed Instantiate FastISel for X86. 
llvm-svn: 55011
 2008-08-19 21:45:35 +00:00
Dan Gohman
36e732b8fc The X86 target will soon have an implementation of createFastISel. 
llvm-svn: 55010
 2008-08-19 21:32:53 +00:00
Dan Gohman
08c860eb56 Add a TargetLowering hook for creating a FastISel object. 
llvm-svn: 55009
 2008-08-19 21:26:29 +00:00
Dan Gohman
ebba5dd8be For now, restrict FastISel to instructions that only involve one 
register class.

llvm-svn: 55008
 2008-08-19 20:58:14 +00:00
Dan Gohman
69eb9fb38e Factor out the code to scan an instruction's operands into a 
helper function.

llvm-svn: 55007
 2008-08-19 20:56:30 +00:00
Dan Gohman
7a23fc0fb0 Use the BuildMI overload that sets up a destination register 
instead of the one that doesn't and then adding it manually.

llvm-svn: 55006
 2008-08-19 20:46:54 +00:00