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331 Commits

Author SHA1 Message Date
Chad Rosier
053e69ad57 Add fast-isel stats to determine who's doing all the work, the 
target-independent selector or the target-specific selector.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144833 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-16 21:05:28 +00:00
Chad Rosier
22b34cce4d GEPs with all zero indices are trivially coalesced by fast-isel. For example, 
%arrayidx135 = getelementptr inbounds [4 x [4 x [4 x [4 x i32]]]]* %M0, i32 0, i64 0
%arrayidx136 = getelementptr inbounds [4 x [4 x [4 x i32]]]* %arrayidx135, i32 0, i64 %idxprom134

Prior to this commit, the GEP instruction that defines %arrayidx136 thought that 
%arrayidx135 was a trivial kill.  The GEP that defines %arrayidx135 doesn't 
generate any code and thus %M0 gets folded into the second GEP.  Thus, we need
to look through GEPs with all zero indices.
rdar://10443319

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144730 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-15 23:34:05 +00:00
Dan Gohman
9e15d658c9 Fix a thinko that Nick noticed. The previous code actually worked as 
intended, but only by accident.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141779 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-12 15:56:56 +00:00
Devang Patel
9aee335c23 Directly point debug info to the stack slot of the arugment, instead of trying to keep track of vreg in which it the arugment is copied. The LiveDebugVariable can keep track of variable's ranges. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139330 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-08 22:59:09 +00:00
Ivan Krasin
74af88a666 FastISel: avoid function calls between the materialization of the constant and its use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137993 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-18 22:06:10 +00:00
Devang Patel
497a397f3e Revert r135423. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135454 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-19 00:28:24 +00:00
Jeffrey Yasskin
3ba292dbc2 Add APInt(numBits, ArrayRef<uint64_t> bigVal) constructor to prevent future ambiguity 
errors like the one corrected by r135261.  Migrate all LLVM callers of the old
constructor to the new one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135431 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-18 21:45:40 +00:00
Devang Patel
1360bc8eb0 During bottom up fast-isel, instructions emitted to materalize registers are at top of basic block and do not have debug location. This may misguide debugger while entering the basic block and sometimes debugger provides semi useful view of current location to developer by picking up previous known location as current location. Assign a sensible location to the first instruction in a basic block, if it does not have one location derived from source file, so that debugger can provide meaningful user experience to developers in edge cases. 
[take 2]


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135423 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-18 20:55:23 +00:00
Chris Lattner
db125cfaf5 land David Blaikie's patch to de-constify Type, with a few tweaks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135375 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-18 04:54:35 +00:00
Jay Foad
fc6d3a4986 Convert InsertValueInst and ExtractValueInst APIs to use ArrayRef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135040 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-13 10:26:04 +00:00
Devang Patel
272511f518 Revert r133953 for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134116 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-29 23:50:13 +00:00
Evan Cheng
e837dead3c - Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo and 
sink them into MC layer.
- Added MCInstrInfo, which captures the tablegen generated static data. Chang
TargetInstrInfo so it's based off MCInstrInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134021 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-28 19:10:37 +00:00
Devang Patel
016c5829a5 During bottom up fast-isel, instructions emitted to materalize registers are at top of basic block and do not have debug location. This may misguide debugger while entering the basic block and sometimes debugger provides semi useful view of current location to developer by picking up previous known location as current location. Assign a sensible location to the first instruction in a basic block, if it does not have one location derived from source file, so that debugger can provide meaningful user experience to developers in edge cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133953 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-27 22:32:04 +00:00
Devang Patel
8594d429e0 Handle debug info for i128 constants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133821 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-24 20:46:11 +00:00
Eli Friedman
0b4d96baec PR10077: fix fast-isel of extractvalue of aggregate constants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132676 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-06 05:46:34 +00:00
Eli Friedman
76927d7303 Rewrite fast-isel integer cast handling to handle more cases, and to be simpler and more consistent. 
The practical effects here are that x86-64 fast-isel can now handle trunc from i8 to i1, and ARM fast-isel can handle many more constructs involving integers narrower than 32 bits (including loads, stores, and many integer casts).

rdar://9437928 .



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132099 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-25 23:49:02 +00:00
Eli Friedman
482feb33b2 Make fast-isel work correctly s/uadd.with.overflow intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131420 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:06:17 +00:00
Eli Friedman
a4c920db7a Fix silly typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131419 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 20:34:53 +00:00
Eli Friedman
2586b8f936 Basic fast-isel of extractvalue. Not too helpful on its own, given the IR clang generates for cases like this, but it should become more useful soon. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131417 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 20:27:46 +00:00
Eli Friedman
d0118a2371 Fix a FIXME by moving the fast-isel implementation of the objectsize intrinsic from the x86 code to the generic code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131332 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-14 00:47:51 +00:00
Owen Anderson
d71867a8f4 Allow FastISel of three-register-operand instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130934 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-05 17:59:04 +00:00
Eli Friedman
b2b03fc2fa Make FastEmit_ri_ try a bit harder to succeed for supported operations; FastEmit_i can fail for non-Thumb2 ARM. Makes ARMSimplifyAddress work correctly, and reduces the number of fast-isel bailouts on non-Thumb ARM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130560 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 23:34:52 +00:00
Eli Friedman
bd1253809b Fix a silly mistake in r130338. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130360 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:42:03 +00:00
Eli Friedman
2790ba8e5a Make the fast-isel code for literal 0.0 a bit shorter/faster, since 0.0 is common. rdar://problem/9303592 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130338 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 22:41:55 +00:00
Eli Friedman
161b887506 Remove unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130337 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 22:21:02 +00:00
Dan Gohman
a61e73bda5 Fast-isel support for simple inline asms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130205 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 17:18:34 +00:00
Owen Anderson
d74ea775af Teach FastISel to deal with instructions that have two immediate operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130033 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-22 23:38:06 +00:00
Chris Lattner
832e494359 Implement support for x86 fastisel of small fixed-sized memcpys, which are generated 
en-mass for C++ PODs.  On my c++ test file, this cuts the fast isel rejects by 10x 
and shrinks the generated .s file by 5%


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129755 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-19 05:52:03 +00:00
Chris Lattner
f051c1a29d while we're at it, handle 'sdiv exact' of a power of 2 also, 
this fixes a few rejects on c++ iterator loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129694 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-18 07:00:40 +00:00
Chris Lattner
090ca9108b fix rdar://9297011 - udiv by power of two causing fast-isel rejects 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129693 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-18 06:55:51 +00:00
Chris Lattner
602fc06817 1. merge fast-isel-shift-imm.ll into fast-isel-x86-64.ll 
2. implement rdar://9289501 - fast isel should fold trivial multiplies to shifts
3. teach tblgen to handle shift immediates that are different sizes than the 
   shifted operands, eliminating some code from the X86 fast isel backend.
4. Have FastISel::SelectBinaryOp use (the poorly named) FastEmit_ri_ function
   instead of FastEmit_ri to simplify code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129666 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-17 20:23:29 +00:00
Chris Lattner
fff65b354f fix rdar://9289583 - fast isel should handle non-canonical commutative binops 
allowing us to fold the immediate into the 'and' in this case:

int test1(int i) {
  return 8&i;
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129653 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-17 01:16:47 +00:00
Chris Lattner
7a2bdde0a0 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 05:18:47 +00:00
Jay Foad
562b84b3ae Don't include Operator.h from InstrTypes.h. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129271 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-11 09:35:34 +00:00
Owen Anderson
2ce5bf188d Teach FastISel to support register-immediate-immediate instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127496 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 21:33:55 +00:00
Devang Patel
afeaae7a94 If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121059 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-06 22:39:26 +00:00
Wesley Peck
bf17cfa3f9 Renaming ISD::BIT_CONVERT to ISD::BITCAST to better reflect the LLVM IR concept. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119990 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-23 03:31:01 +00:00
Devang Patel
6fe75aaaeb Use frame index, if available for byval argument while lowering dbg_declare. Otherwise let getRegForValue() find register for this argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113843 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-14 20:29:31 +00:00
Devang Patel
4bafda9618 Add DEBUG message. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113614 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-10 20:32:09 +00:00
Eric Christopher
44a2c3476b Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111223 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 01:30:33 +00:00
Gabor Greif
96f1d8ebdd mass elimination of reliance on automatic iterator dereferencing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109103 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 13:36:47 +00:00
Dan Gohman
c6e59b71f5 After a custom inserter, in a block which has constant instructions, 
update the current basic block in addition to the current insert
position, so that they remain consistent. This fixes rdar://8204072.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108765 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-19 22:48:56 +00:00
Dan Gohman
9c3d5e41b9 Revert r108369, sorting llvm.dbg.declare information by source position, 
since it doesn't work for front-ends which don't emit column information
(which includes llvm-gcc in its present configuration), and doesn't
work for clang for K&R style variables where the variables are declared
in a different order from the parameter list.

Instead, make a separate pass through the instructions to collect the
llvm.dbg.declare instructions in order. This ensures that the debug
information for variables is emitted in this order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108538 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 17:54:27 +00:00
Dan Gohman
163f78ea40 Properly restore DebugLoc after leaving the local constant area. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108364 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 22:01:31 +00:00
Dan Gohman
2dd50e656f Delete fast-isel's trivial load optimization; it breaks debugging because 
it can look past points where a debugger might modify user variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108336 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 17:25:37 +00:00
Dan Gohman
a10b8494a5 Don't propagate debug locations to instructions for materializing 
constants, since they may not be emited near the other instructions
which get the same line, and this confuses debug info.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108302 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 01:07:44 +00:00
Jakob Stoklund Olesen
e7917bb207 Use COPY for fast-isel bitconvert, but don't create cross-class copies. 
This doesn't change the behavior of SelectBitcast for X86.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108073 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-11 05:16:54 +00:00
Jakob Stoklund Olesen
e797e0c864 Use COPY for extracting ImplicitDef'ed values from fast-isel instructions. 
This assumes that the registers can be copied which is probably a safe
assumption.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108070 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-11 03:31:05 +00:00
Jakob Stoklund Olesen
5127f79913 Use COPY in FastISel everywhere it is safe and trivial. 
The remaining copyRegToReg calls actually check the return value (shock!), so we
cannot trivially replace them with COPY instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108069 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-11 03:31:00 +00:00
Dan Gohman
84023e0fbe Reapply bottom-up fast-isel, with several fixes for x86-32: 
- Check getBytesToPopOnReturn().
 - Eschew ST0 and ST1 for return values.
 - Fix the PIC base register initialization so that it doesn't ever
   fail to end up the top of the entry block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108039 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-10 09:00:22 +00:00