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Author SHA1 Message Date
Dan Gohman
572645cf84 Reapply the new LoopStrengthReduction code, with compile time and 
bug fixes, and with improved heuristics for analyzing foreign-loop
addrecs.

This change also flattens IVUsers, eliminating the stride-oriented
groupings, which makes it easier to work with.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95975 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 10:34:29 +00:00
Lang Hames
5cef638855 * Updated the cost matrix normalization proceedure to better handle infinite costs. 
* Enabled R1/R2 application for nodes with infinite spill costs in the Briggs heuristic (made
safe by the changes to the normalization proceedure).
* Removed a redundant header.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95973 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 09:43:37 +00:00
Evan Cheng
d19925f48f Update test to match 95961. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95971 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 07:48:46 +00:00
Evan Cheng
e89d578fda Test for 95961. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95962 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 02:35:03 +00:00
Chris Lattner
0d8db8e0a8 add a bunch of mod/rm encoding types for fixed mod/rm bytes. 
This will work better for the disassembler for modeling things
like lfence/monitor/vmcall etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95960 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 02:06:33 +00:00
Evan Cheng
e79562dce0 Test case for 95958. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95959 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 02:02:23 +00:00
Chris Lattner
c96f6d606f revert r95949, it turns out that adding new prefixes is not a 
great solution for the disassembler, we'll go with "plan b".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95957 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 01:55:31 +00:00
Daniel Dunbar
3b6910dcd4 MC: Fix bug where trailing tied operands were forgotten; the X86 assembler 
matcher is now free of implicit operands!
 - Still need to clean up the code now that we don't to worry about implicit
   operands, and to make it a hard error if an instruction fails to specify all
   of its operands for some reason.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95956 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 01:46:54 +00:00
Johnny Chen
906d57ffe8 Added coprocessor Instructions CDP, CDP2, MCR, MCR2, MRC, MRC2, MCRR, MCRR2, 
MRRC, MRRc2.  For disassembly only.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95955 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 01:44:23 +00:00
Bob Wilson
fe61fb1e10 Add a new pass on machine instructions to optimize away PHI cycles that 
reduce down to a single value.  InstCombine already does this transformation
but DAG legalization may introduce new opportunities.  This has turned out to
be important for ARM where 64-bit values are split up during type legalization:
InstCombine is not able to remove the PHI cycles on the 64-bit values but
the separate 32-bit values can be optimized.  I measured the compile time 
impact of this (running llc on 176.gcc) and it was not significant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95951 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 01:30:21 +00:00
Daniel Dunbar
ccfa1db538 X86: Fix definition for RCL/RCR.*m? operations -- they were getting represented 
with "tied memory operands", which is wrong.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95950 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 01:22:03 +00:00
Chris Lattner
239a1edbab add another bit of space for new kinds of instruction prefixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95949 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 01:15:16 +00:00
Nate Begeman
7cdba6d1f4 Add a missing pattern for movhps so that we get: 
movq	(%ecx,%edx,2), %xmm2
movhps	(%ecx,%eax,2), %xmm2

rather than:

movq     (%eax, %edx, 2), %xmm2		
movq     (%eax, %ebx, 2), %xmm3		
movlhps  %xmm3, %xmm2			

Testcase forthcoming.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95948 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 01:10:45 +00:00
Chris Lattner
c4d3f662fc fix the encodings of monitor and mwait, which were completely 
busted in both encoders.  I'm not bothering to fix it in the
old one at this point.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95947 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 01:06:22 +00:00
Chris Lattner
6ae7bbb5ea improve support for minix, PR6280, patch by 
Kees van Reeuwijk!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95946 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 00:37:46 +00:00
Charles Davis
1e063d14df Add a new function attribute, 'alignstack'. It will indicate (when the backends 
implement support for it) that the stack should be forcibly realigned in the
prologue (and the process reversed in the epilogue).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95945 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 00:31:15 +00:00
Jakob Stoklund Olesen
4a540f0593 Reapply coalescer fix for better cross-class coalescing. 
This time with fixed test cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95938 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 23:55:29 +00:00
Chris Lattner
0d7b0aa760 enhance llvm-mc -show-inst to print the enum of an instruction, like so: 
testb	%al, %al                ## <MCInst #2412 TEST8rr
                                        ##   <MCOperand Reg:2>
                                        ##   <MCOperand Reg:2>>
	jne	LBB1_7                  ## <MCInst #938 JNE_1
                                        ##   <MCOperand Expr:(LBB1_7)>>



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95935 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 22:57:32 +00:00
Chris Lattner
7e85180d15 add a new MCInstPrinter::getOpcodeName interface, when it is 
implemented, llvm-mc --show-inst now uses it to print the
instruction opcode as well as the number.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95929 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 22:39:10 +00:00
Anton Korobeynikov
780679baa7 Document binutils requirements for coff targets (cygwin / mingw32). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95928 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:51:51 +00:00
Chris Lattner
b8db331588 improve encoding information for branches. We now know they have 
8 or 32-bit immediates, which allows the new encoder to handle
them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95927 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:45:31 +00:00
Daniel Dunbar
cb7d743b42 MC: Move assembler-backend's fixup list into the fragment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95926 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:29:46 +00:00
Daniel Dunbar
27ade18431 MC: Move MCSectionData::Fixup out to MCAsmFixup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95925 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:29:29 +00:00
Chris Lattner
8d31de6268 make getFixupKindInfo return a const reference, allowing 
the tables to be const.  Teach MCCodeEmitter to handle
the target-indep kinds so that we don't crash on them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95924 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:27:18 +00:00
Jakob Stoklund Olesen
9637dd50f4 Revert functional change. This broke a bunch of tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95921 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:19:44 +00:00
Chris Lattner
11eafa8bed switch to target-indep fixups for 1/2/4/8 byte data. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95920 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:17:54 +00:00
Devang Patel
cb419d3c6f revert 95903. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95918 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 20:58:56 +00:00
Jakob Stoklund Olesen
a875fd0fdb It is always good to do a cross-class join when the large register has a tiny interval. 
Also avoid division by zero.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95917 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 20:58:45 +00:00
Johnny Chen
e4c7f0f6ec Added LDRT/LDRBT/STRT/STRBT for disassembly only. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95916 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 20:31:08 +00:00
Chris Lattner
8b442a814e unbreak the build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95915 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:52:11 +00:00
Dan Gohman
4bcf51be15 llvm-db was removed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95904 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:35:26 +00:00
Devang Patel
11dbf8ee69 Destroy MDNodes while destructing llvm context. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95903 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:35:10 +00:00
Chris Lattner
b917c47c98 refactor x86 conditional branches to use a multipattern 
that generates the 1-byte and 4-byte immediate versions
from one definition.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95902 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:31:22 +00:00
Chris Lattner
bd13fb6254 refactor the conditional jump instructions in the .td file to 
use a multipattern that generates both the 1-byte and 4-byte 
versions from the same defm


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95901 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:25:55 +00:00
Jeffrey Yasskin
42fc558624 Make Kaleidoscope not link against the interpreter, since that didn't 
work anyway (Interpreter::getPointerToFunction doesn't return a
callable pointer), and improve the error message when an
ExecutionEngine can't be created.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95896 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:15:20 +00:00
Dan Gohman
bbe99362e5 Add an svn:ignore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95895 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:07:04 +00:00
Johnny Chen
811663f799 Forgot to also check in this file for vcvt (floating-point <-> fixed-point, VFP). 
Sorry!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95892 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:47:03 +00:00
Dale Johannesen
39c7a198ea Allow for more than one DBG_VALUE targeting the 
same dead instruction.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95890 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:23:23 +00:00
Dale Johannesen
3bfef03eb6 Don't allow DBG_VALUE to affect codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95889 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:22:31 +00:00
Johnny Chen
27bb8d0a88 Added VCVT (between floating-point and fixed-point, VFP) for disassembly. 
A8.6.297


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95885 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:17:16 +00:00
Johnny Chen
c6f7b27fda Added BKPT/tBKPT (breakpoint) to the instruction table for disassembly purpose. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95884 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:12:29 +00:00
Jakob Stoklund Olesen
b5b90eddcd Use array_pod_sort instead of std::sort for improved code size. 
Use SmallVector instead of std::vector for better speed when indirectbr has
few successors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95879 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:06:56 +00:00
Eric Christopher
dfdddd8ed6 Make sure that ConstantExpr offsets also aren't off of extern 
symbols.

Thanks to Duncan Sands for the testcase!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95877 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 17:44:04 +00:00
Johnny Chen
ba6e033f4f Add pseudo instruction TRAP for disassembly, which is encoded according to A5-21 
as the "Permanently UNDEFINED" instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95873 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 17:14:31 +00:00
Bill Wendling
e9d10a6c39 Use .empty() instead of .size(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95871 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 10:37:57 +00:00
Chris Lattner
ecfb3c3d66 dont' call getX86RegNum on X86::RIP, it doesn't like that. This 
fixes the remaining x86-64 jit failures afaik.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95867 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 08:45:56 +00:00
Chris Lattner
5526b69901 fix a really nasty bug I introduced in r95693: r12 (and r12d, 
r12b, etc) also encodes to a R/M value of 4, which is just
as illegal as ESP/RSP for the non-sib version an address.

This fixes x86-64 jit miscompilations of a bunch of programs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95866 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 08:41:21 +00:00
Jeffrey Yasskin
d8735356a3 Fix (harmless) memory leak found by memcheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95862 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 07:16:13 +00:00
Chris Lattner
8b0f7a7d86 Add and commonize encoder support for all immediates. 
Stub out some dummy fixups to make things work.

We can now emit fixups like this:
	subl	$20, %esp               ## encoding: [0x83,0xec,A]
                                        ##   fixup A - offset: 2, value: 20, kind: fixup_1byte_imm

Emitting $20 as a single-byte fixup to be later resolved
by the assembler is ridiculous of course (vs just emitting
the byte) but this is a failure of the matcher, which 
should be producing an imm of 20, not an MCExpr of 20.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95860 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 07:06:31 +00:00
Chris Lattner
a38c707d82 generalize EmitDisplacementField to work with any size 
and rename it to EmitImmediate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95859 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 06:54:23 +00:00