Bill Wendling
b3833d1eb9
Implement ((A|B)&1)|(B&-2) -> (A&1) | B transformation. This also takes care of
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permutations of this pattern.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60312 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-01 01:07:11 +00:00
Bill Wendling
b01865c210
Add instruction combining for ((A&~B)|(~A&B)) -> A^B and all permutations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60291 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30 13:52:49 +00:00
Bill Wendling
7f0ef6b325
Implement (A&((~A)|B)) -> A&B transformation in the instruction combiner. This
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takes care of all permutations of this pattern.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60290 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30 13:08:13 +00:00
Eli Friedman
91db5271d2
A couple small cleanups, plus a new potential optimization.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60286 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30 07:52:27 +00:00
Eli Friedman
4e16b29a6b
Moving potential optimizations out of PR2330 into lib/Target/README.txt.
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Hopefully this isn't too much stuff to dump into this file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60285 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30 07:36:04 +00:00
Duncan Sands
c6dbe7fbad
Add include files needed when building with
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gcc 4.4 (due to use of sprintf).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60209 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-28 10:20:03 +00:00
Duncan Sands
f9a67a8943
Fix build with gcc-4.4: it doesn't like PICStyle
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being both a namespace and a variable name.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60208 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-28 09:29:37 +00:00
Nick Lewycky
d2f0db1b19
Also update the README.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60188 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27 22:41:45 +00:00
Nick Lewycky
df563ca1f3
Add a synthetic missed optimization.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60186 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27 22:12:22 +00:00
Bill Wendling
109872e360
Comment out code that isn't entirely correct.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60156 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27 07:18:35 +00:00
Evan Cheng
dc52cf48dc
Eliminate a compile time warning.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60145 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27 02:29:25 +00:00
Evan Cheng
884c70c912
On x86 favors folding short immediate into some arithmetic operations (e.g. add, and, xor, etc.) because materializing an immediate in a register is expensive in turns of code size.
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e.g.
movl 4(%esp), %eax
addl $4, %eax
is 2 bytes shorter than
movl $4, %eax
addl 4(%esp), %eax
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60139 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27 00:49:46 +00:00
Bill Wendling
3fafd93560
Generate something sensible for an [SU]ADDO op when the overflow/carry flag is
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the conditional for the BRCOND statement. For instance, it will generate:
addl %eax, %ecx
jo LOF
instead of
addl %eax, %ecx
; About 10 instructions to compare the signs of LHS, RHS, and sum.
jl LOF
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60123 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26 22:37:40 +00:00
Evan Cheng
07213cb4b7
Cosmetic.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60110 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26 18:00:00 +00:00
Sanjiv Gupta
8f78fa827e
Emit declaration for globals and externs.
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Custom lower AND, OR, XOR bitwise operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60098 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26 10:53:50 +00:00
Dan Gohman
25a1b47cc3
Fish kill flag annotations in PUSH instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60095 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26 06:39:12 +00:00
Nick Lewycky
f9ef5b3ff5
__fastcall and __stdcall are mingw extensions to gcc for windows. Use the
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__attribute__ notation which is supported on more platforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60083 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26 03:17:27 +00:00
Scott Michel
18fae69723
CellSPU:
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(a) Remove conditionally removed code in SelectXAddr. Basically, hope for the
best that the A-form and D-form address predicates catch everything before
the code decides to emit a X-form address.
(b) Expand vector store test cases to include the usual suspects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60034 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25 17:29:43 +00:00
Scott Michel
50843c0741
CellSPU: Relax constraints on when to generate a X-form address, evidently
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they were too tight according to bug 3126.
Fix bug 3126.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60006 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25 04:03:47 +00:00
Scott Michel
662165d224
CellSPU: Fix mnemonic typo in pattern; "shlqbyi" -> "shlqby".
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59998 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25 00:23:16 +00:00
Bill Wendling
41ea7e7eb3
- Make lowering of "add with overflow" customizable by back-ends.
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- Mark "add with overflow" as having a custom lowering for X86. Give it a null
lowering representation for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59971 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 19:21:46 +00:00
Scott Michel
045a14503f
CellSPU:
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(a) Slight rethink on i64 zero/sign/any extend code - use a shuffle to
directly zero-extend i32 to i64, but use rotates and shifts for
sign extension. Also ensure unified register consistency.
(b) Add new test harness for i64 operations: i64ops.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59970 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 18:20:46 +00:00
Scott Michel
104de4390b
CellSPU:
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(a) Improve the extract element code: there's no need to do gymnastics with
rotates into the preferred slot if a shuffle will do the same thing.
(b) Rename a couple of SPUISD pseudo-instructions for readability and better
semantic correspondence.
(c) Fix i64 sign/any/zero extension lowering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59965 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 17:11:17 +00:00
Duncan Sands
25cf2275ff
If the type legalizer actually legalized anything
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(this doesn't happen that often, since most code
does not use illegal types) then follow it by a
DAG combiner run that is allowed to generate
illegal operations but not illegal types. I didn't
modify the target combiner code to distinguish like
this between illegal operations and illegal types,
so it will not produce illegal operations as well
as not producing illegal types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59960 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 14:53:14 +00:00
Matthijs Kooijman
19ea77f09d
Fix comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59958 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 11:44:00 +00:00
Evan Cheng
027fdbe3ba
Move target independent td files from lib/Target/ to include/llvm/Target so they can be distributed along with the header files.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59953 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 07:34:46 +00:00
Mon P Wang
9f22a4aaaf
Added missing description for -disable-mmx option.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59929 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 02:10:43 +00:00
Duncan Sands
03228089d5
Rename SetCCResultContents to BooleanContents. In
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practice these booleans are mostly produced by SetCC,
however the concept is more general.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59911 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-23 15:47:28 +00:00
Mon P Wang
3c81d35e7d
Added -disable-mmx using a patch from Preston Gurd.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59901 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-23 04:37:22 +00:00
Scott Michel
7a1c9e9cb7
CellSPU: Fix bug 3056. Varadic extract_element was not implemented (nor was it
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ever conceived to occur).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59891 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22 23:50:42 +00:00
Anton Korobeynikov
7751ad92da
Make a convenient helper for printing offsets.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59872 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22 16:15:34 +00:00
Scott Michel
9c0c6b2e4a
CellSPU:
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(a) Fix bgs 3052, 3057
(b) Incorporate Duncan's suggestions re: i1 promotion
(c) Indentation updates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59790 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21 02:56:16 +00:00
Scott Michel
dc91bea479
CellSPU:
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(a) Remove moved file (SPUAsmPrinter.cpp) to make svn happy.
(b) Remove truncated stores that will never be used.
(c) Add initial support for __muldi3 as a libcall.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59734 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20 16:36:33 +00:00
Mon P Wang
07239f13cd
Allow XMM2 and XMM3 to be used for non ABI compliant code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59720 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20 07:48:19 +00:00
Scott Michel
4379efced7
CellSPU: Custom lower truncating stores of i8 to i1 (should not have been
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promote), fix signed conversion of indexed offsets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59707 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20 05:01:09 +00:00
Scott Michel
a0e5769166
CellSPU: Adjust spacing/tabulation
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59703 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20 04:26:21 +00:00
Evan Cheng
97c573d5de
Fix a thinko. MO is getOperand(i-1) so we don't have to adjust e.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59696 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20 02:25:51 +00:00
Evan Cheng
e3066abfcf
Eliminate a compile time warning.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59678 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 23:21:33 +00:00
Evan Cheng
eda60a8364
Eliminate a compile time warning.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59677 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 23:21:11 +00:00
Dan Gohman
343f0c0467
Experimental post-pass scheduling support. Post-pass scheduling
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is currently off by default, and can be enabled with
-disable-post-RA-scheduler=false.
This doesn't have a significant impact on most code yet because it doesn't
yet do anything to address anti-dependencies and it doesn't attempt to
disambiguate memory references. Also, several popular targets
don't have pipeline descriptions yet.
The majority of the changes here are splitting the SelectionDAG-specific
code out of ScheduleDAG, so that ScheduleDAG can be moved to
libLLVMCodeGen.a. The interface between ScheduleDAG-using code and
the rest of the scheduling code is somewhat rough and will evolve.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59676 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 23:18:57 +00:00
Oscar Fuentes
57cbd99d5d
CMake: Removed source file from lib/Target/PIC16/CMakeLists.txt.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59655 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 18:42:25 +00:00
Scott Michel
719b0e17ae
CellSPU: Do not custom lower i1 stores, rely on type legalization to do the
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right thing and promote the store to i8.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59648 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 17:45:08 +00:00
Stuart Hastings
be362abe9c
<rdar://problem/6351057>
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Discourage (allocate last) use of x86_64 R12 and R13 due to their
longer instruction encodings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59644 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 17:19:35 +00:00
Scott Michel
430a555cdd
Temporary check-in for Duncan to demonstrate CellSPU store problem.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59637 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 15:24:16 +00:00
Sanjiv Gupta
928df6ca4e
Forgot to add this in the previous commit.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59623 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 12:12:49 +00:00
Sanjiv Gupta
863d3e9328
Fixed build warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59621 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 11:27:59 +00:00
Sanjiv Gupta
b1b5ffd827
Added a more function PIC16 backend. However to get this working a patch in
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ExpandIntegerOperand (LegalizeIntegerTypes.cpp) is needed which is yet to be reworked and submitted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59617 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 11:00:54 +00:00
Dan Gohman
c99da1348d
Don't set neverHasSideEffects on x86's divide instructions, since
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they trap on divide-by-zero, and this side effect is otherwise
unmodeled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59551 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18 21:29:14 +00:00
Dan Gohman
cbad42cfd1
Add more const qualifiers. This fixes build breakage from r59540.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59542 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18 19:49:32 +00:00
Dale Johannesen
a7647e68a4
Move some former testcases (low-probability codegen
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optimizations) into this wishlist.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59455 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-17 18:56:34 +00:00