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Author SHA1 Message Date
Jakob Stoklund Olesen
d99d8cfdf0 Number SlotIndexes uniformly without looking at the number of defs on each instruction. 
You can't really predict how many indexes will be needed from the number of
defs, so let's keep it simple.

Also remove an extra empty index that was inserted after each basic block. It
was intended for live-out ranges, but it was never used that way.

llvm-svn: 127014
 2011-03-04 18:51:09 +00:00
Jakob Stoklund Olesen
61af2752b1 Symbolize the default instruction distance. 
llvm-svn: 127013
 2011-03-04 18:36:51 +00:00
Benjamin Kramer
0376064f8f raw_ostream: If writing a string that is larger than the buffer, write it directly instead of doing many buffer-sized writes. 
This caps the number of write(2) calls per string to a maximum of 2.

llvm-svn: 127010
 2011-03-04 18:18:16 +00:00
Jakob Stoklund Olesen
728fffc159 Deferred SlotIndex renumbering was a good idea but never used. 
llvm-svn: 127008
 2011-03-04 18:08:32 +00:00
Jakob Stoklund Olesen
dfc9b0b15f Add SlotIndex statistics. 
llvm-svn: 127007
 2011-03-04 18:08:29 +00:00
Jakob Stoklund Olesen
c3193f4aa8 Tweak debug output. No functional changes. 
llvm-svn: 127006
 2011-03-04 18:08:26 +00:00
Bruno Cardoso Lopes
a49a596acf Fixes addc pattern when immediate cannot be represented with 16-bit. Patch by Akira Hatanaka 
llvm-svn: 127005
 2011-03-04 17:59:18 +00:00
Bruno Cardoso Lopes
5400401372 Remove (hopefully) all trailing whitespaces from the mips backend. Patch by Hatanaka, Akira 
llvm-svn: 127003
 2011-03-04 17:51:39 +00:00
Duncan Sands
f6c9de94f8 Revert commit 126684 "Use the correct shift amount type". It is only the correct 
type after type legalization has completed.  Before then it may simply not be big
enough to hold the shift amount, particularly on x86 which uses a very small type
for shifts (this issue broke stuff in the past which is why LegalizeTypes carefully
uses a large type for shift amounts).

llvm-svn: 127000
 2011-03-04 14:28:59 +00:00
Kalle Raiskila
6e33c92ffb Allow vector shifts (shl,lshr,ashr) on SPU. 
There was a previous implementation with patterns that would 
have matched e.g. 
	shl <v4i32> <i32>,
but this is not valid LLVM IR so they never were selected.

llvm-svn: 126998
 2011-03-04 13:19:18 +00:00
Kalle Raiskila
72cfda1a29 Allow load from constant on SPU. 
A 'load <4 x i32>* null' crashes llc before this fix.

llvm-svn: 126995
 2011-03-04 12:00:11 +00:00
Nick Lewycky
3bc3a84ba8 Fold "icmp pred (srem X, Y), Y" like we do for urem. Handle signed comparisons 
in the urem case, though not the other way around. This is enough to get #3 from
PR9343!

llvm-svn: 126991
 2011-03-04 10:06:52 +00:00
Nick Lewycky
a5f309e983 Teach instruction simplify to use constant ranges to solve problems of the form 
"icmp pred %X, CI" and a number of examples where "%X = binop %Y, CI2".

Some of these cases (div and rem) used to make it through opt -O2, but the
others are probably now making code elsewhere redundant (probably instcombine).

llvm-svn: 126988
 2011-03-04 07:00:57 +00:00
Eli Friedman
7243ca7572 Followup to r126970: add 64-bit encoding tests for str with reg operand. 
llvm-svn: 126987
 2011-03-04 04:06:47 +00:00
Jakob Stoklund Olesen
c7bf5eaafb DenseMap<uintptr_t,...> doesn't allow all values as keys. 
Avoid colliding with the sentinels, hopefully unbreaking
llvm-gcc-x86_64-linux-selfhost.

llvm-svn: 126982
 2011-03-04 02:48:56 +00:00
Andrew Trick
1478921dc0 Minor pre-RA-sched fixes and cleanup. 
Fix the PendingQueue, then disable it because it's not required for
the current schedulers' heuristics.
Fix the logic for the unused list-ilp scheduler.

llvm-svn: 126981
 2011-03-04 02:03:45 +00:00
Devang Patel
9dbcb14cd8 Add ArrayRef variant. 
llvm-svn: 126978
 2011-03-04 01:20:33 +00:00
Jakob Stoklund Olesen
3c64ea5ad2 Precompute block frequencies, pow() isn't free. 
llvm-svn: 126975
 2011-03-04 00:58:40 +00:00
Jakob Stoklund Olesen
5bc7a96cca Use an IndexedMap instead of a DenseMap for the live-out cache. 
This speeds up updateSSA() so it only accounts for 5% of the live range
splitting time.

llvm-svn: 126972
 2011-03-04 00:15:36 +00:00
Eli Friedman
be07c34368 PR9377: Handle x86 str with register operand in a way consistent with gas. 
llvm-svn: 126970
 2011-03-04 00:10:17 +00:00
Bill Wendling
6e6a0422eb There are times when the landing pad won't have a call to 'eh.selector' in 
it. It's been assumed up til now that it would be in its immediate
successor. However, this isn't necessarily the case. It could be in one of its
successor's successors.

Modify the code to more thoroughly check for an 'eh.selector' call in
successors. It only looks at a successor if we get there as a result of an
unconditional branch.

Testcase ObjC/exceptions-4.m in r126968.

llvm-svn: 126969
 2011-03-03 23:14:05 +00:00
Bob Wilson
c48ba54186 PR8053: Fix encoding of S bit in some ARM instructions. 
Patch by Zonr Chang!

llvm-svn: 126967
 2011-03-03 23:07:15 +00:00
Eli Friedman
26f5c96de3 Revert r123908; the code in question is completely untested and wrong. 
llvm-svn: 126964
 2011-03-03 22:33:23 +00:00
Joerg Sonnenberger
bb93506f95 Bug#9033: For the ELF assembler output, always quote the section name. 
llvm-svn: 126963
 2011-03-03 22:31:08 +00:00
Devang Patel
a7b5a00033 Fix typo. 
llvm-svn: 126962
 2011-03-03 21:49:41 +00:00
Devang Patel
3c2bd93f9e Fix thinko in previous check-in. 
Add comment.

llvm-svn: 126959
 2011-03-03 20:08:10 +00:00
Devang Patel
4adbb350be llvm::Function argument count is not a good indicator of how many arugments does the function have at source level. If we need more space, just resize vector conservatively. This vector is only used once per function. 
llvm-svn: 126957
 2011-03-03 20:02:02 +00:00
Jim Grosbach
e4ef37b298 Allow a target to choose whether to prefer the scavenger emergency spill slot 
be next to the frame pointer or the stack pointer.

llvm-svn: 126956
 2011-03-03 20:01:52 +00:00
Jan Sjödin
3c1fa9a68b Split MCEELFStreamer and ELFObjectWriter into .h and .cpp files, so that other components can use them. 
llvm-svn: 126942
 2011-03-03 14:52:12 +00:00
Richard Osborne
2186cd4e47 Fix typo in comment. 
llvm-svn: 126941
 2011-03-03 14:21:22 +00:00
Richard Osborne
88d0d840f2 Optimize fprintf -> iprintf if there are no floating point arguments 
and siprintf is available on the target.

llvm-svn: 126940
 2011-03-03 14:20:22 +00:00
Justin Holewinski
396fdaee6d PTX: Fix Emacs renaming a symbol 
llvm-svn: 126938
 2011-03-03 14:09:40 +00:00
Richard Osborne
021b589253 Optimize sprintf -> siprintf if there are no floating point arguments 
and siprintf is available on the target.

llvm-svn: 126937
 2011-03-03 14:09:28 +00:00
Justin Holewinski
86e749c620 PTX: Fix a couple of lint violations 
llvm-svn: 126936
 2011-03-03 13:34:29 +00:00
Richard Osborne
df829ddcb7 Optimize printf -> iprintf if there are no floating point arguments 
and iprintf is available on the target. Currently iprintf is only
marked as being available on the XCore.

llvm-svn: 126935
 2011-03-03 13:17:51 +00:00
Tilmann Scheller
ab6450ec63 Use X86_thiscall calling convention for Win64 as well. 
llvm-svn: 126934
 2011-03-03 07:49:07 +00:00
Eli Friedman
f7eb4cce13 PR9352: Always emit a relocation for weak symbols. Not emitting relocations 
for calls to weak symbols with a definition has the appearance of working
with LLVM-generated code because weak symbol definitions are put in their
own sections.

llvm-svn: 126933
 2011-03-03 07:24:36 +00:00
Bob Wilson
e24bee9ce8 TableGen should not ignore BX instructions for the ARM disassembler. pr9368. 
llvm-svn: 126931
 2011-03-03 07:19:52 +00:00
Bob Wilson
72ccdfe148 Add a readme entry for the redundant movw issue for pr9370. 
llvm-svn: 126930
 2011-03-03 06:39:09 +00:00
Jakob Stoklund Olesen
3511ad1023 Renumber slot indexes uniformly instead of spacing according to the number of defs. 
There are probably much larger speedups to be had by renumbering locally instead
of looping over the whole function. For now, the greedy register allocator is
25% faster.

llvm-svn: 126926
 2011-03-03 06:29:01 +00:00
Jakob Stoklund Olesen
d0930e03c1 Represent sentinel slot indexes with a null pointer. 
This is much faster than using a pointer to a ManagedStatic object accessed with
a function call. The greedy register allocator is 5% faster overall just from
the SlotIndex default constructor savings.

llvm-svn: 126925
 2011-03-03 05:40:04 +00:00
Jakob Stoklund Olesen
2e6407e9aa Avoid comparing invalid slot indexes, and assert that it doesn't happen. 
The SlotIndex created by the default construction does not represent a position
in the function, and it doesn't make sense to compare it to other indexes.

llvm-svn: 126924
 2011-03-03 05:18:19 +00:00
Jakob Stoklund Olesen
2a12e5adba Optimize SlotIndex equality tests. 
IndexListEntries have unique indexes, so it is not necessary to dereference
pointers to them.

llvm-svn: 126923
 2011-03-03 05:18:15 +00:00
Jakob Stoklund Olesen
92d724fb69 Avoid comparing invalid slot indexes. 
llvm-svn: 126922
 2011-03-03 04:23:52 +00:00
Jakob Stoklund Olesen
2759a169ea Cache basic block bounds instead of asking SlotIndexes::getMBBRange all the time. 
This speeds up the greedy register allocator by 15%.
DenseMap is not as fast as one might hope.

llvm-svn: 126921
 2011-03-03 03:41:29 +00:00
Bill Wendling
f13018b233 Check the ASM, not LLVM IR. 
llvm-svn: 126918
 2011-03-03 02:02:12 +00:00
Bob Wilson
42f80596ca pr9367: Add missing predicated BLX instructions. 
Patch by Jyun-Yan You, with some minor adjustments and a testcase from me.

llvm-svn: 126915
 2011-03-03 01:41:01 +00:00
Bill Wendling
ee60338654 Testcase for r126913. 
llvm-svn: 126914
 2011-03-03 01:32:56 +00:00
Jakob Stoklund Olesen
09a1939164 Change the SplitEditor interface to a single instance can be shared for multiple splits. 
llvm-svn: 126912
 2011-03-03 01:29:13 +00:00
Jakob Stoklund Olesen
df789f852e Only run the updateSSA loop when we have actually seen multiple values. 
When only a single value has been seen, new PHIDefs are never needed.

llvm-svn: 126911
 2011-03-03 01:29:10 +00:00