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20 Commits

Author SHA1 Message Date
Owen Anderson
f2fea95f2f Reapply r110396, with fixes to appease the Linux buildbot gods. 
llvm-svn: 110460
 2010-08-06 18:33:48 +00:00
Owen Anderson
aadd8a89ca Revert r110396 to fix buildbots. 
llvm-svn: 110410
 2010-08-06 00:23:35 +00:00
Owen Anderson
b9762c07cb Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static 
ID member as the sole unique type identifier.  Clean up APIs related to this change.

llvm-svn: 110396
 2010-08-05 23:42:04 +00:00
Jakob Stoklund Olesen
1c0aa5f14a Add StringRef::compare_numeric and use it to sort TableGen register records. 
This means that our Registers are now ordered R7, R8, R9, R10, R12, ...
Not R1, R10, R11, R12, R2, R3, ...

llvm-svn: 104745
 2010-05-26 21:47:28 +00:00
Dan Gohman
2bca857d78 Eliminate MachineBasicBlock::const_livein_iterator and make 
MachineBasicBlock::livein_iterator a const_iterator, because
clients shouldn't ever be using the iterator interface to
mutate the livein set.

llvm-svn: 101147
 2010-04-13 16:57:55 +00:00
John McCall
e20cc3b28c Fix a number of clang -Wsign-compare warnings that didn't have an obvious 
solution.  The only reason these don't fire with gcc-4.2 is that gcc turns off
part of -Wsign-compare in C++ on accident.

llvm-svn: 100581
 2010-04-06 23:35:53 +00:00
Jakob Stoklund Olesen
370a3e553f Don't try to collapse DomainValues onto an incompatible SSE domain. 
This fixes the Bullet regression on i386/nocona.

llvm-svn: 100553
 2010-04-06 19:48:56 +00:00
Jakob Stoklund Olesen
0f67b96b8d Clean up SSEDomainFix pass. 
Restrict bit mask operations to the DomainValue class. Rename methods for
clarity.

llvm-svn: 100353
 2010-04-04 21:27:26 +00:00
Jakob Stoklund Olesen
70757478a1 Switch SSEDomainFix to SpecificBumpPtrAllocator. 
llvm-svn: 100332
 2010-04-04 18:00:21 +00:00
Chris Lattner
9b4a8c9ba4 reduce indentation, minor cleanups. 
llvm-svn: 100042
 2010-03-31 20:32:51 +00:00
Jakob Stoklund Olesen
0d11c5907d Use spaces, not tabs 
llvm-svn: 100037
 2010-03-31 20:05:12 +00:00
Jakob Stoklund Olesen
a0f664e9ed Fix PR6750. Don't try to merge a DomainValue with itself. 
llvm-svn: 100016
 2010-03-31 17:13:16 +00:00
Jakob Stoklund Olesen
13a7a0adff Fix typo. Thank you, valgrind. 
llvm-svn: 99974
 2010-03-31 00:40:08 +00:00
Jakob Stoklund Olesen
8b8a7b3b02 Add cross-block inference to SSEDomainFix. 
llvm-svn: 99916
 2010-03-30 20:04:01 +00:00
Jakob Stoklund Olesen
faf5a4ff26 Be gentle to MSVC. C++ is hard, after all. 
llvm-svn: 99855
 2010-03-30 00:09:32 +00:00
Jakob Stoklund Olesen
d0d432022a Basic implementation of SSEDomainFix pass. 
Cross-block inference is primitive and wrong, but the pass is working otherwise.

llvm-svn: 99848
 2010-03-29 23:24:21 +00:00
Daniel Dunbar
aeb4d40a70 Fix -Asserts warning, again. 
llvm-svn: 99542
 2010-03-25 19:35:53 +00:00
Jakob Stoklund Olesen
5ca19faccc Add a late SSEDomainFix pass that twiddles SSE instructions to avoid domain crossings. 
On Nehalem and newer CPUs there is a 2 cycle latency penalty on using a register
in a different domain than where it was defined. Some instructions have
equvivalents for different domains, like por/orps/orpd.

The SSEDomainFix pass tries to minimize the number of domain crossings by
changing between equvivalent opcodes where possible.

This is a work in progress, in particular the pass doesn't do anything yet. SSE
instructions are tagged with their execution domain in TableGen using the last
two bits of TSFlags. Note that not all instructions are tagged correctly. Life
just isn't that simple.

The SSE execution domain issue is very similar to the ARM NEON/VFP pipeline
issue handled by NEONMoveFixPass. This pass may become target independent to
handle both.

llvm-svn: 99524
 2010-03-25 17:25:00 +00:00
Jakob Stoklund Olesen
1dba4a4389 Revert "Add a late SSEDomainFix pass that twiddles SSE instructions to avoid domain crossings." 
This reverts commit 99345. It was breaking buildbots.

llvm-svn: 99352
 2010-03-23 23:48:51 +00:00
Jakob Stoklund Olesen
9df76f18b4 Add a late SSEDomainFix pass that twiddles SSE instructions to avoid domain crossings. 
This is work in progress. So far, SSE execution domain tables are added to
X86InstrInfo, and a skeleton pass is enabled with -sse-domain-fix.

llvm-svn: 99345
 2010-03-23 23:14:44 +00:00