Commit Graph

13 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
c7908037d8 Reapply r161633-161634 "Partition use lists so defs always come before uses.""
No changes to these patches, MRI needed to be notified when changing
uses into defs and vice versa.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161644 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-10 00:21:30 +00:00
Jakob Stoklund Olesen
1134aae4e7 Revert r161633-161634 "Partition use lists so defs always come before uses."
These commits broke a number of buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161640 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-09 23:31:36 +00:00
Jakob Stoklund Olesen
81a6995243 Partition use lists so defs always come before uses.
This makes it possible to speed up def_iterator by stopping at the first
use. This makes def_empty() and getUniqueVRegDef() much faster when
there are many uses.

In a +Asserts build, LiveVariables is 100x faster in one case because
getVRegDef() has an assertion that would scan to the end of a
def_iterator chain.

Spill weight calculation is significantly faster (300x in one case)
because isTriviallyReMaterializable() calls MRI->isConstantPhysReg(%RIP)
which calls def_empty(%RIP).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161634 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-09 22:49:46 +00:00
Nadav Rotem
4dff258bfb The LIT tests below do not specify the exact cpu model and fail on AVX2 machines, because we select different instructions such as vbroadcast, new shuffles, etc.
Patch by Michael Liao.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160129 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-12 13:45:15 +00:00
Jakob Stoklund Olesen
3e5d5c53a0 Expand V_SET0 to xorps by default.
The xorps instruction is smaller than pxor, so prefer that encoding.

The ExecutionDepsFix pass will switch the encoding to pxor and xorpd
when appropriate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143996 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07 19:15:58 +00:00
Jakob Stoklund Olesen
20bc5acfb6 Don't depend on the physreg coalescing order.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130818 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 01:01:47 +00:00
NAKAMURA Takumi
0de102b9d8 Relax expressions and add explicit triplets -linux and -win32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126216 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-22 07:21:59 +00:00
Evan Cheng
2bce5f4b56 Enable i16 to i32 promotion by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 08:30:49 +00:00
Jakob Stoklund Olesen
d363b4ebc7 Replace V_SET0 with variants for each SSE execution domain.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99975 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31 00:40:13 +00:00
Evan Cheng
1ad0e8b576 Canonicalize -1 - x to ~x.
Instcombine does this but apparently there are situations where this pattern will escape the optimizer and / or created by isel. Here is a case that's seen in JavaScriptCore:
  %t1 = sub i32 0, %a
  %t2 = add i32 %t1, -1
The dag combiner pattern: ((c1-A)+c2) -> (c1+c2)-A
will fold it to -1 - %a.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93773 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-18 21:38:44 +00:00
Chris Lattner
eec96958cd implement and document support for filecheck variables. This
allows matching and remembering a string and then matching and
verifying that the string occurs later in the file.

Change X86/xor.ll to use this in some cases where the test was
checking for an arbitrary register allocation decision.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82891 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 07:56:52 +00:00
Chris Lattner
5d6a05f4d4 reimplement the regex matching strategy by building a single
regex and matching it instead of trying to match chunks at a time.
Matching chunks at a time broke with check lines like 
  CHECK: foo {{.*}}bar
because the .* would eat the entire rest of the line and bar would
never match.

Now we just escape the fixed strings for the user, so that something
like:
  CHECK: a() {{.*}}???
is matched as:
  CHECK: {{a\(\) .*\?\?\?}}
transparently "under the covers".



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82779 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25 17:23:43 +00:00
Chris Lattner
5d7c79d9c6 convert testcases to filecheck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82759 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25 06:49:41 +00:00