CALLSEQ_BEGIN & CALLSEQ_END.

llvm-svn: 52225

For now, avoid generating FP select instructions in order to speculatively execute integer arithmetic instructions. FP selects are more likely to be expensive (even compared to branch on fcmp). This is not a wonderful solution but I rather err on the side of conservative.

This fixes the heapsort performance regressions.

llvm-svn: 52224

Avoid duplicating loop header which leads to unnatural loops (and just seem like general badness to me, likely to cause code explosion).
Patch by Florian Brandner.

llvm-svn: 52223

llvm-svn: 52218

useless insert-extract chains, similar to how it folds them for vectors.

Add a testcase for this.

llvm-svn: 52217

llvm-svn: 52216

llvm-svn: 52215

maps can be deleted.  This happens when RAUW
replaces a node N with another equivalent node
E, deleting the first node.  Solve this by
adding (N, E) to ReplacedNodes, which is already
used to remap nodes to replacements.  This means
that deleted nodes are being allowed in maps,
which can be delicate: the memory may be reused
for a new node which might get confused with the
old deleted node pointer hanging around in the
maps, so detect this and flush out maps if it
occurs (ExpungeNode).  The expunging operation
is expensive, however it never occurs during
a llvm-gcc bootstrap or anywhere in the nightly
testsuite.  It occurs three times in "make check":
Alpha/illegal-element-type.ll,
PowerPC/illegal-element-type.ll and
X86/mmx-shift.ll.  If expunging proves to be too
expensive then there are other more complicated
ways of solving the problem.
In the normal case this patch adds the overhead
of a few more map lookups, which is hopefully
negligable.

llvm-svn: 52214

If this doesn't work, I'll write a configure test.

llvm-svn: 52213

llvm-svn: 52212

llvm-svn: 52191

llvm-svn: 52190

The test still fails because an expected symbol is not
present, and I don't see why it should be.

llvm-svn: 52188

Warnings are legitimate.

llvm-svn: 52187

harness to fail the tests.  The warning all appear
legitimate.

llvm-svn: 52186

llvm-svn: 52185

This fixes 2 testcases.

llvm-svn: 52184

variable expansions involving the $ character.

This fixes 4 tests that were not running properly before.

llvm-svn: 52183

cases quoting of <{ didn't work out, so I changed the grep to check for }>
instead.

This fixes 7 testcases that were not properly running before.

llvm-svn: 52182

This fixes 5 testcases that were not being run properly before.

llvm-svn: 52180

This fixes two test cases that were not being run properly before.

llvm-svn: 52179

Also, use > %t instead of -o %t for output in one test since that also works
when %t already exists.

This fixes 6 testcases.

llvm-svn: 52178

llvm-svn: 52177

declarations. These are the fixes that I was pretty confident about, there are
still a lot of other llvm-gcc warnings of which I'm not sure if they can be
safely ignored or fixed, without breaking the test case.

This fixes 11 testcases.

llvm-svn: 52176

don't fail when (expected) error output is produced. This fixes 17 tests.

While I was there, I also made all RUN lines of the form "not llvm-as..." a bit
more consistent, they now all redirect stderr and stdout to /dev/null and use
input redirect to read their input.

llvm-svn: 52174

llvm-svn: 52173

tests. This breaks 80 tests in the tree.

The interesting part here is that this no longer ignores syntax errors
in RUN command lines. Some tests have not been working all the time because of
this.

The tricky part is that it now also views any stderr output as an error. This
can be suppressed in tcl 8.5, but let's not add this dependency. Instead, all
testcases should be changed to redirect stderr if they expect stderr output.
This holds in particular for lines like:
  ; RUN: not llvm-as < %s
where an error is expected (but I think I can solve this by modifying the not
script). Also, compilations resulting in warnings will now also fail (so
the warnings should be fixed, disabled or redirected...).

I'll continue with fixing the testcases that are broken now.

llvm-svn: 52172

llvm-svn: 52165

executing the test commands.

llvm-svn: 52163

llvm-svn: 52159

value, which is something that apparently isn't used much.

llvm-svn: 52158

types on functions, with adjustments so that it accepts both
new-style aggregate returns and old-style MRV returns, including those
with only a single member.

llvm-svn: 52157

llvm-svn: 52156

llvm-svn: 52153

change for non-funky-sized integers.

llvm-svn: 52151

llvm-svn: 52150

llvm-svn: 52149

llvm-svn: 52147

llvm-svn: 52146

llvm-svn: 52144