block (common in a switch), make sure to remove extra edges in successor
blocks.  This fixes CodeExtractor/2004-08-12-BlockExtractPHI.ll and should
be pulled into LLVM 1.3 (though the regression test need not be, as that
would require pulling in the LoopExtract.cpp changes).

llvm-svn: 15717

the extracted code was, instead of putting it at the end of the function

llvm-svn: 15716

Nate ran into when bugpointing siod.  This fix should go into LLVM 1.3

llvm-svn: 15712

run into.  This should go into 1.3

llvm-svn: 15679

llvm-svn: 15487

llvm-svn: 15369

llvm-svn: 15337

llvm-svn: 15334

llvm-svn: 15325

llvm-svn: 15089

return, clone the 'ret' BB code into the block AFTER the inlined call, not the
other way around.

llvm-svn: 15030

llvm-svn: 15022

llvm-svn: 14968

- Replace ConstantPointerRef usage with GlobalValue usage

llvm-svn: 14953

- Minimize redundant isa<GlobalValue> usage

llvm-svn: 14948

llvm-svn: 14840

llvm-svn: 14622

llvm-svn: 14348

llvm-svn: 14340

since May 1st.  In this code, the pred iterator was being invalidated sometimes
causing the wrong entries to be added to PHI nodes.

The fix for this is to defererence and safe the *PI value before we hack on
branch instructions, which changes use/def chains, which SOMETIMES invalidates
the iterator.

llvm-svn: 14278

breaking the build on sparc is not acceptable.

llvm-svn: 14277

Fix another non-deterministic behavior, this one should actually speed up the
code though as it was doing silly things.

llvm-svn: 14258

llvm-svn: 14247

non-deterministic things like the ordering of blocks in the dominance
frontier of a BB.  Unfortunately, I don't know of a better way to solve
this problem than to explicitly sort the BB's in function-order before
processing them.  This is guaranteed to slow the pass down a bit, but
is absolutely necessary to get usable diffs between two different tools
executing the mem2reg or scalarrepl pass.

Before this, bazillions of spurious diff failures occurred all over the
place due to the different order of processing PHIs:

-       %tmp.111 = getelementptr %struct.Connector_struct* %upcon.0.0, uint 0, uint 0
+       %tmp.111 = getelementptr %struct.Connector_struct* %upcon.0.1, uint 0, uint 0

Now, the diffs match.

llvm-svn: 14244

nondeterministic results that depend on where these objects land in memory.
Instead, sort by the value of the constant, which is stable.

Before this patch, the -simplifycfg pass run from two different compilers
could cause different code to be generated, though it was semantically the
same:

@@ -12258,8 +12258,8 @@
        %s_addr.1 = phi sbyte* [ %s, %entry ], [ %inc.0, %no_exit ]             ; <sbyte*> [#uses=5]
        %tmp.1 = load sbyte* %s_addr.1          ; <sbyte> [#uses=1]
        switch sbyte %tmp.1, label %no_exit [
-                sbyte 0, label %loopexit
                 sbyte 46, label %loopexit
+                sbyte 0, label %loopexit
        ]

We need to stomp all of this stuff out.

llvm-svn: 14243

llvm-svn: 14206

PR371

llvm-svn: 14203

llvm-svn: 14201

llvm-svn: 14192

llvm-svn: 14186

is write an autoconf macro that checks whether __isnan or isnan actually works
**using the C++ compiler after #include <cmath>**, instead of doing it the easy
way with AC_CHECK_FUNCS().

llvm-svn: 14171

llvm-svn: 14168

llvm-svn: 14150

llvm-svn: 13823

Add support for acos/asin/atan.  188.ammp contains three calls to acos with
constant arguments.  Constant folding it allows elimination of those 3 calls
and three FP divisions of the results.

llvm-svn: 13821

appended anywhere.

llvm-svn: 13798

llvm-svn: 13792

llvm-svn: 13754

llvm-svn: 13751

effects as) CloneFunctionInto().

llvm-svn: 13601