llvm-svn: 146246

Patch by Brendon Cahoon!

This extends the existing LoopUnroll and LoopUnrollPass. Brendon
measured no regressions in the llvm test suite with -unroll-runtime
enabled. This implementation works by using the existing loop
unrolling code to unroll the loop by a power-of-two (default 8). It
generates an if-then-else sequence of code prior to the loop to
execute the extra iterations before entering the unrolled loop.

llvm-svn: 146245

llvm-svn: 146244

appropriate macro. Patch by Alexey Prokhin. Fixes PR11498.

llvm-svn: 146239

symbol difference. This matches gas behavior and fixes PR11513.

We still don't handle _GLOBAL_OFFSET_TABLE_ in data sections.

llvm-svn: 146238

llvm-svn: 146234

llvm-svn: 146232

specified.

llvm-svn: 146229

llvm-svn: 146226

llvm-svn: 146220

llvm-svn: 146219

dontlookhere check must be after it.

llvm-svn: 146217

I have run these tests under many configurations on the exact same OS as
the failures, and I can't reproduce them :(.

llvm-svn: 146214

llvm-svn: 146205

llvm-svn: 146201

directory_iterator preserve InputIterator semantics on copy.

llvm-svn: 146200

trivially infinite.

llvm-svn: 146197

llvm-svn: 146196

llvm-svn: 146195

llvm-svn: 146194

Enhance both TargetLibraryInfo and SelectionDAGBuilder so that the latter can use the former to prevent the formation of libm SDNode's when  -fno-builtin is passed.

llvm-svn: 146193

llvm-svn: 146192

code looks pretty bad compared to SSE.

rdar://10538793

llvm-svn: 146191

llvm-svn: 146190

llvm-svn: 146187

llvm-svn: 146186

For better 'gas' compatibility.

llvm-svn: 146185

Filter "sink to" candidate blocks sooner. This avoids unnecessary computation to determine whether the block dominates all uses or not.

llvm-svn: 146184

MipsTargetLowering::LowerGlobalTLSAddress. This is necessary to have
call16(__tls_get_addr) emitted instead of got_disp(__tls_get_addr) when the
target is Mips64.

llvm-svn: 146183

llvm-svn: 146182

llvm-svn: 146181

Don't explicitly marked libm rounding ops as legal on SSE4.1/AVX.  There don't seem to be patterns for these, so I don't know why they were marked legal in the first place.
Fixes failures caused by r146171.

llvm-svn: 146180

llvm-svn: 146179

llvm-svn: 146177

- Modify lowering of global TLS address nodes.
- Modify isel of ThreadPointer.
- Wrap target global TLS address nodes that are operands of loads with WrapperPIC. 
- Remove Mips-specific DAG nodes TlsGd, TprelHi and TprelLo, which can be
  substituted with other existing nodes.

llvm-svn: 146175

Teach SelectionDAG to match more calls to libm functions onto existing SDNodes.  Mark these nodes as illegal by default, unless the target declares otherwise.

llvm-svn: 146171

rdar://10550084

llvm-svn: 146170

clients to decide whether to look inside bundled instructions and whether
the query should return true if any / all bundled instructions have the
queried property.

llvm-svn: 146168

llvm-svn: 146167

Many of the SSE patterns should not be selected when AVX is available. This led to the following code in X86Subtarget.cpp

  if (HasAVX)
    X86SSELevel = NoMMXSSE;

This is so patterns that are predicated on hasSSE3, etc. would not be selected when avx is available. Instead, the AVX variant is selected.
However, this breaks instructions which do not have AVX variants.

The right way to fix this is for the SSE but not-AVX patterns to predicate on something like hasSSE3() && !hasAVX().
Then we can take out the hack in X86Subtarget.cpp. Patterns which do not have AVX variants do not need to change.

However, we need to audit all the patterns before we make the change. This patch is workaround that fixes one specific case,
the prefetch instructions. rdar://10538297

llvm-svn: 146163