llvm-svn: 37577

implementation for x86.

llvm-svn: 37576

llvm-svn: 37575

llvm-svn: 37574

llvm-svn: 37573

llvm-svn: 37572

llvm-svn: 37571

turned on.  Likewise for scanning of invokes to mark landing pads.

llvm-svn: 37570

VCONCAT_VECTORS. Use these for CopyToReg and CopyFromReg legalizing in
the case that the full register is to be split into subvectors instead
of scalars. This replaces uses of VBIT_CONVERT to present values as
vector-of-vector types in order to make whole subvectors accessible via
BUILD_VECTOR and EXTRACT_VECTOR_ELT.

This is in preparation for adding extended ValueType values, where
having vector-of-vector types is undesirable.

llvm-svn: 37569

correct types for the result vector, even though it is currently bitcasted
to a different type immediately.

llvm-svn: 37568

crashing but breaks exception handling.  The problem
described in PR1224 is that invoke is a terminator that
can produce a value.  The value may be needed in other
blocks.  The code that writes to registers values needed
in other blocks runs before terminators are lowered (in
this case invoke) so asserted because the value was not
yet available.  The fix that was applied was to do invoke
lowering earlier, before writing values to registers.

The problem this causes is that the code to copy values
to registers can be output after the invoke call.  If
an exception is raised and control is passed to the
landing pad then this copy-code will never execute.  If
the value is needed in some code path reached via the
landing pad then that code will get something bogus.

So revert the original fix and simply skip invoke values
in the general copying to registers code.  Instead copy
the invoke value to a register in the invoke lowering code.

llvm-svn: 37567

llvm-svn: 37566

llvm-svn: 37565

llvm-svn: 37564

llvm-svn: 37563

llvm-svn: 37562

llvm-svn: 37561

llvm-svn: 37560

common dominator.

llvm-svn: 37559

llvm-svn: 37558

llvm-svn: 37557

Refactor some code, and fix test/Transforms/GVNPRE/2007-06-12-NoExit.ll by being more careful when using
post-dominator information.

llvm-svn: 37556

llvm-svn: 37555

llvm-svn: 37554

llvm-svn: 37553

llvm-svn: 37552

Remove unused PostETForest.

llvm-svn: 37551

Fix a few more bugs, including an instance of walking in reverse topological rather than topological order.  This
fixes a testcase extracted from llvm-test.

llvm-svn: 37550

llvm-svn: 37549

llvm-svn: 37548

Fix 80 col violations.

llvm-svn: 37547

This means now ETNodes are not useful anymore.

llvm-svn: 37546

llvm-svn: 37545

llvm-svn: 37544

llvm-svn: 37543

llvm-svn: 37542

llvm-svn: 37541

llvm-svn: 37540

llvm-svn: 37539

llvm-svn: 37538