Store the predecessor MBB in the PHIUnion, rather than an index, since the indices will change after renumbering.

llvm-svn: 53985

Fix a catastrophic PPC64 ABI bug: i32 operands which are passed in memory (all of the parameter registers are used) are loaded from sp offsets that were off by 4.

llvm-svn: 53979

llvm-svn: 53973

Rename instance variables, parameter argument names to eliminate a bunch of compilation warnings with -Wshadow.

llvm-svn: 53970

llvm-svn: 53961

to multiply the instruction count by a constant factor in a few places, which
caused the register allocator to require many more iterations.

llvm-svn: 53959

This fixes several recent CBE regressions.

llvm-svn: 53958

Added ConstantPool support.

llvm-svn: 53951

case for this.

This allows instructions like loads from global variables declared to
be constant to be moved out of loops."

Patch by Stefanus Du Toit!

llvm-svn: 53945

llvm-svn: 53943

Remove the GetResultInst instruction. It is still accepted in LLVM assembly
and bitcode, where it is now auto-upgraded to ExtractValueInst. Also, remove
support for return instructions with multiple values. These are auto-upgraded
to use InsertValueInst instructions.

The IRBuilder still accepts multiple-value returns, and auto-upgrades them
to InsertValueInst instructions.

llvm-svn: 53941

Based on patch by Nicolas Capens.

llvm-svn: 53939

llvm-svn: 53938

live intervals itself to use an instruction count approximation that is 
not affected by inserting empty indices.

llvm-svn: 53937

llvm-svn: 53933

Fix pr2566: incorrect assumption about bit_convert. It doesn't not have to output a vector value. Patch by Nicolas Capens!

llvm-svn: 53932

While creating temp. file on disk, if the current filename points to a existing directory then create new temp. file inside the directory.

llvm-svn: 53929

llvm-svn: 53927

llvm-svn: 53924

and use the right result number, in the off chance that the graph root
has multiple result values.

llvm-svn: 53923

llvm-svn: 53920

llvm-svn: 53919

llvm-svn: 53912

llvm-svn: 53911

Fixed small bug.

llvm-svn: 53908

llvm-svn: 53907

llvm-svn: 53904

llvm-svn: 53903

llvm-svn: 53896

llvm-svn: 53894

correctly handle the case where multiple-return-value constructs
were used to return one or zero values.

llvm-svn: 53890

llvm-svn: 53889

folded. Remove code that handled the case where they aren't
folded, and remove bitcode reader/writer support for them.

llvm-svn: 53887

llvm-svn: 53884

leads into a cycle involving a different PHI, LSR got stuck running
around that cycle looking for the original PHI. To avoid this, keep
track of visited PHIs and stop searching if we see one more than once.
This fixes PR2570.

llvm-svn: 53879

SelectionDAG graph writer to make use of them. Now, nodes with multiple
values are displayed as such, with incoming edges pointing to the
specific value they use.

llvm-svn: 53875

llvm-svn: 53874

llvm-svn: 53873

that include useful information like the name of the
block being viewed and the current phase of compilation.

llvm-svn: 53872

llvm-svn: 53870