This improves the performance of the power benchmark by a few percent.
This will be neccesary for SSE code, which requires 16 byte alignment of
the stack.

llvm-svn: 5320

llvm-svn: 5272

* Support arbitrary FP constants
* Fix bugs in frame layout for function calls and incoming arguments
* Insert copies for constant arguments to PHI nodes into the BOTTOM of
  predecessor blocks, not the top.
* Implement _floating point_ support: setcc, return, load, store, cast
* Fix several bugs in the cast instruction
* Abstract out call emission and load/store for FP
* Implement malloc/free without previous lowering pass.
* Make use of new forms of MachineOperand
* Implement _long_ support!
* Fix many bugs in FP support
* Change branch from je/jne to je/jmp
* Simplify code generated for GEP instructions

llvm-svn: 5223

llvm-svn: 5201

  fixed size allocas
* Revamp call emission to work with new frame manager

llvm-svn: 5178

* Add initial support for FP constants
* Add initial FP support for several instructions

llvm-svn: 5154

Changes to support configurable pointer size and endianness

llvm-svn: 5130

llvm-svn: 5104

llvm-svn: 5090

  * Only load incoming arguments into virtual registers once at the
    beginning of the function
  * Assign different virtual registers to each reference to constants/globals

llvm-svn: 5088

llvm-svn: 5086

llvm-svn: 5084

Fix some bugs in use of MBB vs. BB and iterators that are invalidated before
we use them.

Reference targetClass by enum name, not by number.

llvm-svn: 5069

llvm-svn: 5059

Add support for boolean constants
add getClassB method

llvm-svn: 5034

llvm-svn: 5024

llvm-svn: 5021

llvm-svn: 5020

llvm-svn: 5015

lib/Target/X86/InstSelectSimple.cpp:

The MachineBasicBlock variable name patrol hereby fines Chris Lattner
one bag of nachos, for shadowing global names while his license to do so
was under suspension.

llvm-svn: 5014

llvm-svn: 5012

Rename all BMI MachineBasicBlock operands to MBB.

Try to mess around with emitGEPOperation's elementSizeReg to make it work,
again.

llvm-svn: 5011

llvm-svn: 5009

llvm-svn: 5004

lib/Target/X86/InstSelectSimple.cpp: Start counting arguments with 2,
 because arguments start two stack slots off of EBP. Break out of the
 for loop once the argument is found. Increment the counter at the end
 of the loop instead of the beginning. Use addRegOffset and compute
 the scale * index part at compile time instead of using the fancy
 load instruction. Just because an instruction set has wacky addressing
 modes doesn't mean we ought to use them (at least, if you believe Dave
 Patterson).

lib/Target/X86/X86InstrBuilder.h: Add some comments.

test/Regression/Jello/test-loadstore.ll:  Let main return int 0.

llvm-svn: 4999

InstSelectSimple.cpp:  Give promote32 a comment.  Add initial
 implementation of getReg() for arguments.

MachineCodeEmitter.cpp: Fix using EBP with index, scale and no
 displacement (whew!) due to Chris.

Printer.cpp: Fix printing out index and scale in memory references.

llvm-svn: 4998

Implement ConstantPointerRefs
Treat long/ulongs as if they were integers.  A hack, but an effective one

llvm-svn: 4995

brg

InstSelectSimple.cpp: Add stub implementation of visitFreeInst.
 Add comments that mention how we are failing to implement malloc/free.
 Add initial implementation of visitAllocaInst.

X86TargetMachine.cpp: Include llvm/Transforms/Scalar.h.
 Add LowerAllocations pass before instruction selection.

jello/Makefile: Add scalaropts.a.

llvm-svn: 4994

llvm-svn: 4980

This checkin is brought to you by the brian gaeke allnighter fund.


(lib/Target/X86) InstSelectSimple.cpp:
 Include llvm/DerivedTypes.h and iostream.
 Refactor visitMul out into a wrapper around doMultiply(), so that we
  can do multiplications on temporary values when we are doing
  getelementptrs.
 Refactor part of getReg out into makeAnotherReg, so that we can create
  registers willy-nilly to hold temporary values, when we are doing
  getelementptrs.
 Add stub implementations of visitMallocInst and visitAllocaInst.
 Add initial implementation of visitGetElementPtrInst.
 In copyConstantToRegister:
  We throw a *lot* of our asserts here. So, when we want to throw an
   assert, print out to stderr whatever expr or whatever constant made
   us barf.
  Support copying ConstantPointerNull to register, using a move immediate
   of zero.
 Rename FLDr4 and FLDr8 to FLDr32 and FLDr64, so that they match the meanings
  of the numbers in the other instruction names. All uses modified.
 Teach visitCallInst to extract byte- and short-class return values
  from subregs of EAX.  Add a FIXME note about how we would do it for
  float-class return values.
 Add a FIXME note about how we would cast float to int and back.

X86InstrInfo.def:
 Rename FLDr4 and FLDr8 to FLDr32 and FLDr64, so that they match the meanings
  of the numbers in the other instruction names. All uses modified.

(tools/jello) GlobalVars.cpp:
 Include iostream.
 If we have to emit a floating-point constant to memory, gamble and use
  the same method as for ints.
 If we have to emit a ConstantPointerNull to memory, try using a "void *"
  and "NULL".
 Otherwise, if we are going to throw an assert, print out whatever constant
  made us barf, first.

llvm-svn: 4973

llvm-svn: 4944

llvm-svn: 4925

llvm-svn: 4924

arguments pushed onto the stack.

llvm-svn: 4922

llvm-svn: 4917

llvm-svn: 4916

llvm-svn: 4909

llvm-svn: 4907

llvm-svn: 4891

llvm-svn: 4884