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177 Commits

Author SHA1 Message Date
Chris Lattner 29852a58b0 Fit into 80 cols 
llvm-svn: 25191
 2006-01-11 00:46:55 +00:00
Evan Cheng 73a1ad975e FP_TO_INT*_IN_MEM and x87 FP Select support. 
llvm-svn: 25188
 2006-01-10 20:26:56 +00:00
Evan Cheng 7c4486215f * Added undef patterns. 
* Some reorg.

llvm-svn: 25163
 2006-01-09 23:10:28 +00:00
Evan Cheng 92e2797ce2 * Added integer div / rem. 
* Fixed a load folding bug.

llvm-svn: 25136
 2006-01-06 23:19:29 +00:00
Evan Cheng 10d2790d50 ISEL code for MULHU, MULHS, and UNDEF. 
llvm-svn: 25132
 2006-01-06 20:36:21 +00:00
Evan Cheng b03f9b32d2 fold (shl x, 1) -> (add x, x) 
llvm-svn: 25120
 2006-01-06 01:06:31 +00:00
Evan Cheng a5ae6e8320 Added ConstantFP patterns. 
llvm-svn: 25108
 2006-01-05 02:08:37 +00:00
Evan Cheng 45e19098a6 DAG based isel call support. 
llvm-svn: 25103
 2006-01-05 00:27:02 +00:00
Evan Cheng 9cdc16c6d3 * Fix a GlobalAddress lowering bug. 
* Teach DAG combiner about X86ISD::SETCC by adding a TargetLowering hook.

llvm-svn: 24921
 2005-12-21 23:05:39 +00:00
Evan Cheng a2f308fc3e Remove ISD::RET select code. Now tblgen'd. 
llvm-svn: 24889
 2005-12-21 02:41:57 +00:00
Evan Cheng a74ce62746 * Added lowering hook for external weak global address. It inserts a load 
for Darwin.
* Added lowering hook for ISD::RET. It inserts CopyToRegs for the return
  value (or store / fld / copy to ST(0) for floating point value). This
  eliminate the need to write C++ code to handle RET with variable number
  of operands.

llvm-svn: 24888
 2005-12-21 02:39:21 +00:00
Evan Cheng 1d9b671de0 It's essential we clear CodeGenMap after isel every basic block! 
llvm-svn: 24867
 2005-12-19 22:36:02 +00:00
Evan Cheng 1d71248392 Darwin API issue: indirect load of external and weak symbols. 
llvm-svn: 24775
 2005-12-17 09:13:43 +00:00
Evan Cheng bc7708c0e8 Added truncate. 
llvm-svn: 24760
 2005-12-17 02:02:50 +00:00
Evan Cheng cb19390ead Added support for cmp, test, and conditional move instructions. 
llvm-svn: 24756
 2005-12-17 01:24:02 +00:00
Evan Cheng 74151ba279 * Promote all 1 bit entities to 8 bit. 
* Handling extload (1 bit -> 8 bit) and remove C++ code that handle 1 bit
zextload.

llvm-svn: 24726
 2005-12-15 19:49:23 +00:00
Evan Cheng 00fcb0017e Handling zero extension of 1 bit value. 
llvm-svn: 24722
 2005-12-15 01:02:48 +00:00
Evan Cheng 67ed58e22b When SelectLEAAddr() fails, it shouldn't cause the side effect of having the 
base or index operands being selected.

llvm-svn: 24674
 2005-12-12 21:49:40 +00:00
Evan Cheng bfd259a2b7 For ISD::RET, if # of operands >= 2, try selection the real data dep. operand 
first before the chain.
e.g.
int X;

int foo(int x)
{
  x += X + 37;
  return x;
}

If chain operand is selected first, we would generate:
	movl X, %eax
	movl 4(%esp), %ecx
	leal 37(%ecx,%eax), %eax

rather than
	movl $37, %eax
	addl 4(%esp), %eax
	addl X, %eax

which does not require %ecx. (Due to ADD32rm not matching.)

llvm-svn: 24673
 2005-12-12 20:32:18 +00:00
Evan Cheng 0d6cfee704 * Added X86 store patterns. 
* Added X86 dec patterns.

llvm-svn: 24654
 2005-12-10 00:48:20 +00:00
Evan Cheng c9fab31098 * Added intelligence to X86 LEA addressing mode matching routine so it returns 
false if the match is not profitable. e.g. leal 1(%eax), %eax.
* Added patterns for X86 integer loads and LEA32.

llvm-svn: 24635
 2005-12-08 02:01:35 +00:00
Evan Cheng 4b02426130 Proper support for shifts with register shift value. 
llvm-svn: 24559
 2005-12-01 00:43:55 +00:00
Chris Lattner af2e0373dd SelectNodeTo now returns its result, we must pay attention to it. 
llvm-svn: 24550
 2005-11-30 22:59:19 +00:00
Evan Cheng 4eb7af9bc9 Added support to STORE and shifts to DAG to DAG isel. 
llvm-svn: 24525
 2005-11-30 02:51:20 +00:00
Chris Lattner 3f0f71b92b Add load and other support to the dag-dag isel. Patch contributed by Evan 
Cheng!

llvm-svn: 24419
 2005-11-19 02:11:08 +00:00
Chris Lattner 5930d3df3d Add patterns for several simple instructions that take i32 immediates. 
Patch contributed by Evan Cheng!

llvm-svn: 24382
 2005-11-16 22:59:19 +00:00
Chris Lattner 655e7dfd0d initial step at adding a dag-to-dag isel for X86 backend. Patch contributed 
by Evan Cheng!

llvm-svn: 24371
 2005-11-16 01:54:32 +00:00