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Author SHA1 Message Date
Chris Lattner 5c4637816e Use MachineOperand::getImm instead of MachineOperand::getImmedValue. Likewise setImmedValue -> setImm 
llvm-svn: 45453
 2007-12-30 20:49:49 +00:00
Bill Wendling 7749a9014b If we have a load of a global address that's not modified during the 
function, then go ahead and hoist it out of the loop. This is the result:

$ cat a.c
volatile int G;

int A(int N) {
  for (; N > 0; --N)
    G++;
}
$ llc -o - -relocation-model=pic
_A:
...
LBB1_2: # bb
        movl    L_G$non_lazy_ptr-"L1$pb"(%eax), %esi
        incl    (%esi)
        incl    %edx
        cmpl    %ecx, %edx
        jne     LBB1_2  # bb
...
$ llc -o - -relocation-model=pic -machine-licm
_A:
...
        movl    L_G$non_lazy_ptr-"L1$pb"(%eax), %eax
LBB1_2: # bb
        incl    (%eax)
        incl    %edx
        cmpl    %ecx, %edx
        jne     LBB1_2  # bb
...

I'm limiting this to the MOV32rm x86 instruction for now.

llvm-svn: 45444
 2007-12-30 03:18:58 +00:00
Chris Lattner b3fd2d7b63 use simplified operand addition methods. 
llvm-svn: 45437
 2007-12-30 01:01:54 +00:00
Chris Lattner 4b762496a9 Shrinkify the machine operand creation method names. 
llvm-svn: 45433
 2007-12-30 00:45:46 +00:00
Chris Lattner f3ebc3f3d2 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Chris Lattner a087a8d2ce remove attribution from lib Makefiles. 
llvm-svn: 45415
 2007-12-29 20:09:26 +00:00
Chris Lattner 4e6cbb2fe2 this is done. 
llvm-svn: 45408
 2007-12-29 19:38:02 +00:00
Chris Lattner d2b8a36f0e One readme entry is done, one is really easy (Evan, want to investigate 
eliminating the llvm.x86.sse2.loadl.pd intrinsic?), one shuffle optzn
may be done (if shufps is better than pinsw, Evan, please review), and
we already know about LICM of simple instructions.

llvm-svn: 45407
 2007-12-29 19:31:47 +00:00
Chris Lattner 3b6a82118b Fold comparisons against a constant nan, and optimize ORD/UNORD 
comparisons with a constant.  This allows us to compile isnan to:

_foo:
	fcmpu cr7, f1, f1
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 

instead of:

LCPI1_0:					;  float
	.space	4
_foo:
	lis r2, ha16(LCPI1_0)
	lfs f0, lo16(LCPI1_0)(r2)
	fcmpu cr7, f1, f0
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 

llvm-svn: 45405
 2007-12-29 08:37:08 +00:00
Chris Lattner 33de0c6e92 this xform is implemented. 
llvm-svn: 45404
 2007-12-29 08:19:39 +00:00
Chris Lattner 07ccbfa64a Codegen: 
as:

_bar:
	pushl	%esi
	subl	$8, %esp
	movl	16(%esp), %esi
	call	L_foo$stub
	fstps	(%esi)
	addl	$8, %esp
	popl	%esi
	#FP_REG_KILL
	ret

instead of:

_bar:
	pushl	%esi
	subl	$8, %esp
	movl	16(%esp), %esi
	call	L_foo$stub
	fstpl	(%esi)
	cvtsd2ss	(%esi), %xmm0
	movss	%xmm0, (%esi)
	addl	$8, %esp
	popl	%esi
	#FP_REG_KILL
	ret

llvm-svn: 45401
 2007-12-29 06:57:38 +00:00
Chris Lattner 8013bd339b avoid going through a stack slot to convert from fpstack to xmm reg 
if we are just going to store it back anyway.  This improves things 
like:
double foo();
void bar(double *P) { *P = foo(); }

llvm-svn: 45399
 2007-12-29 06:41:28 +00:00
Chris Lattner 62ba67c0f7 add a note 
llvm-svn: 45397
 2007-12-29 05:51:58 +00:00
Chris Lattner 7cafd92aa9 expand note. 
llvm-svn: 45393
 2007-12-29 01:05:01 +00:00
Chris Lattner 9d53b611d1 add a note. 
llvm-svn: 45388
 2007-12-28 22:30:05 +00:00
Chris Lattner d798002401 add a note. 
llvm-svn: 45387
 2007-12-28 21:50:40 +00:00
Chris Lattner 180f0e9044 add a note 
llvm-svn: 45377
 2007-12-28 04:42:05 +00:00
Chris Lattner 6c234bf58f add a simple hack 
llvm-svn: 45343
 2007-12-24 19:27:46 +00:00
Gordon Henriksen 84c7325ca1 Setting GlobalDirective in TargetAsmInfo by default rather than 
providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.

llvm-svn: 45338
 2007-12-23 20:58:16 +00:00
Chris Lattner 00602f6105 fix some warnings. This code needs to be de-tabified :( 
llvm-svn: 45325
 2007-12-22 22:47:03 +00:00
Chris Lattner 91f3379660 fix strict-aliasing violation 
llvm-svn: 45324
 2007-12-22 22:45:38 +00:00
Anton Korobeynikov 1b1250770c Erm, really disable :) 
llvm-svn: 45319
 2007-12-22 20:46:24 +00:00
Anton Korobeynikov d34112a4ee Disable, until we'll really need it 
llvm-svn: 45318
 2007-12-22 20:41:12 +00:00
Evan Cheng 345a00ba05 Preliminary PIC JIT support for X86 (32-bit) / Darwin. 
llvm-svn: 45313
 2007-12-22 09:40:20 +00:00
Evan Cheng db33a0211b Oops. 
llvm-svn: 45312
 2007-12-22 09:14:34 +00:00
Evan Cheng f4f52dbc8c Fix JIT code emission of X86::MovePCtoStack. 
llvm-svn: 45307
 2007-12-22 02:26:46 +00:00
Evan Cheng ac134551c6 Allow JIT with non-static relocation model. 
llvm-svn: 45304
 2007-12-22 01:12:14 +00:00
Anton Korobeynikov 1e8c1308bb Fix silly typo in the FP CEP handling. 
llvm-svn: 45300
 2007-12-21 23:33:44 +00:00
Duncan Sands 85f26f28b9 Fix a brain fart by our beloved leader (the content 
of this patch is the last line).

llvm-svn: 45289
 2007-12-21 20:18:41 +00:00
Nicolas Geoffray 31a2c3948e Fix unintented change from last commit 
llvm-svn: 45282
 2007-12-21 12:22:29 +00:00
Nicolas Geoffray 80c741e160 Enable EH for linux/ppc32 targets 
llvm-svn: 45281
 2007-12-21 12:19:44 +00:00
Evan Cheng 78c460c8c4 New entry. 
llvm-svn: 45280
 2007-12-21 01:31:58 +00:00
Evan Cheng 01c7c198ee Fix JIT encoding for CMPSD as well. 
llvm-svn: 45268
 2007-12-20 19:57:09 +00:00
Scott Michel 5f1470f03a More working CellSPU tests: 
- vec_const.ll: Vector constant loads
- immed64.ll: i64, f64 constant loads

llvm-svn: 45242
 2007-12-20 00:44:13 +00:00
Dale Johannesen eadbf4b91c Enable EH on PPC Darwin. This basically works; there 
are a couple of issues that show up with the optimizer,
but I don't think they're really EH problems.
(llvm-gcc testsuite users note:  By default the testsuite
uses the unwinding code that's built as part of your local
llvm-gcc, which does not work.  You need to trick it into
using the installed system unwinding code to get useful
results.)

llvm-svn: 45221
 2007-12-19 21:54:36 +00:00
Scott Michel 5ecac82f71 CellSPU testcase, extract_elt.ll: extract vector element. 
llvm-svn: 45219
 2007-12-19 21:17:42 +00:00
Scott Michel 098c113bc8 Two more test cases: or_ops.ll (arithmetic or operations) and vecinsert.ll 
(vector insertions)

llvm-svn: 45216
 2007-12-19 20:15:47 +00:00
Scott Michel 9b834469e0 Add new immed16.ll test case, fix CellSPU errata to make test case work. 
llvm-svn: 45196
 2007-12-19 07:35:06 +00:00
Bill Wendling ca77ecb40a Mark the "isRemat" instruction as never having side effects. 
llvm-svn: 45190
 2007-12-19 06:07:48 +00:00
Chris Lattner 2583a66295 add an obvious load folding missed optzn. 
llvm-svn: 45161
 2007-12-18 16:48:14 +00:00
Christopher Lamb 8b09a464b4 Fold certain additions through selects (and their compares) so as to eliminate subtractions. This code is often produced by the SMAX expansion in SCEV. 
This implements test/Transforms/InstCombine/2007-12-18-AddSelCmpSub.ll

llvm-svn: 45158
 2007-12-18 09:34:41 +00:00
Chris Lattner 52a9e40789 add a missed case. 
llvm-svn: 45141
 2007-12-18 01:19:18 +00:00
Bill Wendling b3d85a5d4b Add "mayHaveSideEffects" and "neverHasSideEffects" flags to some instructions. I 
based what flag to set on whether it was already marked as
"isRematerializable". If there was a further check to determine if it's "really"
rematerializable, then I marked it as "mayHaveSideEffects" and created a check
in the X86 back-end similar to the remat one.

llvm-svn: 45132
 2007-12-17 23:07:56 +00:00
Scott Michel c5cccb9e60 - Restore some i8 functionality in CellSPU 
- New test case: nand.ll

llvm-svn: 45130
 2007-12-17 22:32:34 +00:00
Bill Wendling a2401be121 LD_Fp64m should have "isRematerializable" set. 
llvm-svn: 45128
 2007-12-17 22:17:14 +00:00
Bill Wendling 939526a930 As per feedback, revised comments to (hopefully) make the different side effect 
flags clearer.

llvm-svn: 45120
 2007-12-17 21:02:07 +00:00
Christopher Lamb edf0788758 Change the PointerType api for creating pointer types. The old functionality of PointerType::get() has become PointerType::getUnqual(), which returns a pointer in the generic address space. The new prototype of PointerType::get() requires both a type and an address space. 
llvm-svn: 45082
 2007-12-17 01:12:55 +00:00
Chris Lattner 2af27c202c don't violate C TBAA rules, use FloatToBits instead. 
llvm-svn: 45076
 2007-12-16 20:41:33 +00:00
Chris Lattner e3b05fe31b fix a questionable cast, thanks to Mike Stump for pointing this out. 
llvm-svn: 45075
 2007-12-16 20:26:54 +00:00
Chris Lattner dab6bd902e Fix the JIT encoding of cmp*ss, which aborts with this assertion currently: 
X86CodeEmitter.cpp:378: failed assertion `0 && "Immediate size not set!"'

I *think* this is right, but Evan, please verify.  It also looks like
CMPSDrr and maybe others are missing this info.  Evan, plz investigate.

llvm-svn: 45074
 2007-12-16 20:12:41 +00:00