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24860 Commits

Author SHA1 Message Date
Chris Lattner 5114596467 One of these xforms is only safe with unsafe math enabled. 
llvm-svn: 28446
 2006-05-24 00:49:32 +00:00
Chris Lattner 33165c246c Fix CodeGen/Generic/vector.ll:test_div with altivec. 
llvm-svn: 28445
 2006-05-24 00:15:25 +00:00
Chris Lattner de6909734d New testcase 
llvm-svn: 28444
 2006-05-24 00:12:50 +00:00
Chris Lattner b56d22c2f6 Handle SETO* like we handle SET*, restoring behavior after Evan's setcc 
change.  This fixes PowerPC/fnegsel.ll.

llvm-svn: 28443
 2006-05-24 00:06:44 +00:00
Chris Lattner de177e016e Print struct return functions and calls as actually returning the hidden 
argument struct pointer, enabling ABI compatibility for the CBE with
platforms with strange struct-return ABIs.  This fixes 252.eon and
CoyoteBench/fftbench on Darwin/X86 among other things.

llvm-svn: 28442
 2006-05-23 23:39:48 +00:00
Chris Lattner a58f559848 Fix file header comment 
llvm-svn: 28441
 2006-05-23 23:20:42 +00:00
Evan Cheng 7068a93cae Better way to check for vararg. 
llvm-svn: 28440
 2006-05-23 21:08:24 +00:00
Evan Cheng 17e734f0a6 Remove PreprocessCCCArguments and PreprocessFastCCArguments now that 
FORMAL_ARGUMENTS nodes include a token operand.

llvm-svn: 28439
 2006-05-23 21:06:34 +00:00
Chris Lattner 8be5be817c Implement an annoying part of the Darwin/X86 abi: the callee of a struct 
return argument pops the hidden struct pointer if present, not the caller.

For example, in this testcase:

struct X { int D, E, F, G; };
struct X bar() {
  struct X a;
  a.D = 0;
  a.E = 1;
  a.F = 2;
  a.G = 3;
  return a;
}
void foo(struct X *P) {
  *P = bar();
}

We used to emit:

_foo:
        subl $28, %esp
        movl 32(%esp), %eax
        movl %eax, (%esp)
        call _bar
        addl $28, %esp
        ret
_bar:
        movl 4(%esp), %eax
        movl $0, (%eax)
        movl $1, 4(%eax)
        movl $2, 8(%eax)
        movl $3, 12(%eax)
        ret

This is correct on Linux/X86 but not Darwin/X86.  With this patch, we now
emit:

_foo:
        subl $28, %esp
        movl 32(%esp), %eax
        movl %eax, (%esp)
        call _bar
***     addl $24, %esp
        ret
_bar:
        movl 4(%esp), %eax
        movl $0, (%eax)
        movl $1, 4(%eax)
        movl $2, 8(%eax)
        movl $3, 12(%eax)
***     ret $4

For the record, GCC emits (which is functionally equivalent to our new code):

_bar:
        movl    4(%esp), %eax
        movl    $3, 12(%eax)
        movl    $2, 8(%eax)
        movl    $1, 4(%eax)
        movl    $0, (%eax)
        ret     $4
_foo:
        pushl   %esi
        subl    $40, %esp
        movl    48(%esp), %esi
        leal    16(%esp), %eax
        movl    %eax, (%esp)
        call    _bar
        subl    $4, %esp
        movl    16(%esp), %eax
        movl    %eax, (%esi)
        movl    20(%esp), %eax
        movl    %eax, 4(%esi)
        movl    24(%esp), %eax
        movl    %eax, 8(%esi)
        movl    28(%esp), %eax
        movl    %eax, 12(%esi)
        addl    $40, %esp
        popl    %esi
        ret

This fixes SingleSource/Benchmarks/CoyoteBench/fftbench with LLC and the
JIT, and fixes the X86-backend portion of PR729.  The CBE still needs to
be updated.

llvm-svn: 28438
 2006-05-23 18:50:38 +00:00
Evan Cheng ac4f66ff24 -enable-unsafe-fp-math implies -enable-finite-only-fp-math 
llvm-svn: 28437
 2006-05-23 18:18:46 +00:00
Vladimir Prus 5b917e48a2 Make class comment visible in Doxygen. 
llvm-svn: 28436
 2006-05-23 15:32:15 +00:00
Vladimir Prus df1d439849 Fix missing include 
llvm-svn: 28435
 2006-05-23 13:43:15 +00:00
Evan Cheng a9194a8dbd Added a test case for FP equality check. 
llvm-svn: 28434
 2006-05-23 06:41:23 +00:00
Evan Cheng 1c5b7d12df Incorrect SETCC CondCode used for FP comparisons. 
llvm-svn: 28433
 2006-05-23 06:40:47 +00:00
Evan Cheng ea1450742e Added option -enable-finite-only-fp-math. When on, the codegen can assume that 
FP arithmetic arguments and results are never NaNs or +=Infs. This includes
ignoring parity flag (PF) when checking for FP equality.

llvm-svn: 28432
 2006-05-23 06:39:12 +00:00
Rafael Espindola 27f8bdc7e5 implement minimal versions of 
ARMAsmPrinter::runOnMachineFunction
LowerFORMAL_ARGUMENTS
ARMInstrInfo::isMoveInstr

llvm-svn: 28431
 2006-05-23 02:48:20 +00:00
Chris Lattner 17d145eb2c Describe how to add a custom test. 
llvm-svn: 28430
 2006-05-23 01:40:20 +00:00
Chris Lattner 15f17eca3d Wrap long lines fix typo 
llvm-svn: 28429
 2006-05-23 01:25:11 +00:00
Evan Cheng 26ba25f910 A isel deficiency. 
llvm-svn: 28427
 2006-05-22 05:54:49 +00:00
Reid Spencer cb10fdc74d For PR784: 
Support Win32 platforms for llvm-gcc path. Patch by Anton Korobeynikov

llvm-svn: 28426
 2006-05-21 10:40:20 +00:00
Evan Cheng 85b6232b53 Back out indirect branch load folding hack. It broke some tests. 
llvm-svn: 28425
 2006-05-21 06:28:50 +00:00
Chris Lattner 80b0a70911 Add a note 
llvm-svn: 28424
 2006-05-21 03:57:07 +00:00
Owen Anderson 80b1b4d41e Make TargetData strings less redundant. 
llvm-svn: 28423
 2006-05-20 23:28:54 +00:00
Chris Lattner d0622b6894 Silence a bogus gcc warning 
llvm-svn: 28422
 2006-05-20 23:14:03 +00:00
Chris Lattner 482fb65144 Fix a parsing bug that caused 7 llvm-test regressions on PPC last night. 
I'm suprised it didn't cause more!

llvm-svn: 28421
 2006-05-20 21:16:59 +00:00
Evan Cheng 401049ce33 - Use of load's chain result should be redirected to load's chain operand. 
If it reads the chain result of the call, then the use, callseq_start,
  and call would form a cycle!
- Don't forget handle node replacement!
- There could also be a TokenFactor between the load and the callseq_start.

llvm-svn: 28420
 2006-05-20 09:21:39 +00:00
Evan Cheng 0643f902be A new entry 
llvm-svn: 28419
 2006-05-20 07:44:53 +00:00
Evan Cheng a26c451fa2 Missing break statements. 
llvm-svn: 28418
 2006-05-20 07:44:28 +00:00
Evan Cheng b9ac06bb33 Remove unused patterns. 
llvm-svn: 28417
 2006-05-20 01:40:16 +00:00
Evan Cheng f838cfcfbe Handle indirect call which folds a load manually. This never matches by 
the TableGen generated code since the load's chain result is read by
the callseq_start node.

llvm-svn: 28416
 2006-05-20 01:36:52 +00:00
Owen Anderson f7db631b7d Sparc is big-endian. 
llvm-svn: 28415
 2006-05-20 00:49:30 +00:00
Owen Anderson 88812b5c0a Make all of the TargetMachine subclasses use the new string TargetData methods. 
This is part of the on-going work on PR 761.

llvm-svn: 28414
 2006-05-20 00:24:56 +00:00
Chris Lattner c4e9aff50f new testcase for csretcc 
llvm-svn: 28413
 2006-05-19 22:00:54 +00:00
Chris Lattner 29d2085716 Print csretcc calls like this: 
call csretcc void %structret( { sbyte }* %P )

instead of this:

        callcsretcc  void %structret( { sbyte }* %P )

llvm-svn: 28412
 2006-05-19 21:58:52 +00:00
Chris Lattner 620895a47a Fix misencoding of calling conventions 
llvm-svn: 28411
 2006-05-19 21:57:37 +00:00
Chris Lattner 3ea816fa48 pretty print csretcc for calls 
llvm-svn: 28410
 2006-05-19 21:54:03 +00:00
Chris Lattner 01dd6df5f3 CSRet allows varargs 
llvm-svn: 28409
 2006-05-19 21:34:04 +00:00
Chris Lattner 5bdc7127af Asmprint csret nicely 
llvm-svn: 28408
 2006-05-19 21:29:57 +00:00
Chris Lattner 09c0e99dfb Regenerate 
llvm-svn: 28407
 2006-05-19 21:28:53 +00:00
Chris Lattner 21cffffbb0 Add support for parsing csret 
llvm-svn: 28406
 2006-05-19 21:28:34 +00:00
Chris Lattner ef13ee3281 csret functions can be varargs (as can target cc's). Verify restrictions on 
csret functions.

llvm-svn: 28405
 2006-05-19 21:25:17 +00:00
Chris Lattner 1f7f383635 Add new calling convention, as documented in LangRef.html 
llvm-svn: 28404
 2006-05-19 21:19:02 +00:00
Chris Lattner 95ff1953f5 New calling convention I will be adding shortly. 
llvm-svn: 28403
 2006-05-19 21:15:36 +00:00
Chris Lattner 29d7bded45 Add a note 
llvm-svn: 28402
 2006-05-19 21:01:38 +00:00
Chris Lattner b22eb6304f Add a note 
llvm-svn: 28401
 2006-05-19 20:55:31 +00:00
Chris Lattner 17f1f1a56c Split the SSE readme items out into their own README. 
llvm-svn: 28400
 2006-05-19 20:51:43 +00:00
Chris Lattner 427ea6f0a7 Split FP-stack notes out of the main readme. Next up: splitting out SSE. 
llvm-svn: 28399
 2006-05-19 20:45:52 +00:00
Chris Lattner 240f846495 Move a target-independent note out of the X86 readme. 
llvm-svn: 28398
 2006-05-19 20:45:08 +00:00
Chris Lattner d6a25a08d1 Particularly ugly code. 
llvm-svn: 28397
 2006-05-19 19:41:33 +00:00
Chris Lattner 4203df25b8 new testcase 
llvm-svn: 28396
 2006-05-19 19:34:09 +00:00