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eef57fed6e
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6723 Commits

Author SHA1 Message Date
Chris Lattner
eef57fed6e switch return value passing and the x86-64 calling convention information 
over to being autogenerated from the X86CallingConv.td file.

llvm-svn: 34722
 2007-02-28 04:55:35 +00:00
Chris Lattner
3eb95551d7 make subtarget references work. 
llvm-svn: 34721
 2007-02-28 04:51:41 +00:00
Evan Cheng
db591ecaa8 Make requiresRegisterScavenging determination on a per MachineFunction basis. 
llvm-svn: 34711
 2007-02-28 00:59:19 +00:00
Evan Cheng
cfb0f8cfc6 Temporary: make R12 available in ARM mode if RegScavenger is being used. 
llvm-svn: 34709
 2007-02-28 00:22:44 +00:00
Evan Cheng
fa23d8e51f Start making use of RegScavenger. 
llvm-svn: 34708
 2007-02-28 00:21:58 +00:00
Evan Cheng
116f97f2c7 PEI now passes a RegScavenger ptr to eliminateFrameIndex. 
llvm-svn: 34707
 2007-02-28 00:21:17 +00:00
Evan Cheng
4357509984 Minor tweak. Allocate r0 to r3 in reverse order, r3 is least likely to be livein to a function. 
llvm-svn: 34701
 2007-02-27 23:03:55 +00:00
Chris Lattner
da909a2df7 reenable generation of CC info 
llvm-svn: 34699
 2007-02-27 22:12:19 +00:00
Evan Cheng
b314459812 Back out previous commit temporarily. 
llvm-svn: 34694
 2007-02-27 21:47:22 +00:00
Evan Cheng
a19dd6f388 Let MRegisterInfo now owns RegScavenger; eliminateFrameIndex must preserve register kill info. 
llvm-svn: 34692
 2007-02-27 21:12:35 +00:00
Chris Lattner
0d05dc2523 implement CCMatchIfCC in terms of CCMatchIf 
llvm-svn: 34685
 2007-02-27 20:45:02 +00:00
Chris Lattner
4d29a90170 build cc info 
llvm-svn: 34684
 2007-02-27 20:44:31 +00:00
Chris Lattner
da49dee51d a note 
llvm-svn: 34670
 2007-02-27 17:21:09 +00:00
Nicolas Geoffray
a144ebf568 Fix parenthesis for BCTRL_{ELF|Macho} test. 
llvm-svn: 34668
 2007-02-27 13:10:41 +00:00
Nicolas Geoffray
a562e5c1c5 Differentiate between the MachO and the ELF ABI the CALL instruction. 
llvm-svn: 34667
 2007-02-27 13:01:19 +00:00
Jim Laskey
f5b5a3cf77 Duplicate use of LR, take 2. 
llvm-svn: 34666
 2007-02-27 11:55:45 +00:00
Chris Lattner
90c768b913 Add calling convention info 
llvm-svn: 34661
 2007-02-27 06:59:52 +00:00
Chris Lattner
9f0e5d8b03 move target independent calling convention stuff to TargetCallingConv.td 
llvm-svn: 34659
 2007-02-27 05:57:32 +00:00
Chris Lattner
2b737abea1 fill in some holes 
llvm-svn: 34658
 2007-02-27 05:51:05 +00:00
Chris Lattner
9117648533 switch x86-64 return value lowering over to using same mechanism as argument 
lowering uses.

llvm-svn: 34657
 2007-02-27 05:28:59 +00:00
Chris Lattner
11a1c2113c Minor refactoring of CC Lowering interfaces 
llvm-svn: 34656
 2007-02-27 05:13:54 +00:00
Chris Lattner
e34136f6d5 move CC Lowering stuff to its own public interface 
llvm-svn: 34655
 2007-02-27 04:43:02 +00:00
Chris Lattner
cac44e283d refactor x86-64 argument lowering yet again, this time eliminating templates, 
'clients', etc, and adding CCValAssign instead.

llvm-svn: 34654
 2007-02-27 04:18:15 +00:00
Evan Cheng
f54dbab209 Backing out Jim's LR spill changes. This was causing llvm-gcc bootstrapping 
to infinite loop:
PPCMachineFunctionInfo.h updated: 1.2 -> 1.3
PPCRegisterInfo.cpp updated: 1.110 -> 1.111
PPCRegisterInfo.h updated: 1.28 -> 1.29

llvm-svn: 34652
 2007-02-27 02:55:29 +00:00
Chris Lattner
d4cd3a31e6 always lower to RETFLAG, never leave it as just ret. 
llvm-svn: 34639
 2007-02-26 19:44:02 +00:00
Chris Lattner
656996aab8 fix attribution 
llvm-svn: 34637
 2007-02-26 18:56:07 +00:00
Chris Lattner
948965f809 Add a description of the X86-64 calling convention and the return 
conventions.  This doesn't do anything yet, but may in the future.

llvm-svn: 34636
 2007-02-26 18:17:14 +00:00
Chris Lattner
7165ee9b6b switch to smallvector 
llvm-svn: 34633
 2007-02-26 07:59:53 +00:00
Chris Lattner
3fe1132dcd initial hack at splitting the x86-64 calling convention info out from the 
mechanics that process it.  I'm still not happy with this, but it's a step
in the right direction.

llvm-svn: 34631
 2007-02-26 07:50:02 +00:00
Chris Lattner
d0c941c89e the truncate must always be done, it's only the assert that is conditional. 
llvm-svn: 34628
 2007-02-26 05:21:05 +00:00
Chris Lattner
decf97fae2 add an accessor. 
llvm-svn: 34625
 2007-02-26 04:01:25 +00:00
Chris Lattner
2e7125dc74 in X86-64 CCC, i8/i16 arguments are already properly zext/sext'd on input. 
Capture this so that downstream zext/sext's are optimized out.  This
compiles:
  int test(short X) { return (int)X; }

to:

_test:
        movl %edi, %eax
        ret

instead of:

_test:
        movswl %di, %eax
        ret


GCC produces this bizarre code:

_test:
        movw    %di, -12(%rsp)
        movswl  -12(%rsp),%eax
        ret

llvm-svn: 34623
 2007-02-26 03:18:56 +00:00
Chris Lattner
ad14e21b97 Fix an X86-64 abi bug. We now compile: 
void foo(short);
void bar(unsigned short A) {
  foo(A);
}

into:

_bar:
        subq $8, %rsp
        movswl %di, %edi
        call _foo
        addq $8, %rsp
        ret

instead of:

_bar:
        subq $8, %rsp
        call _foo
        addq $8, %rsp
        ret

Testcase here: test/CodeGen/X86/x86-64-shortint.ll

llvm-svn: 34615
 2007-02-25 23:10:46 +00:00
Chris Lattner
15c167cc61 fix CodeGen/X86/2007-02-25-FastCCStack.ll, a regression from my patch last 
night:  fastcc returns should only go in XMM0 if we have SSE2 or above.

llvm-svn: 34613
 2007-02-25 22:23:46 +00:00
Chris Lattner
796625a49d no really, this is the right patch 
llvm-svn: 34605
 2007-02-25 20:01:40 +00:00
Chris Lattner
49fc72110a always promote float varargs to double. 
llvm-svn: 34604
 2007-02-25 19:59:18 +00:00
Chris Lattner
b5ce97a83a one important bugfix: PPC32 didn't have both elf and macho support for 
external symbols and global addresses.  Add the missing ones.

one important workaround: PPCISD::CALL is matched by both PPCcall_ELF
and PPCcall_Macho, disable the _ELF patterns for now.

llvm-svn: 34601
 2007-02-25 19:20:53 +00:00
Dale Johannesen
f6f34ec2e0 cosmetic changes from review of last patch. obvious 
llvm-svn: 34598
 2007-02-25 18:31:31 +00:00
Chris Lattner
65ba08d627 fastcc functions that return double values now return them in xmm0 on x86-32. 
This implements CodeGen/X86/fp-stack-ret.ll:test[23]

llvm-svn: 34592
 2007-02-25 09:31:16 +00:00
Chris Lattner
e4ba88824d allow vectors to be passed to stdcall/fastcall functions 
llvm-svn: 34590
 2007-02-25 09:14:25 +00:00
Chris Lattner
fac0b30da0 move LowerRET into the 'Return Value Calling Convention Implementation' 
section of the file.

llvm-svn: 34589
 2007-02-25 09:12:39 +00:00
Chris Lattner
65d915a3b6 make all Lower*CallTo implementations use LowerCallResult to handle their 
result value stuff.  This eliminates a bunch of duplicated code and now
GetRetValueLocs is the sole place that decides where a value is returned.

llvm-svn: 34588
 2007-02-25 09:10:05 +00:00
Chris Lattner
423224a7b4 pass the calling convention into Lower*CallTo, instead of using ad-hoc flags. 
llvm-svn: 34587
 2007-02-25 09:06:15 +00:00
Chris Lattner
8fa75c3ae8 factor a bunch of code out of LowerCCCCallTo into a new LowerCallResult 
function.  This function now uses GetRetValueLocs to determine *where*
the result values are located and concerns itself with *how* to pull the
values out.

llvm-svn: 34586
 2007-02-25 08:59:22 +00:00
Chris Lattner
3bfbc23ccd move some code around, pass in calling conv, even though it is unused 
llvm-svn: 34585
 2007-02-25 08:29:00 +00:00
Chris Lattner
f119813ff4 simplify result value lowering by splitting the selection of *where* to return 
registers out from the logic of *how* to return them.

This changes X86-64 to mark EAX live out when returning a 32-bit value,
where before it marked RAX liveout.

llvm-svn: 34582
 2007-02-25 08:15:11 +00:00
Chris Lattner
bcce79717b make void-return not a special case 
llvm-svn: 34579
 2007-02-25 07:18:38 +00:00
Chris Lattner
d00fcb3277 eliminate a bunch more temporary vectors from X86 lowering. 
llvm-svn: 34578
 2007-02-25 07:10:00 +00:00
Chris Lattner
f7eeef816d eliminate temporary vectors created during X86 lowering. 
llvm-svn: 34577
 2007-02-25 06:40:16 +00:00
Chris Lattner
6f25082e67 remove std::vector's in RET lowering. 
llvm-svn: 34576
 2007-02-25 06:21:57 +00:00