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51 Commits

Author SHA1 Message Date
Dale Johannesen
86098bd6a6 Add "inreg" field to CallSDNode (doesn't increase 
its size).  Adjust various lowering functions to
pass this info through from CallInst.  Use it to
implement sseregparm returns on X86.  Remove
X86_ssecall calling convention.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56677 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-26 19:31:26 +00:00
Dale Johannesen
c9c6da61ac Accept 'inreg' attribute on x86 functions as 
meaning sse_regparm (i.e. float/double values go
in XMM0 instead of ST0).  Update documentation
to reflect reality.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56619 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-25 20:47:45 +00:00
Arnold Schwaighofer
290ae0398e Change the calling convention used when tail call optimization is enabled from CC_X86_32_TailCall to CC_X86_32_FastCC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56436 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-22 14:50:07 +00:00
Evan Cheng
e2471a9169 If SSE2 is available, x86 should pass first 3 f32/f64 arguments in XMM registers for fastcc calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55840 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 17:24:07 +00:00
Evan Cheng
4a03775777 For whatever the reason, x86 CallingConv::Fast (i.e. fastcc) was not passing scalar arguments in registers. This patch defines a new fastcc CC which is slightly different from the FastCall CC. In addition to passing integer arguments in ECX and EDX, it also specify doubles are passed in 8-byte slots which are 8-byte aligned (instead of 4-byte aligned). This avoids a potential performance hazard where doubles span cacheline boundaries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55807 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-04 22:59:58 +00:00
Dale Johannesen
a68f9013f2 Add v2f32 (MMX) type to X86. Support is primitive: 
load,store,call,return,bitcast.  This is enough to
make call and return work.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52691 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-24 22:01:44 +00:00
Anton Korobeynikov
2810d675f8 Fix FP return for Win64 ABI 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50342 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 07:40:07 +00:00
Anton Korobeynikov
7255193b4f Handle fp80 for win64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50324 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 22:54:09 +00:00
Evan Cheng
ee472b1081 MMX argument passing fixes: 
On Darwin / Linux x86-32, v8i8, v4i16, v2i32 values are passed in MM[0-2].                                                                                                                                      
On Darwin / Linux x86-32, v1i64 values are passed in memory.                                                                                                                                                    
On Darwin x86-64, v8i8, v4i16, v2i32 values are passed in XMM[0-7].                                                                                                                                     
On Darwin x86-64, v1i64 values are passed in 64-bit GPRs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50257 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 07:56:45 +00:00
Dan Gohman
c2ffd4b1cb Add XMM1 as a second return value register for f32 and f64 on x86-64. This 
is needed for the x86-64-ABI handling of structs that contain floating-point
members that are returned by value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49441 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-09 17:54:37 +00:00
Dan Gohman
719e64e8c1 Add DX as a second return value register for i16 on x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49440 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-09 17:53:38 +00:00
Anton Korobeynikov
67073f1cbd Add new CC lowering rule: provide a list of registers, which can be 'shadowed', 
when some another register is used for argument passing.
Currently is used on Win64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49079 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-02 05:23:57 +00:00
Anton Korobeynikov
82818eb223 Minor typo fixes. Also add another FIXME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48710 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-23 20:32:06 +00:00
Anton Korobeynikov
1a979d9eab Add convenient helper for win64 check. Simplify things slightly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48691 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-22 20:57:27 +00:00
Anton Korobeynikov
8f88cb0899 Initial support for Win64 calling conventions. Still in early state. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48690 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-22 20:37:30 +00:00
Chris Lattner
0353526ed1 Enable support for returning two long-double values in ST(0)/ST(1). 
This allows us to compile fp-stack-2results.ll into:

_test:
	fldz
	fld1
	ret

which returns 1 in ST(0) and 0 in ST(1).  This is needed for x86-64
_Complex long double.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48632 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-21 05:57:20 +00:00
Dale Johannesen
3edd6dcf82 MMX vectors are passed 4-byte aligned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47483 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-22 17:47:28 +00:00
Dale Johannesen
e672af15d6 Implement sseregparm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46764 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 20:46:33 +00:00
Evan Cheng
2cbdd27305 SSE varargs arguments are passed in memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46262 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-22 23:26:53 +00:00
Duncan Sands
4bdad51596 Need to handle any 'nest' parameter before integer 
parameters, since otherwise it won't be passed in
the right register.  With this change trampolines
work on x86-64 (thanks to Luke Guest for providing
access to an x86-64 box).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46192 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-19 16:42:10 +00:00
Evan Cheng
6bfa8a121d Rename CCIfStruct to CCIfByVal and CCStructAssign to CCPassByVal. Remove unused parameters of CCStructAssign and add size and alignment requirement info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45997 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-15 03:34:58 +00:00
Evan Cheng
bdfd5ef823 Both x86-32 and x86-64 handle byval parameter attributes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45996 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-15 03:15:41 +00:00
Duncan Sands
30d15751c8 Unbreak x86-32 darwin long double! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45703 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 16:36:38 +00:00
Duncan Sands
004a81dcc7 Fix long double support on x86-32 linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45701 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 13:44:22 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:36:04 +00:00
Dale Johannesen
6e959b9afe x86-32 long doubles are 4-byte aligned on the stack 
for parameter passing (only for that, on Darwin).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45038 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-14 19:25:34 +00:00
Nate Begeman
d73ab8884f Support returning non-power-of-2 vectors to unblock some work 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44371 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-27 19:28:48 +00:00
Duncan Sands
87b665d3de Eliminate the recently introduced CCAssignToStackABISizeAlign 
in favour of teaching CCAssignToStack that size 0 and/or align
0 means to use the ABI values.  This seems a neater solution.
It is safe since no legal value type has size 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44107 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 08:29:13 +00:00
Dale Johannesen
e3ef744d3e Add CCAssignToStackABISizeAlign for convenience in 
dealing with types whose size & alignment are
different on different subtargets.  Use it for x86 f80.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43988 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-10 22:07:15 +00:00
Duncan Sands
7fef59f7e5 Clarify that fastcc has a problem with nested function 
trampolines, rather than with nested functions themselves.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42955 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-13 07:38:37 +00:00
Arnold Schwaighofer
48abc5cf6b Corrected many typing errors. And removed 'nest' parameter handling 
for fastcc from X86CallingConv.td.  This means that nested functions
are not supported for calling convention 'fastcc'.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42934 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-12 21:30:57 +00:00
Arnold Schwaighofer
c85e1716f0 Added tail call optimization to the x86 back end. It can be 
enabled by passing -tailcallopt to llc.  The optimization is
performed if the following conditions are satisfied:
* caller/callee are fastcc
* elf/pic is disabled OR
  elf/pic enabled + callee is in module + callee has
  visibility protected or hidden


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42870 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-11 19:40:01 +00:00
Dale Johannesen
73328d14ac More long double fixes. x86_64 should build now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42155 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-19 23:55:34 +00:00
Dale Johannesen
6a30811d5c Get X86 long double calling convention to work 
(on Darwin, anyway).  Fix some table omissions for
LD arithmetic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40877 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 21:31:06 +00:00
Duncan Sands
b116fac90f Trampoline codegen support for X86-32. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40566 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-27 20:02:49 +00:00
Rafael Espindola
1aa7efbd2c Add the byval attribute 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37940 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-06 10:57:03 +00:00
Dan Gohman
1866f6ec7b Vector results may be returned in XMM0 and XMM1, not just XMM0. With 
the recent lowering changes, this allows types like <4 x double> to
be returned, using two vector registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37844 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-02 16:21:53 +00:00
Chris Lattner
52387be1e0 If a function is vararg, never pass inreg arguments in registers. Thanks to 
Anton for half of this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37641 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-19 00:13:10 +00:00
Bill Wendling
577c7d9dca Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35531 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-31 09:36:12 +00:00
Bill Wendling
db5c993121 Match GCC's MMX calling convention. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35523 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-31 01:03:53 +00:00
Bill Wendling
e2501b303c Add MMX calling conventions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35489 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-30 00:35:22 +00:00
Chris Lattner
70500805d5 bugfix: fastcall does not require the first two params to be marked 'inreg', 
they always get registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34748 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 18:35:11 +00:00
Chris Lattner
011bcc8cdd add new CC_X86_32_FastCall calling conv, which describes fastcall on win32. 
Factor out a CC_X86_32_Common convention, which is the part shared between
ccc, stdcall and fastcall


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34732 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 06:20:01 +00:00
Chris Lattner
423c5f44f8 switch LowerCCCCallTo over to using an autogenerated callingconv 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34727 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 05:31:48 +00:00
Chris Lattner
370bdda526 rename stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34726 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 05:30:29 +00:00
Chris Lattner
3d5591038a make subtarget references work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34721 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 04:51:41 +00:00
Chris Lattner
d637a8b436 Add calling convention info 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34661 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-27 06:59:52 +00:00
Chris Lattner
00836648ae move target independent calling convention stuff to TargetCallingConv.td 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34659 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-27 05:57:32 +00:00
Chris Lattner
d50110d8dc fill in some holes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34658 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-27 05:51:05 +00:00
Chris Lattner
bffc1b3c4e fix attribution 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34637 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-26 18:56:07 +00:00