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Commit Graph

44 Commits

Author SHA1 Message Date
Owen Anderson
aba398a5ce Add a flag for indirect branch instructions.
Target maintainers: please check that the instructions for your target are correctly marked.

llvm-svn: 44012
2007-11-12 07:39:39 +00:00
Evan Cheng
ded6550885 Local spiller optimization:
Turn a store folding instruction into a load folding instruction. e.g.
     xorl  %edi, %eax
     movl  %eax, -32(%ebp)
     movl  -36(%ebp), %eax
     orl   %eax, -32(%ebp)
=>
     xorl  %edi, %eax
     orl   -36(%ebp), %eax
     mov   %eax, -32(%ebp)
This enables the unfolding optimization for a subsequent instruction which will
also eliminate the newly introduced store instruction.

llvm-svn: 43192
2007-10-19 21:23:22 +00:00
Arnold Schwaighofer
6bcd9e7ec2 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'.

llvm-svn: 42934
2007-10-12 21:30:57 +00:00
Arnold Schwaighofer
d47210011e 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

llvm-svn: 42870
2007-10-11 19:40:01 +00:00
Evan Cheng
9af50ee6ef Commute x86 cmove instructions by swapping the operands and change the condition
to its inverse.
Testing this as llcbeta

llvm-svn: 42661
2007-10-05 23:13:21 +00:00
Evan Cheng
b069dd6a25 Add support to convert more 64-bit instructions to 3-address instructions.
llvm-svn: 42642
2007-10-05 18:20:36 +00:00
Evan Cheng
f658191412 ADC and SBB uses EFLAGS.
llvm-svn: 42640
2007-10-05 17:59:57 +00:00
Evan Cheng
f3c130a8b6 Enabling new condition code modeling scheme.
llvm-svn: 42459
2007-09-29 00:00:36 +00:00
Evan Cheng
826f0f94df Doh. Calls clobber EFLAGS.
llvm-svn: 42413
2007-09-27 19:01:55 +00:00
Evan Cheng
66eeb8440c Some assemblers do not recognize aliases pushfd, pushfq, popfd, and popfq. Just emit them as pushf and popf.
llvm-svn: 42371
2007-09-26 21:28:00 +00:00
Evan Cheng
37ee6eba29 Typos: POPQ -> POPFQ, POPD -> POPFD.
llvm-svn: 42348
2007-09-26 06:38:29 +00:00
Evan Cheng
5cb9dbaaa1 Add pushf{d|q}, popf{d|q} to push and pop EFLAGS register.
llvm-svn: 42335
2007-09-26 01:29:06 +00:00
Evan Cheng
36b3babfde Added support for new condition code modeling scheme (i.e. physical register dependency). These are a bunch of instructions that are duplicated so the x86 backend can support both the old and new schemes at the same time. They will be deleted after
all the kinks are worked out.

llvm-svn: 42285
2007-09-25 01:57:46 +00:00
Dan Gohman
41a6dea029 Use xorl instead of xorq to enter a zero into a 64-bit register.
llvm-svn: 42027
2007-09-17 14:55:08 +00:00
Dan Gohman
b9449c9118 Use "test reg,reg" in place of "cmp reg,0" for 64-bit operands. This was
previously only done for 32-bit and smaller operands.

llvm-svn: 42024
2007-09-17 14:35:24 +00:00
Dan Gohman
df419c2b4f Add patterns for SHLD64* and SHRD64*.
llvm-svn: 41975
2007-09-14 23:17:45 +00:00
Evan Cheng
13797e4a74 Add implicit def of EFLAGS on those instructions that may modify flags.
llvm-svn: 41962
2007-09-14 21:48:26 +00:00
Evan Cheng
b43255bc68 Remove (somewhat confusing) Imp<> helper, use let Defs = [], Uses = [] instead.
llvm-svn: 41863
2007-09-11 19:55:27 +00:00
Dan Gohman
3bc1bc2590 Avoid storing and reloading zeros and other constants from stack slots
by flagging the associated instructions as being trivially rematerializable.

llvm-svn: 41775
2007-09-07 21:32:51 +00:00
Evan Cheng
527fe7ab57 Mark load instructions with isLoad = 1.
llvm-svn: 41595
2007-08-30 05:49:43 +00:00
Evan Cheng
69bbf3ed2a Mac OS X X86-64 low 4G address not available.
llvm-svn: 40702
2007-08-01 23:46:10 +00:00
Dan Gohman
e3464e6bec Change the x86 assembly output to use tab characters to separate the
mnemonics from their operands instead of single spaces. This makes the
assembly output a little more consistent with various other compilers
(f.e. GCC), and slightly easier to read. Also, update the regression
tests accordingly.

llvm-svn: 40648
2007-07-31 20:11:57 +00:00
Evan Cheng
3493ec0ce1 Redo and generalize previously removed opt for pinsrw: (vextract (v4i32 bc (v4f32 s2v (f32 load ))), 0) -> (i32 load )
llvm-svn: 40628
2007-07-31 08:04:03 +00:00
Christopher Lamb
919ce03da6 Change the x86 backend to use extract_subreg for truncation operations. Passes DejaGnu, SingleSource and MultiSource.
llvm-svn: 40578
2007-07-29 01:24:57 +00:00
Bill Wendling
97342a9b0c Add missing SSE builtins:
__builtin_ia32_cvtss2si64
    __builtin_ia32_cvttss2si64
    __builtin_ia32_cvtsi642ss
    __builtin_ia32_cvtsd2si64
    __builtin_ia32_cvttsd2si64
    __builtin_ia32_cvtsi642sd

llvm-svn: 40411
2007-07-23 03:07:27 +00:00
Evan Cheng
53cb03b583 No more noResults.
llvm-svn: 40132
2007-07-21 00:34:19 +00:00
Evan Cheng
8312ed6f77 Change instruction description to split OperandList into OutOperandList and
InOperandList. This gives one piece of important information: # of results
produced by an instruction.
An example of the change:
def ADD32rr  : I<0x01, MRMDestReg, (ops GR32:$dst, GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;
=>
def ADD32rr  : I<0x01, MRMDestReg, (outs GR32:$dst), (ins GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;

llvm-svn: 40033
2007-07-19 01:14:50 +00:00
Dan Gohman
bff1054303 Define the pushq instruction for x86-64.
llvm-svn: 37625
2007-06-18 14:12:56 +00:00
Chris Lattner
307a29e831 add support for 128-bit integer add/sub
llvm-svn: 37154
2007-05-17 06:35:11 +00:00
Bill Wendling
d380bc565b Have MMX registers clobbered in x86-64 too.
llvm-svn: 36494
2007-04-26 21:06:48 +00:00
Evan Cheng
32c45fa21e Some AT&T syntax assembler (e.g. Mac OS X) does not recognize the movq alias for i64 <-> XMM moves.
llvm-svn: 32609
2006-12-15 19:58:58 +00:00
Evan Cheng
5effab79f3 f64 <-> i64 bit_convert using movq in 64-bit mode.
llvm-svn: 32587
2006-12-14 21:55:39 +00:00
Evan Cheng
4529b8cf2e Fix a couple of typo's.
llvm-svn: 32585
2006-12-14 19:46:06 +00:00
Evan Cheng
adeea85f7d - Switch X86-64 JIT to large code size model.
- Re-enable some codegen niceties for X86-64 static relocation model codegen.
- Clean ups, etc.

llvm-svn: 32238
2006-12-05 19:50:18 +00:00
Evan Cheng
2c35691a02 - Fix X86-64 JIT by temporarily disabling code that treats GV address as 32-bit
immediate in small code model. The JIT cannot ensure GV's are placed in the
lower 4G.
- Some preliminary support for large code model.

llvm-svn: 32215
2006-12-05 04:01:03 +00:00
Evan Cheng
456101ebb9 - Use a different wrapper node for RIP-relative GV, etc.
- Proper support for both small static and PIC modes under X86-64
- Some (non-optimal) support for medium modes.

llvm-svn: 32046
2006-11-30 21:55:46 +00:00
Evan Cheng
62d19fbf98 Fix JIT encoding bugs for shift / rotate by one ops.
llvm-svn: 31952
2006-11-28 01:28:00 +00:00
Evan Cheng
fc1b3d8bc8 Correct instructions for moving data between GR64 and SSE registers; also correct load i64 / store i64 from v2i64.
llvm-svn: 31795
2006-11-16 23:33:25 +00:00
Chris Lattner
7c265ad682 remove dead/redundant vars
llvm-svn: 31435
2006-11-03 23:48:56 +00:00
Evan Cheng
ca66f49574 Add properties to ComplexPattern.
llvm-svn: 30891
2006-10-11 21:03:53 +00:00
Evan Cheng
d22f3dd3ed Reflects ISD::LOAD / ISD::LOADX / LoadSDNode changes.
llvm-svn: 30844
2006-10-09 20:57:25 +00:00
Evan Cheng
cfd7b147cf X86ISD::CMP now produces a chain as well as a flag. Make that the chain
operand of a conditional branch to allow load folding into CMP / TEST
instructions.

llvm-svn: 30241
2006-09-11 02:19:56 +00:00
Evan Cheng
100e48fe40 Remove TEST64mr. It's same as TEST64rm since and is commutative.
llvm-svn: 30178
2006-09-08 06:56:55 +00:00
Evan Cheng
15dd42884e Committing X86-64 support.
llvm-svn: 30177
2006-09-08 06:48:29 +00:00