aeba2250a5
Re-enable x86 tail call optimization.
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llvm-svn: 95295
2010-02-04 06:47:24 +00:00
9976832a05
Indirect tail call has to go through a call preserved register since it's after callee register pops. X86 isel lowering is using EAX / R11 and it was somehow adding that to function live out. That prevented the real function return register from being added to the function live out list and bad things happen.
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This fixes 483.xalancbmk (with tail call opt).
llvm-svn: 95280
2010-02-04 02:40:39 +00:00
c337d6538a
Rewrite FP constant handling in DEBUG_VALUE yet
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again, so it more or less handles long double.
Restore \n removed in latest MC frenzy.
llvm-svn: 95271
2010-02-04 01:33:43 +00:00
223084d3ac
enhance new encoder to support prefixes + RawFrm
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instructions with no operands. It can now handle
define void @test2() nounwind { ret void }
llvm-svn: 95261
2010-02-03 21:57:59 +00:00
6794f9b9f6
set up some infrastructure, some minor cleanups.
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llvm-svn: 95260
2010-02-03 21:43:43 +00:00
f4139067ee
Speculatively disable x86 automatic tail call optimization while we track down a self-hosting issue.
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llvm-svn: 95259
2010-02-03 21:40:40 +00:00
f914be06d2
stub out a new X86 encoder, which can be tried with
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-enable-new-x86-encoder until its stable.
llvm-svn: 95256
2010-02-03 21:24:49 +00:00
2f750f3b5a
rename createX86MCCodeEmitter to more accurately reflect what it creates.
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llvm-svn: 95254
2010-02-03 21:14:33 +00:00
00f1e6c030
Added support for X86 instruction prefixes so llvm-mc can assemble them. The
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Lock prefix, Repeat string operation prefixes and the Segment override prefixes.
Also added versions of the move string and store string instructions without the
repeat prefixes to X86InstrInfo.td. And finally marked the rep versions of
move/store string records in X86InstrInfo.td as isCodeGenOnly = 1 so tblgen is
happy building the disassembler files.
llvm-svn: 95252
2010-02-03 21:04:42 +00:00
3bcbdb8a28
reapply r95206, this time actually delete the code I'm replacing in the third stub case.
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llvm-svn: 95209
2010-02-03 06:42:38 +00:00
37fad99a05
revert r95206, it is apparently causing bootstrap failure on i386-darwin9
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llvm-svn: 95208
2010-02-03 06:41:18 +00:00
3eef965b06
make the x86 backend emit darwin stubs through mcstreamer
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instead of textually.
llvm-svn: 95206
2010-02-03 06:21:16 +00:00
082f484074
make MachineModuleInfoMachO hold non-const MCSymbol*'s instead
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of const ones. non-const ones aren't very useful, because you can't
even, say, emit them.
llvm-svn: 95205
2010-02-03 06:18:30 +00:00
40905b4302
Allow all types of callee's to be tail called. But avoid automatic tailcall if the callee is a result of bitcast to avoid losing necessary zext / sext etc.
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llvm-svn: 95195
2010-02-03 03:28:02 +00:00
0b78cc2af5
don't emit \n's at the start of X86AsmPrinter::runOnMachineFunction,
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.o files don't like that.
llvm-svn: 95187
2010-02-03 01:49:49 +00:00
183ef68ef7
Finally eliminate printMCInst and send instructions through
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the streamer. Demo:
$ cat t.ll
define i32 @test() nounwind {
ret i32 42
}
$ llc t.ll -o -
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_test:
movl $42, %eax
ret
$ llc t.ll -o t.o -filetype=obj
$ otool -tv t.o
t.o:
(__TEXT,__text) section
_test:
00000000 movl $0x0000002a,%eax
00000005 ret
llvm-svn: 95179
2010-02-03 01:13:25 +00:00
996ec840d0
rejigger the world so that EmitInstruction prints the \n at
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the end of the instruction instead of expecting the caller to
do it. This currently causes the asm-verbose instruction
comments to be on the next line.
llvm-svn: 95178
2010-02-03 01:09:55 +00:00
41ad1905c9
sink handling of target-independent machine instrs (other
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than DEBUG_VALUE :( ) into the target indep AsmPrinter.cpp
file. This allows elimination of the
NO_ASM_WRITER_BOILERPLATE hack among other things.
llvm-svn: 95177
2010-02-03 01:00:52 +00:00
55e768c99a
Print FPImm a less kludgy way; APFloat.toString seems
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to have some problems anyway.
llvm-svn: 95171
2010-02-03 00:36:40 +00:00
5f238a9650
ByVal frame object size should be that of the byval argument, not the size of the type which is just a pointer. This is not known to break stuff but is wrong nevertheless.
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llvm-svn: 95163
2010-02-02 23:58:13 +00:00
6f36a083ef
Revert 95130.
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llvm-svn: 95160
2010-02-02 23:55:14 +00:00
b3cfc2b77c
Accept floating point immediates in DEBUG_VALUE.
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llvm-svn: 95159
2010-02-02 23:54:23 +00:00
bdbffbedf0
AsmParser/X86: Add temporary hack to allow parsing "sal". Eventually we need
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some mechanism for specifying alternative syntaxes, but I'm not sure what form
that should take yet.
llvm-svn: 95158
2010-02-02 23:46:47 +00:00
b0d44c3807
refactor code so that LLVMTargetMachine creates the asmstreamer and
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mccontext instead of having AsmPrinter do it. This allows other
types of MCStreamer's to be passed in.
llvm-svn: 95155
2010-02-02 23:37:42 +00:00
6a6137832d
remove dead code.
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llvm-svn: 95144
2010-02-02 22:03:00 +00:00
3184f22447
MCAsmParser/X86: Represent absolute memory operands as CodeGen does, with scale
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== 1.
llvm-svn: 95137
2010-02-02 21:44:16 +00:00
d28d6db735
MCCodeEmitter/X86: Handle tied registers better when converting MCInst ->
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MCMachineInstr. This also fixes handling of tied registers for MRMSrcMem
instructions.
llvm-svn: 95136
2010-02-02 21:44:10 +00:00
0cd6c2a047
eliminate all the dead addSimpleCodeEmitter implementations.
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eliminate random "code emitter" stuff in Alpha, except for
the JIT path. Next up, remove the template cruft.
llvm-svn: 95131
2010-02-02 21:31:47 +00:00
c1b0116ff1
Pass callsite return type to TargetLowering::LowerCall and use that to check sibcall eligibility.
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llvm-svn: 95130
2010-02-02 21:29:10 +00:00
55afd2564c
Perform sibcall in some cases when arguments are passes memory. Look for cases
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where callee's arguments are already in the caller's own caller's stack and
they line up perfectly. e.g.
extern int foo(int a, int b, int c);
int bar(int a, int b, int c) {
return foo(a, b, c);
}
llvm-svn: 95053
2010-02-02 02:22:50 +00:00
a49d8e6d38
Fix PR6196. GV callee may not be a function.
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llvm-svn: 95017
2010-02-01 22:40:09 +00:00
ed8ca56eeb
Undo r94946 now all the tests are passing again.
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llvm-svn: 94970
2010-02-01 02:13:39 +00:00
b33dbc5019
Change TAILJMP's to be varargs and transfer implicit uses over from TCRETURN's. Otherwise the missing uses can make post-regalloc scheduling do bad things. This fixes 403.gcc.
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llvm-svn: 94950
2010-01-31 07:28:44 +00:00
9adc6f46cf
Fix a missing check from my last commit.
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llvm-svn: 94949
2010-01-31 07:27:31 +00:00
7f62def0f9
Avoid recursive sibcall's.
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llvm-svn: 94946
2010-01-31 06:44:49 +00:00
9aeccadce4
Moved InstallLexer() from the X86-specific AsmLexer
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to the TargetAsmLexer class so that clients can
actually use the TargetAsmLexer they get from a
Target.
llvm-svn: 94940
2010-01-31 02:28:18 +00:00
70f714fdbe
Allow more tailcall optimization: calls with inputs that are all passed in registers.
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llvm-svn: 94873
2010-01-30 01:22:00 +00:00
2d5a75b42a
Don't forget to transfer target flag when inserting a tailcall instruction.
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llvm-svn: 94872
2010-01-30 01:16:15 +00:00
76e5d70c57
MC/X86 AsmParser: Handle absolute memory operands correctly. We were doing
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something totally broken and parsing them as immediates, but the .td file also
had the wrong match class so things sortof worked. Except, that is, that we
would parse
movl $0, %eax
as
movl 0, %eax
Feel free to guess how well that worked.
llvm-svn: 94869
2010-01-30 01:02:48 +00:00
f05d00787a
X86.td: Refactor to bring operands that use print_pcrel_imm together.
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llvm-svn: 94861
2010-01-30 00:24:12 +00:00
a97adee959
AsmMatcher/X86: Separate out sublass for memory operands that have no segment
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register, and use to cleanup a FIXME in X86AsmParser.cpp.
llvm-svn: 94859
2010-01-30 00:24:00 +00:00
ad00f03e86
Add assertion to humor the paranoid.
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llvm-svn: 94843
2010-01-29 21:21:28 +00:00
297a494f55
Catch more trivial tail call opportunities: no inputs and output types match.
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llvm-svn: 94804
2010-01-29 06:45:59 +00:00
82436d1666
Added a custom TableGen backend to support the
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enhanced disassembler, and the necessary makefile
rules to build the table for X86.
llvm-svn: 94764
2010-01-29 00:21:04 +00:00
346af88396
Fix a bug introduced by r94490 where it created a X86ISD::CMP whose output type is different from its inputs.
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This fixes PR6146.
llvm-svn: 94731
2010-01-28 01:57:22 +00:00
94a946cac4
Remove the argument from EmitJumpTableInfo, because it doesn't need it.
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Move the X86 implementation of function body emission up to
AsmPrinter::EmitFunctionBody, which works by calling the virtual
EmitInstruction method.
llvm-svn: 94716
2010-01-28 01:02:27 +00:00
77b108e17b
Treat MO_REG 0 location as undefined in DEBUG_VALUE,
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per document.
llvm-svn: 94693
2010-01-27 22:11:16 +00:00
091217be6f
Kill ModuleProvider and ghost linkage by inverting the relationship between
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Modules and ModuleProviders. Because the "ModuleProvider" simply materializes
GlobalValues now, and doesn't provide modules, it's renamed to
"GVMaterializer". Code that used to need a ModuleProvider to materialize
Functions can now materialize the Functions directly. Functions no longer use a
magic linkage to record that they're materializable; they simply ask the
GVMaterializer.
Because the C ABI must never change, we can't remove LLVMModuleProviderRef or
the functions that refer to it. Instead, because Module now exposes the same
functionality ModuleProvider used to, we store a Module* in any
LLVMModuleProviderRef and translate in the wrapper methods. The bindings to
other languages still use the ModuleProvider concept. It would probably be
worth some time to update them to follow the C++ more closely, but I don't
intend to do it.
Fixes http://llvm.org/PR5737 and http://llvm.org/PR5735 .
llvm-svn: 94686
2010-01-27 20:34:15 +00:00
85476f304c
Perform trivial tail call optimization for callees with "C" ABI. These are done
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even when -tailcallopt is not specified and it does not require changing ABI.
First case is the most trivial one. Perform tail call optimization when both
the caller and callee do not return values and when the callee does not take
any input arguments.
llvm-svn: 94664
2010-01-27 06:25:16 +00:00
67a69dd2ed
Eliminate target hook IsEligibleForTailCallOptimization.
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Target independent isel should always pass along the "tail call" property. Change
target hook LowerCall's parameter "isTailCall" into a refernce. If the target
decides it's impossible to honor the tail call request, it should set isTailCall
to false to make target independent isel happy.
llvm-svn: 94626
2010-01-27 00:07:07 +00:00
Evan Cheng