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58 Commits

Author SHA1 Message Date
Evan Cheng
b1f4981333 Remove target attribute break-sse-dep. Instead, do not fold load into sse partial update instructions unless optimizing for size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91910 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 17:47:23 +00:00
Evan Cheng
400073d546 On recent Intel u-arch's, folding loads into some unary SSE instructions can 
be non-optimal. To be precise, we should avoid folding loads if the instructions
only update part of the destination register, and the non-updated part is not
needed. e.g. cvtss2sd, sqrtss. Unfolding the load from these instructions breaks
the partial register dependency and it can improve performance. e.g.

movss (%rdi), %xmm0
cvtss2sd %xmm0, %xmm0

instead of
cvtss2sd (%rdi), %xmm0

An alternative method to break dependency is to clear the register first. e.g.
xorps %xmm0, %xmm0
cvtss2sd (%rdi), %xmm0


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91672 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 07:40:29 +00:00
Sean Callanan
108934c65d Instruction fixes, added instructions, and AsmString changes in the 
X86 instruction tables.

Also (while I was at it) cleaned up the X86 tables, removing tabs and
80-line violations.

This patch was reviewed by Chris Lattner, but please let me know if
there are any problems.

* X86*.td
	Removed tabs and fixed 80-line violations

* X86Instr64bit.td
	(IRET, POPCNT, BT_, LSL, SWPGS, PUSH_S, POP_S, L_S, SMSW)
		Added
	(CALL, CMOV) Added qualifiers
	(JMP) Added PC-relative jump instruction
	(POPFQ/PUSHFQ) Added qualifiers; renamed PUSHFQ to indicate
		that it is 64-bit only (ambiguous since it has no
		REX prefix)
	(MOV) Added rr form going the other way, which is encoded
		differently
	(MOV) Changed immediates to offsets, which is more correct;
		also fixed MOV64o64a to have to a 64-bit offset
	(MOV) Fixed qualifiers
	(MOV) Added debug-register and condition-register moves
	(MOVZX) Added more forms
	(ADC, SUB, SBB, AND, OR, XOR) Added reverse forms, which
		(as with MOV) are encoded differently
	(ROL) Made REX.W required
	(BT) Uncommented mr form for disassembly only
	(CVT__2__) Added several missing non-intrinsic forms
	(LXADD, XCHG) Reordered operands to make more sense for
		MRMSrcMem
	(XCHG) Added register-to-register forms
	(XADD, CMPXCHG, XCHG) Added non-locked forms
* X86InstrSSE.td
	(CVTSS2SI, COMISS, CVTTPS2DQ, CVTPS2PD, CVTPD2PS, MOVQ)
		Added
* X86InstrFPStack.td
	(COM_FST0, COMP_FST0, COM_FI, COM_FIP, FFREE, FNCLEX, FNOP,
	 FXAM, FLDL2T, FLDL2E, FLDPI, FLDLG2, FLDLN2, F2XM1, FYL2X,
	 FPTAN, FPATAN, FXTRACT, FPREM1, FDECSTP, FINCSTP, FPREM,
	 FYL2XP1, FSINCOS, FRNDINT, FSCALE, FCOMPP, FXSAVE,
	 FXRSTOR)
		Added
	(FCOM, FCOMP) Added qualifiers
	(FSTENV, FSAVE, FSTSW) Fixed opcode names
	(FNSTSW) Added implicit register operand
* X86InstrInfo.td
	(opaque512mem) Added for FXSAVE/FXRSTOR
	(offset8, offset16, offset32, offset64) Added for MOV
	(NOOPW, IRET, POPCNT, IN, BTC, BTR, BTS, LSL, INVLPG, STR,
	 LTR, PUSHFS, PUSHGS, POPFS, POPGS, LDS, LSS, LES, LFS,
	 LGS, VERR, VERW, SGDT, SIDT, SLDT, LGDT, LIDT, LLDT,
	 LODSD, OUTSB, OUTSW, OUTSD, HLT, RSM, FNINIT, CLC, STC,
	 CLI, STI, CLD, STD, CMC, CLTS, XLAT, WRMSR, RDMSR, RDPMC,
	 SMSW, LMSW, CPUID, INVD, WBINVD, INVEPT, INVVPID, VMCALL,
	 VMCLEAR, VMLAUNCH, VMRESUME, VMPTRLD, VMPTRST, VMREAD,
	 VMWRITE, VMXOFF, VMXON) Added
	(NOOPL, POPF, POPFD, PUSHF, PUSHFD) Added qualifier
	(JO, JNO, JB, JAE, JE, JNE, JBE, JA, JS, JNS, JP, JNP, JL,
	 JGE, JLE, JG, JCXZ) Added 32-bit forms
	(MOV) Changed some immediate forms to offset forms
	(MOV) Added reversed reg-reg forms, which are encoded
		differently
	(MOV) Added debug-register and condition-register moves
	(CMOV) Added qualifiers
	(AND, OR, XOR, ADC, SUB, SBB) Added reverse forms, like MOV
	(BT) Uncommented memory-register forms for disassembler
	(MOVSX, MOVZX) Added forms
	(XCHG, LXADD) Made operand order make sense for MRMSrcMem
	(XCHG) Added register-register forms
	(XADD, CMPXCHG) Added unlocked forms
* X86InstrMMX.td
	(MMX_MOVD, MMV_MOVQ) Added forms
* X86InstrInfo.cpp: Changed PUSHFQ to PUSHFQ64 to reflect table
	change

* X86RegisterInfo.td: Added debug and condition register sets
* x86-64-pic-3.ll: Fixed testcase to reflect call qualifier
* peep-test-3.ll: Fixed testcase to reflect test qualifier
* cmov.ll: Fixed testcase to reflect cmov qualifier
* loop-blocks.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-11.ll: Fixed testcase to reflect call qualifier
* 2009-11-04-SubregCoalescingBug.ll: Fixed testcase to reflect call
  qualifier
* x86-64-pic-2.ll: Fixed testcase to reflect call qualifier
* live-out-reg-info.ll: Fixed testcase to reflect test qualifier
* tail-opts.ll: Fixed testcase to reflect call qualifiers
* x86-64-pic-10.ll: Fixed testcase to reflect call qualifier
* bss-pagealigned.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-1.ll: Fixed testcase to reflect call qualifier
* widen_load-1.ll: Fixed testcase to reflect call qualifier


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91638 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:01:26 +00:00
Chris Lattner
705764110c remove a temporary hack. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82395 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-20 07:47:59 +00:00
Chris Lattner
cae05cb324 split MCInst printing out of the X86ATTInstPrinter 
class into its own X86ATTInstPrinter class.  The inst
printer now has just one dependence on the code generator
(TRI).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81703 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-13 19:30:11 +00:00
Chris Lattner
700841617a Add support for modeling whether or not the processor has support for 
conditional moves as a subtarget feature.  This is the easy part of 
PR4841.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80763 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-02 05:53:04 +00:00
Daniel Dunbar
59fc42debd llvm-mc/AsmParser: Allow target to specific a comment delimiter, which will be 
used to strip hard coded comments out of .td assembly strings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78716 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-11 20:59:47 +00:00
Daniel Dunbar
0e2771f4c4 Match X86 register names to number. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77404 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-29 00:02:19 +00:00
David Greene
3016af5a1d Add processor descriptions for Istanbul and Shanghai. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74429 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-29 16:54:06 +00:00
David Greene
343dadbb36 Add feature flags for AVX and FMA and fix some SSE4A feature flag 
initialization problems.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74350 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-26 22:46:54 +00:00
Dale Johannesen
874ae251c3 Revert 72707 and 72709, for the moment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72712 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-02 03:12:52 +00:00
Dale Johannesen
ca46fdd284 Add missing file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72709 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 23:48:58 +00:00
Stefanus Du Toit
8cf5ab153d Update CPU capabilities for AMD machines 
- added processors k8-sse3, opteron-sse3, athlon64-sse3, amdfam10, and
barcelona with appropriate sse3/4a levels
- added FeatureSSE4A for amdfam10 processors
in X86Subtarget:
- added hasSSE4A
- updated AutoDetectSubtargetFeatures to detect SSE4A
- updated GetCurrentX86CPU to detect family 15 with sse3 as k8-sse3 and
family 10h as amdfam10

New processor names match those used by gcc.

Patch by Paul Redmond!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72434 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-26 21:04:35 +00:00
Dan Gohman
f75e5b4d8c Change Feature64Bit to not imply FeatureSSE2. All x86-64 hardware has 
SSE2, however it's possible to disable SSE2, and the subtarget support
code thinks that if 64-bit implies SSE2 and SSE2 is disabled then
64-bit should also be disabled. Instead, just mark all the 64-bit
subtargets as explicitly supporting SSE2.

Also, move the code that makes -march=x86-64 enable 64-bit support by
default to only apply when there is no explicit subtarget. If you
need to specify a subtarget and you want 64-bit code, you'll need to
select a subtarget that supports 64-bit code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63575 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-03 00:04:43 +00:00
Evan Cheng
0be6d3fb2a Add Intel processors core i7 and atom. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61603 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-03 04:24:44 +00:00
Evan Cheng
ccb6976a69 Do not isel load folding bt instructions for pentium m, core, core2, and AMD processors. These are significantly slower than a load followed by a bt of a register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61557 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-02 05:35:45 +00:00
Evan Cheng
027fdbe3ba Move target independent td files from lib/Target/ to include/llvm/Target so they can be distributed along with the header files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59953 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 07:34:46 +00:00
Dale Johannesen
2194d46624 Accept -march=i586, because gcc does (a synonym 
for pentium).  Fixes
gcc.target/i386/20000720-1.c
gcc.target/i386/pr26826.c



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57528 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-14 22:06:33 +00:00
Anton Korobeynikov
ef93cecd80 Add ability to override segment (mostly for code emitter purposes). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57380 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-11 19:09:15 +00:00
Andrew Lenharth
ea7da50e5a Add lock prefix support to x86. Also add the instructions necessary for the atomic ops. They are still marked pseudo, since I cannot figure out what format to use, but they are the correct opcode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47795 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-01 13:37:02 +00:00
Dale Johannesen
b4c9a687eb nocona, core2 and penryn support 64 bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47149 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-15 01:22:41 +00:00
Nate Begeman
63ec90a6a8 SSE 4.1 Intrinsics and detection 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46681 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-03 07:18:54 +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
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
Bill Wendling
cd6cea0823 We only need to specify the most-implied feature for an architecture. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37275 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 05:15:37 +00:00
Bill Wendling
11d8fdaf6a 3DNowA implies 3DNow. 64-bit implies SSE1, SSE2, and I assume MMX. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36860 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-06 07:56:19 +00:00
Bill Wendling
4222d806fa Add an "implies" field to features. This indicates that, if the current 
feature is set, then the features in the implied list should be set also.
The opposite is also enforced: if a feature in the implied list isn't set,
then the feature that owns that implies list shouldn't be set either.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36756 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-04 20:38:40 +00:00
Bill Wendling
3f3a17dd62 Add SSSE3 as a feature of Core2. Add MMX registers to the list of registers 
clobbered by a call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36448 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-25 21:31:48 +00:00
Bill Wendling
bb1ee05253 Add support for our first SSSE3 instruction "pmulhrsw". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35869 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 22:10:25 +00:00
Chris Lattner
31c8a6d511 Add a description of the X86-64 calling convention and the return 
conventions.  This doesn't do anything yet, but may in the future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34636 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-26 18:17:14 +00:00
Evan Cheng
a26eb5e1a7 Still need to support -mcpu=<> or cross compilation will fail. Doh. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30764 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-06 09:17:41 +00:00
Evan Cheng
abc346ceda Do away with CPU feature list. Just use CPUID to detect MMX, SSE, SSE2, SSE3, and 64-bit support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30763 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-06 08:21:07 +00:00
Evan Cheng
25ab690a43 Committing X86-64 support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30177 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-08 06:48:29 +00:00
Evan Cheng
751458dac9 ImmMask should be 3 for a two-bit field; Compact X86II 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28381 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-18 06:27:15 +00:00
Evan Cheng
0f3ac8d8d4 getCalleeSaveRegs and getCalleeSaveRegClasses are no long TableGen'd. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28378 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-18 00:12:58 +00:00
Evan Cheng
c01d497255 Remove PointerType from class Target 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28368 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-17 21:20:27 +00:00
Evan Cheng
3c55c54a87 - Use xor to clear integer registers (set R, 0). 
- Added a new format for instructions where the source register is implied
  and it is same as the destination register. Used for pseudo instructions
  that clear the destination register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25872 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-01 06:13:50 +00:00
Chris Lattner
259e97cc72 * Fix 80-column violations 
* Rename hasSSE -> hasSSE1 to avoid my continual confusion with 'has any SSE'.
* Add inline asm constraint specification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25854 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-31 19:43:35 +00:00
Jeff Cohen
b8643ac476 Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25760 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-29 03:45:35 +00:00
Evan Cheng
559806f575 x86 CPU detection and proper subtarget support 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25679 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-27 08:10:46 +00:00
Chris Lattner
cedc6f4b30 PHI and INLINEASM are now built-in instructions provided by Target.td 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25674 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-27 01:46:15 +00:00
Evan Cheng
97c7fc351e Added preliminary x86 subtarget support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25645 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-26 09:53:06 +00:00
Nate Begeman
16b04f3d5e Get closer to fully working scalar FP in SSE regs. This gets singlesource 
working, and Olden/power.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22441 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-07-15 00:38:55 +00:00
Nate Begeman
f63be7d395 First round of support for doing scalar FP using the SSE2 ISA extension and 
XMM registers.  There are many known deficiencies and fixmes, which will be
addressed ASAP.  The major benefit of this work is that it will allow the
LLVM register allocator to allocate FP registers across basic blocks.

The x86 backend will still default to x87 style FP.  To enable this work,
you must pass -enable-sse-scalar-fp and either -sse2 or -sse3 to llc.

An example before and after would be for:
double foo(double *P) { double Sum = 0; int i; for (i = 0; i < 1000; ++i)
                        Sum += P[i]; return Sum; }

The inner loop looks like the following:
x87:
.LBB_foo_1:     # no_exit
        fldl (%esp)
        faddl (%eax,%ecx,8)
        fstpl (%esp)
        incl %ecx
        cmpl $1000, %ecx
        #FP_REG_KILL
        jne .LBB_foo_1  # no_exit

SSE2:
        addsd (%eax,%ecx,8), %xmm0
        incl %ecx
        cmpl $1000, %ecx
        #FP_REG_KILL
        jne .LBB_foo_1  # no_exit


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22340 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-07-06 18:59:04 +00:00
Chris Lattner
9a3e49a1b3 Add support for the -x86-asm-syntax flag, which can be used to choose between 
Intel and AT&T style assembly language.  The ultimate goal of this is to
eliminate the GasBugWorkaroundEmitter class, but for now AT&T style emission
is not fully operational.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16639 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-03 20:36:57 +00:00
Chris Lattner
c96bb817aa Remove a bunch of ad-hoc target-specific flags that were only used by the 
old asmprinter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15660 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 07:12:04 +00:00
Chris Lattner
a35ce87e2e Eliminate 3 of the X86 printImplicit* flags. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15398 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 08:23:17 +00:00
Chris Lattner
266538350a Add support for the printImplicitDefsBefore flag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12893 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-13 17:18:39 +00:00
John Criswell
4ffff9e2fa Added the llvm.readport and llvm.writeport intrinsics for x86. These do 
I/O port instructions on x86.  The specific code sequence is tailored to
the parameters and return value of the intrinsic call.
Added the ability for implicit defintions to be printed in the Instruction
Printer.
Added the ability for RawFrm instruction to print implict uses and
defintions with correct comma output.  This required adjustment to some
methods so that a leading comma would or would not be printed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12782 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-08 20:31:47 +00:00
Chris Lattner
1c54a85447 Add FP conditional move instructions, which annoyingly have special properties 
that require the asmwriter to be extended (printing implicit uses before the
explicit operands)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12574 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:02:13 +00:00