ghc-9.12.1: GHC/CmmToAsm/X86/Ppr.hs
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE ScopedTypeVariables #-}
-----------------------------------------------------------------------------
--
-- Pretty-printing assembly language
--
-- (c) The University of Glasgow 1993-2005
--
-----------------------------------------------------------------------------
module GHC.CmmToAsm.X86.Ppr (
pprNatCmmDecl,
pprInstr,
)
where
import GHC.Prelude
import GHC.Platform
import GHC.Platform.Reg
import GHC.CmmToAsm.X86.Regs
import GHC.CmmToAsm.X86.Instr
import GHC.CmmToAsm.X86.Cond
import GHC.CmmToAsm.Config
import GHC.CmmToAsm.Format
import GHC.CmmToAsm.Types
import GHC.CmmToAsm.Utils
import GHC.CmmToAsm.Ppr
import GHC.Cmm hiding (topInfoTable)
import GHC.Cmm.Dataflow.Label
import GHC.Cmm.BlockId
import GHC.Cmm.CLabel
import GHC.Cmm.DebugBlock (pprUnwindTable)
import GHC.Types.Basic (Alignment, mkAlignment, alignmentBytes)
import GHC.Types.Unique ( pprUniqueAlways )
import GHC.Utils.Outputable
import GHC.Utils.Panic
import Data.List ( intersperse )
import Data.Word
-- Note [Subsections Via Symbols]
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- If we are using the .subsections_via_symbols directive
-- (available on recent versions of Darwin),
-- we have to make sure that there is some kind of reference
-- from the entry code to a label on the _top_ of the info table,
-- so that the linker will not think it is unreferenced and dead-strip
-- it. That's why the label is called a DeadStripPreventer (_dsp).
--
-- The LLVM code gen already creates `iTableSuf` symbols, where
-- the X86 would generate the DeadStripPreventer (_dsp) symbol.
-- Therefore all that is left for llvm code gen, is to ensure
-- that all the `iTableSuf` symbols are marked as used.
-- As of this writing the documentation regarding the
-- .subsections_via_symbols and -dead_strip can be found at
-- <https://developer.apple.com/library/mac/documentation/DeveloperTools/Reference/Assembler/040-Assembler_Directives/asm_directives.html#//apple_ref/doc/uid/TP30000823-TPXREF101>
pprProcAlignment :: IsDoc doc => NCGConfig -> doc
pprProcAlignment config = maybe empty (pprAlign platform . mkAlignment) (ncgProcAlignment config)
where
platform = ncgPlatform config
pprNatCmmDecl :: IsDoc doc => NCGConfig -> NatCmmDecl (Alignment, RawCmmStatics) Instr -> doc
pprNatCmmDecl config (CmmData section dats) =
pprSectionAlign config section $$ pprDatas config dats
pprNatCmmDecl config proc@(CmmProc top_info entry_lbl _ (ListGraph blocks)) =
let platform = ncgPlatform config
top_info_table = topInfoTable proc
-- we need a label to delimit the proc code (e.g. in debug builds). When
-- we have an info table, we reuse the info table label. Otherwise we make
-- a fresh "entry" label from the label of the entry block. We can't reuse
-- the entry block label as-is, otherwise we get redundant labels:
-- delimiters for the entry block and for the whole proc are the same (see
-- #22792).
proc_lbl = case top_info_table of
Just (CmmStaticsRaw info_lbl _) -> info_lbl
Nothing -> toProcDelimiterLbl entry_lbl
-- handle subsections_via_symbols when enabled and when we have an
-- info-table to link to. See Note [Subsections Via Symbols]
(sub_via_sym_label,sub_via_sym_offset)
| platformHasSubsectionsViaSymbols platform
, Just (CmmStaticsRaw info_lbl _) <- top_info_table
, info_dsp_lbl <- pprAsmLabel platform (mkDeadStripPreventer info_lbl)
= ( line (info_dsp_lbl <> colon)
, line $ text "\t.long " <+> pprAsmLabel platform info_lbl <+> char '-' <+> info_dsp_lbl
)
| otherwise = (empty,empty)
in vcat
[ -- section directive. Requires proc_lbl when split-section is enabled to
-- use as a subsection name.
pprSectionAlign config (Section Text proc_lbl)
-- section alignment. Note that when there is an info table, we align the
-- info table and not the entry code!
, pprProcAlignment config
-- Special label when ncgExposeInternalSymbols is enabled. See Note
-- [Internal proc labels] in GHC.Cmm.Label
, pprExposedInternalProcLabel config entry_lbl
-- Subsections-via-symbols label. See Note [Subsections Via Symbols]
, sub_via_sym_label
-- We need to print a label indicating the beginning of the entry code:
-- 1. Without tables-next-to-code, we just print it here
-- 2. With tables-next-to-code, the proc_lbl is the info-table label and it
-- will be printed in pprBasicBlock after the info-table itself.
, case top_info_table of
Nothing -> pprLabel platform proc_lbl
Just _ -> empty
-- Proc's basic blocks
, vcat (map (pprBasicBlock config top_info) blocks)
-- Note that even the first block gets a label, because with branch-chain
-- elimination, it might be the target of a goto.
-- Print the proc end label when debugging is enabled
, ppWhen (ncgDwarfEnabled config) $ line (pprProcEndLabel platform proc_lbl)
-- Subsections-via-symbols offset. See Note [Subsections Via Symbols]
, sub_via_sym_offset
-- ELF .size directive (size of the entry code function)
, pprSizeDecl platform proc_lbl
]
{-# SPECIALIZE pprNatCmmDecl :: NCGConfig -> NatCmmDecl (Alignment, RawCmmStatics) Instr -> SDoc #-}
{-# SPECIALIZE pprNatCmmDecl :: NCGConfig -> NatCmmDecl (Alignment, RawCmmStatics) Instr -> HDoc #-} -- see Note [SPECIALIZE to HDoc] in GHC.Utils.Outputable
-- | Output an internal proc label. See Note [Internal proc labels] in CLabel.
pprExposedInternalProcLabel :: IsDoc doc => NCGConfig -> CLabel -> doc
pprExposedInternalProcLabel config lbl
| ncgExposeInternalSymbols config
, Just lbl' <- ppInternalProcLabel (ncgThisModule config) lbl
= line (lbl' <> colon)
| otherwise
= empty
pprProcEndLabel :: IsLine doc => Platform -> CLabel -- ^ Procedure name
-> doc
pprProcEndLabel platform lbl = pprAsmLabel platform (mkAsmTempProcEndLabel lbl) <> colon
pprBlockEndLabel :: IsLine doc => Platform -> CLabel -- ^ Block name
-> doc
pprBlockEndLabel platform lbl =
pprAsmLabel platform (mkAsmTempEndLabel lbl) <> colon
-- | Output the ELF .size directive.
pprSizeDecl :: IsDoc doc => Platform -> CLabel -> doc
pprSizeDecl platform lbl
= if osElfTarget (platformOS platform)
then line (text "\t.size" <+> pprAsmLabel platform lbl <> text ", .-" <> pprAsmLabel platform lbl)
else empty
pprBasicBlock :: IsDoc doc => NCGConfig -> LabelMap RawCmmStatics -> NatBasicBlock Instr -> doc
pprBasicBlock config info_env (BasicBlock blockid instrs)
= maybe_infotable $
pprLabel platform block_label $$
vcat (map (pprInstr platform) instrs) $$
ppWhen (ncgDwarfEnabled config) (
-- Emit both end labels since this may end up being a standalone
-- top-level block
line (pprBlockEndLabel platform block_label) $$
line (pprProcEndLabel platform block_label)
)
where
block_label = blockLbl blockid
platform = ncgPlatform config
maybe_infotable c = case mapLookup blockid info_env of
Nothing -> c
Just (CmmStaticsRaw infoLbl info) ->
pprAlignForSection platform Text $$
infoTableLoc $$
vcat (map (pprData config) info) $$
pprLabel platform infoLbl $$
c $$
ppWhen (ncgDwarfEnabled config) (line (pprBlockEndLabel platform infoLbl))
-- Make sure the info table has the right .loc for the block
-- coming right after it. See Note [Info Offset]
infoTableLoc = case instrs of
(l@LOCATION{} : _) -> pprInstr platform l
_other -> empty
pprDatas :: IsDoc doc => NCGConfig -> (Alignment, RawCmmStatics) -> doc
-- See Note [emit-time elimination of static indirections] in "GHC.Cmm.CLabel".
pprDatas config (_, CmmStaticsRaw alias [CmmStaticLit (CmmLabel lbl), CmmStaticLit ind, _, _])
| lbl == mkIndStaticInfoLabel
, let labelInd (CmmLabelOff l _) = Just l
labelInd (CmmLabel l) = Just l
labelInd _ = Nothing
, Just ind' <- labelInd ind
, alias `mayRedirectTo` ind'
= pprGloblDecl (ncgPlatform config) alias
$$ line (text ".equiv" <+> pprAsmLabel (ncgPlatform config) alias <> comma <> pprAsmLabel (ncgPlatform config) ind')
pprDatas config (align, (CmmStaticsRaw lbl dats))
= vcat (pprAlign platform align : pprLabel platform lbl : map (pprData config) dats)
where
platform = ncgPlatform config
pprData :: IsDoc doc => NCGConfig -> CmmStatic -> doc
pprData _config (CmmString str) = line (pprString str)
pprData _config (CmmFileEmbed path _) = line (pprFileEmbed path)
pprData config (CmmUninitialised bytes)
= line
$ let platform = ncgPlatform config
in if platformOS platform == OSDarwin
then text ".space " <> int bytes
else text ".skip " <> int bytes
pprData config (CmmStaticLit lit) = pprDataItem config lit
pprGloblDecl :: IsDoc doc => Platform -> CLabel -> doc
pprGloblDecl platform lbl
| not (externallyVisibleCLabel lbl) = empty
| otherwise = line (text ".globl " <> pprAsmLabel platform lbl)
pprLabelType' :: IsLine doc => Platform -> CLabel -> doc
pprLabelType' platform lbl =
if isCFunctionLabel lbl || functionOkInfoTable then
text "@function"
else
text "@object"
where
{-
NOTE: This is a bit hacky.
With the `tablesNextToCode` info tables look like this:
```
<info table data>
label_info:
<info table code>
```
So actually info table label points exactly to the code and we can mark
the label as @function. (This is required to make perf and potentially other
tools to work on Haskell binaries).
This usually works well but it can cause issues with a linker.
A linker uses different algorithms for the relocation depending on
the symbol type.For some reason, a linker will generate JUMP_SLOT relocation
when constructor info table is referenced from a data section.
This only happens with static constructor call so
we mark _con_info symbols as `@object` to avoid the issue with relocations.
@SimonMarlow hack explanation:
"The reasoning goes like this:
* The danger when we mark a symbol as `@function` is that the linker will
redirect it to point to the PLT and use a `JUMP_SLOT` relocation when
the symbol refers to something outside the current shared object.
A PLT / JUMP_SLOT reference only works for symbols that we jump to, not
for symbols representing data,, nor for info table symbol references which
we expect to point directly to the info table.
* GHC generates code that might refer to any info table symbol from the text
segment, but that's OK, because those will be explicit GOT references
generated by the code generator.
* When we refer to info tables from the data segment, it's either
* a FUN_STATIC/THUNK_STATIC local to this module
* a `con_info` that could be from anywhere
So, the only info table symbols that we might refer to from the data segment
of another shared object are `con_info` symbols, so those are the ones we
need to exclude from getting the @function treatment.
"
A good place to check for more
https://gitlab.haskell.org/ghc/ghc/wikis/commentary/position-independent-code
Another possible hack is to create an extra local function symbol for
every code-like thing to give the needed information for to the tools
but mess up with the relocation. https://phabricator.haskell.org/D4730
-}
functionOkInfoTable = platformTablesNextToCode platform &&
isInfoTableLabel lbl && not (isCmmInfoTableLabel lbl) && not (isConInfoTableLabel lbl)
pprTypeDecl :: IsDoc doc => Platform -> CLabel -> doc
pprTypeDecl platform lbl
= if osElfTarget (platformOS platform) && externallyVisibleCLabel lbl
then line (text ".type " <> pprAsmLabel platform lbl <> text ", " <> pprLabelType' platform lbl)
else empty
pprLabel :: IsDoc doc => Platform -> CLabel -> doc
pprLabel platform lbl =
pprGloblDecl platform lbl
$$ pprTypeDecl platform lbl
$$ line (pprAsmLabel platform lbl <> colon)
pprAlign :: IsDoc doc => Platform -> Alignment -> doc
pprAlign platform alignment
= line $ text ".align " <> int (alignmentOn platform)
where
bytes = alignmentBytes alignment
alignmentOn platform = if platformOS platform == OSDarwin
then log2 bytes
else bytes
log2 :: Int -> Int -- cache the common ones
log2 1 = 0
log2 2 = 1
log2 4 = 2
log2 8 = 3
log2 n = 1 + log2 (n `quot` 2)
pprReg :: forall doc. IsLine doc => Platform -> Format -> Reg -> doc
pprReg platform f r
= case r of
RegReal (RealRegSingle i) ->
if target32Bit platform then ppr32_reg_no f i
else ppr64_reg_no f i
RegVirtual (VirtualRegI u) -> text "%vI_" <> pprUniqueAlways u
RegVirtual (VirtualRegHi u) -> text "%vHi_" <> pprUniqueAlways u
RegVirtual (VirtualRegD u) -> text "%vD_" <> pprUniqueAlways u
RegVirtual (VirtualRegV128 u) -> text "%vV128_" <> pprUniqueAlways u
where
ppr32_reg_no :: Format -> Int -> doc
ppr32_reg_no II8 = ppr32_reg_byte
ppr32_reg_no II16 = ppr32_reg_word
ppr32_reg_no fmt = ppr32_reg_long fmt
ppr32_reg_byte i =
case i of {
0 -> text "%al"; 1 -> text "%bl";
2 -> text "%cl"; 3 -> text "%dl";
_ -> text "very naughty I386 byte register: " <> int i
}
ppr32_reg_word i =
case i of {
0 -> text "%ax"; 1 -> text "%bx";
2 -> text "%cx"; 3 -> text "%dx";
4 -> text "%si"; 5 -> text "%di";
6 -> text "%bp"; 7 -> text "%sp";
_ -> text "very naughty I386 word register"
}
ppr32_reg_long fmt i =
case i of {
0 -> text "%eax"; 1 -> text "%ebx";
2 -> text "%ecx"; 3 -> text "%edx";
4 -> text "%esi"; 5 -> text "%edi";
6 -> text "%ebp"; 7 -> text "%esp";
_ -> ppr_reg_float fmt i
}
ppr64_reg_no :: Format -> Int -> doc
ppr64_reg_no II8 = ppr64_reg_byte
ppr64_reg_no II16 = ppr64_reg_word
ppr64_reg_no II32 = ppr64_reg_long
ppr64_reg_no fmt = ppr64_reg_quad fmt
ppr64_reg_byte i =
case i of {
0 -> text "%al"; 1 -> text "%bl";
2 -> text "%cl"; 3 -> text "%dl";
4 -> text "%sil"; 5 -> text "%dil"; -- new 8-bit regs!
6 -> text "%bpl"; 7 -> text "%spl";
8 -> text "%r8b"; 9 -> text "%r9b";
10 -> text "%r10b"; 11 -> text "%r11b";
12 -> text "%r12b"; 13 -> text "%r13b";
14 -> text "%r14b"; 15 -> text "%r15b";
_ -> text "very naughty x86_64 byte register: " <> int i
}
ppr64_reg_word i =
case i of {
0 -> text "%ax"; 1 -> text "%bx";
2 -> text "%cx"; 3 -> text "%dx";
4 -> text "%si"; 5 -> text "%di";
6 -> text "%bp"; 7 -> text "%sp";
8 -> text "%r8w"; 9 -> text "%r9w";
10 -> text "%r10w"; 11 -> text "%r11w";
12 -> text "%r12w"; 13 -> text "%r13w";
14 -> text "%r14w"; 15 -> text "%r15w";
_ -> text "very naughty x86_64 word register"
}
ppr64_reg_long i =
case i of {
0 -> text "%eax"; 1 -> text "%ebx";
2 -> text "%ecx"; 3 -> text "%edx";
4 -> text "%esi"; 5 -> text "%edi";
6 -> text "%ebp"; 7 -> text "%esp";
8 -> text "%r8d"; 9 -> text "%r9d";
10 -> text "%r10d"; 11 -> text "%r11d";
12 -> text "%r12d"; 13 -> text "%r13d";
14 -> text "%r14d"; 15 -> text "%r15d";
_ -> text "very naughty x86_64 register"
}
ppr64_reg_quad fmt i =
case i of {
0 -> text "%rax"; 1 -> text "%rbx";
2 -> text "%rcx"; 3 -> text "%rdx";
4 -> text "%rsi"; 5 -> text "%rdi";
6 -> text "%rbp"; 7 -> text "%rsp";
8 -> text "%r8"; 9 -> text "%r9";
10 -> text "%r10"; 11 -> text "%r11";
12 -> text "%r12"; 13 -> text "%r13";
14 -> text "%r14"; 15 -> text "%r15";
_ -> ppr_reg_float fmt i
}
ppr_reg_float :: IsLine doc => Format -> Int -> doc
ppr_reg_float fmt i
| W256 <- size
= case i of
16 -> text "%ymm0" ; 17 -> text "%ymm1"
18 -> text "%ymm2" ; 19 -> text "%ymm3"
20 -> text "%ymm4" ; 21 -> text "%ymm5"
22 -> text "%ymm6" ; 23 -> text "%ymm7"
24 -> text "%ymm8" ; 25 -> text "%ymm9"
26 -> text "%ymm10"; 27 -> text "%ymm11"
28 -> text "%ymm12"; 29 -> text "%ymm13"
30 -> text "%ymm14"; 31 -> text "%ymm15"
_ -> text "very naughty x86 register"
| W512 <- size
= case i of
16 -> text "%zmm0" ; 17 -> text "%zmm1"
18 -> text "%zmm2" ; 19 -> text "%zmm3"
20 -> text "%zmm4" ; 21 -> text "%zmm5"
22 -> text "%zmm6" ; 23 -> text "%zmm7"
24 -> text "%zmm8" ; 25 -> text "%zmm9"
26 -> text "%zmm10"; 27 -> text "%zmm11"
28 -> text "%zmm12"; 29 -> text "%zmm13"
30 -> text "%zmm14"; 31 -> text "%zmm15"
_ -> text "very naughty x86 register"
| otherwise
= case i of
16 -> text "%xmm0" ; 17 -> text "%xmm1"
18 -> text "%xmm2" ; 19 -> text "%xmm3"
20 -> text "%xmm4" ; 21 -> text "%xmm5"
22 -> text "%xmm6" ; 23 -> text "%xmm7"
24 -> text "%xmm8" ; 25 -> text "%xmm9"
26 -> text "%xmm10"; 27 -> text "%xmm11"
28 -> text "%xmm12"; 29 -> text "%xmm13"
30 -> text "%xmm14"; 31 -> text "%xmm15"
_ -> text "very naughty x86 register"
where size = formatToWidth fmt
pprFormat :: IsLine doc => Format -> doc
pprFormat x = case x of
II8 -> text "b"
II16 -> text "w"
II32 -> text "l"
II64 -> text "q"
FF32 -> text "ss" -- "scalar single-precision float" (SSE2)
FF64 -> text "sd" -- "scalar double-precision float" (SSE2)
VecFormat _ FmtFloat -> text "ps"
VecFormat _ FmtDouble -> text "pd"
-- TODO: this is shady because it only works for certain instructions
VecFormat _ FmtInt8 -> text "b"
VecFormat _ FmtInt16 -> text "w"
VecFormat _ FmtInt32 -> text "l"
VecFormat _ FmtInt64 -> text "q"
pprFormat_x87 :: IsLine doc => Format -> doc
pprFormat_x87 x = case x of
FF32 -> text "s"
FF64 -> text "l"
_ -> panic "X86.Ppr.pprFormat_x87"
pprCond :: IsLine doc => Cond -> doc
pprCond c = case c of {
GEU -> text "ae"; LU -> text "b";
EQQ -> text "e"; GTT -> text "g";
GE -> text "ge"; GU -> text "a";
LTT -> text "l"; LE -> text "le";
LEU -> text "be"; NE -> text "ne";
NEG -> text "s"; POS -> text "ns";
CARRY -> text "c"; OFLO -> text "o";
PARITY -> text "p"; NOTPARITY -> text "np";
ALWAYS -> text "mp"}
pprImm :: IsLine doc => Platform -> Imm -> doc
pprImm platform = \case
ImmInt i -> int i
ImmInteger i -> integer i
ImmCLbl l -> pprAsmLabel platform l
ImmIndex l i -> pprAsmLabel platform l <> char '+' <> int i
ImmLit s -> ftext s
ImmFloat f -> float $ fromRational f
ImmDouble d -> double $ fromRational d
ImmConstantSum a b -> pprImm platform a <> char '+' <> pprImm platform b
ImmConstantDiff a b -> pprImm platform a <> char '-' <> lparen <> pprImm platform b <> rparen
pprAddr :: IsLine doc => Platform -> AddrMode -> doc
pprAddr platform (ImmAddr imm off)
= let pp_imm = pprImm platform imm
in
if (off == 0) then
pp_imm
else if (off < 0) then
pp_imm <> int off
else
pp_imm <> char '+' <> int off
pprAddr platform (AddrBaseIndex base index displacement)
= let
pp_disp = ppr_disp displacement
pp_off p = pp_disp <> char '(' <> p <> char ')'
pp_reg r = pprReg platform (archWordFormat (target32Bit platform)) r
in
case (base, index) of
(EABaseNone, EAIndexNone) -> pp_disp
(EABaseReg b, EAIndexNone) -> pp_off (pp_reg b)
(EABaseRip, EAIndexNone) -> pp_off (text "%rip")
(EABaseNone, EAIndex r i) -> pp_off (comma <> pp_reg r <> comma <> int i)
(EABaseReg b, EAIndex r i) -> pp_off (pp_reg b <> comma <> pp_reg r
<> comma <> int i)
_ -> panic "X86.Ppr.pprAddr: no match"
where
ppr_disp (ImmInt 0) = empty
ppr_disp imm = pprImm platform imm
-- | Print section header and appropriate alignment for that section.
pprSectionAlign :: IsDoc doc => NCGConfig -> Section -> doc
pprSectionAlign _config (Section (OtherSection _) _) =
panic "X86.Ppr.pprSectionAlign: unknown section"
pprSectionAlign config sec@(Section seg _) =
line (pprSectionHeader config sec) $$
pprAlignForSection (ncgPlatform config) seg
-- | Print appropriate alignment for the given section type.
pprAlignForSection :: IsDoc doc => Platform -> SectionType -> doc
pprAlignForSection platform seg = line $
text ".align " <>
case platformOS platform of
-- Darwin: alignments are given as shifts.
OSDarwin
| target32Bit platform ->
case seg of
CString -> int 1
_ -> int 2
| otherwise ->
case seg of
CString -> int 1
_ -> int 3
-- Other: alignments are given as bytes.
_
| target32Bit platform ->
case seg of
Text -> text "4,0x90"
CString -> int 1
_ -> int 4
| otherwise ->
case seg of
CString -> int 1
_ -> int 8
pprDataItem :: forall doc. IsDoc doc => NCGConfig -> CmmLit -> doc
pprDataItem config lit =
let (itemFmt, items) = itemFormatAndItems (cmmTypeFormat $ cmmLitType platform lit)
in line $ itemFmt <> hsep (punctuate comma (items lit))
where
platform = ncgPlatform config
pprLitImm, pprII64AsII32x2 :: CmmLit -> [Line doc]
pprLitImm = (:[]) . pprImm platform . litToImm
pprII64AsII32x2 (CmmInt x _)
= [ int (fromIntegral (fromIntegral x :: Word32))
, int (fromIntegral (fromIntegral (x `shiftR` 32) :: Word32)) ]
pprII64AsII32x2 x
= pprPanic "X86 pprDataItem II64" (ppr x)
itemFormatAndItems :: Format -> (Line doc, CmmLit -> [Line doc])
itemFormatAndItems = \case
II8 -> ( text "\t.byte\t", pprLitImm )
II16 -> ( text "\t.word\t", pprLitImm )
II32 -> ( text "\t.long\t", pprLitImm )
II64 ->
case platformOS platform of
OSDarwin
| target32Bit platform
-> ( text "\t.long\t", pprII64AsII32x2 )
_ -> ( text "\t.quad\t", pprLitImm )
FF32 -> ( text "\t.float\t", pprLitImm )
FF64 -> ( text "\t.double\t", pprLitImm )
VecFormat _ sFmt ->
let (fmtTxt, pprElt) = itemFormatAndItems (scalarFormatFormat sFmt)
in (fmtTxt, \ case { CmmVec elts -> pprElt =<< elts
; x -> pprPanic "X86 pprDataItem VecFormat" (ppr x)
})
asmComment :: IsLine doc => doc -> doc
asmComment c = whenPprDebug $ text "# " <> c
pprInstr :: forall doc. IsDoc doc => Platform -> Instr -> doc
pprInstr platform i = case i of
COMMENT s
-> line (asmComment (ftext s))
LOCATION file line' col _name
-> line (text "\t.loc " <> int file <+> int line' <+> int col)
DELTA d
-> line (asmComment $ text ("\tdelta = " ++ show d))
NEWBLOCK _
-> panic "pprInstr: NEWBLOCK"
UNWIND lbl d
-> line (asmComment (text "\tunwind = " <> pprUnwindTable platform d))
$$ line (pprAsmLabel platform lbl <> colon)
LDATA _ _
-> panic "pprInstr: LDATA"
{-
SPILL reg slot
-> hcat [
text "\tSPILL",
char ' ',
pprUserReg reg,
comma,
text "SLOT" <> parens (int slot)]
RELOAD slot reg
-> hcat [
text "\tRELOAD",
char ' ',
text "SLOT" <> parens (int slot),
comma,
pprUserReg reg]
-}
-- Replace 'mov $0x0,%reg' by 'xor %reg,%reg', which is smaller and cheaper.
-- The code generator catches most of these already, but not all.
MOV format (OpImm (ImmInt 0)) dst@(OpReg _)
-> pprInstr platform (XOR format' dst dst)
where format' = case format of
II64 -> II32 -- 32-bit version is equivalent, and smaller
_ -> format
MOV fmt src dst
-> pprFormatOpOp (text "mov") fmt' src dst
where
fmt' = case fmt of
VecFormat _l sFmt -> scalarFormatFormat sFmt
_ -> fmt
CMOV cc format src dst
-> pprCondOpReg (text "cmov") format cc src dst
MOVD format src dst
-> pprMovdOpOp (text "mov") format src dst
MOVZxL II32 src dst
-> pprFormatOpOp (text "mov") II32 src dst
-- 32-to-64 bit zero extension on x86_64 is accomplished by a simple
-- movl. But we represent it as a MOVZxL instruction, because
-- the reg alloc would tend to throw away a plain reg-to-reg
-- move, and we still want it to do that.
MOVZxL formats src dst
-> pprFormatOpOpCoerce (text "movz") formats II32 src dst
-- zero-extension only needs to extend to 32 bits: on x86_64,
-- the remaining zero-extension to 64 bits is automatic, and the 32-bit
-- instruction is shorter.
MOVSxL formats src dst
-> pprFormatOpOpCoerce (text "movs") formats (archWordFormat (target32Bit platform)) src dst
-- here we do some patching, since the physical registers are only set late
-- in the code generation.
LEA format (OpAddr (AddrBaseIndex (EABaseReg reg1) (EAIndex reg2 1) (ImmInt 0))) dst@(OpReg reg3)
| reg1 == reg3
-> pprFormatOpOp (text "add") format (OpReg reg2) dst
LEA format (OpAddr (AddrBaseIndex (EABaseReg reg1) (EAIndex reg2 1) (ImmInt 0))) dst@(OpReg reg3)
| reg2 == reg3
-> pprFormatOpOp (text "add") format (OpReg reg1) dst
LEA format (OpAddr (AddrBaseIndex (EABaseReg reg1) EAIndexNone displ)) dst@(OpReg reg3)
| reg1 == reg3
-> pprInstr platform (ADD format (OpImm displ) dst)
LEA format src dst
-> pprFormatOpOp (text "lea") format src dst
ADD format (OpImm (ImmInt (-1))) dst
-> pprFormatOp (text "dec") format dst
ADD format (OpImm (ImmInt 1)) dst
-> pprFormatOp (text "inc") format dst
ADD format src dst
-> pprFormatOpOp (text "add") format src dst
ADC format src dst
-> pprFormatOpOp (text "adc") format src dst
SUB format src dst
-> pprFormatOpOp (text "sub") format src dst
SBB format src dst
-> pprFormatOpOp (text "sbb") format src dst
IMUL format op1 op2
-> pprFormatOpOp (text "imul") format op1 op2
ADD_CC format src dst
-> pprFormatOpOp (text "add") format src dst
SUB_CC format src dst
-> pprFormatOpOp (text "sub") format src dst
-- Use a 32-bit instruction when possible as it saves a byte.
-- Notably, extracting the tag bits of a pointer has this form.
-- TODO: we could save a byte in a subsequent CMP instruction too,
-- but need something like a peephole pass for this
AND II64 src@(OpImm (ImmInteger mask)) dst
| 0 <= mask && mask < 0xffffffff
-> pprInstr platform (AND II32 src dst)
AND FF32 src dst
-> pprOpOp (text "andps") FF32 src dst
AND FF64 src dst
-> pprOpOp (text "andpd") FF64 src dst
AND format src dst
-> pprFormatOpOp (text "and") format src dst
OR format src dst
-> pprFormatOpOp (text "or") format src dst
XOR FF32 src dst
-> pprOpOp (text "xorps") FF32 src dst
XOR FF64 src dst
-> pprOpOp (text "xorpd") FF64 src dst
XOR format@(VecFormat _ sfmt) src dst | isIntScalarFormat sfmt
-> pprOpOp (text "pxor") format src dst
XOR format src dst
-> pprFormatOpOp (text "xor") format src dst
VXOR fmt src1 src2 dst
-> pprVxor fmt src1 src2 dst
POPCNT format src dst
-> pprOpOp (text "popcnt") format src (OpReg dst)
LZCNT format src dst
-> pprOpOp (text "lzcnt") format src (OpReg dst)
TZCNT format src dst
-> pprOpOp (text "tzcnt") format src (OpReg dst)
BSF format src dst
-> pprOpOp (text "bsf") format src (OpReg dst)
BSR format src dst
-> pprOpOp (text "bsr") format src (OpReg dst)
PDEP format src mask dst
-> pprFormatOpOpReg (text "pdep") format src mask dst
PEXT format src mask dst
-> pprFormatOpOpReg (text "pext") format src mask dst
PREFETCH NTA format src
-> pprFormatOp_ (text "prefetchnta") format src
PREFETCH Lvl0 format src
-> pprFormatOp_ (text "prefetcht0") format src
PREFETCH Lvl1 format src
-> pprFormatOp_ (text "prefetcht1") format src
PREFETCH Lvl2 format src
-> pprFormatOp_ (text "prefetcht2") format src
NOT format op
-> pprFormatOp (text "not") format op
BSWAP format op
-> pprFormatOp (text "bswap") format (OpReg op)
NEGI format op
-> pprFormatOp (text "neg") format op
SHL format src dst
-> pprShift (text "shl") format src dst
SAR format src dst
-> pprShift (text "sar") format src dst
SHR format src dst
-> pprShift (text "shr") format src dst
SHLD format src dst1 dst2
-> pprShift2 (text "shld") format src dst1 dst2
SHRD format src dst1 dst2
-> pprShift2 (text "shrd") format src dst1 dst2
BT format imm src
-> pprFormatImmOp (text "bt") format imm src
CMP format src dst
| isFloatFormat format -> pprFormatOpOp (text "ucomi") format src dst -- SSE2
| otherwise -> pprFormatOpOp (text "cmp") format src dst
TEST format src dst
-> pprFormatOpOp (text "test") format' src dst
where
-- Match instructions like 'test $0x3,%esi' or 'test $0x7,%rbx'.
-- We can replace them by equivalent, but smaller instructions
-- by reducing the size of the immediate operand as far as possible.
-- (We could handle masks larger than a single byte too,
-- but it would complicate the code considerably
-- and tag checks are by far the most common case.)
-- The mask must have the high bit clear for this smaller encoding
-- to be completely equivalent to the original; in particular so
-- that the signed comparison condition bits are the same as they
-- would be if doing a full word comparison. See #13425.
format' = case (src,dst) of
(OpImm (ImmInteger mask), OpReg dstReg)
| 0 <= mask && mask < 128 -> minSizeOfReg platform dstReg
_ -> format
minSizeOfReg platform (RegReal (RealRegSingle i))
| target32Bit platform && i <= 3 = II8 -- al, bl, cl, dl
| target32Bit platform && i <= 7 = II16 -- si, di, bp, sp
| not (target32Bit platform) && i <= 15 = II8 -- al .. r15b
minSizeOfReg _ _ = format -- other
PUSH format op
-> pprFormatOp (text "push") format op
POP format op
-> pprFormatOp (text "pop") format op
-- both unused (SDM):
-- PUSHA -> text "\tpushal"
-- POPA -> text "\tpopal"
NOP
-> line $ text "\tnop"
CLTD II8
-> line $ text "\tcbtw"
CLTD II16
-> line $ text "\tcwtd"
CLTD II32
-> line $ text "\tcltd"
CLTD II64
-> line $ text "\tcqto"
CLTD x
-> panic $ "pprInstr: CLTD " ++ show x
SETCC cond op
-> pprCondInstr (text "set") cond (pprOperand platform II8 op)
XCHG format src val
-> pprFormatOpReg (text "xchg") format src val
JXX cond blockid
-> pprCondInstr (text "j") cond (pprAsmLabel platform lab)
where lab = blockLbl blockid
JXX_GBL cond imm
-> pprCondInstr (text "j") cond (pprImm platform imm)
JMP (OpImm imm) _
-> line $ text "\tjmp " <> pprImm platform imm
JMP op _
-> line $ text "\tjmp *" <> pprOperand platform (archWordFormat (target32Bit platform)) op
JMP_TBL op _ _ _
-> pprInstr platform (JMP op [])
CALL (Left imm) _
-> line $ text "\tcall " <> pprImm platform imm
CALL (Right reg) _
-> line $ text "\tcall *" <> pprReg platform (archWordFormat (target32Bit platform)) reg
IDIV fmt op
-> pprFormatOp (text "idiv") fmt op
DIV fmt op
-> pprFormatOp (text "div") fmt op
IMUL2 fmt op
-> pprFormatOp (text "imul") fmt op
-- x86_64 only
MUL format op1 op2
-> pprFormatOpOp (text "mul") format op1 op2
MUL2 format op
-> pprFormatOp (text "mul") format op
FDIV format op1 op2
-> pprFormatOpOp (text "div") format op1 op2
FMA3 format var perm op1 op2 op3
-> let mnemo = case var of
FMAdd -> text "vfmadd"
FMSub -> text "vfmsub"
FNMAdd -> text "vfnmadd"
FNMSub -> text "vfnmsub"
in pprFormatOpRegReg (mnemo <> pprFMAPermutation perm) format op1 op2 op3
SQRT format op1 op2
-> pprFormatOpReg (text "sqrt") format op1 op2
CVTSS2SD from to
-> pprRegReg (text "cvtss2sd") from to
CVTSD2SS from to
-> pprRegReg (text "cvtsd2ss") from to
CVTTSS2SIQ fmt from to
-> pprFormatFormatOpReg (text "cvttss2si") FF32 fmt from to
CVTTSD2SIQ fmt from to
-> pprFormatFormatOpReg (text "cvttsd2si") FF64 fmt from to
CVTSI2SS fmt from to
-> pprFormatOpReg (text "cvtsi2ss") fmt from to
CVTSI2SD fmt from to
-> pprFormatOpReg (text "cvtsi2sd") fmt from to
-- FETCHGOT for PIC on ELF platforms
FETCHGOT reg
-> lines_ [ text "\tcall 1f",
hcat [ text "1:\tpopl\t", pprReg platform II32 reg ],
hcat [ text "\taddl\t$_GLOBAL_OFFSET_TABLE_+(.-1b), ",
pprReg platform II32 reg ]
]
-- FETCHPC for PIC on Darwin/x86
-- get the instruction pointer into a register
-- (Terminology note: the IP is called Program Counter on PPC,
-- and it's a good thing to use the same name on both platforms)
FETCHPC reg
-> lines_ [ text "\tcall 1f",
hcat [ text "1:\tpopl\t", pprReg platform II32 reg ]
]
-- the
-- GST fmt src addr ==> FLD dst ; FSTPsz addr
g@(X87Store fmt addr)
-> pprX87 g (hcat [gtab, text "fstp", pprFormat_x87 fmt, gsp, pprAddr platform addr])
-- Atomics
LOCK i
-> line (text "\tlock") $$ pprInstr platform i
MFENCE
-> line $ text "\tmfence"
XADD format src dst
-> pprFormatOpOp (text "xadd") format src dst
CMPXCHG format src dst
-> pprFormatOpOp (text "cmpxchg") format src dst
-- Vector Instructions
VADD format s1 s2 dst
-> pprFormatOpRegReg (text "vadd") format s1 s2 dst
VSUB format s1 s2 dst
-> pprFormatOpRegReg (text "vsub") format s1 s2 dst
VMUL format s1 s2 dst
-> pprFormatOpRegReg (text "vmul") format s1 s2 dst
VDIV format s1 s2 dst
-> pprFormatOpRegReg (text "vdiv") format s1 s2 dst
VBROADCAST format from to
-> pprBroadcast (text "vbroadcast") format from to
VMOVU format from to
-> pprFormatOpOp (text "vmovu") format from to
MOVU format from to
-> pprFormatOpOp (text "movu") format from to
MOVL format from to
-> pprFormatOpOp (text "movl") format from to
MOVH format from to
-> pprFormatOpOp (text "movh") format from to
MOVDQU format from to
-> pprOpOp (text "movdqu") format from to
VMOVDQU format from to
-> pprOpOp vmovdqu_op format from to
where
vmovdqu_op = case format of
VecFormat 8 FmtInt64 -> text "vmovdqu64"
VecFormat 16 FmtInt32 -> text "vmovdqu32"
VecFormat 32 FmtInt16 -> text "vmovdqu32" -- NB: not using vmovdqu16/8, as they
VecFormat 64 FmtInt8 -> text "vmovdqu32" -- require the additional AVX512BW extension
_ -> text "vmovdqu"
PXOR format src dst
-> pprPXor (text "pxor") format src dst
VPXOR format s1 s2 dst
-> pprXor (text "vpxor") format s1 s2 dst
VEXTRACT format offset from to
-> pprFormatImmRegOp (text "vextract") format offset from to
INSERTPS format offset addr dst
-> pprInsert (text "insertps") format offset addr dst
SHUF format offset src dst
-> pprShuf (text "shuf" <> pprFormat format) format offset src dst
VSHUF format offset src1 src2 dst
-> pprVShuf (text "vshuf" <> pprFormat format) format offset src1 src2 dst
PSHUFD format offset src dst
-> pprShuf (text "pshufd") format offset src dst
VPSHUFD format offset src dst
-> pprShuf (text "vpshufd") format offset src dst
PSLLDQ format offset dst
-> pprDoubleShift (text "pslldq") format offset dst
PSRLDQ format offset dst
-> pprDoubleShift (text "psrldq") format offset dst
MOVHLPS format from to
-> pprOpReg (text "movhlps") format (OpReg from) to
UNPCKL format src dst
-> pprFormatOpReg (text "unpckl") format src dst
PUNPCKLQDQ format from to
-> pprOpReg (text "punpcklqdq") format from to
MINMAX minMax ty fmt src dst
-> pprMinMax False minMax ty fmt [src, dst]
VMINMAX minMax ty fmt src1 src2 dst
-> pprMinMax True minMax ty fmt [src1, OpReg src2, OpReg dst]
where
gtab :: Line doc
gtab = char '\t'
gsp :: Line doc
gsp = char ' '
pprX87 :: Instr -> Line doc -> doc
pprX87 fake actual
= line (char '#' <> pprX87Instr fake) $$ line actual
pprX87Instr :: Instr -> Line doc
pprX87Instr (X87Store fmt dst) = pprFormatAddr (text "gst") fmt dst
pprX87Instr _ = panic "X86.Ppr.pprX87Instr: no match"
pprDollImm :: Imm -> Line doc
pprDollImm i = text "$" <> pprImm platform i
pprOperand :: Platform -> Format -> Operand -> Line doc
pprOperand platform f op = case op of
OpReg r -> pprReg platform f r
OpImm i -> pprDollImm i
OpAddr ea -> pprAddr platform ea
pprMnemonic_ :: Line doc -> Line doc
pprMnemonic_ name =
char '\t' <> name <> space
pprMnemonic :: Line doc -> Format -> Line doc
pprMnemonic name format =
char '\t' <> name <> pprFormat format <> space
pprGenMnemonic :: Line doc -> Format -> Line doc
pprGenMnemonic name _ =
char '\t' <> name <> text "" <> space
pprBroadcastMnemonic :: Line doc -> Format -> Line doc
pprBroadcastMnemonic name format =
char '\t' <> name <> pprBroadcastFormat format <> space
pprBroadcastFormat :: Format -> Line doc
pprBroadcastFormat (VecFormat _ f)
= case f of
FmtFloat -> text "ss"
FmtDouble -> text "sd"
FmtInt8 -> text "b"
FmtInt16 -> text "w"
FmtInt32 -> text "d"
FmtInt64 -> text "q"
pprBroadcastFormat _ = panic "Scalar Format invading vector operation"
pprFormatImmOp :: Line doc -> Format -> Imm -> Operand -> doc
pprFormatImmOp name format imm op1
= line $ hcat [
pprMnemonic name format,
char '$',
pprImm platform imm,
comma,
pprOperand platform format op1
]
pprFormatOp_ :: Line doc -> Format -> Operand -> doc
pprFormatOp_ name format op1
= line $ hcat [
pprMnemonic_ name ,
pprOperand platform format op1
]
pprFormatOp :: Line doc -> Format -> Operand -> doc
pprFormatOp name format op1
= line $ hcat [
pprMnemonic name format,
pprOperand platform format op1
]
pprFormatOpOp :: Line doc -> Format -> Operand -> Operand -> doc
pprFormatOpOp name format op1 op2
= line $ hcat [
pprMnemonic name format,
pprOperand platform format op1,
comma,
pprOperand platform format op2
]
pprMovdOpOp :: Line doc -> Format -> Operand -> Operand -> doc
pprMovdOpOp name format op1 op2
= let instr = case format of
-- bitcasts to/from a general purpose register to a floating point
-- register require II32 or II64.
II32 -> text "d"
II64 -> text "q"
FF32 -> text "d"
FF64 -> text "q"
_ -> panic "X86.Ppr.pprMovdOpOp: improper format for movd/movq."
in line $ hcat [
char '\t' <> name <> instr <> space,
pprOperand platform format op1,
comma,
pprOperand platform (movdOutFormat format) op2
]
pprFormatImmRegOp :: Line doc -> Format -> Imm -> Reg -> Operand -> doc
pprFormatImmRegOp name format off reg1 op2
= line $ hcat [
pprMnemonic name format,
pprDollImm off,
comma,
pprReg platform format reg1,
comma,
pprOperand platform format op2
]
pprFormatOpRegReg :: Line doc -> Format -> Operand -> Reg -> Reg -> doc
pprFormatOpRegReg name format op1 reg2 reg3
= line $ hcat [
pprMnemonic name format,
pprOperand platform format op1,
comma,
pprReg platform format reg2,
comma,
pprReg platform format reg3
]
pprFMAPermutation :: FMAPermutation -> Line doc
pprFMAPermutation FMA132 = text "132"
pprFMAPermutation FMA213 = text "213"
pprFMAPermutation FMA231 = text "231"
pprOpOp :: Line doc -> Format -> Operand -> Operand -> doc
pprOpOp name format op1 op2
= line $ hcat [
pprMnemonic_ name,
pprOperand platform format op1,
comma,
pprOperand platform format op2
]
pprRegReg :: Line doc -> Reg -> Reg -> doc
pprRegReg name reg1 reg2
= line $ hcat [
pprMnemonic_ name,
pprReg platform (archWordFormat (target32Bit platform)) reg1,
comma,
pprReg platform (archWordFormat (target32Bit platform)) reg2
]
pprOpReg :: Line doc -> Format -> Operand -> Reg -> doc
pprOpReg name format op reg
= line $ hcat [
pprMnemonic_ name,
pprOperand platform format op,
comma,
pprReg platform (archWordFormat (target32Bit platform)) reg
]
pprFormatOpReg :: Line doc -> Format -> Operand -> Reg -> doc
pprFormatOpReg name format op1 reg2
= line $ hcat [
pprMnemonic name format,
pprOperand platform format op1,
comma,
pprReg platform (archWordFormat (target32Bit platform)) reg2
]
pprCondOpReg :: Line doc -> Format -> Cond -> Operand -> Reg -> doc
pprCondOpReg name format cond op1 reg2
= line $ hcat [
char '\t',
name,
pprCond cond,
space,
pprOperand platform format op1,
comma,
pprReg platform format reg2
]
pprFormatFormatOpReg :: Line doc -> Format -> Format -> Operand -> Reg -> doc
pprFormatFormatOpReg name format1 format2 op1 reg2
= line $ hcat [
pprMnemonic name format2,
pprOperand platform format1 op1,
comma,
pprReg platform format2 reg2
]
pprFormatOpOpReg :: Line doc -> Format -> Operand -> Operand -> Reg -> doc
pprFormatOpOpReg name format op1 op2 reg3
= line $ hcat [
pprMnemonic name format,
pprOperand platform format op1,
comma,
pprOperand platform format op2,
comma,
pprReg platform format reg3
]
pprFormatAddr :: Line doc -> Format -> AddrMode -> Line doc
pprFormatAddr name format op
= hcat [
pprMnemonic name format,
comma,
pprAddr platform op
]
pprShift :: Line doc -> Format -> Operand -> Operand -> doc
pprShift name format src dest
= line $ hcat [
pprMnemonic name format,
pprOperand platform II8 src, -- src is 8-bit sized
comma,
pprOperand platform format dest
]
pprShift2 :: Line doc -> Format -> Operand -> Operand -> Operand -> doc
pprShift2 name format src dest1 dest2
= line $ hcat [
pprMnemonic name format,
pprOperand platform II8 src, -- src is 8-bit sized
comma,
pprOperand platform format dest1,
comma,
pprOperand platform format dest2
]
pprFormatOpOpCoerce :: Line doc -> Format -> Format -> Operand -> Operand -> doc
pprFormatOpOpCoerce name format1 format2 op1 op2
= line $ hcat [ char '\t', name, pprFormat format1, pprFormat format2, space,
pprOperand platform format1 op1,
comma,
pprOperand platform format2 op2
]
pprCondInstr :: Line doc -> Cond -> Line doc -> doc
pprCondInstr name cond arg
= line $ hcat [ char '\t', name, pprCond cond, space, arg]
-- Custom pretty printers
-- These instructions currently don't follow a uniform suffix pattern
-- in their names, so we have custom pretty printers for them.
pprBroadcast :: Line doc -> Format -> Operand -> Reg -> doc
pprBroadcast name fmt@(VecFormat _ sFmt) op dst
= line $ hcat [
pprBroadcastMnemonic name fmt,
pprOperand platform (scalarFormatFormat sFmt) op,
comma,
pprReg platform fmt dst
]
pprBroadcast _ fmt _ _ =
pprPanic "pprBroadcast: expected vector format" (ppr fmt)
pprXor :: Line doc -> Format -> Reg -> Reg -> Reg -> doc
pprXor name format reg1 reg2 reg3
= line $ hcat [
pprGenMnemonic name format,
pprReg platform format reg1,
comma,
pprReg platform format reg2,
comma,
pprReg platform format reg3
]
pprPXor :: Line doc -> Format -> Operand -> Reg -> doc
pprPXor name format src dst
= line $ hcat [
pprGenMnemonic name format,
pprOperand platform format src,
comma,
pprReg platform format dst
]
pprVxor :: Format -> Operand -> Reg -> Reg -> doc
pprVxor fmt src1 src2 dst
= line $ hcat [
pprGenMnemonic mem fmt,
pprOperand platform fmt src1,
comma,
pprReg platform fmt src2,
comma,
pprReg platform fmt dst
]
where
mem = case fmt of
FF32 -> text "vxorps"
FF64 -> text "vxorpd"
VecFormat _ FmtFloat -> text "vxorps"
VecFormat _ FmtDouble -> text "vxorpd"
_ -> pprPanic "GHC.CmmToAsm.X86.Ppr.pprVxor: element type must be Float or Double"
(ppr fmt)
pprInsert :: Line doc -> Format -> Imm -> Operand -> Reg -> doc
pprInsert name format off src dst
= line $ hcat [
pprGenMnemonic name format,
pprDollImm off,
comma,
pprOperand platform format src,
comma,
pprReg platform format dst
]
pprShuf :: Line doc -> Format -> Imm -> Operand -> Reg -> doc
pprShuf name format imm1 op2 reg3
= line $ hcat [
pprGenMnemonic name format,
pprDollImm imm1,
comma,
pprOperand platform format op2,
comma,
pprReg platform format reg3
]
pprVShuf :: Line doc -> Format -> Imm -> Operand -> Reg -> Reg -> doc
pprVShuf name format imm1 op2 reg3 reg4
= line $ hcat [
pprGenMnemonic name format,
pprDollImm imm1,
comma,
pprOperand platform format op2,
comma,
pprReg platform format reg3,
comma,
pprReg platform format reg4
]
pprDoubleShift :: Line doc -> Format -> Operand -> Reg -> doc
pprDoubleShift name format off reg
= line $ hcat [
pprGenMnemonic name format,
pprOperand platform format off,
comma,
pprReg platform format reg
]
pprMinMax :: Bool -> MinOrMax -> MinMaxType -> Format -> [Operand] -> doc
pprMinMax wantV minOrMax mmTy fmt regs
= line $ hcat ( instr : intersperse comma ( map ( pprOperand platform fmt ) regs ) )
where
instr = (if wantV then text "v" else empty)
<> (case mmTy of { IntVecMinMax {} -> text "p"; FloatMinMax -> empty })
<> (case minOrMax of { Min -> text "min"; Max -> text "max" })
<> (case mmTy of { IntVecMinMax wantSigned -> if wantSigned then text "s" else text "u"; FloatMinMax -> empty })
<> pprFormat fmt
<> space