[PATCH 3/3] R600/SI: Remove isDS InstrMapping, use TSFlags instead

[Matt Arsenault]

> On Nov 28, 2014, at 8:07 AM, Marek Olšák <maraeo at gmail.com> wrote:
> 
> From: Marek Olšák <marek.olsak at amd.com>
> 
> InstrMapping was causing TableGen crashes with multi classes.


Actually I posted a patch which does exactly this (plus some other cleanups) here:

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141124/246167.html <http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141124/246167.html> in 0002-R600-SI-Various-instruction-format-bit-test-cleanups.patch



> ---
> lib/Target/R600/SIDefines.h       |  3 ++-
> lib/Target/R600/SIInstrFormats.td |  3 +++
> lib/Target/R600/SIInstrInfo.cpp   | 10 +---------
> lib/Target/R600/SIInstrInfo.td    |  8 --------
> 4 files changed, 6 insertions(+), 18 deletions(-)
> 
> diff --git a/lib/Target/R600/SIDefines.h b/lib/Target/R600/SIDefines.h
> index 2e7dab6..36285c7 100644
> --- a/lib/Target/R600/SIDefines.h
> +++ b/lib/Target/R600/SIDefines.h
> @@ -23,7 +23,8 @@ enum {
>   SALU = 1 << 9,
>   MUBUF = 1 << 10,
>   MTBUF = 1 << 11,
> -  FLAT = 1 << 12
> +  FLAT = 1 << 12,
> +  DS = 1 << 13
> };
> }
> 
> diff --git a/lib/Target/R600/SIInstrFormats.td b/lib/Target/R600/SIInstrFormats.td
> index 0fbce35..0f95518 100644
> --- a/lib/Target/R600/SIInstrFormats.td
> +++ b/lib/Target/R600/SIInstrFormats.td
> @@ -27,6 +27,7 @@ class InstSI <dag outs, dag ins, string asm, list<dag> pattern> :
>   field bits<1> MUBUF = 0;
>   field bits<1> MTBUF = 0;
>   field bits<1> FLAT = 0;
> +  field bits<1> DS = 0;
> 
>   // These need to be kept in sync with the enum in SIInstrFlags.
>   let TSFlags{0} = VM_CNT;
> @@ -42,6 +43,7 @@ class InstSI <dag outs, dag ins, string asm, list<dag> pattern> :
>   let TSFlags{10} = MUBUF;
>   let TSFlags{11} = MTBUF;
>   let TSFlags{12} = FLAT;
> +  let TSFlags{13} = DS;
> 
>   // Most instructions require adjustments after selection to satisfy
>   // operand requirements.
> @@ -544,6 +546,7 @@ let Uses = [EXEC] in {
> class DS <bits<8> op, dag outs, dag ins, string asm, list<dag> pattern> :
>     InstSI <outs, ins, asm, pattern> , DSe<op> {
> 
> +  let DS = 1;
>   let LGKM_CNT = 1;
>   let UseNamedOperandTable = 1;
>   let DisableEncoding = "$m0";
> diff --git a/lib/Target/R600/SIInstrInfo.cpp b/lib/Target/R600/SIInstrInfo.cpp
> index 1a0010c..f71c580 100644
> --- a/lib/Target/R600/SIInstrInfo.cpp
> +++ b/lib/Target/R600/SIInstrInfo.cpp
> @@ -895,16 +895,8 @@ bool SIInstrInfo::areMemAccessesTriviallyDisjoint(MachineInstr *MIa,
>   return false;
> }
> 
> -namespace llvm {
> -namespace AMDGPU {
> -// Helper function generated by tablegen.  We are wrapping this with
> -// an SIInstrInfo function that returns bool rather than int.
> -int isDS(uint16_t Opcode);
> -}
> -}
> -
> bool SIInstrInfo::isDS(uint16_t Opcode) const {
> -  return ::AMDGPU::isDS(Opcode) != -1;
> +  return get(Opcode).TSFlags & SIInstrFlags::DS;
> }
> 
> bool SIInstrInfo::isMIMG(uint16_t Opcode) const {
> diff --git a/lib/Target/R600/SIInstrInfo.td b/lib/Target/R600/SIInstrInfo.td
> index 392c272..cdbc22e 100644
> --- a/lib/Target/R600/SIInstrInfo.td
> +++ b/lib/Target/R600/SIInstrInfo.td
> @@ -1497,14 +1497,6 @@ def getCommuteOrig : InstrMapping {
>   let ValueCols = [["1"]];
> }
> 
> -def isDS : InstrMapping {
> -  let FilterClass = "DS";
> -  let RowFields = ["Inst"];
> -  let ColFields = ["Size"];
> -  let KeyCol = ["8"];
> -  let ValueCols = [["8"]];
> -}
> -
> def getMCOpcode : InstrMapping {
>   let FilterClass = "SIMCInstr";
>   let RowFields = ["PseudoInstr"];
> -- 
> 2.1.0
> 
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