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[mips][mips64r6] madd.[ds], msub.[ds], nmadd.[ds], and nmsub.[ds] are not available on MIPS32r6/MIPS64r6

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Summary:
This patch updates both the assembler and the code generator.

MIPS32r6/MIPS64r6 replaces them with maddf.[ds] and msubf.[ds] which are fused
multiply-add/sub operations. We don't emit these yet, this patch only prevents the removed instructions from being emitted.

Depends on D3955

Reviewers: jkolek, zoran.jovanovic, vmedic

Reviewed By: vmedic

Differential Revision: http://reviews.llvm.org/D3956

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210763 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Sanders
2014-06-12 11:04:18 +00:00
parent d94bc707c4
commit a61aa38ee1
5 changed files with 322 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
lib/Target/Mips/Mips32r6InstrInfo.td
View File

@ -35,7 +35,6 @@ include "Mips32r6InstrFormats.td"
// Removed: ldxc1
// Removed: luxc1
// Removed: lwxc1
// Removed: madd.[ds], nmadd.[ds], nmsub.[ds], sub.[ds]
// Removed: movf, movt
// Removed: movf.fmt, movt.fmt, movn.fmt, movz.fmt
// Removed: movn, movz

24
lib/Target/Mips/MipsInstrFPU.td
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@ -457,42 +457,42 @@ def FSUB_S : MMRel, ADDS_FT<"sub.s", FGR32Opnd, II_SUB_S, 0, fsub>,
defm FSUB : ADDS_M<"sub.d", II_SUB_D, 0, fsub>, ADDS_FM<0x01, 17>;
def MADD_S : MMRel, MADDS_FT<"madd.s", FGR32Opnd, II_MADD_S, fadd>,
MADDS_FM<4, 0>, ISA_MIPS32R2;
MADDS_FM<4, 0>, ISA_MIPS32R2_NOT_32R6_64R6;
def MSUB_S : MMRel, MADDS_FT<"msub.s", FGR32Opnd, II_MSUB_S, fsub>,
MADDS_FM<5, 0>, ISA_MIPS32R2;
MADDS_FM<5, 0>, ISA_MIPS32R2_NOT_32R6_64R6;
let AdditionalPredicates = [NoNaNsFPMath] in {
def NMADD_S : MMRel, NMADDS_FT<"nmadd.s", FGR32Opnd, II_NMADD_S, fadd>,
MADDS_FM<6, 0>, ISA_MIPS32R2;
MADDS_FM<6, 0>, ISA_MIPS32R2_NOT_32R6_64R6;
def NMSUB_S : MMRel, NMADDS_FT<"nmsub.s", FGR32Opnd, II_NMSUB_S, fsub>,
MADDS_FM<7, 0>, ISA_MIPS32R2;
MADDS_FM<7, 0>, ISA_MIPS32R2_NOT_32R6_64R6;
}
def MADD_D32 : MMRel, MADDS_FT<"madd.d", AFGR64Opnd, II_MADD_D, fadd>,
MADDS_FM<4, 1>, ISA_MIPS32R2, FGR_32;
MADDS_FM<4, 1>, ISA_MIPS32R2_NOT_32R6_64R6, FGR_32;
def MSUB_D32 : MMRel, MADDS_FT<"msub.d", AFGR64Opnd, II_MSUB_D, fsub>,
MADDS_FM<5, 1>, ISA_MIPS32R2, FGR_32;
MADDS_FM<5, 1>, ISA_MIPS32R2_NOT_32R6_64R6, FGR_32;
let AdditionalPredicates = [NoNaNsFPMath] in {
def NMADD_D32 : MMRel, NMADDS_FT<"nmadd.d", AFGR64Opnd, II_NMADD_D, fadd>,
MADDS_FM<6, 1>, ISA_MIPS32R2, FGR_32;
MADDS_FM<6, 1>, ISA_MIPS32R2_NOT_32R6_64R6, FGR_32;
def NMSUB_D32 : MMRel, NMADDS_FT<"nmsub.d", AFGR64Opnd, II_NMSUB_D, fsub>,
MADDS_FM<7, 1>, ISA_MIPS32R2, FGR_32;
MADDS_FM<7, 1>, ISA_MIPS32R2_NOT_32R6_64R6, FGR_32;
}
let isCodeGenOnly=1 in {
def MADD_D64 : MADDS_FT<"madd.d", FGR64Opnd, II_MADD_D, fadd>,
MADDS_FM<4, 1>, ISA_MIPS32R2, FGR_64;
MADDS_FM<4, 1>, ISA_MIPS32R2_NOT_32R6_64R6, FGR_64;
def MSUB_D64 : MADDS_FT<"msub.d", FGR64Opnd, II_MSUB_D, fsub>,
MADDS_FM<5, 1>, ISA_MIPS32R2, FGR_64;
MADDS_FM<5, 1>, ISA_MIPS32R2_NOT_32R6_64R6, FGR_64;
}
let AdditionalPredicates = [NoNaNsFPMath],
isCodeGenOnly=1 in {
def NMADD_D64 : NMADDS_FT<"nmadd.d", FGR64Opnd, II_NMADD_D, fadd>,
MADDS_FM<6, 1>, ISA_MIPS32R2, FGR_64;
MADDS_FM<6, 1>, ISA_MIPS32R2_NOT_32R6_64R6, FGR_64;
def NMSUB_D64 : NMADDS_FT<"nmsub.d", FGR64Opnd, II_NMSUB_D, fsub>,
MADDS_FM<7, 1>, ISA_MIPS32R2, FGR_64;
MADDS_FM<7, 1>, ISA_MIPS32R2_NOT_32R6_64R6, FGR_64;
}
//===----------------------------------------------------------------------===//

3
lib/Target/Mips/MipsInstrInfo.td
View File

@ -236,6 +236,9 @@ class ISA_MIPS32_NOT_32R6_64R6 {
list<Predicate> InsnPredicates = [HasMips32, NotMips32r6, NotMips64r6];
}
class ISA_MIPS32R2 { list<Predicate> InsnPredicates = [HasMips32r2]; }
class ISA_MIPS32R2_NOT_32R6_64R6 {
list<Predicate> InsnPredicates = [HasMips32r2, NotMips32r6, NotMips64r6];
}
class ISA_MIPS64 { list<Predicate> InsnPredicates = [HasMips64]; }
class ISA_MIPS64R2 { list<Predicate> InsnPredicates = [HasMips64r2]; }
class ISA_MIPS32R6 { list<Predicate> InsnPredicates = [HasMips32r6]; }