Index: lib/Target/AArch64/AArch64InstrFormats.td =================================================================== --- lib/Target/AArch64/AArch64InstrFormats.td +++ lib/Target/AArch64/AArch64InstrFormats.td @@ -3282,6 +3282,10 @@ : BaseLoadStoreExclusive { bits<5> Rt; bits<5> Rn; + let Inst{20-16} = 0b11111; + let Unpredictable{20-16} = 0b11111; + let Inst{14-10} = 0b11111; + let Unpredictable{14-10} = 0b11111; let Inst{9-5} = Rn; let Inst{4-0} = Rt; Index: lib/Target/AArch64/AArch64InstrInfo.td =================================================================== --- lib/Target/AArch64/AArch64InstrInfo.td +++ lib/Target/AArch64/AArch64InstrInfo.td @@ -2314,6 +2314,20 @@ def STXPW : StoreExclusivePair<0b10, 0, 0, 1, 0, GPR32, "stxp">; def STXPX : StoreExclusivePair<0b11, 0, 0, 1, 0, GPR64, "stxp">; +let Predicates = [HasV8_1a] in { + // v8 limited-order region extension load-acquire instructions + def LDLARW : LoadAcquire <0b10, 1, 1, 0, 0, GPR32, "ldlar">; + def LDLARX : LoadAcquire <0b11, 1, 1, 0, 0, GPR64, "ldlar">; + def LDLARB : LoadAcquire <0b00, 1, 1, 0, 0, GPR32, "ldlarb">; + def LDLARH : LoadAcquire <0b01, 1, 1, 0, 0, GPR32, "ldlarh">; + + // v8 limited-order region extension store-release instructions + def STLLRW : StoreRelease <0b10, 1, 0, 0, 0, GPR32, "stllr">; + def STLLRX : StoreRelease <0b11, 1, 0, 0, 0, GPR64, "stllr">; + def STLLRB : StoreRelease <0b00, 1, 0, 0, 0, GPR32, "stllrb">; + def STLLRH : StoreRelease <0b01, 1, 0, 0, 0, GPR32, "stllrh">; +} + //===----------------------------------------------------------------------===// // Scaled floating point to integer conversion instructions. //===----------------------------------------------------------------------===// Index: lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp =================================================================== --- lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp +++ lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp @@ -1102,6 +1102,12 @@ case AArch64::STLRW: case AArch64::STLRB: case AArch64::STLRH: + case AArch64::STLLRW: + case AArch64::STLLRB: + case AArch64::STLLRH: + case AArch64::LDLARW: + case AArch64::LDLARB: + case AArch64::LDLARH: DecodeGPR32RegisterClass(Inst, Rt, Addr, Decoder); break; case AArch64::STLXRX: @@ -1112,6 +1118,8 @@ case AArch64::LDAXRX: case AArch64::LDXRX: case AArch64::STLRX: + case AArch64::LDLARX: + case AArch64::STLLRX: DecodeGPR64RegisterClass(Inst, Rt, Addr, Decoder); break; case AArch64::STLXPW: Index: lib/Target/AArch64/Utils/AArch64BaseInfo.h =================================================================== --- lib/Target/AArch64/Utils/AArch64BaseInfo.h +++ lib/Target/AArch64/Utils/AArch64BaseInfo.h @@ -1134,6 +1134,13 @@ // Privileged Access Never extension specific system registers PAN = 0xc213, // 11 000 0100 0010 011 + // Limited Ordering Regions extension system registers + LORSA_EL1 = 0xc520, // 11 000 1010 0100 000 + LOREA_EL1 = 0xc521, // 11 000 1010 0100 001 + LORN_EL1 = 0xc522, // 11 000 1010 0100 010 + LORC_EL1 = 0xc523, // 11 000 1010 0100 011 + LORID_EL1 = 0xc527, // 11 000 1010 0100 111 + // Cyclone specific system registers CPM_IOACC_CTL_EL3 = 0xff90 }; Index: lib/Target/AArch64/Utils/AArch64BaseInfo.cpp =================================================================== --- lib/Target/AArch64/Utils/AArch64BaseInfo.cpp +++ lib/Target/AArch64/Utils/AArch64BaseInfo.cpp @@ -761,6 +761,13 @@ // Privileged Access Never extension specific system registers {"pan", PAN, AArch64::FeatureV8_1a}, + + // Limited Ordering Regions extension system registers + {"lorsa_el1", LORSA_EL1, AArch64::FeatureV8_1a}, + {"lorea_el1", LOREA_EL1, AArch64::FeatureV8_1a}, + {"lorn_el1", LORN_EL1, AArch64::FeatureV8_1a}, + {"lorc_el1", LORC_EL1, AArch64::FeatureV8_1a}, + {"lorid_el1", LORID_EL1, AArch64::FeatureV8_1a}, }; uint32_t Index: test/MC/AArch64/armv8-extension-lor.s =================================================================== --- /dev/null +++ test/MC/AArch64/armv8-extension-lor.s @@ -0,0 +1,33 @@ +// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding -mattr=+v8.1a < %s | FileCheck %s + + +//------------------------------------------------------------------------------ +// Load acquire / store release +//------------------------------------------------------------------------------ + ldlarb w0,[x1] + ldlarh w0,[x1] + ldlar w0,[x1] + ldlar x0,[x1] +// CHECK: ldlarb w0, [x1] // encoding: [0x20,0x7c,0xdf,0x08] +// CHECK: ldlarh w0, [x1] // encoding: [0x20,0x7c,0xdf,0x48] +// CHECK: ldlar w0, [x1] // encoding: [0x20,0x7c,0xdf,0x88] +// CHECK: ldlar x0, [x1] // encoding: [0x20,0x7c,0xdf,0xc8] + stllrb w0,[x1] + stllrh w0,[x1] + stllr w0,[x1] + stllr x0,[x1] +// CHECK: stllrb w0, [x1] // encoding: [0x20,0x7c,0x9f,0x08] +// CHECK: stllrh w0, [x1] // encoding: [0x20,0x7c,0x9f,0x48] +// CHECK: stllr w0, [x1] // encoding: [0x20,0x7c,0x9f,0x88] +// CHECK: stllr x0, [x1] // encoding: [0x20,0x7c,0x9f,0xc8] + + msr LORSA_EL1, x0 + msr LOREA_EL1, x0 + msr LORN_EL1, x0 + msr LORC_EL1, x0 + mrs x0, LORID_EL1 +// CHECK: msr LORSA_EL1, x0 // encoding: [0x00,0xa4,0x18,0xd5] +// CHECK: msr LOREA_EL1, x0 // encoding: [0x20,0xa4,0x18,0xd5] +// CHECK: msr LORN_EL1, x0 // encoding: [0x40,0xa4,0x18,0xd5] +// CHECK: msr LORC_EL1, x0 // encoding: [0x60,0xa4,0x18,0xd5] +// CHECK: mrs x0, LORID_EL1 // encoding: [0xe0,0xa4,0x38,0xd5] Index: test/MC/Disassembler/AArch64/armv8-extension-lor.txt =================================================================== --- /dev/null +++ test/MC/Disassembler/AArch64/armv8-extension-lor.txt @@ -0,0 +1,28 @@ +# RUN: llvm-mc -triple aarch64-none-linux-gnu -mattr=+v8.1a --disassemble < %s | FileCheck %s + +0x20,0x7c,0xdf,0x08 +0x20,0x7c,0xdf,0x48 +0x20,0x7c,0xdf,0x88 +0x20,0x7c,0xdf,0xc8 +0x20,0x7c,0x9f,0x08 +0x20,0x7c,0x9f,0x48 +0x20,0x7c,0x9f,0x88 +0x20,0x7c,0x9f,0xc8 +# CHECK: ldlarb w0, [x1] +# CHECK: ldlarh w0, [x1] +# CHECK: ldlar w0, [x1] +# CHECK: ldlar x0, [x1] +# CHECK: stllrb w0, [x1] +# CHECK: stllrh w0, [x1] +# CHECK: stllr w0, [x1] +# CHECK: stllr x0, [x1] +0x00,0xa4,0x18,0xd5 +0x20,0xa4,0x18,0xd5 +0x40,0xa4,0x18,0xd5 +0x60,0xa4,0x18,0xd5 +0xe0,0xa4,0x38,0xd5 +# CHECK: msr LORSA_EL1, x0 +# CHECK: msr LOREA_EL1, x0 +# CHECK: msr LORN_EL1, x0 +# CHECK: msr LORC_EL1, x0 +# CHECK: mrs x0, LORID_EL1