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-rw-r--r--lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp32
-rw-r--r--test/MC/Disassembler/neon-tests.txt4
2 files changed, 26 insertions, 10 deletions
diff --git a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp
index 0301643970..6d2d60a0db 100644
--- a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp
+++ b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp
@@ -2232,6 +2232,22 @@ static unsigned decodeN3VImm(uint32_t insn) {
return (insn >> 8) & 0xF;
}
+static bool UseDRegPair(unsigned Opcode) {
+ switch (Opcode) {
+ default:
+ return false;
+ case ARM::VLD1q8_UPD:
+ case ARM::VLD1q16_UPD:
+ case ARM::VLD1q32_UPD:
+ case ARM::VLD1q64_UPD:
+ case ARM::VST1q8_UPD:
+ case ARM::VST1q16_UPD:
+ case ARM::VST1q32_UPD:
+ case ARM::VST1q64_UPD:
+ return true;
+ }
+}
+
// VLD*
// D[d] D[d2] ... Rn [TIED_TO Rn] align [Rm]
// VLD*LN*
@@ -2305,11 +2321,9 @@ static bool DisassembleNLdSt0(MCInst &MI, unsigned Opcode, uint32_t insn,
RegClass = OpInfo[OpIdx].RegClass;
while (OpIdx < NumOps && OpInfo[OpIdx].RegClass == RegClass) {
- if (Opcode >= ARM::VST1q16 && Opcode <= ARM::VST1q8)
- MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, RegClass, Rd,
- true)));
- else
- MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, RegClass,Rd)));
+ MI.addOperand(MCOperand::CreateReg(
+ getRegisterEnum(B, RegClass, Rd,
+ UseDRegPair(Opcode))));
Rd += Inc;
++OpIdx;
}
@@ -2327,11 +2341,9 @@ static bool DisassembleNLdSt0(MCInst &MI, unsigned Opcode, uint32_t insn,
RegClass = OpInfo[0].RegClass;
while (OpIdx < NumOps && OpInfo[OpIdx].RegClass == RegClass) {
- if (Opcode >= ARM::VLD1q16 && Opcode <= ARM::VLD1q8)
- MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, RegClass, Rd,
- true)));
- else
- MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, RegClass, Rd)));
+ MI.addOperand(MCOperand::CreateReg(
+ getRegisterEnum(B, RegClass, Rd,
+ UseDRegPair(Opcode))));
Rd += Inc;
++OpIdx;
}
diff --git a/test/MC/Disassembler/neon-tests.txt b/test/MC/Disassembler/neon-tests.txt
index 64b4909092..51b31e7c1a 100644
--- a/test/MC/Disassembler/neon-tests.txt
+++ b/test/MC/Disassembler/neon-tests.txt
@@ -9,6 +9,10 @@
# CHECK: vdup.32 q3, d1[0]
0x41 0x6c 0xb4 0xf3
+# VLD1q8_UPD (with ${dst:dregpair} operand)
+# CHECK: vld1.8 {d17, d18}, [r6], r5
+0x05 0x1a 0x66 0xf4
+
# CHECK: vld4.8 {d0, d1, d2, d3}, [r2], r7
0x07 0x00 0x22 0xf4