From 54a1cf75d2b32cd96ec78f61af5c1bed8d81524d Mon Sep 17 00:00:00 2001 From: Tim Northover Date: Thu, 28 Feb 2013 14:46:14 +0000 Subject: AArch64: remove post-encoder method from FCMP (immediate) instructions. The work done by the post-encoder (setting architecturally unused bits to 0 as required) can be done by the existing operand that covers the "#0.0". This removes at least one use of the discouraged PostEncoderMethod uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176261 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp') diff --git a/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp b/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp index eba7666..12c1b8f 100644 --- a/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp +++ b/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp @@ -106,6 +106,11 @@ static DecodeStatus DecodeCVT32FixedPosOperand(llvm::MCInst &Inst, uint64_t Address, const void *Decoder); +static DecodeStatus DecodeFPZeroOperand(llvm::MCInst &Inst, + unsigned RmBits, + uint64_t Address, + const void *Decoder); + template static DecodeStatus DecodeMoveWideImmOperand(llvm::MCInst &Inst, unsigned FullImm, @@ -381,6 +386,17 @@ static DecodeStatus DecodeCVT32FixedPosOperand(llvm::MCInst &Inst, return MCDisassembler::Success; } +static DecodeStatus DecodeFPZeroOperand(llvm::MCInst &Inst, + unsigned RmBits, + uint64_t Address, + const void *Decoder) { + // Any bits are valid in the instruction (they're architecturally ignored), + // but a code generator should insert 0. + Inst.addOperand(MCOperand::CreateImm(0)); + return MCDisassembler::Success; +} + + template static DecodeStatus DecodeMoveWideImmOperand(llvm::MCInst &Inst, -- cgit v1.1