Arnaud A. de Grandmaison bdaa375556 [AArch64] Implement add/adds/sub/subs/cmp/cmn with negative immediate aliases ... This patch teaches the AsmParser to accept add/adds/sub/subs/cmp/cmn with a negative immediate operand and convert them as shown: add Rd, Rn, -imm -> sub Rd, Rn, imm sub Rd, Rn, -imm -> add Rd, Rn, imm adds Rd, Rn, -imm -> subs Rd, Rn, imm subs Rd, Rn, -imm -> adds Rd, Rn, imm cmp Rn, -imm -> cmn Rn, imm cmn Rn, -imm -> cmp Rn, imm Those instructions are an alternate syntax available to assembly coders, and are needed in order to support code already compiling with some other assemblers (gas). They are documented in the "ARMv8 Instruction Set Overview", in the "Arithmetic (immediate)" section. This makes llvm-mc a programmer-friendly assembler ! This also fixes PR20978: "Assembly handling of adding negative numbers not as smart as gas". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241166 91177308-0d34-0410-b5e6-96231b3b80d8		2015-07-01 15:05:58 +00:00
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AArch64AsmParser.cpp	[AArch64] Implement add/adds/sub/subs/cmp/cmn with negative immediate aliases	2015-07-01 15:05:58 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile