[MC] Merge MCAsmLexer.{h,cpp} into AsmLexer.{h,cpp} (#134207)
2b11c7de4ae182496438e166cb6758d41b6e1740 introduced
`llvm/include/llvm/MC/MCAsmLexer.h` and made `AsmLexer` inherit from
`MCAsmLexer`, likely to allow target-specific parsers to depend solely
on `MCAsmLexer`. However, this separation now seems unnecessary and
confusing.
`MCAsmLexer` defines virtual functions with `AsmLexer` as its only
implementation, and `AsmLexer` itself has few extra public methods.
To simplify the codebase, this change merges MCAsmLexer.{h,cpp} into
AsmLexer.{h,cpp}. MCAsmLexer.h is temporarily kept as a forwarder.
Note: I doubt that a downstream lexer handling an assembly syntax
significantly different from the standard GNU Assembler syntax would
want to inherit from `MCAsmLexer`. Instead, it's more likely they'd
extend `AsmLexer` by adding new states and modifying its internal logic,
as seen with variables for MASM, M68k, and HLASM.
[BOLT] Handle generation of compare and jump sequences (#131949)
This patch fixes the following two issues with the createCmpJE for
AArch64:
1. Avoids overwriting the value of the input register RegNo by use XZR
as the destination register.
subs xzr, RegNo, #Imm
which is equivalent to a simple
cmp RegNo, #Imm
2. The immediate operand to the Bcc instruction must be EQ instead of
#Imm.
This patch also adds a new function for createCmpJNE and unit tests for
the both createCmpJE and createCmpJNE for X86 and AArch64.
[RISCV] Add symbol parsing support for the Xqcibi branch immediate instructions (#134233)
This patch adds support for parsing symbols in the Xqcibi branch
immediate instructions. While the 32 bit branch instructions use the
same instruction format and relocation as the existing branch
instructions in RISCV, the 48 bit ones use the `InstFormatQC_EB`
instruction format and the `R_RISCV_QC_E_BRANCH` relocation that is
defined in `BinaryFormat/ELFRelocs/RISCV_nonstandard.def.`
Vendor relocation support will be added in a later patch.
[mlir][tosa] Remove extra declarations of MulOperandsAndResultElementType in TosaOps.td (#134300)
Minor code cleanup
Signed-off-by: Jerry Ge <jerry.ge at arm.com>
