Henrich Lauko f26b30ea35
[CIR] Auto-generate matchAndRewrite for one-to-one CIR-to-LLVM lowerings (#190326)
When a CIR op specifies a non-empty `llvmOp` field, the lowering
emitter now generates the `matchAndRewrite` body that converts the
result type and forwards all operands to the corresponding LLVM op.
This removes 27 boilerplate lowering patterns from LowerToLLVM.cpp.

Ops needing custom logic (FMaxNumOp/FMinNumOp for FastmathFlags::nsz)
override `llvmOp = ""` to retain hand-written implementations.

Also fixes llvmOp names (TruncOp -> FTruncOp, FloorOp -> FFloorOp)
and adds a diagnostic rejecting conflicting llvmOp + custom constructor.
2026-04-03 19:29:03 +02:00
..

C language Family Front-end

Welcome to Clang.

This is a compiler front-end for the C family of languages (C, C++ and Objective-C) which is built as part of the LLVM compiler infrastructure project.

Unlike many other compiler frontends, Clang is useful for a number of things beyond just compiling code: we intend for Clang to be host to a number of different source-level tools. One example of this is the Clang Static Analyzer.

If you're interested in more (including how to build Clang) it is best to read the relevant websites. Here are some pointers: