Update call-llvm-intrinsics test for Rust 1.94.0 IR and multi-target CI
Rust 1.94 now passes constants directly to llvm.sqrt.f32 instead of
storing/loading via the stack.
- Updated the FileCheck pattern to match the new IR:
// CHECK: call float @llvm.sqrt.f32(float 4.000000e+00)
The test intent is unchanged: it still ensures the intrinsic is
emitted as a 'call' (not 'invoke').
- Removed unnecessary local variables and Drop usage to work in
`#![no_core]` mode with minicore.
- Added required crate attributes:
#![feature(no_core, lang_items)]
#![no_std]
#![no_core]
- Replaced `//@ only-riscv64` (host-based execution) with explicit
revisions for:
riscv32gc-unknown-linux-gnu
riscv64gc-unknown-linux-gnu
This ensures deterministic multi-target coverage in CI without
relying on the host architecture.
- Added `//@ needs-llvm-components: riscv` and
`//@ min-llvm-version: 21` for CI compatibility.
Signed-off-by: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com>
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