The top-level llvm-profgen lit configuration previously disabled the
entire test directory unless the X86 target was registered. As a result,
target-independent tests and tests for ARM and AArch64 also implicitly
depended on X86.
Split target-specific tests and inputs into X86, ARM, and AArch64
directories with per-directory lit.local.cfg files. Leave help.test at
the top level because it is target-independent. Existing X86 tests
remain guarded by X86 and run as before, while ARM and AArch64 tests no
longer require the X86 target. The X86 non-ARM ETM rejection case also
no longer requires the ARM target; it only requires X86 and OpenCSD.
Split the former etm-arch.test into ARM/etm-arch.test, containing the
two ARM-specific checks, and X86/etm-non-arm.test, containing the
existing X86 rejection check. The tested inputs and expected diagnostics
are preserved.
Update match-blocks-with-pseudo-probes-inline.test,
pseudoprobe-decoding-inline.test, and pseudoprobe-decoding-noinline.test
in BOLT to refer to the relocated X86 inputs. All other llvm-profgen
tests and inputs are pure renames.
This does not change llvm-profgen runtime behavior; it only removes
unnecessary cross-target dependencies from its test suite.
This is a preparatory change for extending llvm-profgen profiling
support to AArch64 and for introducing the universal profile-guided
automatic software loop data prefetcher described in the RFC:
https://discourse.llvm.org/t/rfc-universal-profile-guided-automatic-software-loop-data-prefetcher-for-llvm/90916
Sergey Shcherbinin
3f80df8698