https://bugs.llvm.org/show_bug.cgi?id=41252
Bug ID: 41252
Summary: clang-cl does not support -fprofile-generate
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Driver
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
`clang-cl` supports `-fprofile-instr-generate` but not `-fprofile-generate` (or
`-fcs-profile-generate`).
There is experimental support for PGO in the Rust compiler based on IR-level
instrumentation. In order to be able to use it in a mixed Rust/C codebase, C
code also has to be instrumented via the IR-level method. This works for
regular `clang` but `clang-cl` does not seem to expose this functionality.
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