Stefan Gränitz 6a433d77b1 [llvm-jitlink] Allow optional stub-kind filter in stub_addr() expressions (#78369) ... We use `jitlink-check` lines in LIT tests as the primary tool for testing JITLink backends. Parsing and evaluation of the expressions is implemented in `RuntimeDyldChecker`. The `stub_addr(obj, name)` expression allows to obtain the linker-generated stub for the external symbol `name` in object file `obj`. This patch adds support for a filter parameter to select one out of many stubs. This is necessary for the AArch32 JITLink backend, which must be able to emit two different kinds of stubs depending on the instruction set state (Arm/Thumb) of the relocation site. Since the new parameter is optional, we don't have to update existing tests. Filters are regular expressions without brackets that match exactly one existing stub. Given object file `armv7.o` with two stubs for external function `ext` of kinds `armv7_abs_le` and `thumbv7_abs_le`, we get the following filter results e.g.: ``` stub_addr(armv7.o, ext, thumb) thumbv7_abs_le stub_addr(armv7.o, ext, thumbv7) thumbv7_abs_le stub_addr(armv7.o, ext, armv7_abs_le) armv7_abs_le stub_addr(armv7.o, ext, v7_.*_le) Error: "ext" has 2 candidate stubs in file "armv7.o". Please refine stub-kind filter "v7_.*_le" for disambiguation (encountered kinds are "thumbv7_abs_le", "armv7_abs_le"). stub_addr(armv7.o, ext, v8) Error: "ext" has 2 stubs in file "armv7.o", but none of them matches the stub-kind filter "v8" (all encountered kinds are "thumbv7_abs_le", "armv7_abs_le"). ```		2024-01-20 09:57:03 +01:00
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CMakeLists.txt
llvm-rtdyld.cpp	[llvm-jitlink] Allow optional stub-kind filter in stub_addr() expressions (#78369)	2024-01-20 09:57:03 +01:00