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| author | Sam Clegg <sbc@chromium.org> | 2022-12-06 16:49:13 -0800 |
|---|---|---|
| committer | Sam Clegg <sbc@chromium.org> | 2023-03-23 14:26:27 -0700 |
| commit | 3111784ff7d3d51a9e981b1a0bbc8f6511c34d25 (patch) | |
| tree | 2e82782b60fd65796c88557bf9fb1bca74c81ff9 /lld/test | |
| parent | 1c9173365a932a0d289ec86704ec645a138de03e (diff) | |
| download | llvm-3111784ff7d3d51a9e981b1a0bbc8f6511c34d25.tar.gz | |
[lld][WebAssembly] Initial support for stub libraries
See the docs in lld/docs/WebAssembly.rst for more on this.
This feature unlocks a lot of simplification in the emscripten toolchain
since we can represent the JS libraries to wasm-ld as stub libraries.
See https://github.com/emscripten-core/emscripten/issues/18875
Differential Revision: https://reviews.llvm.org/D145308
Diffstat (limited to 'lld/test')
| -rw-r--r-- | lld/test/wasm/Inputs/libstub-missing-dep.so | 2 | ||||
| -rw-r--r-- | lld/test/wasm/Inputs/libstub-missing-sym.so | 3 | ||||
| -rw-r--r-- | lld/test/wasm/Inputs/libstub.so | 5 | ||||
| -rw-r--r-- | lld/test/wasm/stub_library.s | 48 |
4 files changed, 58 insertions, 0 deletions
diff --git a/lld/test/wasm/Inputs/libstub-missing-dep.so b/lld/test/wasm/Inputs/libstub-missing-dep.so new file mode 100644 index 000000000000..f2345b766f09 --- /dev/null +++ b/lld/test/wasm/Inputs/libstub-missing-dep.so @@ -0,0 +1,2 @@ +#STUB +foo: missing_dep,missing_dep2 diff --git a/lld/test/wasm/Inputs/libstub-missing-sym.so b/lld/test/wasm/Inputs/libstub-missing-sym.so new file mode 100644 index 000000000000..2120b948511e --- /dev/null +++ b/lld/test/wasm/Inputs/libstub-missing-sym.so @@ -0,0 +1,3 @@ +#STUB +# Symbol `foo` is missing from this file which causes stub_object.s to fail +bar diff --git a/lld/test/wasm/Inputs/libstub.so b/lld/test/wasm/Inputs/libstub.so new file mode 100644 index 000000000000..57e61f632b10 --- /dev/null +++ b/lld/test/wasm/Inputs/libstub.so @@ -0,0 +1,5 @@ +#STUB +# This is a comment +foo: foodep1,foodep2 +# This symbols as no dependencies +bar diff --git a/lld/test/wasm/stub_library.s b/lld/test/wasm/stub_library.s new file mode 100644 index 000000000000..9cbf2505ea9e --- /dev/null +++ b/lld/test/wasm/stub_library.s @@ -0,0 +1,48 @@ +# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s +# RUN: wasm-ld %t.o %p/Inputs/libstub.so -o %t.wasm +# RUN: obj2yaml %t.wasm | FileCheck %s + +# When the dependencies are missing the link fails +# RUN: not wasm-ld %t.o %p/Inputs/libstub-missing-dep.so -o %t.wasm 2>&1 | FileCheck --check-prefix=MISSING-DEP %s + +# When the dependencies are missing the link fails +# RUN: not wasm-ld %t.o %p/Inputs/libstub-missing-sym.so -o %t.wasm 2>&1 | FileCheck --check-prefix=MISSING-SYM %s + +# MISSING-DEP: libstub-missing-dep.so: undefined symbol: missing_dep. Required by foo +# MISSING-DEP: libstub-missing-dep.so: undefined symbol: missing_dep2. Required by foo + +# MISSING-SYM: undefined symbol: foo + +# The function foo is defined in libstub.so but depend on foodep1 and foodep2 +.functype foo () -> () + +.globl foodep1 +foodep1: + .functype foodep1 () -> () + end_function + +.globl foodep2 +foodep2: + .functype foodep2 () -> () + end_function + +.globl _start +_start: + .functype _start () -> () + call foo + end_function + +# CHECK: - Type: EXPORT +# CHECK-NEXT: Exports: +# CHECK-NEXT: - Name: memory +# CHECK-NEXT: Kind: MEMORY +# CHECK-NEXT: Index: 0 +# CHECK-NEXT: - Name: foodep1 +# CHECK-NEXT: Kind: FUNCTION +# CHECK-NEXT: Index: 1 +# CHECK-NEXT: - Name: foodep2 +# CHECK-NEXT: Kind: FUNCTION +# CHECK-NEXT: Index: 2 +# CHECK-NEXT: - Name: _start +# CHECK-NEXT: Kind: FUNCTION +# CHECK-NEXT: Index: 3 |