[lld] wasm-ld: Add allow-multiple-definition flag (PR #97699)

[Sam Clegg via llvm-commits]

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@@ -0,0 +1,39 @@
+# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %s -o %t1
+# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %p/Inputs/allow-multiple-definition.s -o %t2
+# RUN: llvm-objdump --no-print-imm-hex -d %t1 | FileCheck --check-prefix=DEF1 %s
+# RUN: llvm-objdump --no-print-imm-hex -d %t2 | FileCheck --check-prefix=DEF2 %s
+# RUN: not wasm-ld -o %t.wasm %t1 %t2 2>&1 | FileCheck --check-prefix=DUP1 %s
+# RUN: not wasm-ld -o %t.wasm %t2 %t1 2>&1 | FileCheck --check-prefix=DUP2 %s
+# RUN: wasm-ld --allow-multiple-definition %t1 %t2 -o %t3
+# RUN: llvm-objdump --no-print-imm-hex -d %t3 | FileCheck --check-prefix=RES12 %s
+# RUN: wasm-ld --allow-multiple-definition %t2 %t1 -o %t4
+# RUN: llvm-objdump --no-print-imm-hex -d %t4 | FileCheck --check-prefix=RES21 %s
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sbc100 wrote:

Did you base this test on lld/test/ELF/allow-multiple-definition.s?  If not maybe we should?

https://github.com/llvm/llvm-project/pull/97699