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272b8f5b73
Add a flag to lib/Linker (and `llvm-link`) to override linkage rules. When set, the functions in the source module *always* replace those in the destination module. The `llvm-link` option is `-override=abc.ll`. All the "regular" modules are loaded and linked first, followed by the `-override` modules. This is useful for debugging workflows where some subset of the module (e.g., a single function) is extracted into a separate file where it's optimized differently, before being merged back in. Patch by Luqman Aden! llvm-svn: 235473
20 lines
478 B
LLVM
20 lines
478 B
LLVM
; RUN: llvm-link %s -override %S/Inputs/override-different-linkage.ll -S | FileCheck %s
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; RUN: llvm-link -override %S/Inputs/override-different-linkage.ll %s -S | FileCheck %s
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; CHECK-LABEL: define linkonce i32 @foo
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret i32 4
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define weak i32 @foo(i32 %i) {
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entry:
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%add = add nsw i32 %i, %i
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ret i32 %add
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}
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; Function Attrs: nounwind ssp uwtable
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define i32 @main(i32 %argc, i8** %argv) {
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entry:
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%a = call i32 @foo(i32 2)
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ret i32 %a
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}
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