a5aa0c46c3
The purpose of this flag is to allow the compiler to assume that each object file passed to the linker has been compiled using a unique source file name. This is useful for reducing link times when doing ThinLTO in combination with whole-program devirtualization or CFI, as it allows modules without exported symbols to be built with ThinLTO. Reviewers: vitalybuka, teresajohnson Reviewed By: teresajohnson Pull Request: https://github.com/llvm/llvm-project/pull/135728
23 lines
610 B
LLVM
23 lines
610 B
LLVM
; RUN: opt -thinlto-bc -thin-link-bitcode-file=%t2 -thinlto-split-lto-unit -o %t %s
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; RUN: llvm-modextract -b -n 1 -o %t1 %t
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; RUN: llvm-dis -o - %t1 | FileCheck %s
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source_filename = "unique-source-file-names.c"
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@llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @f, ptr null }]
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; CHECK: @g.45934e8a5251fb7adbecfff71a4e70ed =
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@g = internal global i8 42, !type !0
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declare void @sink(ptr)
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define internal void @f() {
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call void @sink(ptr @g)
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ret void
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}
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!0 = !{i32 0, !"typeid"}
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!llvm.module.flags = !{!1}
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!1 = !{i32 1, !"Unique Source File Names", i32 1}
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