850d53a197
LTO code may end up mixing bitcode files from various sources varying in their use of opaque pointer types. The current strategy to decide between opaque / typed pointers upon the first bitcode file loaded does not work here, since we could be loading a non-opaque bitcode file first and would then be unable to load any files with opaque pointer types later. So for LTO this: - Adds an `lto::Config::OpaquePointer` option and enforces an upfront decision between the two modes. - Adds `-opaque-pointers`/`-no-opaque-pointers` options to the gold plugin; disabled by default. - `--opaque-pointers`/`--no-opaque-pointers` options with `-plugin-opt=-opaque-pointers`/`-plugin-opt=-no-opaque-pointers` aliases to lld; disabled by default. - Adds an `-lto-opaque-pointers` option to the `llvm-lto2` tool. - Changes the clang driver to pass `-plugin-opt=-opaque-pointers` to the linker in LTO modes when clang was configured with opaque pointers enabled by default. This fixes https://github.com/llvm/llvm-project/issues/55377 Differential Revision: https://reviews.llvm.org/D125847
29 lines
973 B
LLVM
29 lines
973 B
LLVM
; RUN: opt -module-summary %s -o %t1.bc
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; RUN: opt -module-summary %p/Inputs/reference_non_importable.ll -o %t2.bc
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; RUN: llvm-lto2 run %t1.bc %t2.bc -o %t.o -save-temps \
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; RUN: -r=%t1.bc,_foo,pxl \
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; RUN: -r=%t1.bc,_b,pxl \
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; RUN: -r=%t2.bc,_main,pxl \
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; RUN: -r=%t2.bc,_foo,xl
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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; We shouldn't promote the private because it has a section
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; RUN: llvm-dis < %t.o.1.2.internalize.bc | FileCheck %s --check-prefix=PROMOTE
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; PROMOTE: @a = private global i8 0, section "__TEXT,__cstring,cstring_literals"
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@a = private global i8 0, section "__TEXT,__cstring,cstring_literals"
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@b = global i8 *@a
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; We want foo to be imported in the main module!
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; RUN: llvm-dis < %t.o.2.3.import.bc | FileCheck %s --check-prefix=IMPORT
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; IMPORT: define available_externally dso_local ptr @foo()
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define i8 **@foo() {
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ret i8 **@b
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}
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