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
28 lines
939 B
LLVM
28 lines
939 B
LLVM
; RUN: llvm-as %s -o %t1.o
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; RUN: llvm-as %p/Inputs/alias-alias-1.ll -o %t2.o
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; RUN: llvm-lto2 run -o %t3.o %t1.o %t2.o -r %t2.o,a, -r %t2.o,d,px -r %t1.o,a,p -r %t1.o,c,p -r %t1.o,b -save-temps
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; RUN: llvm-dis < %t3.o.0.0.preopt.bc -o - | FileCheck %s
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; RUN: FileCheck --check-prefix=RES %s < %t3.o.resolution.txt
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; CHECK-NOT: alias
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; CHECK: @c = global i32 1
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; CHECK-NEXT: @d = global ptr @a
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; CHECK-EMPTY:
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; CHECK-NEXT: @a = weak alias i32, ptr @b
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; CHECK-NEXT: @b = internal alias i32, ptr @c
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; RES: 1.o{{$}}
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; RES-NEXT: {{^}}-r={{.*}}1.o,c,p{{$}}
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; RES-NEXT: {{^}}-r={{.*}}1.o,a,p{{$}}
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; RES-NEXT: {{^}}-r={{.*}}1.o,b,{{$}}
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; RES-NEXT: 2.o{{$}}
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; RES-NEXT: {{^}}-r={{.*}}2.o,a,{{$}}
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; RES-NEXT: {{^}}-r={{.*}}2.o,d,px{{$}}
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target datalayout = "e-m:e-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-unknown-linux-gnu"
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@a = weak alias i32, i32* @b
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@b = alias i32, i32* @c
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@c = global i32 1
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