1;; Verify that the target of a wrap is kept by LTO's summary-based global dead 2;; stripping if the original symbol is referenced by a linker script or --defsym 3 4; REQUIRES: x86 5; RUN: rm -rf %t && split-file %s %t 6 7;; We need a module summary to trigger summary-based global stripping 8; RUN: opt -module-summary -o %t/foo.bc %t/foo.ll 9; RUN: echo 'alias = __real_foo;' > %t/alias.script 10; RUN: ld.lld -shared -o %t/libalias_foo.so %t/foo.bc %t/alias.script --wrap foo 11; RUN: llvm-readelf --syms %t/libalias_foo.so | FileCheck --check-prefix=FOO %s 12 13; FOO: Symbol table '.symtab' contains 14; FOO-DAG: [[#]]: [[#%.16x,FOO_VAL:]] 1 FUNC LOCAL HIDDEN [[#]] foo 15; FOO-DAG: [[#]]: [[#FOO_VAL]] 0 FUNC GLOBAL DEFAULT [[#]] alias 16 17; RUN: opt -module-summary -o %t/wrap_foo.bc %t/wrap_foo.ll 18; RUN: ld.lld -shared -o %t/libalias_wrap_foo.so %t/wrap_foo.bc --wrap foo --defsym=alias=foo 19; RUN: llvm-readelf --syms %t/libalias_wrap_foo.so | FileCheck --check-prefix=WRAP-FOO %s 20 21; WRAP-FOO: Symbol table '.symtab' contains 22; WRAP-FOO-DAG: [[#]]: [[#%.16x,WRAP_FOO_VAL:]] 1 FUNC LOCAL HIDDEN [[#]] __wrap_foo 23; WRAP-FOO-DAG: [[#]]: [[#WRAP_FOO_VAL]] 0 FUNC GLOBAL DEFAULT [[#]] alias 24 25;--- foo.ll 26target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 27target triple = "x86_64-unknown-linux-gnu" 28define hidden void @foo() { 29 ret void 30} 31 32;; We need a live root to trigger summary-based global stripping 33define dso_local void @bar() { 34 ret void 35} 36 37;--- wrap_foo.ll 38target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 39target triple = "x86_64-unknown-linux-gnu" 40define hidden void @__wrap_foo() { 41 ret void 42} 43 44define dso_local void @bar() { 45 ret void 46} 47