| /// -fno-semantic-interposition is the default and local aliases (via dso_local) are allowed. |
| // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -mrelocation-model pic -pic-level 1 %s -o - | FileCheck %s --check-prefixes=CHECK,NOMETADATA |
| |
| /// -fsemantic-interposition sets a module metadata. |
| // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -mrelocation-model pic -pic-level 1 -fsemantic-interposition %s -o - | FileCheck %s --check-prefixes=PREEMPT,METADATA |
| |
| /// Traditional half-baked behavior: interprocedural optimizations are allowed |
| /// but local aliases are not used. |
| // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -mrelocation-model pic -pic-level 1 -fhalf-no-semantic-interposition %s -o - | FileCheck %s --check-prefixes=PREEMPT,NOMETADATA |
| |
| // CHECK: @var = global i32 0, align 4 |
| // CHECK: @ext_var = external global i32, align 4 |
| // CHECK: @ifunc = ifunc i32 (), bitcast (i8* ()* @ifunc_resolver to i32 ()* ()*) |
| // CHECK: define dso_local i32 @func() |
| // CHECK: declare i32 @ext() |
| |
| // PREEMPT: @var = global i32 0, align 4 |
| // PREEMPT: @ext_var = external global i32, align 4 |
| // PREEMPT: @ifunc = ifunc i32 (), bitcast (i8* ()* @ifunc_resolver to i32 ()* ()*) |
| // PREEMPT: define i32 @func() |
| // PREEMPT: declare i32 @ext() |
| |
| // METADATA: !{{[0-9]+}} = !{i32 1, !"SemanticInterposition", i32 1} |
| // NOMETADATA-NOT: "SemanticInterposition" |
| |
| int var; |
| extern int ext_var; |
| |
| int ifunc(void) __attribute__((ifunc("ifunc_resolver"))); |
| |
| int func(void) { return 0; } |
| int ext(void); |
| |
| static void *ifunc_resolver() { return func; } |
| |
| int foo() { |
| return var + ext_var + ifunc() + func() + ext(); |
| } |
