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9ca1b94a6d
Multi-versioned functions defined by cpu_dispatch and implemented with IFunc can not be called outside the translation units where they are defined due to lack of symbols. This patch add function aliases for these functions and thus make them visible outside. Differential Revision: https://reviews.llvm.org/D67058 Patch by Senran Zhang llvm-svn: 371586
89 lines
3.6 KiB
C++
89 lines
3.6 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple x86_64-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefix=LINUX
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-windows-pc -emit-llvm %s -o - | FileCheck %s --check-prefix=WINDOWS
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// Test ensures that this properly differentiates between types in different
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// namespaces.
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int __attribute__((target("sse4.2"))) foo(int) { return 0; }
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int __attribute__((target("arch=sandybridge"))) foo(int);
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int __attribute__((target("arch=ivybridge"))) foo(int) {return 1;}
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int __attribute__((target("default"))) foo(int) { return 2; }
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namespace ns {
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int __attribute__((target("sse4.2"))) foo(int) { return 0; }
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int __attribute__((target("arch=sandybridge"))) foo(int);
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int __attribute__((target("arch=ivybridge"))) foo(int) {return 1;}
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int __attribute__((target("default"))) foo(int) { return 2; }
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}
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int bar() {
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return foo(1) + ns::foo(2);
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}
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// LINUX: @_Z3fooi.ifunc = weak_odr ifunc i32 (i32), i32 (i32)* ()* @_Z3fooi.resolver
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// LINUX: @_ZN2ns3fooEi.ifunc = weak_odr ifunc i32 (i32), i32 (i32)* ()* @_ZN2ns3fooEi.resolver
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// LINUX: define i32 @_Z3fooi.sse4.2(i32 %0)
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// LINUX: ret i32 0
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// LINUX: define i32 @_Z3fooi.arch_ivybridge(i32 %0)
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// LINUX: ret i32 1
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// LINUX: define i32 @_Z3fooi(i32 %0)
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// LINUX: ret i32 2
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// WINDOWS: define dso_local i32 @"?foo@@YAHH@Z.sse4.2"(i32 %0)
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// WINDOWS: ret i32 0
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// WINDOWS: define dso_local i32 @"?foo@@YAHH@Z.arch_ivybridge"(i32 %0)
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// WINDOWS: ret i32 1
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// WINDOWS: define dso_local i32 @"?foo@@YAHH@Z"(i32 %0)
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// WINDOWS: ret i32 2
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// LINUX: define i32 @_ZN2ns3fooEi.sse4.2(i32 %0)
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// LINUX: ret i32 0
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// LINUX: define i32 @_ZN2ns3fooEi.arch_ivybridge(i32 %0)
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// LINUX: ret i32 1
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// LINUX: define i32 @_ZN2ns3fooEi(i32 %0)
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// LINUX: ret i32 2
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// WINDOWS: define dso_local i32 @"?foo@ns@@YAHH@Z.sse4.2"(i32 %0)
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// WINDOWS: ret i32 0
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// WINDOWS: define dso_local i32 @"?foo@ns@@YAHH@Z.arch_ivybridge"(i32 %0)
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// WINDOWS: ret i32 1
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// WINDOWS: define dso_local i32 @"?foo@ns@@YAHH@Z"(i32 %0)
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// WINDOWS: ret i32 2
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// LINUX: define i32 @_Z3barv()
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// LINUX: call i32 @_Z3fooi.ifunc(i32 1)
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// LINUX: call i32 @_ZN2ns3fooEi.ifunc(i32 2)
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// WINDOWS: define dso_local i32 @"?bar@@YAHXZ"()
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// WINDOWS: call i32 @"?foo@@YAHH@Z.resolver"(i32 1)
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// WINDOWS: call i32 @"?foo@ns@@YAHH@Z.resolver"(i32 2)
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// LINUX: define weak_odr i32 (i32)* @_Z3fooi.resolver() comdat
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// LINUX: ret i32 (i32)* @_Z3fooi.arch_sandybridge
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// LINUX: ret i32 (i32)* @_Z3fooi.arch_ivybridge
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// LINUX: ret i32 (i32)* @_Z3fooi.sse4.2
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// LINUX: ret i32 (i32)* @_Z3fooi
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// WINDOWS: define weak_odr dso_local i32 @"?foo@@YAHH@Z.resolver"(i32 %0) comdat
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// WINDOWS: call i32 @"?foo@@YAHH@Z.arch_sandybridge"(i32 %0)
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// WINDOWS: call i32 @"?foo@@YAHH@Z.arch_ivybridge"(i32 %0)
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// WINDOWS: call i32 @"?foo@@YAHH@Z.sse4.2"(i32 %0)
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// WINDOWS: call i32 @"?foo@@YAHH@Z"(i32 %0)
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// LINUX: define weak_odr i32 (i32)* @_ZN2ns3fooEi.resolver() comdat
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// LINUX: ret i32 (i32)* @_ZN2ns3fooEi.arch_sandybridge
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// LINUX: ret i32 (i32)* @_ZN2ns3fooEi.arch_ivybridge
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// LINUX: ret i32 (i32)* @_ZN2ns3fooEi.sse4.2
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// LINUX: ret i32 (i32)* @_ZN2ns3fooEi
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// WINDOWS: define weak_odr dso_local i32 @"?foo@ns@@YAHH@Z.resolver"(i32 %0) comdat
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// WINDOWS: call i32 @"?foo@ns@@YAHH@Z.arch_sandybridge"(i32 %0)
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// WINDOWS: call i32 @"?foo@ns@@YAHH@Z.arch_ivybridge"(i32 %0)
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// WINDOWS: call i32 @"?foo@ns@@YAHH@Z.sse4.2"(i32 %0)
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// WINDOWS: call i32 @"?foo@ns@@YAHH@Z"(i32 %0)
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// LINUX: declare i32 @_Z3fooi.arch_sandybridge(i32)
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// LINUX: declare i32 @_ZN2ns3fooEi.arch_sandybridge(i32)
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// WINDOWS: declare dso_local i32 @"?foo@@YAHH@Z.arch_sandybridge"(i32)
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// WINDOWS: declare dso_local i32 @"?foo@ns@@YAHH@Z.arch_sandybridge"(i32)
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