9dc1da6e87
Add support for `[[msvc::forceinline]]` and `[[msvc::forceinline_calls]]`. `[[msvc::forceinline]]` is equivalent to Microsoft's `__forceinline` when placed before a function declaration. Unlike `__forceinline`, `[[msvc::forceinline]]` works with lambdas. `[[msvc::forceinline_calls]]` is simliar to `[[clang::always_inline]]` but only works on statements. Both are implemented as aliases of `[[clang::always_inline]]` with special checks. Fixes #186539.
34 lines
1.6 KiB
C++
34 lines
1.6 KiB
C++
// RUN: %clang_cc1 -std=c++23 -disable-llvm-passes -emit-llvm %s -triple x86_64-pc-windows-msvc -fms-extensions -o - | FileCheck -check-prefix=CHECK-MSVC %s
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// RUN: %clang_cc1 -std=c++23 -disable-llvm-passes -emit-llvm %s -triple x86_64-unknown-linux-gnu -fms-extensions -o - | FileCheck -check-prefix=CHECK-LINUX %s
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// CHECK-MSVC: define {{.*}} @"?foo@@YAXXZ"() #[[ATTR_FOO:[0-9]+]]
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// CHECK-LINUX: define {{.*}} @_Z3foov() #[[ATTR_FOO:[0-9]+]]
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// Add another attribute to prevent overlapping sets.
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[[msvc::forceinline, gnu::hot]] void foo() {}
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void bar();
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void call_lambda() {
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auto lambda = [] [[msvc::forceinline]] () { bar(); };
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lambda();
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}
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// CHECK-MSVC: define internal void @"??R<lambda_0>@?0??call_lambda@@YAXXZ@QEBA?A?<auto>@@XZ"{{.*}} #[[ATTR_LAMBDA:[0-9]+]]
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// CHECK-LINUX: define internal void @"_ZZ11call_lambdavENK3$_0clEv"{{.*}} #[[ATTR_LAMBDA:[0-9]+]]
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void call_bar() {
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// CHECK-MSVC-LABEL: define {{.*}} @"?call_bar@@YAXXZ"()
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// CHECK-MSVC: call void @"?bar@@YAXXZ"() #[[ATTR_CALLSITE:[0-9]+]]
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// CHECK-LINUX-LABEL: define {{.*}} @_Z8call_barv()
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// CHECK-LINUX: call void @_Z3barv() #[[ATTR_CALLSITE:[0-9]+]]
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[[msvc::forceinline_calls]] bar();
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}
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// CHECK-MSVC-DAG: attributes #[[ATTR_FOO]] = { alwaysinline hot {{.*}}}
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// CHECK-MSVC-DAG: attributes #[[ATTR_LAMBDA]] = { alwaysinline {{.*}}}
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// CHECK-MSVC-DAG: attributes #[[ATTR_CALLSITE]] = { alwaysinline }
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// CHECK-LINUX-DAG: attributes #[[ATTR_FOO]] = { alwaysinline hot {{.*}}}
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// CHECK-LINUX-DAG: attributes #[[ATTR_LAMBDA]] = { alwaysinline {{.*}}}
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// CHECK-LINUX-DAG: attributes #[[ATTR_CALLSITE]] = { alwaysinline }
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