f770683f14
The extension has the following syntax: __builtin_call_with_static_chain(Call, Chain) where Call must be a function call expression and Chain must be of pointer type This extension performs a function call Call with a static chain pointer Chain passed to the callee in a designated register. This is useful for calling foreign language functions whose ABI uses static chain pointers (e.g. to implement closures). Differential Revision: http://reviews.llvm.org/D6332 llvm-svn: 224167
40 lines
1.8 KiB
C++
40 lines
1.8 KiB
C++
// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck -check-prefix=CHECK32 %s
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck -check-prefix=CHECK64 %s
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struct A {
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long x, y;
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};
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struct B {
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long x, y, z, w;
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};
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extern "C" {
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int f1(A, A, A, A);
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B f2(void);
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_Complex float f3(void);
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A &f4();
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}
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void test() {
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A a;
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// CHECK32: call i32 bitcast (i32 (%struct.A*, %struct.A*, %struct.A*, %struct.A*)* @f1 to i32 (i8*, %struct.A*, %struct.A*, %struct.A*, %struct.A*)*)(i8* nest bitcast (i32 (%struct.A*, %struct.A*, %struct.A*, %struct.A*)* @f1 to i8*)
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// CHECK64: call i32 bitcast (i32 (i64, i64, i64, i64, i64, i64, %struct.A*)* @f1 to i32 (i8*, i64, i64, i64, i64, i64, i64, %struct.A*)*)(i8* nest bitcast (i32 (i64, i64, i64, i64, i64, i64, %struct.A*)* @f1 to i8*)
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__builtin_call_with_static_chain(f1(a, a, a, a), f1);
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// CHECK32: call void bitcast (void (%struct.B*)* @f2 to void (%struct.B*, i8*)*)(%struct.B* sret %{{[0-9a-z]+}}, i8* nest bitcast (void (%struct.B*)* @f2 to i8*))
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// CHECK64: call void bitcast (void (%struct.B*)* @f2 to void (%struct.B*, i8*)*)(%struct.B* sret %{{[0-9a-z]+}}, i8* nest bitcast (void (%struct.B*)* @f2 to i8*))
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__builtin_call_with_static_chain(f2(), f2);
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// CHECK32: call i64 bitcast (i64 ()* @f3 to i64 (i8*)*)(i8* nest bitcast (i64 ()* @f3 to i8*))
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// CHECK64: call <2 x float> bitcast (<2 x float> ()* @f3 to <2 x float> (i8*)*)(i8* nest bitcast (<2 x float> ()* @f3 to i8*))
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__builtin_call_with_static_chain(f3(), f3);
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// CHECK32: call dereferenceable(8) %struct.A* bitcast (%struct.A* ()* @f4 to %struct.A* (i8*)*)(i8* nest bitcast (%struct.A* ()* @f4 to i8*))
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// CHECK64: call dereferenceable(16) %struct.A* bitcast (%struct.A* ()* @f4 to %struct.A* (i8*)*)(i8* nest bitcast (%struct.A* ()* @f4 to i8*))
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__builtin_call_with_static_chain(f4(), f4);
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}
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