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llvm-project/clang/test/CodeGen/mrtd.c

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Implement -mrtd which sets the StdCall calling convention to be the default one. llvm-svn: 126756
2011-03-02 01:40:53 +08:00
// RUN: %clang_cc1 -mrtd -triple i386-unknown-freebsd9.0 -emit-llvm -o - %s | FileCheck %s
void baz(int arg);
// CHECK: define x86_stdcallcc void @foo(i32 %arg) nounwind
void foo(int arg) {
ANSI C requires that a call to an unprototyped function type succeed if the definition has a non-variadic prototype with compatible parameters. Therefore, the default rule for such calls must be to use a non-variadic convention. Achieve this by casting the callee to the function type with which it is required to be compatible, unless the target specifically opts out and insists that unprototyped calls should use the variadic rules. The only case of that I'm aware of is the x86-64 convention, which passes arguments the same way in both cases but also sets a small amount of extra information; here we seek to maintain compatibility with GCC, which does set this when calling an unprototyped function. Addresses PR10810 and PR10713. llvm-svn: 140241
2011-09-21 16:08:30 +08:00
// CHECK: call x86_stdcallcc i32 bitcast (i32 (...)* @bar to i32 (i32)*)(
Implement -mrtd which sets the StdCall calling convention to be the default one. llvm-svn: 126756
2011-03-02 01:40:53 +08:00
bar(arg);
Kill off more names to fix this test llvm-svn: 126775
2011-03-02 03:55:40 +08:00
// CHECK: call x86_stdcallcc void @baz(i32
Implement -mrtd which sets the StdCall calling convention to be the default one. llvm-svn: 126756
2011-03-02 01:40:53 +08:00
baz(arg);
}
// CHECK: declare x86_stdcallcc i32 @bar(...)
// CHECK: declare x86_stdcallcc void @baz(i32)