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

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Add ms_abi and sysv_abi attribute handling. Based on a patch by Benno Rice! llvm-svn: 189644
2013-08-30 12:39:01 +08:00
// RUN: %clang_cc1 -triple x86_64-unknown-freebsd10.0 -emit-llvm < %s | FileCheck -check-prefix=FREEBSD %s
// RUN: %clang_cc1 -triple x86_64-pc-win32 -emit-llvm < %s | FileCheck -check-prefix=WIN64 %s
Support __builtin_ms_va_list. Summary: This change adds support for `__builtin_ms_va_list`, a GCC extension for variadic `ms_abi` functions. The existing `__builtin_va_list` support is inadequate for this because `va_list` is defined differently in the Win64 ABI vs. the System V/AMD64 ABI. Depends on D1622. Reviewers: rsmith, rnk, rjmccall CC: cfe-commits Differential Revision: http://reviews.llvm.org/D1623 llvm-svn: 247941
2015-09-18 04:55:33 +08:00
struct foo {
int x;
float y;
char z;
};
// FREEBSD: %[[STRUCT_FOO:.*]] = type { i32, float, i8 }
// WIN64: %[[STRUCT_FOO:.*]] = type { i32, float, i8 }
Add ms_abi and sysv_abi attribute handling. Based on a patch by Benno Rice! llvm-svn: 189644
2013-08-30 12:39:01 +08:00
void __attribute__((ms_abi)) f1(void);
void __attribute__((sysv_abi)) f2(void);
void f3(void) {
Support __builtin_ms_va_list. Summary: This change adds support for `__builtin_ms_va_list`, a GCC extension for variadic `ms_abi` functions. The existing `__builtin_va_list` support is inadequate for this because `va_list` is defined differently in the Win64 ABI vs. the System V/AMD64 ABI. Depends on D1622. Reviewers: rsmith, rnk, rjmccall CC: cfe-commits Differential Revision: http://reviews.llvm.org/D1623 llvm-svn: 247941
2015-09-18 04:55:33 +08:00
// FREEBSD-LABEL: define void @f3()
// WIN64-LABEL: define void @f3()
Add ms_abi and sysv_abi attribute handling. Based on a patch by Benno Rice! llvm-svn: 189644
2013-08-30 12:39:01 +08:00
f1();
Support __builtin_ms_va_list. Summary: This change adds support for `__builtin_ms_va_list`, a GCC extension for variadic `ms_abi` functions. The existing `__builtin_va_list` support is inadequate for this because `va_list` is defined differently in the Win64 ABI vs. the System V/AMD64 ABI. Depends on D1622. Reviewers: rsmith, rnk, rjmccall CC: cfe-commits Differential Revision: http://reviews.llvm.org/D1623 llvm-svn: 247941
2015-09-18 04:55:33 +08:00
// FREEBSD: call x86_64_win64cc void @f1()
// WIN64: call void @f1()
Add ms_abi and sysv_abi attribute handling. Based on a patch by Benno Rice! llvm-svn: 189644
2013-08-30 12:39:01 +08:00
f2();
Support __builtin_ms_va_list. Summary: This change adds support for `__builtin_ms_va_list`, a GCC extension for variadic `ms_abi` functions. The existing `__builtin_va_list` support is inadequate for this because `va_list` is defined differently in the Win64 ABI vs. the System V/AMD64 ABI. Depends on D1622. Reviewers: rsmith, rnk, rjmccall CC: cfe-commits Differential Revision: http://reviews.llvm.org/D1623 llvm-svn: 247941
2015-09-18 04:55:33 +08:00
// FREEBSD: call void @f2()
// WIN64: call x86_64_sysvcc void @f2()
Add ms_abi and sysv_abi attribute handling. Based on a patch by Benno Rice! llvm-svn: 189644
2013-08-30 12:39:01 +08:00
}
// FREEBSD: declare x86_64_win64cc void @f1()
// FREEBSD: declare void @f2()
// WIN64: declare void @f1()
// WIN64: declare x86_64_sysvcc void @f2()
Support __builtin_ms_va_list. Summary: This change adds support for `__builtin_ms_va_list`, a GCC extension for variadic `ms_abi` functions. The existing `__builtin_va_list` support is inadequate for this because `va_list` is defined differently in the Win64 ABI vs. the System V/AMD64 ABI. Depends on D1622. Reviewers: rsmith, rnk, rjmccall CC: cfe-commits Differential Revision: http://reviews.llvm.org/D1623 llvm-svn: 247941
2015-09-18 04:55:33 +08:00
// Win64 ABI varargs
void __attribute__((ms_abi)) f4(int a, ...) {
// FREEBSD-LABEL: define x86_64_win64cc void @f4
// WIN64-LABEL: define void @f4
__builtin_ms_va_list ap;
__builtin_ms_va_start(ap, a);
// FREEBSD: %[[AP:.*]] = alloca i8*
// FREEBSD: call void @llvm.va_start
// WIN64: %[[AP:.*]] = alloca i8*
// WIN64: call void @llvm.va_start
int b = __builtin_va_arg(ap, int);
// FREEBSD: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
// FREEBSD-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
// FREEBSD-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
// FREEBSD-NEXT: bitcast i8* %[[AP_CUR]] to i32*
// WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
// WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32*
double _Complex c = __builtin_va_arg(ap, double _Complex);
// FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
// FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16
// FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
// FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }*
// WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16
// WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }*
struct foo d = __builtin_va_arg(ap, struct foo);
// FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
// FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16
// FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
// FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
// WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16
// WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
__builtin_ms_va_list ap2;
__builtin_ms_va_copy(ap2, ap);
// FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]]
// FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]]
// WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]]
__builtin_ms_va_end(ap);
// FREEBSD: call void @llvm.va_end
// WIN64: call void @llvm.va_end
}
// Let's verify that normal va_lists work right on Win64, too.
void f5(int a, ...) {
// WIN64-LABEL: define void @f5
__builtin_va_list ap;
__builtin_va_start(ap, a);
// WIN64: %[[AP:.*]] = alloca i8*
// WIN64: call void @llvm.va_start
int b = __builtin_va_arg(ap, int);
// WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
// WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32*
double _Complex c = __builtin_va_arg(ap, double _Complex);
// WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16
// WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }*
struct foo d = __builtin_va_arg(ap, struct foo);
// WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16
// WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
__builtin_va_list ap2;
__builtin_va_copy(ap2, ap);
// WIN64: call void @llvm.va_copy
__builtin_va_end(ap);
// WIN64: call void @llvm.va_end
}
// Verify that using a Win64 va_list from a System V function works.
void __attribute__((sysv_abi)) f6(__builtin_ms_va_list ap) {
// FREEBSD-LABEL: define void @f6
// FREEBSD: store i8* %ap, i8** %[[AP:.*]]
// WIN64-LABEL: define x86_64_sysvcc void @f6
// WIN64: store i8* %ap, i8** %[[AP:.*]]
int b = __builtin_va_arg(ap, int);
// FREEBSD: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
// FREEBSD-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
// FREEBSD-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
// FREEBSD-NEXT: bitcast i8* %[[AP_CUR]] to i32*
// WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
// WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32*
double _Complex c = __builtin_va_arg(ap, double _Complex);
// FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
// FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16
// FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
// FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }*
// WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16
// WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }*
struct foo d = __builtin_va_arg(ap, struct foo);
// FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
// FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16
// FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
// FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
// WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16
// WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
__builtin_ms_va_list ap2;
__builtin_ms_va_copy(ap2, ap);
// FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]]
// FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]]
// WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]]
}