// VASTART needs to be custom lowered to use the VarArgsFrameIndex
setOperationAction(ISD::VASTART , MVT::Other, Custom);
setOperationAction(ISD::VAEND , MVT::Other, Expand);
- if (Subtarget->is64Bit() && !Subtarget->isTargetWin64()) {
- // TargetInfo::X86_64ABIBuiltinVaList
+ if (Subtarget->is64Bit()) {
setOperationAction(ISD::VAARG , MVT::Other, Custom);
setOperationAction(ISD::VACOPY , MVT::Other, Custom);
} else {
- // TargetInfo::CharPtrBuiltinVaList
setOperationAction(ISD::VAARG , MVT::Other, Expand);
setOperationAction(ISD::VACOPY , MVT::Other, Expand);
}
}
declare void @llvm.va_start(i8*) nounwind
-declare void @llvm.va_copy(i8*, i8*) nounwind
; CHECK: f5:
; CHECK: pushq
call void @llvm.va_start(i8* %ap1)
ret i8* %ap1
}
-
-; WinX86_64 uses char* for va_list. Verify that the correct amount of bytes
-; are copied using va_copy.
-; CHECK: copy4:
-; CHECK: subq $16
-; CHECK: leaq 56(%rsp), [[REGISTER:%[a-z]+]]
-; CHECK: movq [[REGISTER]], 8(%rsp)
-; CHECK: movq [[REGISTER]], (%rsp)
-; CHECK: addq $16
-; CHECK: ret
-define void @copy4(i64 %a0, i64 %a1, i64 %a2, i64 %a3, ...) nounwind {
-entry:
- %ap = alloca i8*, align 8
- %cp = alloca i8*, align 8
- %ap1 = bitcast i8** %ap to i8*
- %cp1 = bitcast i8** %cp to i8*
- call void @llvm.va_start(i8* %ap1)
- call void @llvm.va_copy(i8* %cp1, i8* %ap1)
- ret void
-}
-
-; CHECK: copy1:
-; CHECK: subq $16
-; CHECK: leaq 32(%rsp), [[REGISTER:%[a-z]+]]
-; CHECK: movq [[REGISTER]], 8(%rsp)
-; CHECK: movq [[REGISTER]], (%rsp)
-; CHECK: addq $16
-; CHECK: ret
-define void @copy1(i64 %a0, ...) nounwind {
-entry:
- %ap = alloca i8*, align 8
- %cp = alloca i8*, align 8
- %ap1 = bitcast i8** %ap to i8*
- %cp1 = bitcast i8** %cp to i8*
- call void @llvm.va_start(i8* %ap1)
- call void @llvm.va_copy(i8* %cp1, i8* %ap1)
- ret void
-}
-
-; CHECK: arg4:
-; CHECK: pushq
-; va_start:
-; CHECK: leaq 48(%rsp), [[REG1:%[a-z]+]]
-; CHECK: movq [[REG1]], (%rsp)
-; va_arg:
-; CHECK: leaq 52(%rsp), [[REG2:%[a-z]+]]
-; CHECK: movq [[REG2]], (%rsp)
-; CHECK: movl 48(%rsp), %eax
-; CHECK: popq
-; CHECK: ret
-define i32 @arg4(i64 %a0, i64 %a1, i64 %a2, i64 %a3, ...) nounwind {
-entry:
- %ap = alloca i8*, align 8
- %ap1 = bitcast i8** %ap to i8*
- call void @llvm.va_start(i8* %ap1)
- %tmp = va_arg i8** %ap, i32
- ret i32 %tmp
-}