llvm-6502/test/CodeGen/X86/io.llx
John Criswell 5365b6d143 Test for memory mapped I/O intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12943 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-14 13:52:56 +00:00

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; RUN: llvm-as < %s | llc -march=x86
implementation
declare int %llvm.readio (int *)
declare void %llvm.writeio (int, int *)
int %in(int * %p1) {
%p2 = alloca int
%i1 = call int %llvm.readio (int* %p1)
%i2 = call int %llvm.readio (int* %p2)
%r = add int %i1, %i2
ret int %r
}
void %out(int* %p) {
call void(int, int*)* %llvm.writeio (int 1, int * %p)
ret void
}